* Sync with thesis: do not include store location in the hash

computation (in the intensional model).

.gitignore

@@ -1,262 +0,0 @@
-# START "git svn show-ignore"
-
-# /
-/Makefile
-/Makefile.in
-/aclocal.m4
-/autom4te.cache
-/config.*
-/configure
-/nix.spec
-/stamp-h1
-/svn-revision
-/NEWS
-/libtool
-
-# /config/
-/config/config.guess
-/config/config.sub
-/config/depcomp
-/config/install-sh
-/config/missing
-/config/mkinstalldirs
-/config/ltmain.sh
-
-# /corepkgs/
-/corepkgs/Makefile
-/corepkgs/Makefile.in
-
-# /corepkgs/buildenv/
-/corepkgs/buildenv/Makefile.in
-/corepkgs/buildenv/Makefile
-/corepkgs/buildenv/builder.pl
-
-# /corepkgs/channels/
-/corepkgs/channels/Makefile.in
-/corepkgs/channels/Makefile
-/corepkgs/channels/unpack.sh
-
-# /corepkgs/nar/
-/corepkgs/nar/Makefile
-/corepkgs/nar/Makefile.in
-/corepkgs/nar/nar.sh
-/corepkgs/nar/unnar.sh
-
-# /doc/
-/doc/Makefile
-/doc/Makefile.in
-
-# /doc/manual/
-/doc/manual/Makefile
-/doc/manual/Makefile.in
-/doc/manual/manual.html
-/doc/manual/manual.is-valid
-/doc/manual/*.1
-/doc/manual/*.8
-/doc/manual/images
-/doc/manual/version.txt
-/doc/manual/NEWS.html
-/doc/manual/NEWS.txt
-
-# /externals/
-/externals/Makefile
-/externals/Makefile.in
-/externals/aterm-*
-/externals/have-aterm
-/externals/build-aterm
-/externals/inst-aterm
-/externals/bzip2-*
-/externals/have-bzip2
-/externals/build-bzip2
-/externals/inst-bzip2
-
-# /make/examples/aterm/
-/make/examples/aterm/result*
-
-# /make/examples/aterm/aterm/
-/make/examples/aterm/aterm/*
-
-# /make/examples/aterm/test/
-/make/examples/aterm/test/*
-
-# /misc/
-/misc/Makefile.in
-/misc/Makefile
-
-# /misc/emacs/
-/misc/emacs/Makefile.in
-/misc/emacs/Makefile
-
-# /scripts/
-/scripts/Makefile
-/scripts/Makefile.in
-/scripts/nix-profile.sh
-/scripts/nix-pull
-/scripts/nix-push
-/scripts/nix-switch
-/scripts/nix-collect-garbage
-/scripts/nix-prefetch-url
-/scripts/nix-install-package
-/scripts/nix-channel
-/scripts/nix-build
-/scripts/nix-copy-closure
-/scripts/readmanifest.pm
-/scripts/readconfig.pm
-/scripts/download-using-manifests.pl
-/scripts/copy-from-other-stores.pl
-/scripts/generate-patches.pl
-/scripts/find-runtime-roots.pl
-/scripts/build-remote.pl
-
-# /src/
-/src/Makefile
-/src/Makefile.in
-
-# /src/bin2c/
-/src/bin2c/Makefile.in
-/src/bin2c/Makefile
-/src/bin2c/bin2c
-/src/bin2c/.deps
-/src/bin2c/.libs
-
-# /src/boost/
-/src/boost/Makefile
-/src/boost/Makefile.in
-
-# /src/boost/format/
-/src/boost/format/Makefile
-/src/boost/format/Makefile.in
-/src/boost/format/.deps
-/src/boost/format/libformat.a
-/src/boost/format/.libs
-
-# /src/bsdiff-4.3/
-/src/bsdiff-4.3/Makefile
-/src/bsdiff-4.3/Makefile.in
-/src/bsdiff-4.3/bsdiff
-/src/bsdiff-4.3/bspatch
-/src/bsdiff-4.3/.deps
-/src/bsdiff-4.3/.libs
-
-# /src/libexpr/
-/src/libexpr/Makefile
-/src/libexpr/Makefile.in
-/src/libexpr/.deps
-/src/libexpr/libexpr.a
-/src/libexpr/lexer-tab.cc
-/src/libexpr/lexer-tab.hh
-/src/libexpr/parser-tab.cc
-/src/libexpr/parser-tab.hh
-/src/libexpr/parser-tab.output
-/src/libexpr/nixexpr-ast.hh
-/src/libexpr/nixexpr-ast.cc
-/src/libexpr/.libs
-/src/libexpr/nix.tbl
-
-# /src/libmain/
-/src/libmain/Makefile
-/src/libmain/Makefile.in
-/src/libmain/.deps
-/src/libmain/libmain.a
-/src/libmain/.libs
-
-# /src/libstore/
-/src/libstore/Makefile
-/src/libstore/Makefile.in
-/src/libstore/.deps
-/src/libstore/libstore.a
-/src/libstore/derivations-ast.cc
-/src/libstore/derivations-ast.hh
-/src/libstore/.libs
-
-# /src/libutil/
-/src/libutil/Makefile
-/src/libutil/Makefile.in
-/src/libutil/.deps
-/src/libutil/libutil.a
-/src/libutil/.libs
-
-# /src/nix-env/
-/src/nix-env/Makefile.in
-/src/nix-env/Makefile
-/src/nix-env/.deps
-/src/nix-env/nix-env
-/src/nix-env/help.txt.hh
-/src/nix-env/.libs
-
-# /src/nix-hash/
-/src/nix-hash/Makefile
-/src/nix-hash/Makefile.in
-/src/nix-hash/.deps
-/src/nix-hash/.libs
-/src/nix-hash/nix-hash
-/src/nix-hash/help.txt.hh
-
-# /src/nix-instantiate/
-/src/nix-instantiate/Makefile.in
-/src/nix-instantiate/Makefile
-/src/nix-instantiate/.deps
-/src/nix-instantiate/nix-instantiate
-/src/nix-instantiate/help.txt.hh
-/src/nix-instantiate/.libs
-
-# /src/nix-log2xml/
-/src/nix-log2xml/Makefile.in
-/src/nix-log2xml/Makefile
-/src/nix-log2xml/.deps
-/src/nix-log2xml/nix-log2xml
-/src/nix-log2xml/test*.*
-/src/nix-log2xml/.libs
-/src/nix-log2xml/*.log
-/src/nix-log2xml/*.xml
-/src/nix-log2xml/*.html
-
-# /src/nix-setuid-helper/
-/src/nix-setuid-helper/Makefile.in
-/src/nix-setuid-helper/Makefile
-/src/nix-setuid-helper/.deps
-/src/nix-setuid-helper/nix-setuid-helper
-/src/nix-setuid-helper/help.txt.hh
-/src/nix-setuid-helper/.libs
-
-# /src/nix-store/
-/src/nix-store/Makefile
-/src/nix-store/Makefile.in
-/src/nix-store/.deps
-/src/nix-store/help.txt.hh
-/src/nix-store/nix-store
-/src/nix-store/.libs
-
-# /src/nix-worker/
-/src/nix-worker/Makefile.in
-/src/nix-worker/Makefile
-/src/nix-worker/.deps
-/src/nix-worker/nix-worker
-/src/nix-worker/help.txt.hh
-/src/nix-worker/.libs
-
-# /tests/
-/tests/Makefile
-/tests/Makefile.in
-/tests/test-tmp
-/tests/config.nix
-/tests/common.sh
-/tests/dummy
-
-# /tests/lang/
-/tests/lang/*.out
-/tests/lang/*.out.xml
-/tests/lang/*.ast
-
-# END "git svn show-ignore"
-
-*.lo
-*.la
-*.o
-*~
-
-# GNU Global
-GPATH
-GRTAGS
-GSYMS
-GTAGS

COPYING

@@ -1,397 +1,221 @@
-		  GNU LESSER GENERAL PUBLIC LICENSE
-		       Version 2.1, February 1999
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
 
- Copyright (C) 1991, 1999 Free Software Foundation, Inc.
- 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
-[This is the first released version of the Lesser GPL.  It also counts
- as the successor of the GNU Library Public License, version 2, hence
- the version number 2.1.]
-
 			    Preamble
 
   The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
-Licenses are intended to guarantee your freedom to share and change
-free software--to make sure the software is free for all its users.
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
 
-  This license, the Lesser General Public License, applies to some
-specially designated software packages--typically libraries--of the
-Free Software Foundation and other authors who decide to use it.  You
-can use it too, but we suggest you first think carefully about whether
-this license or the ordinary General Public License is the better
-strategy to use in any particular case, based on the explanations below.
-
-  When we speak of free software, we are referring to freedom of use,
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+  When we speak of free software, we are referring to freedom, not
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-  Most GNU software, including some libraries, is covered by the
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+modification follow.
 
-		  GNU LESSER GENERAL PUBLIC LICENSE
+		    GNU GENERAL PUBLIC LICENSE
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
-  0. This License Agreement applies to any software library or other
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+    part thereof, to be licensed as a whole at no charge to all third
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+
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-
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-distribute the object code for the work under the terms of Section 6.
-Any executables containing that work also fall under Section 6,
-whether or not they are linked directly with the Library itself.
 
-  6. As an exception to the Sections above, you may also combine or
-link a "work that uses the Library" with the Library to produce a
-work containing portions of the Library, and distribute that work
-under terms of your choice, provided that the terms permit
-modification of the work for the customer's own use and reverse
-engineering for debugging such modifications.
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
 
-  You must give prominent notice with each copy of the work that the
-Library is used in it and that the Library and its use are covered by
-this License.  You must supply a copy of this License.  If the work
-during execution displays copyright notices, you must include the
-copyright notice for the Library among them, as well as a reference
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-of these things:
-
-    a) Accompany the work with the complete corresponding
-    machine-readable source code for the Library including whatever
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-    with the Library, with the complete machine-readable "work that
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-
-    b) Use a suitable shared library mechanism for linking with the
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-    copy of the library already present on the user's computer system,
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-    the user installs one, as long as the modified version is
-    interface-compatible with the version that the work was made with.
-
-    c) Accompany the work with a written offer, valid for at
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-    specified in Subsection 6a, above, for a charge no more
-    than the cost of performing this distribution.
-
-    d) If distribution of the work is made by offering access to copy
-    from a designated place, offer equivalent access to copy the above
-    specified materials from the same place.
-
-    e) Verify that the user has already received a copy of these
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-
-  For an executable, the required form of the "work that uses the
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-
-  It may happen that this requirement contradicts the license
-restrictions of other proprietary libraries that do not normally
-accompany the operating system.  Such a contradiction means you cannot
-use both them and the Library together in an executable that you
-distribute.
-
-  7. You may place library facilities that are a work based on the
-Library side-by-side in a single library together with other library
-facilities not covered by this License, and distribute such a combined
-library, provided that the separate distribution of the work based on
-the Library and of the other library facilities is otherwise
-permitted, and provided that you do these two things:
-
-    a) Accompany the combined library with a copy of the same work
-    based on the Library, uncombined with any other library
-    facilities.  This must be distributed under the terms of the
-    Sections above.
-
-    b) Give prominent notice with the combined library of the fact
-    that part of it is a work based on the Library, and explaining
-    where to find the accompanying uncombined form of the same work.
-
-  8. You may not copy, modify, sublicense, link with, or distribute
-the Library except as expressly provided under this License.  Any
-attempt otherwise to copy, modify, sublicense, link with, or
-distribute the Library is void, and will automatically terminate your
-rights under this License.  However, parties who have received copies,
-or rights, from you under this License will not have their licenses
-terminated so long as such parties remain in full compliance.
-
-  9. You are not required to accept this License, since you have not
+  5. You are not required to accept this License, since you have not
 signed it.  However, nothing else grants you permission to modify or
-distribute the Library or its derivative works.  These actions are
+distribute the Program or its derivative works.  These actions are
 prohibited by law if you do not accept this License.  Therefore, by
-modifying or distributing the Library (or any work based on the
-Library), you indicate your acceptance of this License to do so, and
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
 all its terms and conditions for copying, distributing or modifying
-the Library or works based on it.
+the Program or works based on it.
 
-  10. Each time you redistribute the Library (or any work based on the
-Library), the recipient automatically receives a license from the
-original licensor to copy, distribute, link with or modify the Library
-subject to these terms and conditions.  You may not impose any further
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
 restrictions on the recipients' exercise of the rights granted herein.
-You are not responsible for enforcing compliance by third parties with
+You are not responsible for enforcing compliance by third parties to
 this License.
-
-  11. If, as a consequence of a court judgment or allegation of patent
+
+  7. If, as a consequence of a court judgment or allegation of patent
 infringement or for any other reason (not limited to patent issues),
 conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
 excuse you from the conditions of this License.  If you cannot
 distribute so as to satisfy simultaneously your obligations under this
 License and any other pertinent obligations, then as a consequence you
-may not distribute the Library at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Library by
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
 all those who receive copies directly or indirectly through you, then
 the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Library.
+refrain entirely from distribution of the Program.
 
-If any portion of this section is held invalid or unenforceable under any
-particular circumstance, the balance of the section is intended to apply,
-and the section as a whole is intended to apply in other circumstances.
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
 
 It is not the purpose of this section to induce you to infringe any
 patents or other property right claims or to contest validity of any
 such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system which is
+integrity of the free software distribution system, which is
 implemented by public license practices.  Many people have made
 generous contributions to the wide range of software distributed
 through that system in reliance on consistent application of that
@@ -401,104 +225,116 @@ impose that choice.
 
 This section is intended to make thoroughly clear what is believed to
 be a consequence of the rest of this License.
-
-  12. If the distribution and/or use of the Library is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Library under this License may add
-an explicit geographical distribution limitation excluding those countries,
-so that distribution is permitted only in or among countries not thus
-excluded.  In such case, this License incorporates the limitation as if
-written in the body of this License.
-
-  13. The Free Software Foundation may publish revised and/or new
-versions of the Lesser General Public License from time to time.
-Such new versions will be similar in spirit to the present version,
-but may differ in detail to address new problems or concerns.
-
-Each version is given a distinguishing version number.  If the Library
-specifies a version number of this License which applies to it and
-"any later version", you have the option of following the terms and
-conditions either of that version or of any later version published by
-the Free Software Foundation.  If the Library does not specify a
-license version number, you may choose any version ever published by
-the Free Software Foundation.
 
-  14. If you wish to incorporate parts of the Library into other free
-programs whose distribution conditions are incompatible with these,
-write to the author to ask for permission.  For software which is
-copyrighted by the Free Software Foundation, write to the Free
-Software Foundation; we sometimes make exceptions for this.  Our
-decision will be guided by the two goals of preserving the free status
-of all derivatives of our free software and of promoting the sharing
-and reuse of software generally.
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
 
 			    NO WARRANTY
 
-  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
-WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
-EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
-OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
-KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
-LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
-THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
 
-  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
-WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
-AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
-FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
-CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
-LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
-RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
-FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
-SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
-DAMAGES.
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
 
 		     END OF TERMS AND CONDITIONS
 
-           How to Apply These Terms to Your New Libraries
+	    How to Apply These Terms to Your New Programs
 
-  If you develop a new library, and you want it to be of the greatest
-possible use to the public, we recommend making it free software that
-everyone can redistribute and change.  You can do so by permitting
-redistribution under these terms (or, alternatively, under the terms of the
-ordinary General Public License).
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
 
-  To apply these terms, attach the following notices to the library.  It is
-safest to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least the
-"copyright" line and a pointer to where the full notice is found.
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
 
-    <one line to give the library's name and a brief idea of what it does.>
+    <one line to give the program's name and a brief idea of what it does.>
     Copyright (C) <year>  <name of author>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) any later version.
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
 
-    This library is distributed in the hope that it will be useful,
+    This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library; if not, write to the Free Software
-    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
 Also add information on how to contact you by electronic and paper mail.
 
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year  name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
 You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the library, if
+school, if any, to sign a "copyright disclaimer" for the program, if
 necessary.  Here is a sample; alter the names:
 
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the
-  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
 
-  <signature of Ty Coon>, 1 April 1990
+  <signature of Ty Coon>, 1 April 1989
   Ty Coon, President of Vice
 
-That's all there is to it!
-
-
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.

Makefile.am

@@ -1,28 +1,29 @@
 SUBDIRS = externals src scripts corepkgs doc misc tests
 EXTRA_DIST = substitute.mk nix.spec nix.spec.in bootstrap.sh \
-  nix.conf.example NEWS version
-
-pkginclude_HEADERS = config.h
+  svn-revision nix.conf.example
 
 include ./substitute.mk
 
 nix.spec: nix.spec.in
 
+rpm: nix.spec dist
+	rpm $(EXTRA_RPM_FLAGS) -ta $(distdir).tar.gz
+
+relname:
+	echo -n $(distdir) > relname
+
 install-data-local: init-state
 	$(INSTALL) -d $(DESTDIR)$(sysconfdir)/nix
-	$(INSTALL_DATA) $(srcdir)/nix.conf.example $(DESTDIR)$(sysconfdir)/nix
+	$(INSTALL_DATA) nix.conf.example $(DESTDIR)$(sysconfdir)/nix
 	if ! test -e $(DESTDIR)$(sysconfdir)/nix/nix.conf; then \
-		$(INSTALL_DATA) $(srcdir)/nix.conf.example $(DESTDIR)$(sysconfdir)/nix/nix.conf; \
+		$(INSTALL_DATA) nix.conf.example $(DESTDIR)$(sysconfdir)/nix/nix.conf; \
 	fi
-	$(INSTALL) -d $(DESTDIR)$(docdir)
-	$(INSTALL_DATA) README $(DESTDIR)$(docdir)/
 
 if INIT_STATE
-
-# For setuid operation, you can enable the following:
-# INIT_FLAGS = -g @NIX_GROUP@ -o @NIX_USER@
-# GROUP_WRITABLE = -m 775
-
+if SETUID_HACK
+INIT_FLAGS = -g @NIX_GROUP@ -o @NIX_USER@
+GROUP_WRITABLE = -m 775
+endif
 init-state:
 	$(INSTALL) $(INIT_FLAGS) -d $(DESTDIR)$(localstatedir)/nix
 	$(INSTALL) $(INIT_FLAGS) -d $(DESTDIR)$(localstatedir)/nix/db
@@ -31,18 +32,16 @@ init-state:
 	$(INSTALL) $(INIT_FLAGS) -d $(DESTDIR)$(localstatedir)/nix/profiles
 	$(INSTALL) $(INIT_FLAGS) -d $(DESTDIR)$(localstatedir)/nix/gcroots
 	$(INSTALL) $(INIT_FLAGS) -d $(DESTDIR)$(localstatedir)/nix/temproots
-	ln -sfn $(localstatedir)/nix/profiles $(DESTDIR)$(localstatedir)/nix/gcroots/profiles
-	$(INSTALL) $(INIT_FLAGS) -d $(DESTDIR)$(localstatedir)/nix/userpool
-	-$(INSTALL) $(INIT_FLAGS) -m 1777 -d $(DESTDIR)$(storedir)
+	$(INSTALL) $(INIT_FLAGS) $(GROUP_WRITABLE) -d $(DESTDIR)$(localstatedir)/nix/gcroots/tmp
+	$(INSTALL) $(INIT_FLAGS) $(GROUP_WRITABLE) -d $(DESTDIR)$(localstatedir)/nix/gcroots/channels
+	rm -f $(DESTDIR)$(localstatedir)/nix/gcroots/profiles
+	ln -s $(localstatedir)/nix/profiles $(DESTDIR)$(localstatedir)/nix/gcroots/profiles
+	$(INSTALL) $(INIT_FLAGS) -d $(DESTDIR)$(prefix)/store
 	$(INSTALL) $(INIT_FLAGS) $(GROUP_WRITABLE) -d $(DESTDIR)$(localstatedir)/nix/manifests
-	ln -sfn $(localstatedir)/nix/manifests $(DESTDIR)$(localstatedir)/nix/gcroots/manifests
-
+#	$(bindir)/nix-store --init
 else
-
 init-state:
-
 endif
 
-NEWS:
-	$(MAKE) -C doc/manual NEWS.txt
-	cp $(srcdir)/doc/manual/NEWS.txt NEWS
+svn-revision:
+	svnversion . > svn-revision

NEWS

@@ -0,0 +1,261 @@
+Version 0.9
+
+* Unpacking of patch sequences is much faster now by not doing
+  redundant unpacking and repacking of intermediate paths.
+
+
+Version 0.8 (April 11, 2005)
+
+NOTE: the hashing scheme in Nix 0.8 changed (as detailed below).  As a
+result, `nix-pull' manifests and channels built for Nix 0.7 and below
+will now work anymore.  However, the Nix expression language has not
+changed, so you can still build from source.  Also, existing user
+environments continue to work.  Nix 0.8 will automatically upgrade the
+database schema of previous installations when it is first run.
+
+If you get the error message
+
+  you have an old-style manifest `/nix/var/nix/manifests/[...]';
+  please delete it
+
+you should delete previously downloaded manifests:
+
+  $ rm /nix/var/nix/manifests/*
+
+If `nix-channel' gives the error message
+
+  manifest `http://catamaran.labs.cs.uu.nl/dist/nix/channels/[channel]/MANIFEST'
+  is too old (i.e., for Nix <= 0.7)
+
+then you should unsubscribe from the offending channel (`nix-channel
+--remove URL'; leave out `/MANIFEST'), and subscribe to the same URL,
+with `channels' replaced by `channels-v3' (e.g.,
+http://catamaran.labs.cs.uu.nl/dist/nix/channels-v3/nixpkgs-unstable).
+
+Nix 0.8 has the following improvements:
+
+* The cryptographic hashes used in store paths are now 160 bits long,
+  but encoded in base-32 so that they are still only 32 characters
+  long (e.g., /nix/store/csw87wag8bqlqk7ipllbwypb14xainap-atk-1.9.0).
+  (This is actually a 160 bit truncation of a SHA-256 hash.)
+
+* Big cleanups and simplifications of the basic store semantics.  The
+  notion of "closure store expressions" is gone (and so is the notion
+  of "successors"); the file system references of a store path are now
+  just stored in the database.
+
+  For instance, given any store path, you can query its closure:
+
+    $ nix-store -qR $(which firefox)
+    ... lots of paths ...
+
+  Also, Nix now remembers for each store path the derivation that
+  built it (the "deriver"):
+
+    $ nix-store -qR $(which firefox)
+    /nix/store/4b0jx7vq80l9aqcnkszxhymsf1ffa5jd-firefox-1.0.1.drv
+
+  So to see the build-time dependencies, you can do
+  
+    $ nix-store -qR $(nix-store -qd $(which firefox))
+
+  or, in a nicer format:
+
+    $ nix-store -q --tree $(nix-store -qd $(which firefox))
+
+  File system references are also stored in reverse.  For instance,
+  you can query all paths that directly or indirectly use a certain
+  Glibc:
+
+    $ nix-store -q --referers-closure \
+        /nix/store/8lz9yc6zgmc0vlqmn2ipcpkjlmbi51vv-glibc-2.3.4
+
+* The concept of fixed-output derivations has been formalised.
+  Previously, functions such as `fetchurl' in Nixpkgs used a hack
+  (namely, explicitly specifying a store path hash) to prevent changes
+  to, say, the URL of the file from propagating upwards through the
+  dependency graph, causing rebuilds of everything.  This can now be
+  done cleanly by specifying the `outputHash' and `outputHashAlgo'
+  attributes.  Nix itself checks that the content of the output has
+  the specified hash.  (This is important for maintaining certain
+  invariants necessary for future work on secure shared stores.)
+
+* One-click installation :-)  It is now possible to install any
+  top-level component in Nixpkgs directly, through the web - see,
+  e.g., http://catamaran.labs.cs.uu.nl/dist/nixpkgs-0.8/.  All you
+  have to do is associate `/nix/bin/nix-install-package' with the MIME
+  type `application/nix-package' (or the extension `.nixpkg'), and
+  clicking on a package link will cause it to be installed, with all
+  appropriate dependencies.  If you just want to install some specific
+  application, this is easier than subscribing to a channel.
+
+* `nix-store -r PATHS' now builds all the derivations PATHS in
+  parallel.  Previously it did them sequentially (though exploiting
+  possible parallelism between subderivations).  This is nice for
+  build farms.
+
+* `nix-channel' has new operations `--list' and `--remove'.
+
+* New ways of installing components into user environments:
+
+  - Copy from another user environment:
+
+      $ nix-env -i --from-profile .../other-profile firefox
+
+  - Install a store derivation directly (bypassing the Nix expression
+    language entirely):
+
+      $ nix-env -i /nix/store/z58v41v21xd3...-aterm-2.3.1.drv
+
+    (This is used to implement `nix-install-package', which is
+    therefore immune to evolution in the Nix expression language.)
+
+  - Install an already built store path directly:
+
+      $ nix-env -i /nix/store/hsyj5pbn0d9i...-aterm-2.3.1
+
+  - Install the result of a Nix expression specified as a command-line
+    argument:
+
+      $ nix-env -f .../i686-linux.nix -i -E 'x: x.firefoxWrapper'
+
+    The difference with the normal installation mode is that `-E' does
+    not use the `name' attributes of derivations.  Therefore, this can
+    be used to disambiguate multiple derivations with the same name.
+
+* A hash of the contents of a store path is now stored in the database
+  after a succesful build.  This allows you to check whether store
+  paths have been tampered with: `nix-store --verify --check-contents'.
+    
+* Implemented a concurrent garbage collector.  It is now always safe
+  to run the garbage collector, even if other Nix operations are
+  happening simultaneously.
+
+  However, there can still be GC races if you use `nix-instantiate'
+  and `nix-store -r' directly to build things.  To prevent races, use
+  the `--add-root' flag of those commands.
+
+* The garbage collector now finally deletes paths in the right order
+  (i.e., topologically sorted under the `references' relation), thus
+  making it safe to interrupt the collector without risking a store
+  that violates the closure invariant.
+
+* Likewise, the substitute mechanism now downloads files in the right
+  order, thus preserving the closure invariant at all times.
+
+* The result of `nix-build' is now registered as a root of the garbage
+  collector.  If the `./result' link is deleted, the GC root
+  disappears automatically.
+
+* The behaviour of the garbage collector can be changed globally by
+  setting options in `/nix/etc/nix/nix.conf'.
+
+  - `gc-keep-derivations' specifies whether deriver links should be
+    followed when searching for live paths.
+
+  - `gc-keep-outputs' specifies whether outputs of derivations should
+    be followed when searching for live paths.
+  
+  - `env-keep-derivations' specifies whether user environments should
+    store the paths of derivations when they are added (thus keeping
+    the derivations alive).
+
+* New `nix-env' query flags `--drv-path' and `--out-path'.
+
+* `fetchurl' allows SHA-1 and SHA-256 in addition to MD5.  Just
+  specify the attribute `sha1' or `sha256' instead of `md5'.
+
+* Manual updates.
+
+  
+Version 0.7 (January 12, 2005)
+
+* Binary patching.  When upgrading components using pre-built binaries
+  (through nix-pull / nix-channel), Nix can automatically download and
+  apply binary patches to already installed components instead of full
+  downloads.  Patching is "smart": if there is a *sequence* of patches
+  to an installed component, Nix will use it.  Patches are currently
+  generated automatically between Nixpkgs (pre-)releases.
+
+* Simplifications to the substitute mechanism.
+
+* Nix-pull now stores downloaded manifests in /nix/var/nix/manifests.
+
+* Metadata on files in the Nix store is canonicalised after builds:
+  the last-modified timestamp is set to 0 (00:00:00 1/1/1970), the
+  mode is set to 0444 or 0555 (readable and possibly executable by
+  all; setuid/setgid bits are dropped), and the group is set to the
+  default.  This ensures that the result of a build and an
+  installation through a substitute is the same; and that timestamp
+  dependencies are revealed.
+
+
+Version 0.6 (November 14, 2004)
+
+Major changes include the following:
+
+* Rewrite of the normalisation engine.
+
+  * Multiple builds can now be performed in parallel (option `-j').
+
+  * Distributed builds.  Nix can now call a shell script to forward
+    builds to Nix installations on remote machines, which may or may
+    not be of the same platform type.
+
+  * Option `--fallback' allows recovery from broken substitutes.
+
+  * Option `--keep-going' causes building of other (unaffected)
+    derivations to continue if one failed.
+    
+* Improvements to the garbage collector (i.e., it should actually work
+  now).
+
+* Setuid Nix installations allow a Nix store to be shared among
+  multiple users.
+
+* Substitute registration is much faster now.
+
+* A utility `nix-build' to build a Nix expression and create a symlink
+  to the result int the current directory; useful for testing Nix
+  derivations.
+
+* Manual updates.
+
+* `nix-env' changes:
+
+  * Derivations for other platforms are filtered out (which can be
+    overriden using `--system-filter').
+
+  * `--install' by default now uninstall previous derivations with the
+    same name.
+
+  * `--upgrade' allows upgrading to a specific version.
+
+  * New operation `--delete-generations' to remove profile
+    generations (necessary for effective garbage collection).
+
+  * Nicer output (sorted, columnised).
+
+* More sensible verbosity levels all around (builder output is now
+  shown always, unless `-Q' is given).
+
+* Nix expression language changes:
+
+  * New language construct: `with E1; E2' brings all attributes
+    defined in the attribute set E1 in scope in E2.
+
+  * Added a `map' function.
+
+  * Various new operators (e.g., string concatenation).
+
+* Expression evaluation is much faster.
+
+* An Emacs mode for editing Nix expressions (with syntax highlighting
+  and indentation) has been added.
+
+* Many bug fixes.
+
+
+Version 0.5 and earlier
+
+Please refer to the Subversion commit log messages.

README

@@ -1,10 +1,9 @@
-Nix is a purely functional package manager.  For installation and
-usage instructions, please read the manual, which can be found in
-`docs/manual/manual.html', and additionally at the Nix website at
-<http://nixos.org/>.
+For installation and usage instructions, please read the manual, which
+can be found in `docs/manual/manual.html', and additionally at the Nix
+website at <http://www.cs.uu.nl/groups/ST/Trace/Nix>.
 
 
 Acknowledgments
 
 This product includes software developed by the OpenSSL Project for
-use in the OpenSSL Toolkit (http://www.OpenSSL.org/).
+use in the OpenSSL Toolkit (http://www.OpenSSL.org/)

aterm-gc.supp

@@ -1,117 +0,0 @@
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Cond
-   fun:*
-   fun:AT_collect_minor
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Cond
-   fun:*
-   fun:*
-   fun:AT_collect_minor
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Value4
-   fun:*
-   fun:AT_collect_minor
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Value8
-   fun:*
-   fun:AT_collect_minor
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Value4
-   fun:*
-   fun:*
-   fun:AT_collect_minor
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Value8
-   fun:*
-   fun:*
-   fun:AT_collect_minor
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Addr4
-   fun:*
-   fun:AT_collect_minor
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Addr8
-   fun:*
-   fun:AT_collect_minor
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Cond
-   fun:*
-   fun:AT_collect
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Value4
-   fun:*
-   fun:AT_collect
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Value8
-   fun:*
-   fun:AT_collect
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Addr4
-   fun:*
-   fun:AT_collect
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Addr8
-   fun:*
-   fun:AT_collect
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Value4
-   fun:*
-   fun:*
-   fun:AT_collect
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Value8
-   fun:*
-   fun:*
-   fun:AT_collect
-}
-
-{
-   ATerm library conservatively scans for GC roots
-   Memcheck:Cond
-   fun:*
-   fun:*
-   fun:AT_collect
-}

bootstrap.sh

@@ -1,6 +1,4 @@
 #! /bin/sh -e
-mkdir -p config
-libtoolize --copy
 aclocal
 autoheader
 automake --add-missing --copy

configure.ac

@@ -1,28 +1,34 @@
-AC_INIT(nix, m4_esyscmd([echo -n $(cat ./version)$VERSION_SUFFIX]))
+AC_INIT(nix, "0.9")
 AC_CONFIG_SRCDIR(README)
 AC_CONFIG_AUX_DIR(config)
-AM_INIT_AUTOMAKE([dist-bzip2 foreign])
+AM_INIT_AUTOMAKE([dist-bzip2])
 
-AC_DEFINE_UNQUOTED(NIX_VERSION, ["$VERSION"], [Nix version.])
+# Change to `1' to produce a `stable' release (i.e., the `preREVISION'
+# suffix is not added).
+STABLE=0
+
+# Put the revision number in the version.
+if test "$STABLE" != "1"; then
+    if REVISION=`test -d $srcdir/.svn && svnversion $srcdir 2> /dev/null`; then
+        VERSION="${VERSION}pre${REVISION}"
+    elif REVISION=`cat $srcdir/svn-revision 2> /dev/null`; then
+        VERSION="${VERSION}pre${REVISION}"
+    fi
+fi
+
+AC_PREFIX_DEFAULT(/nix)
 
 AC_CANONICAL_HOST
 
-
 # Construct a Nix system name (like "i686-linux").
 AC_MSG_CHECKING([for the canonical Nix system name])
-cpu_name=$(uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ ' 'abcdefghijklmnopqrstuvwxyz_')
-machine_name=$(uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ ' 'abcdefghijklmnopqrstuvwxyz_')
+cpu_name=$(uname -p | tr 'A-Z ' 'a-z_')
+machine_name=$(uname -m | tr 'A-Z ' 'a-z_')
 
 case $machine_name in
     i*86)
         machine_name=i686
         ;;
-    x86_64)
-        machine_name=x86_64
-        ;;
-    ppc)
-        machine_name=powerpc
-        ;;
     *)
         if test "$cpu_name" != "unknown"; then
             machine_name=$cpu_name
@@ -30,81 +36,17 @@ case $machine_name in
         ;;
 esac
 
-sys_name=$(uname -s | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ ' 'abcdefghijklmnopqrstuvwxyz_')
-
-case $sys_name in
-    cygwin*)
-        sys_name=cygwin
-        ;;
-esac
-
+sys_name=$(uname -s | tr 'A-Z ' 'a-z_')
 AC_ARG_WITH(system, AC_HELP_STRING([--with-system=SYSTEM],
-  [Platform identifier (e.g., `i686-linux').]),
+  [platform identifier (e.g., `i686-linux')]),
   system=$withval, system="${machine_name}-${sys_name}")
 AC_MSG_RESULT($system)
 AC_SUBST(system)
 AC_DEFINE_UNQUOTED(SYSTEM, ["$system"], [platform identifier (`cpu-os')])
 
-
-# State should be stored in /nix/var, unless the user overrides it explicitly.
-test "$localstatedir" = '${prefix}/var' && localstatedir=/nix/var
-
-
-# Whether to produce a statically linked binary.  On Cygwin, this is
-# the default: dynamically linking against the ATerm DLL does work,
-# except that it requires the ATerm "lib" directory to be in $PATH, as
-# Windows doesn't have anything like an RPATH embedded in executable.
-# Since this is kind of annoying, we use static libraries for now.
-
-AC_ARG_ENABLE(static-nix, AC_HELP_STRING([--enable-static-nix],
-  [produce statically linked binaries]),
-  static_nix=$enableval, static_nix=no)
-
-if test "$sys_name" = cygwin; then
-   static_nix=yes
-fi
-
-if test "$static_nix" = yes; then
-    AC_DISABLE_SHARED
-    AC_ENABLE_STATIC
-fi
-
-
-# Windows-specific stuff.
-if test "$sys_name" = "cygwin"; then
-    # We cannot delete open files.
-    AC_DEFINE(CANNOT_DELETE_OPEN_FILES, 1, [Whether it is impossible to delete open files.])
-fi
-
-# Solaris-specific stuff.
-if test "$sys_name" = "sunos"; then
-    # Solaris requires -lsocket -lnsl for network functions
-    ADDITIONAL_NETWORK_LIBS="-lsocket -lnsl"
-    AC_SUBST(ADDITIONAL_NETWORK_LIBS)
-fi
-
 AC_PROG_CC
 AC_PROG_CXX
-
-# To build programs to be run in the build machine
-if test "$CC_FOR_BUILD" = ""; then
-    if test "$cross_compiling" = "yes"; then
-        AC_CHECK_PROGS(CC_FOR_BUILD, gcc cc)
-    else
-        CC_FOR_BUILD="$CC"
-    fi
-fi
-AC_SUBST([CC_FOR_BUILD])
-
-# We are going to use libtool.
-AC_DISABLE_STATIC
-AC_ENABLE_SHARED
-AC_PROG_LIBTOOL
-
-
-# Use 64-bit file system calls so that we can support files > 2 GiB.
-AC_SYS_LARGEFILE
-
+AC_PROG_RANLIB
 
 # Check for pubsetbuf.
 AC_MSG_CHECKING([for pubsetbuf])
@@ -113,45 +55,15 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <iostream>
 using namespace std;
 static char buf[1024];]],
     [[cerr.rdbuf()->pubsetbuf(buf, sizeof(buf));]])],
-    [AC_MSG_RESULT(yes) AC_DEFINE(HAVE_PUBSETBUF, 1, [Whether pubsetbuf is available.])],
+    [AC_MSG_RESULT(yes) AC_DEFINE(HAVE_PUBSETBUF, 1, [whether pubsetbuf is available])],
     AC_MSG_RESULT(no))
 AC_LANG_POP(C++)
 
-
-# Check for chroot support (requires chroot() and bind mounts).
-AC_CHECK_FUNCS([chroot])
-AC_CHECK_FUNCS([unshare])
-AC_CHECK_HEADERS([sched.h], [], [], [])
-AC_CHECK_HEADERS([sys/param.h], [], [], [])
-AC_CHECK_HEADERS([sys/mount.h], [], [],
-[#ifdef HAVE_SYS_PARAM_H
-# include <sys/param.h>
-# endif
-])
-
-
-# Check for <locale>.
+# Check for <locale>
 AC_LANG_PUSH(C++)
-AC_CHECK_HEADERS([locale], [], [], [])
+AC_CHECK_HEADERS([locale])
 AC_LANG_POP(C++)
 
-
-# Check for <err.h>.
-AC_CHECK_HEADER([err.h], [], [bsddiff_compat_include="-Icompat-include"])
-AC_SUBST([bsddiff_compat_include])
-
-
-# Check whether we have the personality() syscall, which allows us to
-# do i686-linux builds on x86_64-linux machines.
-AC_CHECK_HEADERS([sys/personality.h])
-
-
-# Check for tr1/unordered_set.
-AC_LANG_PUSH(C++)
-AC_CHECK_HEADERS([tr1/unordered_set], [], [], [])
-AC_LANG_POP(C++)
-
-
 AC_DEFUN([NEED_PROG],
 [
 AC_PATH_PROG($1, $2)
@@ -161,43 +73,26 @@ fi
 ])
 
 NEED_PROG(curl, curl)
-NEED_PROG(bash, bash)
-NEED_PROG(patch, patch)
+NEED_PROG(bzip2, bzip2)
+NEED_PROG(bunzip2, bunzip2)
+NEED_PROG(shell, sh)
 AC_PATH_PROG(xmllint, xmllint, false)
 AC_PATH_PROG(xsltproc, xsltproc, false)
-AC_PATH_PROG(w3m, w3m, false)
 AC_PATH_PROG(flex, flex, false)
 AC_PATH_PROG(bison, bison, false)
 NEED_PROG(perl, perl)
-NEED_PROG(sed, sed)
 NEED_PROG(tar, tar)
-AC_PATH_PROG(dot, dot)
-AC_PATH_PROG(dblatex, dblatex)
-AC_PATH_PROG(gzip, gzip)
-
-AC_PATH_PROG(openssl_prog, openssl, openssl) # if not found, call openssl in $PATH
-AC_SUBST(openssl_prog)
-AC_DEFINE_UNQUOTED(OPENSSL_PATH, ["$openssl_prog"], [Path of the OpenSSL binary])
-
-# Test that Perl has the open/fork feature (Perl 5.8.0 and beyond).
-AC_MSG_CHECKING([whether Perl is recent enough])
-if ! $perl -e 'open(FOO, "-|", "true"); while (<FOO>) { print; }; close FOO or die;'; then
-    AC_MSG_RESULT(no)
-    AC_MSG_ERROR([Your Perl version is too old.  Nix requires Perl 5.8.0 or newer.])
-fi
-AC_MSG_RESULT(yes)
-
+                
 NEED_PROG(cat, cat)
-NEED_PROG(tr, tr)
 AC_ARG_WITH(coreutils-bin, AC_HELP_STRING([--with-coreutils-bin=PATH],
   [path of cat, mkdir, etc.]),
   coreutils=$withval, coreutils=$(dirname $cat))
 AC_SUBST(coreutils)
 
-AC_ARG_WITH(docbook-rng, AC_HELP_STRING([--with-docbook-rng=PATH],
-  [path of the DocBook RelaxNG schema]),
-  docbookrng=$withval, docbookrng=/docbook-rng-missing)
-AC_SUBST(docbookrng)
+AC_ARG_WITH(docbook-catalog, AC_HELP_STRING([--with-docbook-catalog=PATH],
+  [path of the DocBook XML DTD]),
+  docbookcatalog=$withval, docbookcatalog=/docbook-dtd-missing)
+AC_SUBST(docbookcatalog)
 
 AC_ARG_WITH(docbook-xsl, AC_HELP_STRING([--with-docbook-xsl=PATH],
   [path of the DocBook XSL stylesheets]),
@@ -211,57 +106,41 @@ AC_SUBST(xmlflags)
 
 AC_ARG_WITH(store-dir, AC_HELP_STRING([--with-store-dir=PATH],
   [path of the Nix store]),
-  storedir=$withval, storedir='/nix/store')
+  storedir=$withval, storedir='${prefix}/store')
 AC_SUBST(storedir)
 
-AC_ARG_WITH(openssl, AC_HELP_STRING([--with-openssl=PATH],
-  [prefix of the OpenSSL library]),
-  openssl=$withval, openssl=)
-AM_CONDITIONAL(HAVE_OPENSSL, test -n "$openssl")
-if test -n "$openssl"; then
-  LDFLAGS="-L$openssl/lib -lcrypto $LDFLAGS"
-  CFLAGS="-I$openssl/include $CFLAGS"
-  CXXFLAGS="-I$openssl/include $CXXFLAGS"
-  AC_DEFINE(HAVE_OPENSSL, 1, [Whether to use OpenSSL.])
-fi
-
-AC_ARG_WITH(bzip2, AC_HELP_STRING([--with-bzip2=PATH],
-  [prefix of bzip2]),
-  bzip2=$withval, bzip2=)
-AM_CONDITIONAL(HAVE_BZIP2, test -n "$bzip2")
-if test -z "$bzip2"; then
-  # Headers and libraries will be used from the temporary installation
-  # in externals/inst-bzip2.
-  bzip2_lib='-L${top_builddir}/externals/inst-bzip2/lib -lbz2'
-  bzip2_include='-I${top_builddir}/externals/inst-bzip2/include'
-  # The binary will be copied to $libexecdir.
-  bzip2_bin='${libexecdir}/nix'
-  # But for testing, we have to use the temporary copy :-(
-  bzip2_bin_test='${top_builddir}/externals/inst-bzip2/bin'
+AC_ARG_WITH(bdb, AC_HELP_STRING([--with-bdb=PATH],
+  [prefix of Berkeley DB]),
+  bdb=$withval, bdb=)
+AM_CONDITIONAL(HAVE_BDB, test -n "$bdb")
+if test -z "$bdb"; then
+  bdb_lib='-L${top_builddir}/externals/inst-bdb/lib -ldb_cxx'
+  bdb_include='-I${top_builddir}/externals/inst-bdb/include'
 else
-  bzip2_lib="-L$bzip2/lib -lbz2"
-  bzip2_include="-I$bzip2/include"
-  bzip2_bin="$bzip2/bin"
-  bzip2_bin_test="$bzip2/bin"
+  bdb_lib="-L$bdb/lib -ldb_cxx"
+  bdb_include="-I$bdb/include"
 fi
-AC_SUBST(bzip2_lib)
-AC_SUBST(bzip2_include)
-AC_SUBST(bzip2_bin)
-AC_SUBST(bzip2_bin_test)
+AC_SUBST(bdb_lib)
+AC_SUBST(bdb_include)
 
-
-# Whether to use the Boehm garbage collector.
-AC_ARG_ENABLE(gc, AC_HELP_STRING([--enable-gc],
-  [enable garbage collection in the Nix expression evaluator (requires Boehm GC)]),
-  gc=$enableval, gc=)
-if test -n "$gc"; then
-  PKG_CHECK_MODULES([BDW_GC], [bdw-gc])
-  boehmgc_lib="-L$boehmgc/lib -lgc"
-  CXXFLAGS="$BDW_GC_CFLAGS $CXXFLAGS"
-  AC_DEFINE(HAVE_BOEHMGC, 1, [Whether to use the Boehm garbage collector.])
+AC_ARG_WITH(aterm, AC_HELP_STRING([--with-aterm=PATH],
+  [prefix of CWI ATerm library]),
+  aterm=$withval, aterm=)
+AM_CONDITIONAL(HAVE_ATERM, test -n "$aterm")
+if test -z "$aterm"; then
+  aterm_lib='-L${top_builddir}/externals/inst-aterm/lib -lATerm'
+  aterm_include='-I${top_builddir}/externals/inst-aterm/include'
+  aterm_bin='${top_builddir}/externals/inst-aterm/bin'
+else
+  aterm_lib="-L$aterm/lib -lATerm"
+  aterm_include="-I$aterm/include"
+  aterm_bin="$aterm/bin"
 fi
-AC_SUBST(boehmgc_lib)
+AC_SUBST(aterm_lib)
+AC_SUBST(aterm_include)
+AC_SUBST(aterm_bin)
 
+AC_CHECK_LIB(pthread, pthread_mutex_init)
 
 AC_ARG_ENABLE(init-state, AC_HELP_STRING([--disable-init-state],
   [do not initialise DB etc. in `make install']),
@@ -269,30 +148,33 @@ AC_ARG_ENABLE(init-state, AC_HELP_STRING([--disable-init-state],
 AM_CONDITIONAL(INIT_STATE, test "$init_state" = "yes")
 
 
-# Setuid installations.
-AC_CHECK_FUNCS([setresuid setreuid lchown])
-
-
-# Nice to have, but not essential.
-AC_CHECK_FUNCS([strsignal])
-AC_CHECK_FUNCS([posix_fallocate])
-
-
-# This is needed if ATerm or bzip2 are static libraries,
-# and the Nix libraries are dynamic.
-if test "$(uname)" = "Darwin"; then
-    LDFLAGS="-all_load $LDFLAGS"
+AC_ARG_ENABLE(setuid, AC_HELP_STRING([--enable-setuid],
+  [install Nix setuid]),
+  setuid_hack=$enableval, setuid_hack=no)
+AM_CONDITIONAL(SETUID_HACK, test "$setuid_hack" = "yes")
+if test "$setuid_hack" = "yes"; then
+    AC_DEFINE(SETUID_HACK, 1, [whether to install Nix setuid])
 fi
 
-
-if test "$static_nix" = yes; then
-    # `-all-static' has to be added at the end of configure, because
-    # the C compiler doesn't know about -all-static (it's filtered out
-    # by libtool, but configure doesn't use libtool).
-    LDFLAGS="-all-static $LDFLAGS"
+AC_CHECK_FUNC(setresuid, [HAVE_SETRESUID=1], [HAVE_SETRESUID=])
+AM_CONDITIONAL(HAVE_SETRESUID, test "$HAVE_SETRESUID" = "1")
+if test "$HAVE_SETRESUID" = "1"; then
+    AC_DEFINE(HAVE_SETRESUID, 1, [whether we have setresuid()])
 fi
 
+AC_ARG_WITH(nix-user, AC_HELP_STRING([--with-nix-user=USER],
+  [user for Nix setuid binaries]),
+  NIX_USER=$withval, NIX_USER=nix)
+AC_SUBST(NIX_USER)
+AC_DEFINE_UNQUOTED(NIX_USER, ["$NIX_USER"], [Nix user])
+                                                      
+AC_ARG_WITH(nix-group, AC_HELP_STRING([--with-nix-group=USER],
+  [group for Nix setuid binaries]),
+  NIX_GROUP=$withval, NIX_GROUP=nix)
+AC_SUBST(NIX_GROUP)
+AC_DEFINE_UNQUOTED(NIX_GROUP, ["$NIX_GROUP"], [Nix group])
 
+                                                                                                            
 AM_CONFIG_HEADER([config.h])
 AC_CONFIG_FILES([Makefile
    externals/Makefile
@@ -308,10 +190,8 @@ AC_CONFIG_FILES([Makefile
    src/libexpr/Makefile
    src/nix-instantiate/Makefile
    src/nix-env/Makefile
-   src/nix-worker/Makefile
-   src/nix-setuid-helper/Makefile
-   src/nix-log2xml/Makefile
-   src/bsdiff-4.3/Makefile
+   src/log2xml/Makefile
+   src/bsdiff-4.2/Makefile
    scripts/Makefile
    corepkgs/Makefile
    corepkgs/nar/Makefile

corepkgs/buildenv/Makefile.am

@@ -3,7 +3,7 @@ all-local: builder.pl
 install-exec-local:
 	$(INSTALL) -d $(DESTDIR)$(datadir)/nix/corepkgs
 	$(INSTALL) -d $(DESTDIR)$(datadir)/nix/corepkgs/buildenv
-	$(INSTALL_DATA) $(srcdir)/default.nix $(DESTDIR)$(datadir)/nix/corepkgs/buildenv
+	$(INSTALL_DATA) default.nix $(DESTDIR)$(datadir)/nix/corepkgs/buildenv
 	$(INSTALL_PROGRAM) builder.pl $(DESTDIR)$(datadir)/nix/corepkgs/buildenv
 
 include ../../substitute.mk

corepkgs/buildenv/builder.pl.in

@@ -10,17 +10,11 @@ my $out = $ENV{"out"};
 mkdir "$out", 0755 || die "error creating $out";
 
 
-my $symlinks = 0;
-
-my %priorities;
-
-
 # For each activated package, create symlinks.
 
 sub createLinks {
     my $srcDir = shift;
     my $dstDir = shift;
-    my $priority = shift;
 
     my @srcFiles = glob("$srcDir/*");
 
@@ -28,20 +22,10 @@ sub createLinks {
         my $baseName = $srcFile;
         $baseName =~ s/^.*\///g; # strip directory
         my $dstFile = "$dstDir/$baseName";
-
-        # The files below are special-cased so that they don't show up
-        # in user profiles, either because they are useless, or
-        # because they would cause pointless collisions (e.g., each
-        # Python package brings its own
-        # `$out/lib/pythonX.Y/site-packages/easy-install.pth'.)
-        # Urgh, hacky...
-        if ($srcFile =~ /\/propagated-build-inputs$/ ||
+        
+	if ($srcFile =~ /\/propagated-build-inputs$/ ||
             $srcFile =~ /\/nix-support$/ ||
             $srcFile =~ /\/perllocal.pod$/ ||
-            $srcFile =~ /\/easy-install.pth$/ ||
-            $srcFile =~ /\/site.py$/ ||
-            $srcFile =~ /\/site.pyc$/ ||
-            $srcFile =~ /\/info\/dir$/ ||
             $srcFile =~ /\/log$/)
         {
             # Do nothing.
@@ -52,7 +36,7 @@ sub createLinks {
             lstat $dstFile;
             
             if (-d _) {
-                createLinks($srcFile, $dstFile, $priority);
+                createLinks($srcFile, $dstFile);
             }
 
             elsif (-l _) {
@@ -63,109 +47,62 @@ sub createLinks {
                 unlink $dstFile or die "error unlinking `$dstFile': $!";
                 mkdir $dstFile, 0755 || 
                     die "error creating directory `$dstFile': $!";
-                createLinks($target, $dstFile, $priorities{$dstFile});
-                createLinks($srcFile, $dstFile, $priority);
+                createLinks($target, $dstFile);
+                createLinks($srcFile, $dstFile);
             }
 
             else {
                 symlink($srcFile, $dstFile) ||
                     die "error creating link `$dstFile': $!";
-                $priorities{$dstFile} = $priority;
-                $symlinks++;
             }
         }
 
-        else {
+        elsif (-l $dstFile) {
+            my $target = readlink $dstFile;
+            die "collission between `$srcFile' and `$target'";
+        }
 
-            if (-l $dstFile) {
-                my $target = readlink $dstFile;
-                my $prevPriority = $priorities{$dstFile};
-                die ( "Collission between `$srcFile' and `$target'. "
-                    . "Suggested solution: use `nix-env --set-flag "
-                    . "priority NUMBER PKGNAME' to change the priority of "
-                    . "one of the conflicting packages.\n" )
-                    if $prevPriority == $priority;
-                next if $prevPriority < $priority;
-                unlink $dstFile or die;
-            }
-            
+        else {
+#            print "linking $dstFile to $srcFile\n";
             symlink($srcFile, $dstFile) ||
                 die "error creating link `$dstFile': $!";
-            $priorities{$dstFile} = $priority;
-            $symlinks++;
         }
     }
 }
 
 
 my %done;
-my %postponed;
 
 sub addPkg;
 sub addPkg {
     my $pkgDir = shift;
-    my $priority = shift;
 
     return if (defined $done{$pkgDir});
     $done{$pkgDir} = 1;
 
-#    print "symlinking $pkgDir\n";
-    createLinks("$pkgDir", "$out", $priority);
+    print "adding $pkgDir\n";
+    createLinks("$pkgDir", "$out");
 
-    my $propagatedFN = "$pkgDir/nix-support/propagated-user-env-packages";
+    my $propagatedFN = "$pkgDir/nix-support/propagated-build-inputs";
     if (-e $propagatedFN) {
         open PROP, "<$propagatedFN" or die;
         my $propagated = <PROP>;
         close PROP;
         my @propagated = split ' ', $propagated;
         foreach my $p (@propagated) {
-            $postponed{$p} = 1 unless defined $done{$p};
+            addPkg $p;
         }
     }
+        
 }
 
 
-# Convert the stuff we get from the environment back into a coherent
-# data type.
-my @paths = split ' ', $ENV{"paths"};
-my @active = split ' ', $ENV{"active"};
-my @priority = split ' ', $ENV{"priority"};
+my @args = split ' ', $ENV{"derivations"};
 
-die if scalar @paths != scalar @active;
-die if scalar @paths != scalar @priority;
-
-my %pkgs;
-
-for (my $n = 0; $n < scalar @paths; $n++) {
-    $pkgs{$paths[$n]} =
-        { active => $active[$n]
-        , priority => $priority[$n] };
+while (scalar @args > 0) {
+    my $drvPath = shift @args;
+    addPkg($drvPath);
 }
 
 
-# Symlink to the packages that have been installed explicitly by the
-# user.
-foreach my $pkg (sort (keys %pkgs)) {
-    #print $pkg, " ", $pkgs{$pkg}->{priority}, "\n";
-    addPkg($pkg, $pkgs{$pkg}->{priority}) if $pkgs{$pkg}->{active} ne "false";
-}
-
-
-# Symlink to the packages that have been "propagated" by packages
-# installed by the user (i.e., package X declares that it want Y
-# installed as well).  We do these later because they have a lower
-# priority in case of collisions.
-my $priorityCounter = 1000; # don't care about collisions
-while (scalar(keys %postponed) > 0) {
-    my @pkgDirs = keys %postponed;
-    %postponed = ();
-    foreach my $pkgDir (sort @pkgDirs) {
-        addPkg($pkgDir, $priorityCounter++);
-    }
-}
-
-
-print STDERR "created $symlinks symlinks in user environment\n";
-
-
-symlink($ENV{"manifest"}, "$out/manifest.nix") or die "cannot create manifest";
+symlink($ENV{"manifest"}, "$out/manifest") or die "cannot create manifest";

corepkgs/buildenv/default.nix

@@ -4,11 +4,6 @@ derivation {
   name = "user-environment";
   system = system;
   builder = ./builder.pl;
-  
+  derivations = derivations;
   manifest = manifest;
-
-  # !!! grmbl, need structured data for passing this in a clean way.
-  paths = derivations;
-  active = map (x: if x ? meta && x.meta ? active then x.meta.active else "true") derivations;
-  priority = map (x: if x ? meta && x.meta ? priority then x.meta.priority else "5") derivations;
 }

corepkgs/channels/Makefile.am

@@ -3,7 +3,7 @@ all-local: unpack.sh
 install-exec-local:
 	$(INSTALL) -d $(DESTDIR)$(datadir)/nix/corepkgs
 	$(INSTALL) -d $(DESTDIR)$(datadir)/nix/corepkgs/channels
-	$(INSTALL_DATA) $(srcdir)/unpack.nix $(DESTDIR)$(datadir)/nix/corepkgs/channels
+	$(INSTALL_DATA) unpack.nix $(DESTDIR)$(datadir)/nix/corepkgs/channels
 	$(INSTALL_PROGRAM) unpack.sh $(DESTDIR)$(datadir)/nix/corepkgs/channels
 
 include ../../substitute.mk

corepkgs/channels/unpack.sh.in

@@ -1,35 +1,22 @@
 #! @shell@ -e
 
-# Cygwin compatibility hack: bunzip2 expects cygwin.dll in $PATH.
-export PATH=@coreutils@
-
 @coreutils@/mkdir $out
 @coreutils@/mkdir $out/tmp
 cd $out/tmp
 
-inputs=($inputs)
-for ((n = 0; n < ${#inputs[*]}; n += 2)); do
-    channelName=${inputs[n]}
-    channelTarball=${inputs[n+1]}
-    
-    echo "unpacking channel $channelName"
-    
-    @bunzip2@ < $channelTarball | @tar@ xf -
+expr=$out/default.nix
+echo '[' > $expr
 
-    if test -e */channel-name; then
-        channelName="$(@coreutils@/cat */channel-name)"
-    fi
-
-    nr=1
-    attrName=$(echo $channelName | @tr@ -- '- ' '__')
-    dirName=$attrName
-    while test -e ../$dirName; do
-        nr=$((nr+1))
-        dirName=$attrName-$nr
-    done
-
-    @coreutils@/mv * ../$dirName # !!! hacky
+nr=0
+for i in $inputs; do
+    echo "unpacking $i"
+    @bunzip2@ < $i | @tar@ xf -
+    @coreutils@/mv * ../$nr # !!! hacky
+    echo "(import ./$nr)" >> $expr
+    nr=$(($nr + 1))
 done
 
+echo ']' >> $expr
+
 cd ..
 @coreutils@/rmdir tmp

corepkgs/nar/Makefile.am

@@ -3,7 +3,7 @@ all-local: nar.sh
 install-exec-local:
 	$(INSTALL) -d $(DESTDIR)$(datadir)/nix/corepkgs
 	$(INSTALL) -d $(DESTDIR)$(datadir)/nix/corepkgs/nar
-	$(INSTALL_DATA) $(srcdir)/nar.nix $(DESTDIR)$(datadir)/nix/corepkgs/nar
+	$(INSTALL_DATA) nar.nix $(DESTDIR)$(datadir)/nix/corepkgs/nar
 	$(INSTALL_PROGRAM) nar.sh $(DESTDIR)$(datadir)/nix/corepkgs/nar
 
 include ../../substitute.mk

corepkgs/nar/nar.nix

@@ -1,7 +1,5 @@
-{system, storePath, hashAlgo}: 
-
-derivation {
+{system, path, hashAlgo}: derivation {
   name = "nar";
   builder = ./nar.sh;
-  inherit system storePath hashAlgo;
+  inherit system path hashAlgo;
 }

corepkgs/nar/nar.sh.in

@@ -1,9 +1,9 @@
 #! @shell@ -e
 
-echo "packing $storePath into $out..."
+echo "packing $path into $out..."
 @coreutils@/mkdir $out
 dst=$out/tmp.nar.bz2
-@bindir@/nix-store --dump "$storePath" > tmp
+@bindir@/nix-store --dump "$path" > tmp
 
 @bzip2@ < tmp > $dst
 

doc/dev/release-procedures.txt

@@ -1,8 +1,5 @@
 To produce a `stable' release from the trunk:
 
--1. Update the release notes; make sure that the release date is
-    correct.
-
 0. Make sure that the trunk builds in the release supervisor.
 
 1. Branch the trunk, e.g., `svn cp .../trunk
@@ -25,8 +22,8 @@ To produce a `stable' release from the trunk:
    branch (e.g., `.../branches/0.5') should be created from the
    original revision of the trunk (since maintenance releases should
    also be tested first; hence, we cannot have `STABLE=1').  The same
-   procedure can then be followed to produce maintenance releases;
-   just substitute `.../branches/VERSION' for the trunk.
+   procedure can then be followed to produce maintenance release; just
+   substitute `.../branches/VERSION' for the trunk.
 
 7. Switch back to the trunk.
 

doc/manual/Makefile.am

@@ -1,42 +1,30 @@
-XMLLINT = $(xmllint) $(xmlflags)
-XSLTPROC = $(xsltproc) $(xmlflags) \
+ENV = SGML_CATALOG_FILES=$(docbookcatalog)
+
+XMLLINT = $(ENV) $(xmllint) $(xmlflags) --catalogs
+XSLTPROC = $(ENV) $(xsltproc) $(xmlflags) --catalogs \
  --param section.autolabel 1 \
  --param section.label.includes.component.label 1 \
  --param html.stylesheet \'style.css\' \
  --param xref.with.number.and.title 1 \
- --param toc.section.depth 3 \
- --param admon.style \'\' \
- --param callout.graphics.extension \'.gif\' \
- --param contrib.inline.enabled 0
-
-dblatex_opts = \
- -P doc.collab.show=0 \
- -P latex.output.revhistory=0
-
-# Note: we use GIF for now, since the PNGs shipped with Docbook aren't
-# transparent.
+ --param toc.section.depth 3
 
 man1_MANS = nix-env.1 nix-build.1 nix-store.1 nix-instantiate.1 \
  nix-collect-garbage.1 nix-push.1 nix-pull.1 \
- nix-prefetch-url.1 nix-channel.1 \
- nix-install-package.1 nix-hash.1 nix-copy-closure.1
-
-man8_MANS = nix-worker.8
+ nix-prefetch-url.1 nix-channel.1
 
 FIGURES = figures/user-environments.png
 
 MANUAL_SRCS = manual.xml introduction.xml installation.xml \
- package-management.xml writing-nix-expressions.xml builtins.xml \
+ package-management.xml writing-nix-expressions.xml \
  build-farm.xml \
- $(man1_MANS:.1=.xml) $(man8_MANS:.8=.xml) \
+ $(man1_MANS:.1=.xml) \
  troubleshooting.xml bugs.xml opt-common.xml opt-common-syn.xml \
  env-common.xml quick-start.xml nix-lang-ref.xml glossary.xml \
- conf-file.xml release-notes.xml \
+ conf-file.xml \
  style.css images
 
-# Note: RelaxNG validation requires xmllint >= 2.7.4.
 manual.is-valid: $(MANUAL_SRCS) version.txt
-	$(XMLLINT) --noout --nonet --xinclude --noxincludenode --relaxng $(docbookrng)/docbook.rng $<
+	$(XMLLINT) --xinclude $< | $(XMLLINT) --noout --nonet --valid -
 	touch $@
 
 version.txt:
@@ -49,54 +37,24 @@ manual.html: $(MANUAL_SRCS) manual.is-valid images
 	$(XSLTPROC) --nonet --xinclude --output manual.html \
 	  $(docbookxsl)/html/docbook.xsl manual.xml
 
-manual.pdf: $(MANUAL_SRCS) manual.is-valid images
-	if test "$(dblatex)" != ""; then \
-		$(dblatex) $(dblatex_opts) manual.xml; \
-	else \
-		echo "Please install dblatex and rerun configure."; \
-		exit 1; \
-	fi
-
-
-NEWS_OPTS = \
- --stringparam generate.toc "article nop" \
- --stringparam section.autolabel.max.depth 0 \
- --stringparam header.rule 0
-
-NEWS.html: release-notes.xml
-	$(XSLTPROC) --nonet --xinclude --output $@ $(NEWS_OPTS) \
-	  $(docbookxsl)/html/docbook.xsl release-notes.xml
-
-NEWS.txt: release-notes.xml
-	$(XSLTPROC) --nonet --xinclude quote-literals.xsl release-notes.xml | \
-	  $(XSLTPROC) --nonet --output $@.tmp.html $(NEWS_OPTS) \
-	  $(docbookxsl)/html/docbook.xsl -
-	LANG=en_US $(w3m) -dump $@.tmp.html > $@
-	rm $@.tmp.html
-
-
-all-local: manual.html NEWS.html NEWS.txt
+all-local: manual.html
 
 install-data-local: manual.html
-	$(INSTALL) -d $(DESTDIR)$(docdir)/manual
-	$(INSTALL_DATA) manual.html $(DESTDIR)$(docdir)/manual
-	ln -sf manual.html $(DESTDIR)$(docdir)/manual/index.html
-	$(INSTALL_DATA) style.css $(DESTDIR)$(docdir)/manual
-	cp -r images $(DESTDIR)$(docdir)/manual/images
-	$(INSTALL) -d $(DESTDIR)$(docdir)/manual/figures
-	$(INSTALL_DATA) $(FIGURES) $(DESTDIR)$(docdir)/manual/figures
-	$(INSTALL) -d $(DESTDIR)$(docdir)/release-notes
-	$(INSTALL_DATA) NEWS.html $(DESTDIR)$(docdir)/release-notes/index.html
-	$(INSTALL_DATA) style.css $(DESTDIR)$(docdir)/release-notes/
+	$(INSTALL) -d $(DESTDIR)$(datadir)/nix/manual
+	$(INSTALL_DATA) manual.html $(DESTDIR)$(datadir)/nix/manual
+	$(INSTALL_DATA) style.css $(DESTDIR)$(datadir)/nix/manual
+	cp -r images $(DESTDIR)$(datadir)/nix/manual/images
+	$(INSTALL) -d $(DESTDIR)$(datadir)/nix/manual/figures
+	$(INSTALL_DATA) $(FIGURES) $(DESTDIR)$(datadir)/nix/manual/figures
 
 images:
 	mkdir images
-#	cp $(docbookxsl)/images/*.gif images
+	cp $(docbookxsl)/images/*.png images
 	mkdir images/callouts
-	cp $(docbookxsl)/images/callouts/*.gif images/callouts
-	chmod -R +w images
+	cp $(docbookxsl)/images/callouts/*.png images/callouts
+	chmod +w -R images
 
-KEEP = manual.html manual.is-valid version.txt $(MANS) NEWS.html NEWS.txt
+KEEP = manual.html manual.is-valid version.txt $(MANS)
 
 EXTRA_DIST = $(MANUAL_SRCS) $(FIGURES) $(KEEP)
 

doc/manual/bugs.xml

@@ -1,8 +1,4 @@
-<appendix xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink">
-
-<title>Bugs / To-Do</title>
-
+<appendix><title>Bugs / To-Do</title>
 
 <itemizedlist>
 
@@ -15,6 +11,17 @@ generation 43 is created which is a descendant of 39, not 42.  So a
 rollback from 43 ought to go back to 39.  This is not currently
 implemented; generations form a linear sequence.</para></listitem>
 
+<listitem><para><emphasis>Build management.</emphasis> In principle it
+is already possible to do build management using Nix (by writing
+builders that perform appropriate build steps), but the Nix expression
+language is not yet powerful enough to make this pleasant (?).  The
+language should be extended with features from the <ulink
+url='http://www.cs.uu.nl/~eelco/maak/'>Maak build manager</ulink>.
+Another interesting idea is to write a <command>make</command>
+implementation that uses Nix as a back-end to support <ulink
+url='http://www.research.att.com/~bs/bs_faq.html#legacy'>legacy</ulink>
+build files.</para></listitem>
+
 <listitem><para>For security, <command>nix-push</command> manifests
 should be digitally signed, and <command>nix-pull</command> should
 verify the signatures.  The actual NAR archives in the cache do not

doc/manual/build-farm.xml

@@ -1,9 +1,4 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xml:id='chap-build-farm'>
-
-<title>Setting up a Build Farm</title>
-
+<chapter id='chap-build-farm'><title>Setting up a Build Farm</title>
 
 <para>This chapter provides some sketchy information on how to set up
 a Nix-based build farm.  Nix is particularly suited as a basis for a
@@ -36,10 +31,10 @@ build farm, since:
   builds, and Nix expressions are self-contained.</para></listitem>
 
   <listitem><para>Nix will only rebuild things that have actually
-  changed.  For instance, if the sources of a package haven't changed
-  between runs of the build farm, the package won't be rebuilt (unless
-  it was garbage-collected).  Also, dependencies typically don't
-  change very often, so they only need to be built
+  changed.  For instance, if the sources of a component haven't
+  changed between runs of the build farm, the component won't be
+  rebuild (unless it was garbage-collected).  Also, dependencies
+  typically don't change very often, so they only need to be built
   once.</para></listitem>
 
   <listitem><para>The results of a Nix build farm can be made
@@ -55,13 +50,13 @@ build farm, since:
 
 <para>TODO</para>
 
-<para>The sources of the Nix build farm are at <link
-xlink:href='https://svn.nixos.org/repos/nix/release/trunk'/>.</para>
+<para>The sources of the Nix build farm are at <ulink
+url='https://svn.cs.uu.nl:12443/repos/trace/release/trunk' />.</para>
 
 </section>
 
 
-<section xml:id='sec-distributed-builds'><title>Setting up distributed builds</title>
+<section id='sec-distributed-builds'><title>Setting up distributed builds</title>
 
 <para>You can enable distributed builds by setting the environment
 variable <envar>NIX_BUILD_HOOK</envar> to point to a program that Nix
@@ -75,7 +70,7 @@ the documentation of the <link
 linkend="envar-build-hook"><envar>NIX_BUILD_HOOK</envar>
 variable</link>.</para>
 
-<example xml:id='ex-remote-systems'><title>Remote machine configuration:
+<example id='ex-remote-systems'><title>Remote machine configuration:
 <filename>remote-systems.conf</filename></title>
 <programlisting>
 nix@mcflurry.labs.cs.uu.nl  powerpc-darwin  /home/nix/.ssh/id_quarterpounder_auto  2
@@ -84,8 +79,8 @@ nix@scratchy.labs.cs.uu.nl  i686-linux      /home/nix/.ssh/id_scratchy_auto
 </example>
 
 <para>An example build hook can be found in the Nix build farm
-sources: <link
-xlink:href='https://svn.nixos.org/repos/nix/release/trunk/common/distributed/build-remote.pl'
+sources: <ulink
+url='https://svn.cs.uu.nl:12443/repos/trace/release/trunk/common/distributed/build-remote.pl'
 />.  It should be suitable for most purposes, with maybe some minor
 adjustments.  It uses <command>ssh</command> and
 <command>rsync</command> to copy the build inputs and outputs and

doc/manual/builtins.xml

@@ -1,851 +0,0 @@
-<section xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xml:id='ssec-builtins'>
-
-<title>Built-in functions</title>
-
-
-<para>This section lists the functions and constants built into the
-Nix expression evaluator.  (The built-in function
-<function>derivation</function> is discussed above.)  Some built-ins,
-such as <function>derivation</function>, are always in scope of every
-Nix expression; you can just access them right away.  But to prevent
-polluting the namespace too much, most built-ins are not in scope.
-Instead, you can access them through the <varname>builtins</varname>
-built-in value, which is an attribute set that contains all built-in
-functions and values.  For instance, <function>derivation</function>
-is also available as <function>builtins.derivation</function>.</para>
-
-
-<variablelist>
-
-  
-  <varlistentry><term><function>abort</function> <replaceable>s</replaceable></term>
-
-    <listitem><para>Abort Nix expression evaluation, print error
-    message <replaceable>s</replaceable>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.add</function>
-  <replaceable>e1</replaceable> <replaceable>e2</replaceable></term>
-
-    <listitem><para>Return the sum of the integers
-    <replaceable>e1</replaceable> and
-    <replaceable>e2</replaceable>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.attrNames</function>
-  <replaceable>attrs</replaceable></term>
-
-    <listitem><para>Return the names of the attributes in the
-    attribute set <replaceable>attrs</replaceable> in a sorted list.
-    For instance, <literal>builtins.attrNames {y = 1; x =
-    "foo";}</literal> evaluates to <literal>["x" "y"]</literal>.
-    There is no built-in function <function>attrValues</function>, but
-    you can easily define it yourself:
-
-<programlisting>
-attrValues = attrs: map (name: builtins.getAttr name attrs) (builtins.attrNames attrs);</programlisting>
-
-    </para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>baseNameOf</function> <replaceable>s</replaceable></term>
-
-    <listitem><para>Return the <emphasis>base name</emphasis> of the
-    string <replaceable>s</replaceable>, that is, everything following
-    the final slash in the string.  This is similar to the GNU
-    <command>basename</command> command.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><varname>builtins</varname></term>
-
-    <listitem><para>The attribute set <varname>builtins</varname>
-    contains all the built-in functions and values.  You can use
-    <varname>builtins</varname> to test for the availability of
-    features in the Nix installation, e.g.,
-
-<programlisting>
-if builtins ? getEnv then builtins.getEnv "PATH" else ""</programlisting>
-
-    This allows a Nix expression to fall back gracefully on older Nix
-    installations that don’t have the desired built-in
-    function.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.compareVersions</function>
-  <replaceable>s1</replaceable> <replaceable>s2</replaceable></term>
-
-    <listitem><para>Compare two strings representing versions and
-    return <literal>-1</literal> if version
-    <replaceable>s1</replaceable> is older than version
-    <replaceable>s2</replaceable>, <literal>0</literal> if they are
-    the same, and <literal>1</literal> if
-    <replaceable>s1</replaceable> is newer than
-    <replaceable>s2</replaceable>.  The version comparison algorithm
-    is the same as the one used by <link
-    linkend="ssec-version-comparisons"><command>nix-env
-    -u</command></link>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry
-  xml:id='builtin-currentSystem'><term><varname>builtins.currentSystem</varname></term>
-
-    <listitem><para>The built-in value <varname>currentSystem</varname>
-    evaluates to the Nix platform identifier for the Nix installation
-    on which the expression is being evaluated, such as
-    <literal>"i686-linux"</literal> or
-    <literal>"powerpc-darwin"</literal>.</para></listitem>
-
-  </varlistentry>
-
-
-  <!--
-  <varlistentry><term><function>currentTime</function></term>
-
-    <listitem><para>The built-in value <varname>currentTime</varname>
-    returns the current system time in seconds since 00:00:00 1/1/1970
-    UTC.  Due to the evaluation model of Nix expressions
-    (<emphasis>maximal laziness</emphasis>), it always yields the same
-    value within an execution of Nix.</para></listitem>
-
-  </varlistentry>
-  -->
-
-  
-  <!--
-  <varlistentry><term><function>dependencyClosure</function></term>
-
-    <listitem><para>TODO</para></listitem>
-
-  </varlistentry>
-  -->
-
-  
-  <varlistentry><term><function>derivation</function>
-  <replaceable>attrs</replaceable></term>
-
-    <listitem><para><function>derivation</function> is described in
-    <xref linkend='ssec-derivation' />.</para></listitem>
-
-  </varlistentry>
-
-
-  <varlistentry><term><function>dirOf</function> <replaceable>s</replaceable></term>
-
-    <listitem><para>Return the directory part of the string
-    <replaceable>s</replaceable>, that is, everything before the final
-    slash in the string.  This is similar to the GNU
-    <command>dirname</command> command.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.div</function>
-  <replaceable>e1</replaceable> <replaceable>e2</replaceable></term>
-
-    <listitem><para>Return the quotient of the integers
-    <replaceable>e1</replaceable> and
-    <replaceable>e2</replaceable>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.filterSource</function>
-  <replaceable>e1</replaceable> <replaceable>e2</replaceable></term>
-
-    <listitem>
-
-      <para>This function allows you to copy sources into the Nix
-      store while filtering certain files.  For instance, suppose that
-      you want to use the directory <filename>source-dir</filename> as
-      an input to a Nix expression, e.g.
-
-<programlisting>
-stdenv.mkDerivation {
-  ...
-  src = ./source-dir;
-}
-</programlisting>
-
-      However, if <filename>source-dir</filename> is a Subversion
-      working copy, then all those annoying <filename>.svn</filename>
-      subdirectories will also be copied to the store.  Worse, the
-      contents of those directories may change a lot, causing lots of
-      spurious rebuilds.  With <function>filterSource</function> you
-      can filter out the <filename>.svn</filename> directories:
-
-<programlisting>
-  src = builtins.filterSource
-    (path: type: type != "directory" || baseNameOf path != ".svn")
-    ./source-dir;
-</programlisting>
-
-      </para>
-
-      <para>Thus, the first argument <replaceable>e1</replaceable>
-      must be a predicate function that is called for each regular
-      file, directory or symlink in the source tree
-      <replaceable>e2</replaceable>.  If the function returns
-      <literal>true</literal>, the file is copied to the Nix store,
-      otherwise it is omitted.  The function is called with two
-      arguments.  The first is the full path of the file.  The second
-      is a string that identifies the type of the file, which is
-      either <literal>"regular"</literal>,
-      <literal>"directory"</literal>, <literal>"symlink"</literal> or
-      <literal>"unknown"</literal> (for other kinds of files such as
-      device nodes or fifos — but note that those cannot be copied to
-      the Nix store, so if the predicate returns
-      <literal>true</literal> for them, the copy will fail).</para>
-
-    </listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.getAttr</function>
-  <replaceable>s</replaceable> <replaceable>attrs</replaceable></term>
-
-    <listitem><para><function>getAttr</function> returns the attribute
-    named <replaceable>s</replaceable> from the attribute set
-    <replaceable>attrs</replaceable>.  Evaluation aborts if the
-    attribute doesn’t exist.  This is a dynamic version of the
-    <literal>.</literal> operator, since <replaceable>s</replaceable>
-    is an expression rather than an identifier.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.getEnv</function>
-  <replaceable>s</replaceable></term>
-
-    <listitem><para><function>getEnv</function> returns the value of
-    the environment variable <replaceable>s</replaceable>, or an empty
-    string if the variable doesn’t exist.  This function should be
-    used with care, as it can introduce all sorts of nasty environment
-    dependencies in your Nix expression.</para>
-
-    <para><function>getEnv</function> is used in Nix Packages to
-    locate the file <filename>~/.nixpkgs/config.nix</filename>, which
-    contains user-local settings for Nix Packages.  (That is, it does
-    a <literal>getEnv "HOME"</literal> to locate the user’s home
-    directory.)</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.hasAttr</function>
-  <replaceable>s</replaceable> <replaceable>attrs</replaceable></term>
-
-    <listitem><para><function>hasAttr</function> returns
-    <literal>true</literal> if the attribute set
-    <replaceable>attrs</replaceable> has an attribute named
-    <replaceable>s</replaceable>, and <literal>false</literal>
-    otherwise.  This is a dynamic version of the <literal>?</literal>
-    operator, since <replaceable>s</replaceable> is an expression
-    rather than an identifier.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.head</function>
-  <replaceable>list</replaceable></term>
-
-    <listitem><para>Return the first element of a list; abort
-    evaluation if the argument isn’t a list or is an empty list.  You
-    can test whether a list is empty by comparing it with
-    <literal>[]</literal>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>import</function>
-  <replaceable>path</replaceable></term>
-
-    <listitem><para>Load, parse and return the Nix expression in the
-    file <replaceable>path</replaceable>.  Evaluation aborts if the
-    file doesn’t exist or contains an incorrect Nix
-    expression.  <function>import</function> implements Nix’s module
-    system: you can put any Nix expression (such as an attribute set
-    or a function) in a separate file, and use it from Nix expressions
-    in other files.</para>
-
-    <para>A Nix expression loaded by <function>import</function> must
-    not contain any <emphasis>free variables</emphasis> (identifiers
-    that are not defined in the Nix expression itself and are not
-    built-in).  Therefore, it cannot refer to variables that are in
-    scope at the call site.  For instance, if you have a calling
-    expression
-    
-<programlisting>
-rec {
-  x = 123;
-  y = import ./foo.nix;
-}</programlisting>
-
-    then the following <filename>foo.nix</filename> will give an
-    error:
-
-<programlisting>
-x + 456</programlisting>
-
-    since <varname>x</varname> is not in scope in
-    <filename>foo.nix</filename>.  If you want <varname>x</varname>
-    to be available in <filename>foo.nix</filename>, you should pass
-    it as a function argument:
-
-<programlisting>
-rec {
-  x = 123;
-  y = import ./foo.nix x;
-}</programlisting>
-
-    and
-
-<programlisting>
-x: x + 456</programlisting>
-
-    (The function argument doesn’t have to be called
-    <varname>x</varname> in <filename>foo.nix</filename>; any name
-    would work.)</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.intersectAttrs</function>
-  <replaceable>e1</replaceable> <replaceable>e2</replaceable></term>
-
-    <listitem><para>Return an attribute set consisting of the
-    attributes in the set <replaceable>e2</replaceable> that also
-    exist in the set <replaceable>e1</replaceable>.</para></listitem>
-
-  </varlistentry>
-        
-    
-  <varlistentry><term><function>builtins.isAttrs</function>
-  <replaceable>e</replaceable></term>
-
-    <listitem><para>Return <literal>true</literal> if
-    <replaceable>e</replaceable> evaluates to an attribute set, and
-    <literal>false</literal> otherwise.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.isList</function>
-  <replaceable>e</replaceable></term>
-
-    <listitem><para>Return <literal>true</literal> if
-    <replaceable>e</replaceable> evaluates to a list, and
-    <literal>false</literal> otherwise.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.isFunction</function>
-  <replaceable>e</replaceable></term>
-
-    <listitem><para>Return <literal>true</literal> if
-    <replaceable>e</replaceable> evaluates to a function, and
-    <literal>false</literal> otherwise.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.isString</function>
-  <replaceable>e</replaceable></term>
-
-    <listitem><para>Return <literal>true</literal> if
-    <replaceable>e</replaceable> evaluates to a string, and
-    <literal>false</literal> otherwise.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.isInt</function>
-  <replaceable>e</replaceable></term>
-
-    <listitem><para>Return <literal>true</literal> if
-    <replaceable>e</replaceable> evaluates to a int, and
-    <literal>false</literal> otherwise.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.isBool</function>
-  <replaceable>e</replaceable></term>
-
-    <listitem><para>Return <literal>true</literal> if
-    <replaceable>e</replaceable> evaluates to a bool, and
-    <literal>false</literal> otherwise.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>isNull</function>
-  <replaceable>e</replaceable></term>
-
-    <listitem><para>Return <literal>true</literal> if
-    <replaceable>e</replaceable> evaluates to <literal>null</literal>,
-    and <literal>false</literal> otherwise.</para>
-
-    <warning><para>This function is <emphasis>deprecated</emphasis>;
-    just write <literal>e == null</literal> instead.</para></warning>
-    
-    </listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.length</function>
-  <replaceable>e</replaceable></term>
-
-    <listitem><para>Return the length of the list
-    <replaceable>e</replaceable>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.lessThan</function>
-  <replaceable>e1</replaceable> <replaceable>e2</replaceable></term>
-
-    <listitem><para>Return <literal>true</literal> if the integer
-    <replaceable>e1</replaceable> is less than the integer
-    <replaceable>e2</replaceable>, and <literal>false</literal>
-    otherwise.  Evaluation aborts if either
-    <replaceable>e1</replaceable> or <replaceable>e2</replaceable>
-    does not evaluate to an integer.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.listToAttrs</function>
-  <replaceable>e</replaceable></term>
-
-    <listitem><para>Construct an attribute set from a list specifying
-    the names and values of each attribute.  Each element of the list
-    should be an attribute set consisting of a string-valued attribute
-    <varname>name</varname> specifying the name of the attribute, and
-    an attribute <varname>value</varname> specifying its value.
-    Example:
-
-<programlisting>
-builtins.listToAttrs [
-  {name = "foo"; value = 123;}
-  {name = "bar"; value = 456;}
-]
-</programlisting>
-
-    evaluates to
-
-<programlisting>
-{ foo = 123; bar = 456; }
-</programlisting>
-
-    </para></listitem>
-
-  </varlistentry>
-  
-  <varlistentry><term><function>map</function>
-  <replaceable>f</replaceable> <replaceable>list</replaceable></term>
-
-    <listitem><para>Apply the function <replaceable>f</replaceable> to
-    each element in the list <replaceable>list</replaceable>.  For
-    example,
-
-<programlisting>
-map (x: "foo" + x) ["bar" "bla" "abc"]</programlisting>
-
-    evaluates to <literal>["foobar" "foobla"
-    "fooabc"]</literal>.</para></listitem>
-    
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.mul</function>
-  <replaceable>e1</replaceable> <replaceable>e2</replaceable></term>
-
-    <listitem><para>Return the product of the integers
-    <replaceable>e1</replaceable> and
-    <replaceable>e2</replaceable>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.parseDrvName</function>
-  <replaceable>s</replaceable></term>
-
-    <listitem><para>Split the string <replaceable>s</replaceable> into
-    a package name and version.  The package name is everything up to
-    but not including the first dash followed by a digit, and the
-    version is everything following that dash.  The result is returned
-    in an attribute set <literal>{name, version}</literal>.  Thus,
-    <literal>builtins.parseDrvName "nix-0.12pre12876"</literal>
-    returns <literal>{name = "nix"; version =
-    "0.12pre12876";}</literal>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.pathExists</function>
-  <replaceable>path</replaceable></term>
-
-    <listitem><para>Return <literal>true</literal> if the path
-    <replaceable>path</replaceable> exists, and
-    <literal>false</literal> otherwise.  One application of this
-    function is to conditionally include a Nix expression containing
-    user configuration:
-
-<programlisting>
-let
-  fileName = builtins.getEnv "CONFIG_FILE";
-  config =
-    if fileName != "" &amp;&amp; builtins.pathExists (builtins.toPath fileName)
-    then import (builtins.toPath fileName)
-    else { someSetting = false; }; <lineannotation># default configuration</lineannotation>
-in config.someSetting</programlisting>
-
-    (Note that <envar>CONFIG_FILE</envar> must be an absolute path for
-    this to work.)</para></listitem>
-
-  </varlistentry>
-
-
-  <!--
-  <varlistentry><term><function>relativise</function></term>
-
-    <listitem><para>TODO</para></listitem>
-
-  </varlistentry>
-  -->
-
-  
-  <varlistentry><term><function>builtins.readFile</function>
-  <replaceable>path</replaceable></term>
-
-    <listitem><para>Return the contents of the file
-    <replaceable>path</replaceable> as a string.</para></listitem>
-
-  </varlistentry>
-  
-  
-  <varlistentry><term><function>removeAttrs</function>
-  <replaceable>attrs</replaceable> <replaceable>list</replaceable></term>
-
-    <listitem><para>Remove the attributes listed in
-    <replaceable>list</replaceable> from the attribute set
-    <replaceable>attrs</replaceable>.  The attributes don’t have to
-    exist in <replaceable>attrs</replaceable>. For instance,
-
-<screen>
-removeAttrs { x = 1; y = 2; z = 3; } ["a" "x" "z"]</screen>
-
-    evaluates to <literal>{y = 2;}</literal>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.stringLength</function>
-  <replaceable>e</replaceable></term>
-
-    <listitem><para>Return the length of the string
-    <replaceable>e</replaceable>.  If <replaceable>e</replaceable> is
-    not a string, evaluation is aborted.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.sub</function>
-  <replaceable>e1</replaceable> <replaceable>e2</replaceable></term>
-
-    <listitem><para>Return the difference between the integers
-    <replaceable>e1</replaceable> and
-    <replaceable>e2</replaceable>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.substring</function>
-  <replaceable>start</replaceable> <replaceable>len</replaceable>
-  <replaceable>s</replaceable></term>
-
-    <listitem><para>Return the substring of
-    <replaceable>s</replaceable> from character position
-    <replaceable>start</replaceable> (zero-based) up to but not
-    including <replaceable>start + len</replaceable>.  If
-    <replaceable>start</replaceable> is greater than the length of the
-    string, an empty string is returned, and if <replaceable>start +
-    len</replaceable> lies beyond the end of the string, only the
-    substring up to the end of the string is returned.
-    <replaceable>start</replaceable> must be
-    non-negative.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.tail</function>
-  <replaceable>list</replaceable></term>
-
-    <listitem><para>Return the second to last elements of a list;
-    abort evaluation if the argument isn’t a list or is an empty
-    list.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>throw</function>
-  <replaceable>s</replaceable></term>
-
-    <listitem><para>Throw an error message
-    <replaceable>s</replaceable>.  This usually aborts Nix expression
-    evaluation, but in <command>nix-env -qa</command> and other
-    commands that try to evaluate a set of derivations to get
-    information about those derivations, a derivation that throws an
-    error is silently skipped (which is not the case for
-    <function>abort</function>).</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry
-  xml:id='builtin-toFile'><term><function>builtins.toFile</function>
-  <replaceable>name</replaceable> <replaceable>s</replaceable></term>
-
-    <listitem><para>Store the string <replaceable>s</replaceable> in a
-    file in the Nix store and return its path.  The file has suffix
-    <replaceable>name</replaceable>.  This file can be used as an
-    input to derivations.  One application is to write builders
-    “inline”.  For instance, the following Nix expression combines
-    <xref linkend='ex-hello-nix' /> and <xref
-    linkend='ex-hello-builder' /> into one file:
-
-<programlisting>
-{stdenv, fetchurl, perl}:
-
-stdenv.mkDerivation {
-  name = "hello-2.1.1";
-  
-  builder = builtins.toFile "builder.sh" "
-    source $stdenv/setup
-
-    PATH=$perl/bin:$PATH
-
-    tar xvfz $src
-    cd hello-*
-    ./configure --prefix=$out
-    make
-    make install
-  ";
-
-  src = fetchurl {
-    url = http://nix.cs.uu.nl/dist/tarballs/hello-2.1.1.tar.gz;
-    md5 = "70c9ccf9fac07f762c24f2df2290784d";
-  };
-  inherit perl;
-}</programlisting>
-  
-    </para>
-
-    <para>It is even possible for one file to refer to another, e.g.,
-
-<programlisting>
-  builder = let
-    configFile = builtins.toFile "foo.conf" "
-      # This is some dummy configuration file.
-      <replaceable>...</replaceable>
-    ";
-  in builtins.toFile "builder.sh" "
-    source $stdenv/setup
-    <replaceable>...</replaceable>
-    cp ${configFile} $out/etc/foo.conf
-  ";</programlisting>
-
-    Note that <literal>${configFile}</literal> is an antiquotation
-    (see <xref linkend='ssec-values' />), so the result of the
-    expression <literal>configFile</literal> (i.e., a path like
-    <filename>/nix/store/m7p7jfny445k...-foo.conf</filename>) will be
-    spliced into the resulting string.</para>
-
-    <para>It is however <emphasis>not</emphasis> allowed to have files
-    mutually referring to each other, like so:
-
-<programlisting>
-let
-  foo = builtins.toFile "foo" "...${bar}...";
-  bar = builtins.toFile "bar" "...${foo}...";
-in foo</programlisting>
-
-    This is not allowed because it would cause a cyclic dependency in
-    the computation of the cryptographic hashes for
-    <varname>foo</varname> and <varname>bar</varname>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.toPath</function> <replaceable>s</replaceable></term>
-
-    <listitem><para>Convert the string value
-    <replaceable>s</replaceable> into a path value.  The string
-    <replaceable>s</replaceable> must represent an absolute path
-    (i.e., must start with <literal>/</literal>).  The path need not
-    exist.  The resulting path is canonicalised, e.g.,
-    <literal>builtins.toPath "//foo/xyzzy/../bar/"</literal> returns
-    <literal>/foo/bar</literal>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>toString</function> <replaceable>e</replaceable></term>
-
-    <listitem><para>Convert the expression
-    <replaceable>e</replaceable> to a string.
-    <replaceable>e</replaceable> can be a string (in which case
-    <function>toString</function> is a no-op) or a path (e.g.,
-    <literal>toString /foo/bar</literal> yields
-    <literal>"/foo/bar"</literal>.</para></listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry xml:id='builtin-toXML'><term><function>builtins.toXML</function> <replaceable>e</replaceable></term>
-
-    <listitem><para>Return a string containing an XML representation
-    of <replaceable>e</replaceable>.  The main application for
-    <function>toXML</function> is to communicate information with the
-    builder in a more structured format than plain environment
-    variables.</para>
-
-    <!-- TODO: more formally describe the schema of the XML
-    representation -->
-
-    <para><xref linkend='ex-toxml' /> shows an example where this is
-    the case.  The builder is supposed to generate the configuration
-    file for a <link xlink:href='http://jetty.mortbay.org/'>Jetty
-    servlet container</link>.  A servlet container contains a number
-    of servlets (<filename>*.war</filename> files) each exported under
-    a specific URI prefix.  So the servlet configuration is a list of
-    attribute sets containing the <varname>path</varname> and
-    <varname>war</varname> of the servlet (<xref
-    linkend='ex-toxml-co-servlets' />).  This kind of information is
-    difficult to communicate with the normal method of passing
-    information through an environment variable, which just
-    concatenates everything together into a string (which might just
-    work in this case, but wouldn’t work if fields are optional or
-    contain lists themselves).  Instead the Nix expression is
-    converted to an XML representation with
-    <function>toXML</function>, which is unambiguous and can easily be
-    processed with the appropriate tools.  For instance, in the
-    example an XSLT stylesheet (<xref linkend='ex-toxml-co-stylesheet'
-    />) is applied to it (<xref linkend='ex-toxml-co-apply' />) to
-    generate the XML configuration file for the Jetty server.  The XML
-    representation produced from <xref linkend='ex-toxml-co-servlets'
-    /> by <function>toXML</function> is shown in <xref
-    linkend='ex-toxml-result' />.</para>
-
-    <para>Note that <xref linkend='ex-toxml' /> uses the <function
-    linkend='builtin-toFile'>toFile</function> built-in to write the
-    builder and the stylesheet “inline” in the Nix expression.  The
-    path of the stylesheet is spliced into the builder at
-    <literal>xsltproc ${stylesheet}
-    <replaceable>...</replaceable></literal>.</para>
-
-    <example xml:id='ex-toxml'><title>Passing information to a builder
-    using <function>toXML</function></title>
-    
-<programlisting><![CDATA[
-{stdenv, fetchurl, libxslt, jira, uberwiki}:
-
-stdenv.mkDerivation (rec {
-  name = "web-server";
-
-  buildInputs = [libxslt];
-  
-  builder = builtins.toFile "builder.sh" "
-    source $stdenv/setup
-    mkdir $out
-    echo $servlets | xsltproc ${stylesheet} - > $out/server-conf.xml]]> <co xml:id='ex-toxml-co-apply' /> <![CDATA[
-  ";
-
-  stylesheet = builtins.toFile "stylesheet.xsl"]]> <co xml:id='ex-toxml-co-stylesheet' /> <![CDATA[
-   "<?xml version='1.0' encoding='UTF-8'?>
-    <xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform' version='1.0'>
-      <xsl:template match='/'>
-        <Configure>
-          <xsl:for-each select='/expr/list/attrs'>
-            <Call name='addWebApplication'>
-              <Arg><xsl:value-of select=\"attr[@name = 'path']/string/@value\" /></Arg>
-              <Arg><xsl:value-of select=\"attr[@name = 'war']/path/@value\" /></Arg>
-            </Call>
-          </xsl:for-each>
-        </Configure>
-      </xsl:template>
-    </xsl:stylesheet>
-  ";
-
-  servlets = builtins.toXML []]> <co xml:id='ex-toxml-co-servlets' /> <![CDATA[
-    { path = "/bugtracker"; war = jira + "/lib/atlassian-jira.war"; }
-    { path = "/wiki"; war = uberwiki + "/uberwiki.war"; }
-  ];
-})]]></programlisting>
-
-    </example>
-
-    <example xml:id='ex-toxml-result'><title>XML representation produced by
-    <function>toXML</function></title>
-    
-<programlisting><![CDATA[<?xml version='1.0' encoding='utf-8'?>
-<expr>
-  <list>
-    <attrs>
-      <attr name="path">
-        <string value="/bugtracker" />
-      </attr>
-      <attr name="war">
-        <path value="/nix/store/d1jh9pasa7k2...-jira/lib/atlassian-jira.war" />
-      </attr>
-    </attrs>
-    <attrs>
-      <attr name="path">
-        <string value="/wiki" />
-      </attr>
-      <attr name="war">
-        <path value="/nix/store/y6423b1yi4sx...-uberwiki/uberwiki.war" />
-      </attr>
-    </attrs>
-  </list>
-</expr>]]></programlisting>
-
-    </example>
-
-    </listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><function>builtins.trace</function>
-  <replaceable>e1</replaceable> <replaceable>e2</replaceable></term>
-
-    <listitem><para>Evaluate <replaceable>e1</replaceable> and print its
-    abstract syntax representation on standard error.  Then return
-    <replaceable>e2</replaceable>.  This function is useful for
-    debugging.</para></listitem>
-
-  </varlistentry>
-
-  
-</variablelist>
-
-
-</section>

doc/manual/conf-file.xml

@@ -1,9 +1,4 @@
-<section xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xml:id="sec-conf-file">
-
-<title>Nix configuration file</title>
-
+<sect1 id="sec-conf-file"><title>Nix configuration file</title>
 
 <para>A number of persistent settings of Nix are stored in the file
 <filename><replaceable>prefix</replaceable>/etc/nix/nix.conf</filename>.
@@ -12,7 +7,7 @@ This file is a list of <literal><replaceable>name</replaceable> =
 Comments start with a <literal>#</literal> character.  An example
 configuration file is shown in <xref linkend="ex-nix-conf" />.</para>
 
-<example xml:id='ex-nix-conf'><title>Nix configuration file</title>
+<example id='ex-nix-conf'><title>Nix configuration file</title>
 
 <programlisting>
 gc-keep-outputs = true       # Nice for developers
@@ -25,8 +20,7 @@ env-keep-derivations = false
 
 <variablelist>
 
-  
-  <varlistentry xml:id="conf-gc-keep-outputs"><term><literal>gc-keep-outputs</literal></term>
+  <varlistentry id="conf-gc-keep-outputs"><term><literal>gc-keep-outputs</literal></term>
 
     <listitem><para>If <literal>true</literal>, the garbage collector
     will keep the outputs of non-garbage derivations.  If
@@ -41,9 +35,8 @@ env-keep-derivations = false
     this option to <literal>true</literal>.</para></listitem>
 
   </varlistentry>
-  
 
-  <varlistentry xml:id="conf-gc-keep-derivations"><term><literal>gc-keep-derivations</literal></term>
+  <varlistentry id="conf-gc-keep-derivations"><term><literal>gc-keep-derivations</literal></term>
 
     <listitem><para>If <literal>true</literal> (default), the garbage
     collector will keep the derivations from which non-garbage store
@@ -59,7 +52,6 @@ env-keep-derivations = false
 
   </varlistentry>
 
-  
   <varlistentry><term><literal>env-keep-derivations</literal></term>
 
     <listitem><para>If <literal>false</literal> (default), derivations
@@ -83,190 +75,8 @@ env-keep-derivations = false
 
   </varlistentry>
 
-  
-  <varlistentry xml:id="conf-build-max-jobs"><term><literal>build-max-jobs</literal></term>
-
-    <listitem><para>This option defines the maximum number of jobs
-    that Nix will try to build in parallel.  The default is
-    <literal>1</literal>.  You should generally set it to the number
-    of CPUs in your system (e.g., <literal>2</literal> on a Athlon 64
-    X2).  It can be overriden using the <option
-    linkend='opt-max-jobs'>--max-jobs</option> (<option>-j</option>)
-    command line switch.</para></listitem>
-
-  </varlistentry>
-
-
-  <varlistentry xml:id="conf-build-cores"><term><literal>build-cores</literal></term>
-
-    <listitem><para>Sets the value of the
-    <envar>NIX_BUILD_CORES</envar> environment variable in the
-    invocation of builders.  Builders can use this variable at their
-    discretion to control the maximum amount of parallelism.  For
-    instance, in Nixpkgs, if the derivation attribute
-    <varname>enableParallelBuilding</varname> is set to
-    <literal>true</literal>, the builder passes the
-    <option>-j<replaceable>N</replaceable></option> flag to GNU Make.
-    It can be overriden using the <option
-    linkend='opt-cores'>--cores</option> command line switch and
-    defaults to <literal>1</literal>.  The value <literal>0</literal>
-    means that the builder should use all available CPU cores in the
-    system.</para></listitem>
-
-  </varlistentry>
-
-
-  <varlistentry xml:id="conf-build-max-silent-time"><term><literal>build-max-silent-time</literal></term>
-
-    <listitem>
-
-      <para>This option defines the maximum number of seconds that a
-      builder can go without producing any data on standard output or
-      standard error.  This is useful (for instance in a automated
-      build system) to catch builds that are stuck in an infinite
-      loop, or to catch remote builds that are hanging due to network
-      problems.  It can be overriden using the <option
-      linkend="opt-max-silent-time">--max-silent-time</option> command
-      line switch.</para>
-
-      <para>The value <literal>0</literal> means that there is no
-      timeout.  This is also the default.</para>
-
-    </listitem>
-
-  </varlistentry>
-
-
-  <varlistentry xml:id="conf-build-users-group"><term><literal>build-users-group</literal></term>
-
-    <listitem><para>This options specifies the Unix group containing
-    the Nix build user accounts.  In multi-user Nix installations,
-    builds should not be performed by the Nix account since that would
-    allow users to arbitrarily modify the Nix store and database by
-    supplying specially crafted builders; and they cannot be performed
-    by the calling user since that would allow him/her to influence
-    the build result.</para>
-
-    <para>Therefore, if this option is non-empty and specifies a valid
-    group, builds will be performed under the user accounts that are a
-    member of the group specified here (as listed in
-    <filename>/etc/group</filename>).  Those user accounts should not
-    be used for any other purpose!</para>
-
-    <para>Nix will never run two builds under the same user account at
-    the same time.  This is to prevent an obvious security hole: a
-    malicious user writing a Nix expression that modifies the build
-    result of a legitimate Nix expression being built by another user.
-    Therefore it is good to have as many Nix build user accounts as
-    you can spare.  (Remember: uids are cheap.)</para>
-
-    <para>The build users should have permission to create files in
-    the Nix store, but not delete them.  Therefore,
-    <filename>/nix/store</filename> should be owned by the Nix
-    account, its group should be the group specified here, and its
-    mode should be <literal>1775</literal>.</para>
-
-    <para>If the build users group is empty, builds will be performed
-    under the uid of the Nix process (that is, the uid of the caller
-    if <envar>NIX_REMOTE</envar> is empty, the uid under which the Nix
-    daemon runs if <envar>NIX_REMOTE</envar> is
-    <literal>daemon</literal>, or the uid that owns the setuid
-    <command>nix-worker</command> program if <envar>NIX_REMOTE</envar>
-    is <literal>slave</literal>).  Obviously, this should not be used
-    in multi-user settings with untrusted users.</para>
-
-    </listitem>
-
-  </varlistentry>
-
-
-  <varlistentry><term><literal>build-use-chroot</literal></term>
-
-    <listitem><para>If set to <literal>true</literal>, builds will be
-    performed in a <emphasis>chroot environment</emphasis>, i.e., the
-    build will be isolated from the normal file system hierarchy and
-    will only see the Nix store, the temporary build directory, and
-    the directories configured with the <link
-    linkend='conf-build-chroot-dirs'><literal>build-chroot-dirs</literal>
-    option</link> (such as <filename>/proc</filename> and
-    <filename>/dev</filename>).  This is useful to prevent undeclared
-    dependencies on files in directories such as
-    <filename>/usr/bin</filename>.</para>
-
-    <para>The use of a chroot requires that Nix is run as root (but
-    you can still use the <link
-    linkend='conf-build-users-group'>“build users” feature</link> to
-    perform builds under different users than root).  Currently,
-    chroot builds only work on Linux because Nix uses “bind mounts” to
-    make the Nix store and other directories available inside the
-    chroot.</para>
-
-    </listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry xml:id="conf-build-chroot-dirs"><term><literal>build-chroot-dirs</literal></term>
-
-    <listitem><para>When builds are performed in a chroot environment,
-    Nix will mount (using <command>mount --bind</command> on Linux)
-    some directories from the normal file system hierarchy inside the
-    chroot.  These are the Nix store, the temporary build directory
-    (usually
-    <filename>/tmp/nix-<replaceable>pid</replaceable>-<replaceable>number</replaceable></filename>)
-    and the directories listed here.  The default is <literal>dev
-    /proc</literal>.  Files in <filename>/dev</filename> (such as
-    <filename>/dev/null</filename>) are needed by many builds, and
-    some files in <filename>/proc</filename> may also be needed
-    occasionally.</para>
-
-    <para>The value used on NixOS is
-    
-<programlisting>
-build-use-chroot = /dev /proc /bin</programlisting>
-
-    to make the <filename>/bin/sh</filename> symlink available (which
-    is still needed by many builders).</para>
-
-    </listitem>
-
-  </varlistentry>
-
-  
-  <varlistentry><term><literal>system</literal></term>
-
-    <listitem><para>This option specifies the canonical Nix system
-    name of the current installation, such as
-    <literal>i686-linux</literal> or
-    <literal>powerpc-darwin</literal>.  Nix can only build derivations
-    whose <literal>system</literal> attribute equals the value
-    specified here.  In general, it never makes sense to modify this
-    value from its default, since you can use it to ‘lie’ about the
-    platform you are building on (e.g., perform a Mac OS build on a
-    Linux machine; the result would obviously be wrong).  It only
-    makes sense if the Nix binaries can run on multiple platforms,
-    e.g., ‘universal binaries’ that run on <literal>powerpc-darwin</literal> and
-    <literal>i686-darwin</literal>.</para>
-
-    <para>It defaults to the canonical Nix system name detected by
-    <filename>configure</filename> at build time.</para></listitem>
-
-  </varlistentry>
-
-
-  <varlistentry><term><literal>fsync-metadata</literal></term>
-
-    <listitem><para>If set to <literal>true</literal>, changes to the
-    Nix store metadata (in <filename>/nix/var/nix/db</filename>) are
-    synchronously flushed to disk.  This improves robustness in case
-    of system crashes, but reduces performance.  The default is
-    <literal>false</literal>.</para></listitem>
-
-  </varlistentry>
-    
 </variablelist>
 
 </para>
 
-
-</section>
+</sect1>

doc/manual/env-common.xml

@@ -1,15 +1,21 @@
-<section xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xml:id="sec-common-env">
-
-<title>Common environment variables</title>
-
+<sect1 id="sec-common-env"><title>Common environment variables</title>
 
 <para>Most Nix commands interpret the following environment variables:</para>
 
 <variablelist>
 
   
+<varlistentry><term><envar>NIX_ROOT</envar></term>
+
+  <listitem><para>If <envar>NIX_ROOT</envar> is set, the Nix command
+  will on startup perform a <function>chroot()</function> to the
+  specified directory.  This is useful in certain bootstrapping
+  situations (e.g., when installing a Nix installation onto a hard
+  disk from CD-ROM).</para></listitem>
+
+</varlistentry>
+
+  
 <varlistentry><term><envar>NIX_IGNORE_SYMLINK_STORE</envar></term>
 
   <listitem>
@@ -112,7 +118,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
 </varlistentry>
 
 
-<varlistentry xml:id="envar-build-hook"><term><envar>NIX_BUILD_HOOK</envar></term>
+<varlistentry id="envar-build-hook"><term><envar>NIX_BUILD_HOOK</envar></term>
 
   <listitem>
 
@@ -151,12 +157,12 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
   <para>On the basis of this information, and whatever persistent
   state the build hook keeps about other machines and their current
   load, it has to decide what to do with the build.  It should print
-  out on standard error one of the following responses (terminated by
-  a newline, <literal>"\n"</literal>):
+  out on file descriptor 3 one of the following responses (terminated
+  by a newline, <literal>"\n"</literal>):
 
   <variablelist>
 
-    <varlistentry><term><literal># decline</literal></term>
+    <varlistentry><term><literal>decline</literal></term>
 
       <listitem><para>The build hook is not willing or able to perform
       the build; the calling Nix process should do the build itself,
@@ -164,7 +170,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
 
     </varlistentry>
 
-    <varlistentry><term><literal># postpone</literal></term>
+    <varlistentry><term><literal>postpone</literal></term>
 
       <listitem><para>The build hook cannot perform the build now, but
       can do so in the future (e.g., because all available build slots
@@ -174,7 +180,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
 
     </varlistentry>
 
-    <varlistentry><term><literal># accept</literal></term>
+    <varlistentry><term><literal>accept</literal></term>
 
       <listitem><para>The build hook has accepted the
       build.</para></listitem>
@@ -185,12 +191,37 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
 
   </para>
 
-  <para>After sending <literal># accept</literal>, the hook should
-  read one line from standard input, which will be the string
-  <literal>okay</literal>.  It can then proceed with the build.
-  Before sending <literal>okay</literal>, Nix will store in the hook’s
-  current directory a number of text files that contain information
-  about the derivation:
+  <para>If the build hook accepts the build, it is possible that it is
+  no longer necessary to do the build because some other process has
+  performed the build in the meantime.  To prevent races, the hook
+  must read from file descriptor 4 a single line that tells it whether
+  to continue:
+
+  <variablelist>
+
+    <varlistentry><term><literal>cancel</literal></term>
+
+      <listitem><para>The build has already been done, so the hook
+      should exit.</para></listitem>
+
+    </varlistentry>
+  
+    <varlistentry><term><literal>okay</literal></term>
+
+      <listitem><para>The hook should proceed with the build.  At this
+      point, the calling Nix process has acquired locks on the output
+      path, so no other Nix process will perform the
+      build.</para></listitem>
+
+    </varlistentry>
+
+  </variablelist>
+
+  </para>
+
+  <para>If the hook has been told to proceed, Nix will store in the
+  hook’s current directory a number of text files that contain
+  information about the derivation:
 
   <variablelist>
 
@@ -230,9 +261,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
   <para>The hook should copy the inputs to the remote machine,
   register the validity of the inputs, perform the remote build, and
   copy the outputs back to the local machine.  An exit code other than
-  <literal>0</literal> indicates that the hook has failed.  An exit
-  code equal to 100 means that the remote build failed (as opposed to,
-  e.g., a network error).</para>
+  <literal>0</literal> indicates that the hook has failed.</para>
 
   </listitem>
 
@@ -240,50 +269,6 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
 </varlistentry>
 
 
-<varlistentry xml:id="envar-remote"><term><envar>NIX_REMOTE</envar></term>
-
-  <listitem><para>This variable should be set to
-  <literal>daemon</literal> if you want to use the Nix daemon to
-  executed Nix operations, which is necessary in <link
-  linkend="ssec-multi-user">multi-user Nix installations</link>.
-  Otherwise, it should be left unset.</para></listitem>
-
-</varlistentry>
-
-    
-<varlistentry xml:id="envar-other-stores"><term><envar>NIX_OTHER_STORES</envar></term>
-
-  <listitem><para>This variable contains the paths of remote Nix
-  installations from whichs paths can be copied, separated by colons.
-  See <xref linkend="sec-sharing-packages" /> for details.  Each path
-  should be the <filename>/nix</filename> directory of a remote Nix
-  installation (i.e., not the <filename>/nix/store</filename>
-  directory).  The paths are subject to globbing, so you can set it so
-  something like <literal>/var/run/nix/remote-stores/*/nix</literal>
-  and mount multiple remote filesystems in
-  <literal>/var/run/nix/remote-stores</literal>.</para>
-
-  <para>Note that if you’re building through the <link
-  linkend="sec-nix-worker">Nix daemon</link>, the only setting for
-  this variable that matters is the one that the
-  <command>nix-worker</command> process uses.  So if you want to
-  change it, you have to restart the daemon.</para></listitem>
-
-</varlistentry>
-
-
-<varlistentry><term><envar>GC_INITIAL_HEAP_SIZE</envar></term>
-
-  <listitem><para>If Nix has been configured to use the Boehm garbage
-  collector, this variable sets the initial size of the heap in bytes.
-  It defaults to 384 MiB.  Setting it to a low value reduces memory
-  consumption, but will increase runtime due to the overhead of
-  garbage collection.</para></listitem>
-
-</varlistentry>
-
-    
 </variablelist>
 
-
-</section>
+</sect1>

doc/manual/glossary.xml

@@ -1,13 +1,9 @@
-<appendix xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink">
-
-<title>Glossary</title>
-
+<appendix><title>Glossary</title>
 
 <glosslist>
 
 
-<glossentry xml:id="gloss-derivation"><glossterm>derivation</glossterm>
+<glossentry id="gloss-derivation"><glossterm>derivation</glossterm>
 
   <glossdef><para>A description of a build action.  The result of a
   derivation is a store object.  Derivations are typically specified
@@ -50,7 +46,7 @@
 </glossentry>
 
 
-<glossentry xml:id="gloss-substitute"><glossterm>substitute</glossterm>
+<glossentry id="gloss-substitute"><glossterm>substitute</glossterm>
 
   <glossdef><para>A substitute is a command invocation stored in the
   Nix database that describes how to build a store object, bypassing
@@ -74,16 +70,16 @@
 
 <glossentry><glossterm>Nix expression</glossterm>
 
-  <glossdef><para>A high-level description of software packages and
+  <glossdef><para>A high-level description of software components and
   compositions thereof.  Deploying software using Nix entails writing
-  Nix expressions for your packages.  Nix expressions are translated
+  Nix expressions for your components.  Nix expressions are translated
   to derivations that are stored in the Nix store.  These derivations
   can then be built.</para></glossdef>
 
 </glossentry>
 
 
-<glossentry xml:id="gloss-reference"><glossterm>reference</glossterm>
+<glossentry id="gloss-reference"><glossterm>reference</glossterm>
 
   <glossdef><para>A store path <varname>P</varname> is said to have a
   reference to a store path <varname>Q</varname> if the store object
@@ -96,7 +92,7 @@
 </glossentry>
 
 
-<glossentry xml:id="gloss-closure"><glossterm>closure</glossterm>
+<glossentry id="gloss-closure"><glossterm>closure</glossterm>
 
   <glossdef><para>The closure of a store path is the set of store
   paths that are directly or indirectly “reachable” from that store
@@ -112,14 +108,14 @@
 </glossentry>
 
 
-<glossentry xml:id="gloss-output-path"><glossterm>output path</glossterm>
+<glossentry id="gloss-output-path"><glossterm>output path</glossterm>
 
   <glossdef><para>A store path produced by a derivation.</para></glossdef>
 
 </glossentry>
 
 
-<glossentry xml:id="gloss-deriver"><glossterm>deriver</glossterm>
+<glossentry id="gloss-deriver"><glossterm>deriver</glossterm>
 
   <glossdef><para>The deriver of an <link
   linkend="gloss-output-path">output path</link> is the store
@@ -128,7 +124,7 @@
 </glossentry>
 
 
-<glossentry xml:id="gloss-validity"><glossterm>validity</glossterm>
+<glossentry id="gloss-validity"><glossterm>validity</glossterm>
 
   <glossdef><para>A store path is considered
   <emphasis>valid</emphasis> if it exists in the file system, is
@@ -138,7 +134,7 @@
 </glossentry>
 
 
-<glossentry xml:id="gloss-user-env"><glossterm>user environment</glossterm>
+<glossentry id="gloss-user-env"><glossterm>user environment</glossterm>
 
   <glossdef><para>An automatically generated store object that
   consists of a set of symlinks to “active” applications, i.e., other
@@ -151,7 +147,7 @@
 </glossentry>
 
 
-<glossentry xml:id="gloss-profile"><glossterm>profile</glossterm>
+<glossentry id="gloss-profile"><glossterm>profile</glossterm>
 
   <glossdef><para>A symlink to the current <link
   linkend="gloss-user-env">user environment</link> of a user, e.g.,

doc/manual/installation.xml

@@ -1,72 +1,36 @@
-<?xml version="1.0" encoding="utf-8"?>
-<chapter xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xml:id="chap-installation">
-
-<title>Installation</title>
+<chapter id='chap-installation'><title>Installation</title>
 
 
-<section><title>Supported platforms</title>
+<sect1><title>Obtaining Nix</title>
 
-<para>Nix is currently supported on the following platforms:
-
-<itemizedlist>
-
-  <listitem><para>Linux (particularly on x86, x86_64, and
-  PowerPC).</para></listitem>
-
-  <listitem><para>Mac OS X, both on Intel and
-  PowerPC.</para></listitem>
-
-  <listitem><para>FreeBSD (only tested on Intel).</para></listitem>
-
-  <listitem><para>Windows through <link
-  xlink:href="http://www.cygwin.com/">Cygwin</link>.</para>
-
-  <warning><para>On Cygwin, Nix <emphasis>must</emphasis> be installed
-  on an NTFS partition.  It will not work correctly on a FAT
-  partition.</para></warning>
-
-  </listitem>
-
-</itemizedlist>
-
-</para>
-
-<para>Nix is pretty portable, so it should work on most other Unix
-platforms as well.</para>
-
-</section>
-
-
-<section><title>Obtaining Nix</title>
-
-<para>The easiest way to obtain Nix is to download a <link
-xlink:href="http://nixos.org/">source distribution</link>.  RPMs
-for Red Hat, SuSE, and Fedora Core are also available.</para>
+<para>The easiest way to obtain Nix is to download a <ulink
+url='http://www.cs.uu.nl/groups/ST/Trace/Nix'>source
+distribution</ulink>.  RPMs for Red Hat, SuSE, and Fedore Core are
+also available.</para>
 
 <para>Alternatively, the most recent sources of Nix can be obtained
-from its <link
-xlink:href="https://svn.nixos.org/repos/nix/nix/trunk">Subversion
-repository</link>.  For example, the following command will check out
-the latest revision into a directory called
-<filename>nix</filename>:</para>
+from its <ulink
+url='https://svn.cs.uu.nl:12443/repos/trace/nix/trunk'>Subversion
+repository</ulink>.  For example, the following command will check out
+the latest revision into a directory called <filename>nix</filename>:</para>
 
 <screen>
-$ svn checkout https://svn.nixos.org/repos/nix/nix/trunk nix</screen>
+$ svn checkout https://svn.cs.uu.nl:12443/repos/trace/nix/trunk nix</screen>
 
-<para>Likewise, specific releases can be obtained from the <link
-xlink:href="https://svn.nixos.org/repos/nix/nix/tags">tags
-directory</link> of the repository.</para>
+<para>Likewise, specific releases can be obtained from the <ulink
+url='https://svn.cs.uu.nl:12443/repos/trace/nix/tags'>tags
+directory</ulink> of the repository.  If you don't have Subversion,
+you can also download an automatically generated <ulink
+url='https://svn.cs.uu.nl:12443/dist/trace/'>compressed
+tar-file</ulink> of the head revision of the trunk.</para>
 
-</section>
+</sect1>
 
 
-<section><title>Prerequisites</title>
+<sect1><title>Prerequisites</title>
 
-<para><emphasis>The following prerequisites only apply when you build
-from source</emphasis>.  Binary releases (e.g., RPMs) have no
-prerequisites.</para>
+<para>The following prerequisites only apply when you build from
+source.  Binary releases (e.g., RPMs) have no prerequisites.</para>
 
 <para>A fairly recent version of GCC/G++ is required.  Version 2.95
 and higher should work.</para>
@@ -75,391 +39,157 @@ and higher should work.</para>
 <command>xmllint</command> and <command>xsltproc</command> programs,
 which are part of the <literal>libxml2</literal> and
 <literal>libxslt</literal> packages, respectively.  You also need the
-<link
-xlink:href="http://docbook.sourceforge.net/projects/xsl/">DocBook XSL
-stylesheets</link> and optionally the <link
-xlink:href="http://www.docbook.org/schemas/5x"> DocBook 5.0 RELAX NG
-schemas</link>.  Note that these are only required if you modify the
-manual sources or when you are building from the Subversion
+<ulink url='http://docbook.sourceforge.net/projects/xsl/'>DocBook XSL
+stylesheets</ulink> and optionally the <ulink
+url='http://www.oasis-open.org/docbook/xml/4.2/docbook-xml-4.2.zip'>
+DocBook XML 4.2 DTD</ulink>.  Note that these are only required if you
+modify the manual sources or when you are building from the Subversion
 repository.</para>
 
 <para>To build the parser, very <emphasis>recent</emphasis> versions
 of Bison and Flex are required.  (This is because Nix needs GLR
 support in Bison and reentrancy support in Flex.)  For Bison, you need
-version 2.3 or higher (1.875 does <emphasis>not</emphasis> work),
-which can be obtained from
-the <link xlink:href="ftp://alpha.gnu.org/pub/gnu/bison">GNU FTP
-server</link>.  For Flex, you need version 2.5.33, which is available
-on <link xlink:href="http://lex.sourceforge.net/">SourceForge</link>.
-Slightly older versions may also work, but ancient versions like the
-ubiquitous 2.5.4a won't.  Note that these are only required if you
-modify the parser or when you are building from the Subversion
-repository.</para>
+version 1.875c or higher (1.875 does <emphasis>not</emphasis> work),
+which can be obtained from the <ulink
+url='ftp://alpha.gnu.org/pub/gnu/bison'>GNU FTP server</ulink>.  For
+Flex, you need version 2.5.31, which is available on <ulink
+url='http://lex.sourceforge.net/'>SourceForge</ulink>.  Slightly older
+versions may also work, but ancient versions like the ubiquitous
+2.5.4a won't.  Note that these are only required if you modify the
+parser or when you are building from the Subversion repository.</para>
 
-<para>Nix uses the bzip2 compressor (including the bzip2 library).  It
-is included in the Nix source distribution.  If you build from the
-Subversion repository, you must download it yourself and place it in
-the <filename>externals/</filename> directory.  See
+<para>Nix uses Sleepycat's Berkeley DB and CWI's ATerm library.  These
+are included in the Nix source distribution.  If you build from the
+Subversion repository, you must download them yourself and place them
+in the <filename>externals/</filename> directory.  See
 <filename>externals/Makefile.am</filename> for the precise URLs of
-this packages.  Alternatively, if you already have it installed, you
-can use <command>configure</command>'s <option>--with-bzip2</option>
-options to point to their respective locations.</para>
+these packages.  Alternatively, if you already have them installed,
+you can use <command>configure</command>'s <option>--with-bdb</option>
+and <option>--with-aterm</option> options to point to their respective
+locations.  Note that Berkeley DB <emphasis>must</emphasis> be version
+4.2; other versions may not have compatible database formats.</para>
 
-<para>Nix can optionally use the <link
-xlink:href="http://www.hpl.hp.com/personal/Hans_Boehm/gc/">Boehm
-garbage collector</link> to reduce the evaluator’s memory consumption.
-To enable it, install <literal>pkgconfig</literal> and the Boehm
-garbage collector, and pass the flag <option>--enable-gc</option> to
-<command>configure</command>.</para>
-
-</section>
+</sect1>
 
 
-<section><title>Building Nix from source</title>
+<sect1><title>Building Nix from source</title>
 
 <para>After unpacking or checking out the Nix sources, issue the
 following commands:
+    </para>
 
 <screen>
 $ ./configure <replaceable>options...</replaceable>
 $ make
 $ make install</screen>
 
-</para>
-
 <para>When building from the Subversion repository, these should be
 preceded by the command:
+    </para>
 
 <screen>
-$ ./bootstrap.sh</screen>
-
-</para>
+$ autoreconf -i</screen>
 
 <para>The installation path can be specified by passing the
 <option>--prefix=<replaceable>prefix</replaceable></option> to
 <command>configure</command>.  The default installation directory is
-<filename>/usr/local</filename>.  You can change this to any location
-you like.  You must have write permission to the
+<filename>/nix</filename>.  You can change this to any location you
+like.  You must have write permission to the
 <replaceable>prefix</replaceable> path.</para>
 
-<para>Nix keeps its <emphasis>store</emphasis> (the place where
-packages are stored) in <filename>/nix/store</filename> by default.
-This can be changed using
-<option>--with-store-dir=<replaceable>path</replaceable></option>.</para>
+<warning><para>It is advisable <emphasis>not</emphasis> to change the
+installation prefix from its default, since doing so will in all
+likelihood make it impossible to use derivations built on other
+systems.</para></warning>
 
-<warning><para>It is best <emphasis>not</emphasis> to change the Nix
-store from its default, since doing so makes it impossible to use
-pre-built binaries from the standard Nixpkgs channels — that is, all
-packages will need to be built from source.</para></warning>
-
-<para>Nix keeps state (such as its database and log files) in
-<filename>/nix/var</filename> by default.  This can be changed using
-<option>--localstatedir=<replaceable>path</replaceable></option>.</para>
-
-<para>If you want to rebuild the documentation, pass the full path to
-the DocBook RELAX NG schemas and to the DocBook XSL stylesheets using
-the
-<option>--with-docbook-rng=<replaceable>path</replaceable></option>
+<para>If you want to rebuilt the documentation, pass the full path to
+the DocBook XML catalog file (<filename>docbook.cat</filename>) and to
+the DocBook XSL stylesheets using the
+<option>--with-docbook-catalog=<replaceable>path</replaceable></option>
 and
 <option>--with-docbook-xsl=<replaceable>path</replaceable></option>
 options.</para>
 
-</section>
+</sect1>
 
 
-<section><title>Installing a binary distribution</title>
+<sect1><title>Installing from RPMs</title>
 
-<para>RPM and Deb packages of Nix for a number of different versions
-of Fedora, openSUSE, Debian and Ubuntu can be downloaded from <link
-xlink:href="http://nixos.org/" />.  Once downloaded, the RPMs can be
-installed or upgraded using <command>rpm -U</command>.  For example,
+<para>RPM packages of Nix can be downloaded from <ulink
+url='http://www.cs.uu.nl/groups/ST/Trace/Nix' />.  These RPMs should
+work for most fairly recent releases of SuSE and Red Hat Linux.  They
+have been known to work work on SuSE Linux 8.1 and 9.0, and Red Hat
+9.0.  In fact, it should work on any RPM-based Linux distribution
+based on <literal>glibc</literal> 2.3 or later.</para>
+
+<para>Once downloaded, the RPMs can be installed or upgraded using
+<command>rpm -U</command>.  For example,</para>
 
 <screen>
-$ rpm -U nix-0.13pre18104-1.i386.rpm</screen>
+$ rpm -U nix-0.5pre664-1.i386.rpm</screen>
 
-Likewise, for a Deb package:
-
-<screen>
-$ dpkg -i nix_0.13pre18104-1_amd64.deb</screen>
-
-</para>
-
-<para>Nix can be uninstalled using <command>rpm -e nix</command> or
-<command>dpkg -r nix</command>.  After this you should manually remove
-the Nix store and other auxiliary data, if desired:
+<para>The RPMs install into the directory <filename>/nix</filename>.
+Nix can be uninstalled using <command>rpm -e nix</command>.  After
+this it will be necessary to manually remove the Nix store and other
+auxiliary data:</para>
 
 <screen>
 $ rm -rf /nix/store
 $ rm -rf /nix/var</screen>
 
-</para>
-
-</section>
+</sect1>
 
 
-<!-- TODO: should be updated
-<section><title>Upgrading Nix through Nix</title>
+<sect1><title>Permissions</title>
 
-<para>You can install the latest stable version of Nix through Nix
-itself by subscribing to the channel <link
-xlink:href="http://nixos.org/releases/nix/channels/nix-stable" />,
-or the latest unstable version by subscribing to the channel <link
-xlink:href="http://nixos.org/releases/nix/channels/nix-unstable" />.
-You can also do a <link linkend="sec-one-click">one-click
-installation</link> by clicking on the package links at <link
-xlink:href="http://nixos.org/releases/full-index-nix.html" />.</para>
+<para>All Nix operations must be performed under the user ID that owns
+the Nix store and database
+(<filename><replaceable>prefix</replaceable>/store</filename> and
+<filename><replaceable>prefix</replaceable>/var/nix/db</filename>,
+respectively).  When installed from the RPM packages, these
+directories are owned by <systemitem
+class='username'>root</systemitem>.</para>
 
-</section>
--->
+<sect2><title>Setuid installation</title>
 
+<para>As a somewhat <emphasis>ad hoc</emphasis> hack, you can also
+install the Nix binaries <quote>setuid</quote> so that a Nix store can
+be shared among several users.  To do this, configure Nix with the
+<emphasis>--enable-setuid</emphasis> option.  Nix will be installed as
+owned by a user and group specified by the
+<option>--with-nix-user=<parameter>user</parameter></option> and
+<option>--with-nix-group=<parameter>group</parameter></option>
+options.  E.g.,
 
-<section><title>Security</title>
+<screen>
+$ ./configure --enable-setuid --with-nix-user=my_nix_user --with-nix-group=my_nix_group</screen>
 
-<para>Nix has two basic security models.  First, it can be used in
-“single-user mode”, which is similar to what most other package
-management tools do: there is a single user (typically <systemitem
-class="username">root</systemitem>) who performs all package
-management operations.  All other users can then use the installed
-packages, but they cannot perform package management operations
-themselves.</para>
-
-<para>Alternatively, you can configure Nix in “multi-user mode”.  In
-this model, all users can perform package management operations — for
-instance, every user can install software without requiring root
-privileges.  Nix ensures that this is secure.  For instance, it’s not
-possible for one user to overwrite a package used by another user with
-a Trojan horse.</para>
-
-
-<section><title>Single-user mode</title>
-  
-<para>In single-user mode, all Nix operations that access the database
-in <filename><replaceable>prefix</replaceable>/var/nix/db</filename>
-or modify the Nix store in
-<filename><replaceable>prefix</replaceable>/store</filename> must be
-performed under the user ID that owns those directories.  This is
-typically <systemitem class="username">root</systemitem>.  (If you
-install from RPM packages, that’s in fact the default ownership.)
-However, on single-user machines, it is often convenient to
-<command>chown</command> those directories to your normal user account
-so that you don’t have to <command>su</command> to <systemitem
-class="username">root</systemitem> all the time.</para>
-
-</section>
-
-
-<section xml:id="ssec-multi-user"><title>Multi-user mode</title>
-
-<para>To allow a Nix store to be shared safely among multiple users,
-it is important that users are not able to run builders that modify
-the Nix store or database in arbitrary ways, or that interfere with
-builds started by other users.  If they could do so, they could
-install a Trojan horse in some package and compromise the accounts of
-other users.</para>
-
-<para>To prevent this, the Nix store and database are owned by some
-privileged user (usually <literal>root</literal>) and builders are
-executed under special user accounts (usually named
-<literal>nixbld1</literal>, <literal>nixbld2</literal>, etc.).  When a
-unprivileged user runs a Nix command, actions that operate on the Nix
-store (such as builds) are forwarded to a <emphasis>Nix
-daemon</emphasis> running under the owner of the Nix store/database
-that performs the operation.</para>
-
-<note><para>Multi-user mode has one important limitation: only
-<systemitem class="username">root</systemitem> can run <command
-linkend="sec-nix-pull">nix-pull</command> to register the availability
-of pre-built binaries.  However, those registrations are shared by all
-users, so they still get the benefit from <command>nix-pull</command>s
-done by <systemitem class="username">root</systemitem>.</para></note>
-
-
-<section><title>Setting up the build users</title>
-
-<para>The <emphasis>build users</emphasis> are the special UIDs under
-which builds are performed.  They should all be members of the
-<emphasis>build users group</emphasis> (usually called
-<literal>nixbld</literal>).  This group should have no other members.
-The build users should not be members of any other group.</para>
-
-<para>Here is a typical <filename>/etc/group</filename> definition of
-the build users group with 10 build users:
-
-<programlisting>
-nixbld:!:30000:nixbld1,nixbld2,nixbld3,nixbld4,nixbld5,nixbld6,nixbld7,nixbld8,nixbld9,nixbld10
-</programlisting>
-
-In this example the <literal>nixbld</literal> group has UID 30000, but
-of course it can be anything that doesn’t collide with an existing
+The user and group default to <literal>nix</literal>.  You should make
+sure that both the user and the group exist.  Any <quote>real</quote>
+users that you want to allow access should be added to the Nix
 group.</para>
 
-<para>Here is the corresponding part of
-<filename>/etc/passwd</filename>:
+<warning><para>A setuid installation should only by used if the users
+in the Nix group are mutually trusted, since any user in that group
+has the ability to change anything in the Nix store or database.  For
+instance, they could install a trojan horse in executables used by
+other users.</para></warning>
 
-<programlisting>
-nixbld1:x:30001:65534:Nix build user 1:/var/empty:/noshell
-nixbld2:x:30002:65534:Nix build user 2:/var/empty:/noshell
-nixbld3:x:30003:65534:Nix build user 3:/var/empty:/noshell
-...
-nixbld10:x:30010:65534:Nix build user 10:/var/empty:/noshell
-</programlisting>
+<warning><para>On some platforms, the Nix binaries will be installed
+as setuid <literal>root</literal>.  They drop root privileges
+immediately after startup and switch to the Nix user.  The reason for
+this is that both the real and effective user must be set to the Nix
+user, and POSIX has no system call to do this.  This is not the case
+on systems that have the <function>setresuid()</function> system call
+(such as Linux and FreeBSD), so on those systems the binaries are
+simply owned by the Nix user.</para></warning>
 
-The home directory of the build users should not exist or should be an
-empty directory to which they do not have write access.</para>
+</sect2>
 
-<para>The build users should have write access to the Nix store, but
-they should not have the right to delete files.  Thus the Nix store’s
-group should be the build users group, and it should have the sticky
-bit turned on (like <filename>/tmp</filename>):
-
-<screen>
-$ chgrp nixbld /nix/store
-$ chmod 1777 /nix/store
-</screen>
-
-</para>
-
-<para>Finally, you should tell Nix to use the build users by
-specifying the build users group in the <link
-linkend="conf-build-users-group"><literal>build-users-group</literal>
-option</link> in the <link linkend="sec-conf-file">Nix configuration
-file</link> (<literal>/nix/etc/nix/nix.conf</literal>):
-
-<programlisting>
-build-users-group = nixbld
-</programlisting>
-
-</para>
-
-</section>
+</sect1>
 
 
-<section><title>Nix store/database owned by root</title>
-
-<para>The simplest setup is to let <literal>root</literal> own the Nix
-store and database.  I.e.,
-
-<screen>
-$ chown -R root /nix/store /nix/var/nix</screen>
-
-</para>
-
-<para>The <link linkend="sec-nix-worker">Nix daemon</link> should be
-started as follows (as <literal>root</literal>):
-
-<screen>
-$ nix-worker --daemon</screen>
-
-You’ll want to put that line somewhere in your system’s boot
-scripts.</para>
-
-<para>To let unprivileged users use the daemon, they should set the
-<link linkend="envar-remote"><envar>NIX_REMOTE</envar> environment
-variable</link> to <literal>daemon</literal>.  So you should put a
-line like
-
-<programlisting>
-export NIX_REMOTE=daemon</programlisting>
-
-into the users’ login scripts.</para>
-
-</section>
-
-
-<section><title>Nix store/database not owned by root</title>
-
-<para>It is also possible to let the Nix store and database be owned
-by a non-root user, which should be more secure<footnote><para>Note
-however that even when the Nix daemon runs as root, not
-<emphasis>that</emphasis> much code is executed as root: Nix
-expression evaluation is performed by the calling (unprivileged) user,
-and builds are performed under the special build user accounts.  So
-only the code that accesses the database and starts builds is executed
-as <literal>root</literal>.</para></footnote>.  Typically, this user
-is a special account called <literal>nix</literal>, but it can be
-named anything.  It should own the Nix store and database:
-
-<screen>
-$ chown -R root /nix/store /nix/var/nix</screen>
-
-and of course <command>nix-worker --daemon</command> should be started
-under that user, e.g.,
-
-<screen>
-$ su - nix -c "exec /nix/bin/nix-worker --daemon"</screen>
-
-</para>
-
-<para>There is a catch, though: non-<literal>root</literal> users
-cannot start builds under the build user accounts, since the
-<function>setuid</function> system call is obviously privileged.  To
-allow a non-<literal>root</literal> Nix daemon to use the build user
-feature, it calls a setuid-root helper program,
-<command>nix-setuid-helper</command>.  This program is installed in
-<filename><replaceable>prefix</replaceable>/libexec/nix-setuid-helper</filename>.
-To set the permissions properly (Nix’s <command>make install</command>
-doesn’t do this, since we don’t want to ship setuid-root programs
-out-of-the-box):
-
-<screen>
-$ chown root.root /nix/libexec/nix-setuid-helper
-$ chmod 4755 /nix/libexec/nix-setuid-helper
-</screen>
-
-(This example assumes that the Nix binaries are installed in
-<filename>/nix</filename>.)</para>
-
-<para>Of course, the <command>nix-setuid-helper</command> command
-should not be usable by just anybody, since then anybody could run
-commands under the Nix build user accounts.  For that reason there is
-a configuration file <filename>/etc/nix-setuid.conf</filename> that
-restricts the use of the helper.  This file should be a text file
-containing precisely two lines, the first being the Nix daemon user
-and the second being the build users group, e.g.,
-
-<programlisting>
-nix
-nixbld
-</programlisting>
-
-The setuid-helper barfs if it is called by a user other than the one
-specified on the first line, or if it is asked to execute a build
-under a user who is not a member of the group specified on the second
-line.  The file <filename>/etc/nix-setuid.conf</filename> must be
-owned by root, and must not be group- or world-writable.  The
-setuid-helper barfs if this is not the case.</para>
-
-</section>
-
-
-<section><title>Restricting access</title>
-
-<para>To limit which users can perform Nix operations, you can use the
-permissions on the directory
-<filename>/nix/var/nix/daemon-socket</filename>.  For instance, if you
-want to restrict the use of Nix to the members of a group called
-<literal>nix-users</literal>, do
-
-<screen>
-$ chgrp nix-users /nix/var/nix/daemon-socket
-$ chmod ug=rwx,o= /nix/var/nix/daemon-socket
-</screen>
-
-This way, users who are not in the <literal>nix-users</literal> group
-cannot connect to the Unix domain socket
-<filename>/nix/var/nix/daemon-socket/socket</filename>, so they cannot
-perform Nix operations.</para>
-
-</section>
-
-
-</section> <!-- end of multi-user -->
-
-
-</section> <!-- end of security -->
-
-
-<section><title>Using Nix</title>
+<sect1><title>Using Nix</title>
 
 <para>To use Nix, some environment variables should be set.  In
 particular, <envar>PATH</envar> should contain the directories
@@ -476,7 +206,7 @@ in your <filename>~/.bashrc</filename> (or similar), like this:</para>
 <screen>
 source <replaceable>prefix</replaceable>/etc/profile.d/nix.sh</screen>
 
-</section>
+</sect1>
 
 
 </chapter>

doc/manual/introduction.xml

@@ -1,337 +1,150 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xml:id="chap-introduction">
-
-<title>Introduction</title>
-
-
-<section><title>About Nix</title>
-
-<para>Nix is a <emphasis>purely functional package manager</emphasis>.
-This means that it treats packages like values in purely functional
-programming languages such as Haskell — they are built by functions
-that don’t have side-effects, and they never change after they have
-been built.  Nix stores packages in the <emphasis>Nix
-store</emphasis>, usually the directory
-<filename>/nix/store</filename>, where each package has its own unique
-subdirectory such as
-
-<programlisting>
-/nix/store/r8vvq9kq18pz08v249h8my6r9vs7s0n3-firefox-2.0.0.1/
-</programlisting>
-
-where <literal>r8vvq9kq…</literal> is a unique identifier for the
-package that captures all its dependencies (it’s a cryptographic hash
-of the package’s build dependency graph).  This enables many powerful
-features.</para>
-
-
-<simplesect><title>Multiple versions</title>
-
-<para>You can have multiple versions or variants of a package
-installed at the same time.  This is especially important when
-different applications have dependencies on different versions of the
-same package — it prevents the “DLL hell”.  Because of the hashing
-scheme, different versions of a package end up in different paths in
-the Nix store, so they don’t interfere with each other.</para>
-
-<para>An important consequence is that operations like upgrading or
-uninstalling an application cannot break other applications, since
-these operations never “destructively” update or delete files that are
-used by other packages.</para>
-
-</simplesect>
-
-
-<simplesect><title>Complete dependencies</title>
-
-<para>Nix helps you make sure that package dependency specifications
-are complete.  In general, when you’re making a package for a package
-management system like RPM, you have to specify for each package what
-its dependencies are, but there are no guarantees that this
-specification is complete.  If you forget a dependency, then the
-package will build and work correctly on <emphasis>your</emphasis>
-machine if you have the dependency installed, but not on the end
-user's machine if it's not there.</para>
-
-<para>Since Nix on the other hand doesn’t install packages in “global”
-locations like <filename>/usr/bin</filename> but in package-specific
-directories, the risk of incomplete dependencies is greatly reduced.
-This is because tools such as compilers don’t search in per-packages
-directories such as
-<filename>/nix/store/5lbfaxb722zp…-openssl-0.9.8d/include</filename>,
-so if a package builds correctly on your system, this is because you
-specified the dependency explicitly.</para>
-
-<para>Runtime dependencies are found by scanning binaries for the hash
-parts of Nix store paths (such as <literal>r8vvq9kq…</literal>).  This
-sounds risky, but it works extremely well.</para>
-
-</simplesect>
-
-
-<simplesect><title>Multi-user support</title>
-
-<para>Starting at version 0.11, Nix has multi-user support.  This
-means that non-privileged users can securely install software.  Each
-user can have a different <emphasis>profile</emphasis>, a set of
-packages in the Nix store that appear in the user’s
-<envar>PATH</envar>.  If a user installs a package that another user
-has already installed previously, the package won’t be built or
-downloaded a second time.  At the same time, it is not possible for
-one user to inject a Trojan horse into a package that might be used by
-another user.</para>
+<chapter><title>Introduction</title>
 
 <!--
-<para>More details can be found in Section 3 of our <a
-href="docs/papers.html#securesharing">ASE 2005 paper</a>.</para>
+<epigraph><para><quote>The number of Nix installations in the world
+has grown to 5, with more expected.</quote></para></epigraph>
 -->
 
-</simplesect>
+<para>Nix is a system for the deployment of software.  Software
+deployment is concerned with the creation, distribution, and
+management of software components (<quote>packages</quote>).  Its main
+features are:
 
+<itemizedlist>
 
-<simplesect><title>Atomic upgrades and rollbacks</title>
+<listitem><para>It helps you make sure that dependency specifications
+are complete.  In general in a deployment system you have to specify
+for each component what its dependencies are, but there are no
+guarantees that this specification is complete.  If you forget a
+dependency, then the component will build and work correctly on
+<emphasis>your</emphasis> machine if you have the dependency
+installed, but not on the end user's machine if it's not
+there.</para></listitem>
 
-<para>Since package management operations never overwrite packages in
-the Nix store but just add new versions in different paths, they are
-<emphasis>atomic</emphasis>.  So during a package upgrade, there is no
-time window in which the package has some files from the old version
-and some files from the new version — which would be bad because a
-program might well crash if it’s started during that period.</para>
+<listitem><para>It is possible to have <emphasis>multiple versions or
+variants</emphasis> of a component installed at the same time.  In
+contrast, in systems such as RPM different versions of the same
+package tend to install to the same location in the file system, so
+installing one version will remove the other.  This is especially
+important if you want to use applications that have conflicting
+requirements on different versions of a component (e.g., application A
+requires version 1.0 of library X, while application B requires a
+non-backwards compatible version 1.1).</para></listitem>
 
-<para>And since package aren’t overwritten, the old versions are still
-there after an upgrade.  This means that you can <emphasis>roll
-back</emphasis> to the old version:</para>
+<listitem><para>Users can have different <quote>views</quote>
+(<quote>profiles</quote> in Nix parlance) on the set of installed
+applications in a system.  For instance, one user can have version 1.0
+of some package visible, while another is using version 1.1, and a
+third doesn't use it at all.</para></listitem>
 
-<screen>
-$ nix-env --upgrade <replaceable>some-packages</replaceable>
-$ nix-env --rollback
-</screen>
+<listitem><para>It is possible to atomically
+<emphasis>upgrade</emphasis> software.  I.e., there is no time window
+during an upgrade in which part of the old version and part of the new
+version are simultaneously visible (which might well cause the
+component to fail).</para></listitem>
 
-</simplesect>
+<listitem><para>Likewise, it is possible to atomically roll back after
+an install, upgrade, or uninstall action.  That is, in a fast (O(1))
+operation the previous configuration of the system can be restored.
+This is because upgrade or uninstall actions don't actually remove
+components from the system.</para></listitem>
 
+<listitem><para>Unused components can be
+<emphasis>garbage-collected</emphasis> automatically and safely: when
+you remove an application from a profile, its dependencies will be
+deleted by the garbage collector only if there are no other active
+applications using them.</para></listitem>
 
-<simplesect><title>Garbage collection</title>
+<listitem><para>Nix supports both source-based deployment models
+(where you distribute <emphasis>Nix expressions</emphasis> that tell
+Nix how to build software from source) and binary-based deployment
+models.  The latter is more-or-less transparent: installation of
+components is always based on Nix expressions, but if the expressions
+have been built before and Nix knows that the resulting binaries are
+available somewhere, it will use those instead.</para></listitem>
 
-<para>When you uninstall a package like this…
+<listitem><para>Nix is flexible in the deployment policies that it
+supports.  There is a clear separation between the tools that
+implement basic Nix <emphasis>mechanisms</emphasis> (e.g., building
+Nix expressions), and the tools that implement various deployment
+<emphasis>policies</emphasis>.  For instance, there is a concept of
+<quote>Nix channels</quote> that can be used to keep software
+installations up-to-date automatically from a network source.  This is
+a policy that is implemented by a fairly short Perl script, which can
+be adapted easily to achieve similar policies.</para></listitem>
 
-<screen>
-$ nix-env --uninstall firefox
-</screen>
+<listitem><para>Nix component builds aim to be <quote>pure</quote>;
+that is, unaffected by anything other than the declared dependencies.
+This means that if a component was built successfully once, it can be
+rebuilt again on another machine and the result will be the same.  We
+cannot <emphasis>guarantee</emphasis> this (e.g., if the build depends
+on the time-of-day), but Nix (and the tools in the Nix Packages
+collection) takes special care to help achieve this.</para></listitem>
 
-the package isn’t deleted from the system right away (after all, you
-might want to do a rollback, or it might be in the profiles of other
-users).  Instead, unused packages can be deleted safely by running the
-<emphasis>garbage collector</emphasis>:
+<listitem><para>Nix expressions (the things that tell Nix how to build
+components) are self-contained: they describe not just components but
+complete compositions.  In other words, Nix expressions also describe
+how to build all the dependencies.  This is in contrast to component
+specification languages like RPM spec files, which might say that a
+component X depends on some other component Y, but since it does not
+describe <emphasis>exactly</emphasis> what Y is, the result of
+building or running X might be different on different machines.
+Combined with purity, self-containedness ensures that a component that
+<quote>works</quote> on one machine also works on another, when
+deployed using Nix.</para></listitem>
 
-<screen>
-$ nix-collect-garbage
-</screen>
+<listitem><para>The Nix expression language makes it easy to describe
+variability in components (e.g., optional features or
+dependencies).</para></listitem>
 
-This deletes all packages that aren’t in use by any user profile or by
-a currently running program.</para>
+<listitem><para>Nix is ideal for building build farms that do
+continuous builds of software from a version management system, since
+it can take care of building all the dependencies as well.  Also, Nix
+only rebuilds components that have changed, so there are no
+unnecessary builds.  In addition, Nix can transparently distribute
+build jobs over different machines, including different
+platforms.</para></listitem>
 
-</simplesect>
+<listitem><para>Nix can be used not only for software deployment, but
+also for <emphasis>service deployment</emphasis>, such as the
+deployment of a complete web server with all its configuration files,
+static pages, software dependencies, and so on.  Nix's advantages for
+software deployment also apply here: for instance, the ability
+trivially to have multiple configurations at the same time, or the
+ability to do rollbacks.</para></listitem>
 
+<listitem><para>Nix can efficiently upgrade between different versions
+of a component through <emphasis>binary patching</emphasis>.  If
+patches are available on a server, and you try to install a new
+version of some component, Nix will automatically apply a patch (or
+sequence of patches), if available, to transform the installed
+component into the new version.</para></listitem> 
 
-<simplesect><title>Functional package language</title>
+</itemizedlist>
 
-<para>Packages are built from <emphasis>Nix expressions</emphasis>,
-which is a simple functional language.  A Nix expression describes
-everything that goes into a package build action (a “derivation”):
-other packages, sources, the build script, environment variables for
-the build script, etc.  Nix tries very hard to ensure that Nix
-expressions are <emphasis>deterministic</emphasis>: building a Nix
-expression twice should yield the same result.</para>
-
-<para>Because it’s a functional language, it’s easy to support
-building variants of a package: turn the Nix expression into a
-function and call it any number of times with the appropriate
-arguments.  Due to the hashing scheme, variants don’t conflict with
-each other in the Nix store.</para>
-
-</simplesect>
-
-
-<simplesect><title>Transparent source/binary deployment</title>
-
-<para>Nix expressions generally describe how to build a package from
-source, so an installation action like
-
-<screen>
-$ nix-env --install firefox
-</screen>
-
-<emphasis>could</emphasis> cause quite a bit of build activity, as not
-only Firefox but also all its dependencies (all the way up to the C
-library and the compiler) would have to built, at least if they are
-not already in the Nix store.  This is a <emphasis>source deployment
-model</emphasis>.  For most users, building from source is not very
-pleasant as it takes far too long.  However, Nix can automatically
-skip building from source and download a pre-built binary instead if
-it knows about it.  <emphasis>Nix channels</emphasis> provide Nix
-expressions along with pre-built binaries.</para>
-
-<!--
-<para>source deployment model (like <a
-href="http://www.gentoo.org/">Gentoo</a>) and a binary model (like
-RPM)</para>
--->
-
-</simplesect>
-
-
-<simplesect><title>Binary patching</title>
-
-<para>In addition to downloading binaries automatically if they’re
-available, Nix can download binary deltas that patch an existing
-package in the Nix store into a new version.  This speeds up
-upgrades.</para>
-
-</simplesect>
-
-
-<simplesect><title>Nix Packages collection</title>
-
-<para>We provide a large set of Nix expressions containing hundreds of
-existing Unix packages, the <emphasis>Nix Packages
-collection</emphasis> (Nixpkgs).</para>
-
-</simplesect>
-
-
-<simplesect><title>Service deployment</title>
-
-<para>Nix can be used not only for rolling out packages, but also
-complete <emphasis>configurations</emphasis> of services.  This is
-done by treating all the static bits of a service (such as software
-packages, configuration files, control scripts, static web pages,
-etc.) as “packages” that can be built by Nix expressions.  As a
-result, all the features above apply to services as well: for
-instance, you can roll back a web server configuration if a
-configuration change turns out to be undesirable, you can easily have
-multiple instances of a service (e.g., a test and production server),
-and because the whole service is built in a purely functional way from
-a Nix expression, it is repeatable so you can easily reproduce the
-service on another machine.</para>
-
-<!--
-<para>You can read more about this in our <a
-href="docs/papers.html#servicecm">SCM-12 paper</a>.</para>
--->
-
-</simplesect>
-
-
-<simplesect><title>Portability</title>
-
-<para>Nix should run on most Unix systems, including Linux, FreeBSD and
-Mac OS X.  It is also supported on Windows using Cygwin.</para>
-
-</simplesect>
-
-
-<simplesect><title>NixOS</title>
-
-<para>NixOS is a Linux distribution based on Nix.  It uses Nix not
-just for package management but also to manage the system
-configuration (e.g., to build configuration files in
-<filename>/etc</filename>).  This means, among other things, that it’s
-possible to easily roll back the entire configuration of the system to
-an earlier state.  Also, users can install software without root
-privileges.  For more information and downloads, see the <link
-xlink:href="http://nixos.org/">NixOS homepage</link>.</para>
-
-</simplesect>
-
-
-<!-- other features:
-
-- build farms
-- reproducibility (Nix expressions allows whole configuration to be rebuilt)
-
--->
-
-</section>
-
-
-<section><title>About us</title>
-
-<para>Nix was originally developed at the <link
-xlink:href="http://www.cs.uu.nl/">Department of Information and
-Computing Sciences</link>, Utrecht University by the <link
-xlink:href="http://www.cs.uu.nl/wiki/Trace/WebHome">TraCE
-project</link> (2003-2008).  The project was funded by the Software
-Engineering Research Program <link
-xlink:href="http://www.jacquard.nl/">Jacquard</link> to improve the
-support for variability in software systems.  Further funding is now
-provided by the NIRICT LaQuSo Build Farm project.</para>
-
-</section>
-
-
-<section><title>About this manual</title>
+</para>
 
 <para>This manual tells you how to install and use Nix and how to
 write Nix expressions for software not already in the Nix Packages
 collection.  It also discusses some advanced topics, such as setting
-up a Nix-based build farm.</para>
+up a Nix-based build farm, and doing service deployment using
+Nix.</para>
 
-</section>
-
-
-<section><title>License</title>
-
-<para>Nix is free software; you can redistribute it and/or modify it
-under the terms of the <link
-xlink:href="http://www.gnu.org/licenses/lgpl.html">GNU Lesser General
-Public License</link> as published by the <link
-xlink:href="http://www.fsf.org/">Free Software Foundation</link>;
-either version 2.1 of the License, or (at your option) any later
-version.  Nix is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Lesser General Public License for more details.</para>
-
-</section>
-
-
-<section><title>More information</title>
-
-<para>Some background information on Nix can be found in a number of
-papers.  The ICSE 2004 paper <citetitle
-xlink:href='http://www.st.ewi.tudelft.nl/~dolstra/pubs/immdsd-icse2004-final.pdf'>Imposing
-a Memory Management Discipline on Software Deployment</citetitle>
-discusses the hashing mechanism used to ensure reliable dependency
-identification and non-interference between different versions and
-variants of packages.  The LISA 2004 paper <citetitle
-xlink:href='http://www.st.ewi.tudelft.nl/~dolstra/pubs/nspfssd-lisa2004-final.pdf'>Nix:
-A Safe and Policy-Free System for Software Deployment</citetitle>
-gives a more general discussion of Nix from a system-administration
-perspective.  The CBSE 2005 paper <citetitle
-xlink:href='http://www.st.ewi.tudelft.nl/~dolstra/pubs/eupfcdm-cbse2005-final.pdf'>Efficient
+<note><para>Some background information on Nix can be found in three
+papers.  The ICSE 2004 paper <ulink
+url='http://www.cs.uu.nl/~eelco/pubs/immdsd-icse2004-final.pdf'><citetitle>Imposing
+a Memory Management Discipline on Software
+Deployment</citetitle></ulink> discusses the hashing mechanism used to
+ensure reliable dependency identification and non-interference between
+different versions and variants of packages.  The LISA 2004 paper
+<ulink
+url='http://www.cs.uu.nl/~eelco/pubs/nspfssd-lisa2004-final.pdf'><citetitle>Nix:
+A Safe and Policy-Free System for Software
+Deployment</citetitle></ulink> gives a more general discussion of Nix
+from a system-administration perspective.  The CBSE 2005 paper <ulink
+url='http://www.cs.uu.nl/~eelco/pubs/eupfcdm-cbse2005-final.pdf'><citetitle>Efficient
 Upgrading in a Purely Functional Component Deployment Model
-</citetitle> is about transparent patch deployment in Nix.  The SCM-12
-paper <citetitle
-xlink:href='http://www.st.ewi.tudelft.nl/~dolstra/pubs/servicecm-scm12-final.pdf'>
-Service Configuration Management</citetitle> shows how services (e.g.,
-web servers) can be deployed and managed through Nix.  A short
-overview of NixOS is given in the HotOS XI paper <citetitle
-xlink:href="http://www.st.ewi.tudelft.nl/~dolstra/pubs/hotos-final.pdf">Purely
-Functional System Configuration Management</citetitle>.  The Nix
-homepage has <link
-xlink:href="http://nixos.org/docs/papers.html">an up-to-date list
-of Nix-related papers</link>.</para>
-
-<para>Nix is the subject of Eelco Dolstra’s PhD thesis <citetitle
-xlink:href="http://igitur-archive.library.uu.nl/dissertations/2006-0118-200031/index.htm">The
-Purely Functional Software Deployment Model</citetitle>, which
-contains most of the papers listed above.</para>
-
-<para>Nix has a homepage at <link
-xlink:href="http://nixos.org/"/>.</para>
-
-</section>
-
+</citetitle></ulink> is about transparent patch deployment in
+Nix.</para></note>
 
 </chapter>

doc/manual/manual.xml

@@ -1,86 +1,83 @@
-<book xmlns="http://docbook.org/ns/docbook"
-      xmlns:xi="http://www.w3.org/2001/XInclude">
+<?xml version="1.0"?>
+<!DOCTYPE book
+    PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+    "http://www.docbook.org/xml/4.3/docbook-xml-4.3.zip"
+[
+]>
 
-  <info>
-
-    <title>Nix User's Guide</title>
-
-    <subtitle>Draft (Version <xi:include href="version.txt"
-    parse="text" />)</subtitle>
+<book>
+  <title>Nix User's Guide</title>
 
+  <subtitle>Draft (Version <xi:include
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  href="version.txt" parse="text" />)</subtitle>
+  
+  <bookinfo>
     <author>
-      <personname>
-        <firstname>Eelco</firstname>
-        <surname>Dolstra</surname>
-      </personname>
-      <affiliation>
-        <orgname>Delft University of Technology</orgname>
-        <orgdiv>Department of Software Technology</orgdiv>
-      </affiliation>
-      <contrib>Author</contrib>
+      <firstname>Eelco</firstname>
+      <surname>Dolstra</surname>
     </author>
-
     <copyright>
       <year>2004</year>
       <year>2005</year>
-      <year>2006</year>
-      <year>2007</year>
-      <year>2008</year>
-      <year>2009</year>
-      <year>2010</year>
       <holder>Eelco Dolstra</holder>
     </copyright>
-
-    <date>August 2010</date>
-    
-  </info>
-
+  </bookinfo>
   
-  <xi:include href="introduction.xml" />
-  <xi:include href="quick-start.xml" />
-  <xi:include href="installation.xml" />
-  <xi:include href="package-management.xml" />
-  <xi:include href="writing-nix-expressions.xml" />
-  <xi:include href="build-farm.xml" />
-
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="introduction.xml" />
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="quick-start.xml" />
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="installation.xml" />
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="package-management.xml" />
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="writing-nix-expressions.xml" />
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="build-farm.xml" />
 
   <appendix>
     <title>Command Reference</title>
-    <xi:include href="opt-common.xml" />
-    <xi:include href="env-common.xml" />
-    <xi:include href="conf-file.xml" />
-    
-    <section>
-      <title>Main commands</title>
-      <xi:include href="nix-env.xml" />
-      <xi:include href="nix-instantiate.xml" />
-      <xi:include href="nix-store.xml" />
-    </section>
-    
-    <section>
-      <title>Utilities</title>
-      <xi:include href="nix-build.xml" />
-      <xi:include href="nix-channel.xml" />
-      <xi:include href="nix-collect-garbage.xml" />
-      <xi:include href="nix-copy-closure.xml" />
-      <xi:include href="nix-hash.xml" />
-      <xi:include href="nix-install-package.xml" />
-      <xi:include href="nix-prefetch-url.xml" />
-      <xi:include href="nix-pull.xml" />
-      <xi:include href="nix-push.xml" />
-      <xi:include href="nix-worker.xml" />
-    </section>
-
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-common.xml" />
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="env-common.xml" />
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="conf-file.xml" />
+    <sect1 id="sec-nix-env">
+      <title>nix-env</title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="nix-env.xml" />
+    </sect1>
+    <sect1 id="sec-nix-build">
+      <title>nix-build</title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="nix-build.xml" />
+    </sect1>
+    <sect1>
+      <title>nix-store</title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="nix-store.xml" />
+    </sect1>
+    <sect1 id="sec-nix-instantiate">
+      <title>nix-instantiate</title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="nix-instantiate.xml" />
+    </sect1>
+    <sect1>
+      <title>nix-collect-garbage</title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="nix-collect-garbage.xml" />
+    </sect1>
+    <sect1 id="sec-nix-channel">
+      <title>nix-channel</title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="nix-channel.xml" />
+    </sect1>
+    <sect1>
+      <title>nix-push</title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="nix-push.xml" />
+    </sect1>
+    <sect1>
+      <title>nix-pull</title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="nix-pull.xml" />
+    </sect1>
+    <sect1>
+      <title>nix-prefetch-url</title>
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="nix-prefetch-url.xml" />
+    </sect1>
   </appendix>
 
-  <xi:include href="troubleshooting.xml" />
-  <!-- <xi:include href="bugs.xml" /> -->
-  <xi:include href="glossary.xml" />
+  <!--  &nix-lang-ref; -->
+
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="troubleshooting.xml" />
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="bugs.xml" />
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="glossary.xml" />
 
-  <appendix>
-    <title>Nix Release Notes</title>
-    <xi:include href="release-notes.xml"
-                xpointer="xmlns(x=http://docbook.org/ns/docbook)xpointer(x:article/x:section)" />
-  </appendix>
-    
 </book>

doc/manual/nix-build.xml

@@ -1,15 +1,5 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-build">
-
-<refmeta>
-  <refentrytitle>nix-build</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
+<refentry>
+  
 <refnamediv>
   <refname>nix-build</refname>
   <refpurpose>build a Nix expression</refpurpose>
@@ -18,26 +8,8 @@
 <refsynopsisdiv>
   <cmdsynopsis>
     <command>nix-build</command>
-    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-common-syn.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(/db:nop/*)" />
-    <arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
-    <arg><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
-    <arg>
-      <group choice='req'>
-        <arg choice='plain'><option>--attr</option></arg>
-        <arg choice='plain'><option>-A</option></arg>
-      </group>
-      <replaceable>attrPath</replaceable>
-    </arg>
     <arg><option>--add-drv-link</option></arg>
-    <arg><option>--drv-link </option><replaceable>drvlink</replaceable></arg>
-    <arg><option>--no-out-link</option></arg>
-    <arg>
-      <group choice='req'>
-        <arg choice='plain'><option>--out-link</option></arg>
-        <arg choice='plain'><option>-o</option></arg>
-      </group>
-      <replaceable>outlink</replaceable>
-    </arg>
+    <arg><option>--no-link</option></arg>
     <arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
   </cmdsynopsis>
 </refsynopsisdiv>
@@ -53,17 +25,14 @@ to multiple derivations, multiple sequentially numbered symlinks are
 created (<filename>result</filename>, <filename>result-2</filename>,
 and so on).</para>
 
-<para>If no <replaceable>paths</replaceable> are specified, then
-<command>nix-build</command> will use <filename>default.nix</filename>
-in the current directory, if it exists.</para>
-
-<para><command>nix-build</command> is essentially a wrapper around
-<link
+<note><para><command>nix-build</command> is essentially a wrapper
+around <link
 linkend="sec-nix-instantiate"><command>nix-instantiate</command></link>
 (to translate a high-level Nix expression to a low-level store
 derivation) and <link
 linkend="rsec-nix-store-realise"><command>nix-store
---realise</command></link> (to build the store derivation).</para>
+--realise</command></link> (to build the store
+derivation).</para></note>
 
 <warning><para>The result of the build is automatically registered as
 a root of the Nix garbage collector.  This root disappears
@@ -75,12 +44,6 @@ or renamed.  So don’t rename the symlink.</para></warning>
 
 <refsection><title>Options</title>
 
-<para>See also <xref linkend="sec-common-options" />.  All options not
-listed here are passed to <command>nix-store --realise</command>,
-except for <option>--arg</option> and <option>--attr</option> /
-<option>-A</option> which are passed to
-<command>nix-instantiate</command>.</para>
-
 <variablelist>
 
   <varlistentry><term><option>--add-drv-link</option></term>
@@ -94,16 +57,7 @@ except for <option>--arg</option> and <option>--attr</option> /
     
   </varlistentry>
 
-  <varlistentry><term><option>--drv-link</option> <replaceable>drvlink</replaceable></term>
-  
-    <listitem><para>Change the name of the symlink to the derivation
-    created when <option>--add-drv-link</option> is used from
-    <filename>derivation</filename> to
-    <replaceable>drvlink</replaceable>.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--no-out-link</option></term>
+  <varlistentry><term><option>--no-link</option></term>
   
     <listitem><para>Do not create a symlink to the output path.  Note
     that as a result the output does not become a root of the garbage
@@ -112,35 +66,9 @@ except for <option>--arg</option> and <option>--attr</option> /
 
   </varlistentry>
 
-  <varlistentry xml:id='opt-out-link'><term><option>--out-link</option> /
-  <option>-o</option> <replaceable>outlink</replaceable></term>
-  
-    <listitem><para>Change the name of the symlink to the output path
-    created unless <option>--no-out-link</option> is used from
-    <filename>result</filename> to
-    <replaceable>outlink</replaceable>.</para></listitem>
-
-  </varlistentry>
-
 </variablelist>
 
 </refsection>
 
 
-<refsection><title>Examples</title>
-
-<screen>
-$ nix-build pkgs/top-level/all-packages.nix -A firefox
-store derivation is /nix/store/qybprl8sz2lc...-firefox-1.5.0.7.drv
-/nix/store/d18hyl92g30l...-firefox-1.5.0.7
-
-$ ls -l result
-lrwxrwxrwx  <replaceable>...</replaceable>  result -> /nix/store/d18hyl92g30l...-firefox-1.5.0.7
-
-$ ls ./result/bin/
-firefox  firefox-config</screen>
-
-</refsection>
-
-
 </refentry>

doc/manual/nix-channel.xml

@@ -1,15 +1,5 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-channel">
+<refentry>
   
-<refmeta>
-  <refentrytitle>nix-channel</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
 <refnamediv>
   <refname>nix-channel</refname>
   <refpurpose>manage Nix channels</refpurpose>
@@ -63,11 +53,11 @@ also <xref linkend="sec-channels" />.</para>
   <varlistentry><term><option>--update</option></term>
 
     <listitem><para>Downloads the Nix expressions of all subscribed
-    channels, makes them the default for <command>nix-env</command>
-    operations (by symlinking them in the directory
-    <filename>~/.nix-defexpr</filename>), and performs a
-    <command>nix-pull</command> on the manifests of all channels to
-    make pre-built binaries available.</para></listitem>
+    channels, makes the conjunction of these the default for
+    <command>nix-env</command> operations (by calling <command>nix-env
+    -I</command>), and performs a <command>nix-pull</command> on the
+    manifests of all channels to make pre-built binaries
+    available.</para></listitem>
 
   </varlistentry>
 

doc/manual/nix-collect-garbage.xml

@@ -1,15 +1,5 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-collect-garbage">
+<refentry>
   
-<refmeta>
-  <refentrytitle>nix-collect-garbage</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
 <refnamediv>
   <refname>nix-collect-garbage</refname>
   <refpurpose>delete unreachable store paths</refpurpose>
@@ -18,8 +8,6 @@
 <refsynopsisdiv>
   <cmdsynopsis>
     <command>nix-collect-garbage</command>
-    <arg><option>--delete-old</option></arg>
-    <arg><option>-d</option></arg>
     <group choice='opt'>
       <arg choice='plain'><option>--print-roots</option></arg>
       <arg choice='plain'><option>--print-live</option></arg>
@@ -31,28 +19,10 @@
 
 <refsection><title>Description</title>
 
-<para>The command <command>nix-collect-garbage</command> is mostly an
-alias of <link linkend="rsec-nix-store-gc"><command>nix-store
---gc</command></link>, that is, it deletes all unreachable paths in
-the Nix store to clean up your system.  However, it provides an
-additional option <option>-d</option> (<option>--delete-old</option>)
-that deletes all old generations of all profiles in
-<filename>/nix/var/nix/profiles</filename> by invoking
-<literal>nix-env --delete-generations old</literal> on all profiles.
-Of course, this makes rollbacks to previous configurations
-impossible.</para>
-
-</refsection>
-
-<refsection><title>Example</title>
-
-<para>To delete from the Nix store everything that is not used by the
-current generations of each profile, do
-
-<screen>
-$ nix-collect-garbage -d</screen>
-
-</para>
+<para>The command <command>nix-collect-garbage</command> is an
+obsolete wrapper around <link
+linkend="rsec-nix-store-gc"><command>nix-store
+--gc</command></link>.</para>
 
 </refsection>
 

doc/manual/nix-copy-closure.xml

@@ -1,152 +0,0 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-copy-closure">
-
-<refmeta>
-  <refentrytitle>nix-copy-closure</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
-<refnamediv>
-  <refname>nix-copy-closure</refname>
-  <refpurpose>copy a closure to or from a remote machine via SSH</refpurpose>
-</refnamediv>
-
-<refsynopsisdiv>
-  <cmdsynopsis>
-    <command>nix-copy-closure</command>
-    <group>
-      <arg choice='plain'><option>--to</option></arg>
-      <arg choice='plain'><option>--from</option></arg>
-    </group>
-    <arg><option>--sign</option></arg>
-    <arg><option>--gzip</option></arg>
-    <arg choice='plain'>
-      <arg><replaceable>user@</replaceable></arg><replaceable>machine</replaceable>
-    </arg>
-    <arg choice='plain'><replaceable>paths</replaceable></arg>
-  </cmdsynopsis>
-</refsynopsisdiv>
-
-
-<refsection><title>Description</title>
-
-<para><command>nix-copy-closure</command> gives you an easy and
-efficient way to exchange software between machines.  Given one or
-more Nix store paths <replaceable>paths</replaceable> on the local
-machine, <command>nix-copy-closure</command> computes the closure of
-those paths (i.e. all their dependencies in the Nix store), and copies
-all paths in the closure to the remote machine via the
-<command>ssh</command> (Secure Shell) command.  With the
-<option>--from</option>, the direction is reversed:
-the closure of <replaceable>paths</replaceable> on a remote machine is
-copied to the Nix store on the local machine.</para>
-
-<para>This command is efficient because it only sends the store paths
-that are missing on the target machine.</para>
-
-<para>Since <command>nix-copy-closure</command> calls
-<command>ssh</command>, you may be asked to type in the appropriate
-password or passphrase.  In fact, you may be asked
-<emphasis>twice</emphasis> because <command>nix-copy-closure</command>
-currently connects twice to the remote machine, first to get the set
-of paths missing on the target machine, and second to send the dump of
-those paths.  If this bothers you, use
-<command>ssh-agent</command>.</para>
-
-
-<refsection><title>Options</title>
-
-<variablelist>
-  
-  <varlistentry><term><option>--to</option></term>
-
-    <listitem><para>Copy the closure of
-    <replaceable>paths</replaceable> from the local Nix store to the
-    Nix store on <replaceable>machine</replaceable>.  This is the
-    default.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--from</option></term>
-
-    <listitem><para>Copy the closure of
-    <replaceable>paths</replaceable> from the Nix store on
-    <replaceable>machine</replaceable> to the local Nix
-    store.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--sign</option></term>
-
-    <listitem><para>Let the sending machine cryptographically sign the
-    dump of each path with the key in
-    <filename>/nix/etc/nix/signing-key.sec</filename>.  If the user on
-    the target machine does not have direct access to the Nix store
-    (i.e., if the target machine has a multi-user Nix installation),
-    then the target machine will check the dump against
-    <filename>/nix/etc/nix/signing-key.pub</filename> before unpacking
-    it in its Nix store.  This allows secure sharing of store paths
-    between untrusted users on two machines, provided that there is a
-    trust relation between the Nix installations on both machines
-    (namely, they have matching public/secret keys).</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--gzip</option></term>
-
-    <listitem><para>Compress the dump of each path with
-    <command>gzip</command> before sending it.</para></listitem>
-
-  </varlistentry>
-
-</variablelist>
-
-</refsection>
-
-
-<refsection><title>Environment variables</title>
-
-<variablelist>
-
-  <varlistentry><term><envar>NIX_SSHOPTS</envar></term>
-
-    <listitem><para>Additional options to be passed to
-    <command>ssh</command> on the command line.</para></listitem>
-
-  </varlistentry>
-  
-</variablelist>
-
-</refsection>
-
-
-<refsection><title>Examples</title>
-
-<para>Copy Firefox with all its dependencies to a remote machine:
-
-<screen>
-$ nix-copy-closure --to alice@itchy.labs $(type -tP firefox)</screen>
-
-</para>
-
-<para>Copy Subversion from a remote machine and then install it into a
-user environment:
-
-<screen>
-$ nix-copy-closure --from alice@itchy.labs \
-    /nix/store/0dj0503hjxy5mbwlafv1rsbdiyx1gkdy-subversion-1.4.4
-$ nix-env -i /nix/store/0dj0503hjxy5mbwlafv1rsbdiyx1gkdy-subversion-1.4.4
-</screen>
-
-</para>
-
-</refsection>
-
-
-</refsection>
-
-</refentry>

doc/manual/nix-env.xml

@@ -1,15 +1,5 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-env">
+<refentry>
   
-<refmeta>
-  <refentrytitle>nix-env</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
 <refnamediv>
   <refname>nix-env</refname>
   <refpurpose>manipulate or query Nix user environments</refpurpose>
@@ -18,9 +8,7 @@
 <refsynopsisdiv>
   <cmdsynopsis>
     <command>nix-env</command>
-    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-common-syn.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(/db:nop/*)" />
-    <arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
-    <arg><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-common-syn.xml#xpointer(/nop/*)" />
     <arg>
       <group choice='req'>
         <arg choice='plain'><option>--file</option></arg>
@@ -35,11 +23,15 @@
       </group>
       <replaceable>path</replaceable>
     </arg>
+    <arg><option>--preserve-installed</option></arg>
     <arg>
       <arg choice='plain'><option>--system-filter</option></arg>
       <replaceable>system</replaceable>
     </arg>
     <arg><option>--dry-run</option></arg>
+    <arg><option>--from-expression</option></arg>
+    <arg><option>-E</option></arg>
+    <arg><option>--from-profile</option> <replaceable>path</replaceable></arg>
     <arg choice='plain'><replaceable>operation</replaceable></arg>
     <arg rep='repeat'><replaceable>options</replaceable></arg>
     <arg rep='repeat'><replaceable>arguments</replaceable></arg>
@@ -50,7 +42,7 @@
 <refsection><title>Description</title>
 
 <para>The command <command>nix-env</command> is used to manipulate Nix
-user environments.  User environments are sets of software packages
+user environments.  User environments are sets of software components
 available to a user at some point in time.  In other words, they are a
 synthesised view of the programs available in the Nix store.  There
 may be many user environments: different users can have different
@@ -109,13 +101,21 @@ linkend="sec-common-options" />.</para>
     <option>--rollback</option> operations, this flag will cause
     <command>nix-env</command> to print what
     <emphasis>would</emphasis> be done if this flag had not been
-    specified, without actually doing it.</para>
-
-    <para><option>--dry-run</option> also prints out which paths will
-    be <link linkend="gloss-substitute">substituted</link> (i.e.,
-    downloaded) and which paths will be built from source (because no
-    substitute is available).</para></listitem>
-
+    specified, without actually doing it.</para></listitem>
+    
+  </varlistentry>
+      
+  <varlistentry><term><option>--preserve-installed</option></term>
+  
+    <listitem><para>By default, when you install a derivation with the
+    <option>--install</option> operation, it will replace previously
+    installed versions with the same derivation name (regardless of
+    the version number).  This option causes those previously
+    installed versions to be kept in the new generation of the
+    profile.  Note that this will generally cause conflicts in the
+    creation of the user environment (since multiple versions of a
+    package typically contain the same programs).</para></listitem>
+    
   </varlistentry>
       
   <varlistentry><term><option>--system-filter</option> <replaceable>system</replaceable></term>
@@ -142,34 +142,14 @@ linkend="sec-common-options" />.</para>
 <variablelist>
 
   <varlistentry><term><filename>~/.nix-defexpr</filename></term>
-
-    <listitem><para>A directory that contains the default Nix
-    expressions used by the <option>--install</option>,
-    <option>--upgrade</option>, and <option>--query
-    --available</option> operations to obtain derivations.  The
+  
+    <listitem><para>The default Nix expression used by the
+    <option>--install</option>, <option>--upgrade</option>, and
+    <option>--query --available</option> operations to obtain
+    derivations.  It is generally a symbolic link to some other
+    location set using the <option>--import</option> operation.  The
     <option>--file</option> option may be used to override this
-    default.</para>
-
-    <para>The Nix expressions in this directory are combined into a
-    single attribute set, with each file as an attribute that has the
-    name of the file.  Thus, if <filename>~/.nix-defexpr</filename>
-    contains two files, <filename>foo</filename> and
-    <filename>bar</filename>, then the default Nix expression will
-    essentially be
-
-<programlisting>
-{
-  foo = import ~/.nix-defexpr/foo;
-  bar = import ~/.nix-defexpr/bar;
-}</programlisting>
-
-    </para>
-
-    <para>The command <command>nix-channel</command> places symlinks
-    to the downloaded Nix expressions from each subscribed channel in
-    this directory.</para>
-
-    </listitem>
+    default.</para></listitem>
     
   </varlistentry>
 
@@ -192,7 +172,7 @@ linkend="sec-common-options" />.</para>
 
 <!--######################################################################-->
 
-<refsection xml:id="rsec-nix-env-install"><title>Operation <option>--install</option></title>
+<refsection id="rsec-nix-env-install"><title>Operation <option>--install</option></title>
 
 <refsection><title>Synopsis</title>
 
@@ -202,7 +182,6 @@ linkend="sec-common-options" />.</para>
     <arg choice='plain'><option>--install</option></arg>
     <arg choice='plain'><option>-i</option></arg>
   </group>
-  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-inst-syn.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(/db:nop/*)" />
   <group choice='opt'>
     <arg choice='plain'><option>--preserve-installed</option></arg>
     <arg choice='plain'><option>-P</option></arg>
@@ -229,34 +208,7 @@ number of possible ways:
   installed.  Currently installed derivations with a name equal to the
   name of a derivation being added are removed unless the option
   <option>--preserve-installed</option> is
-  specified.</para>
-
-  <para>If there are multiple derivations matching a name in
-  <replaceable>args</replaceable> that have the same name (e.g.,
-  <literal>gcc-3.3.6</literal> and <literal>gcc-4.1.1</literal>), then
-  the derivation with the highest <emphasis>priority</emphasis> is
-  used.  A derivation can define a priority by declaring the
-  <varname>meta.priority</varname> attribute.  This attribute should
-  be a number, with a higher value denoting a lower priority.  The
-  default priority is <literal>0</literal>.</para>
-
-  <para>If there are multiple matching derivations with the same
-  priority, then the derivation with the highest version will be
-  installed.</para>
-
-  <para>You can force the installation of multiple derivations with
-  the same name by being specific about the versions.  For instance,
-  <literal>nix-env -i gcc-3.3.6 gcc-4.1.1</literal> will install both
-  version of GCC (and will probably cause a user environment
-  conflict!).</para></listitem>
-
-  <listitem><para>If <link
-  linkend='opt-attr'><option>--attr</option></link>
-  (<option>-A</option>) is specified, the arguments are
-  <emphasis>attribute paths</emphasis> that select attributes from the
-  top-level Nix expression.  This is faster than using derivation
-  names and unambiguous.  To find out the attribute paths of available
-  packages, use <literal>nix-env -qaA '*'</literal>.</para></listitem>
+  specified.</para></listitem>
 
   <listitem><para>If <option>--from-profile</option>
   <replaceable>path</replaceable> is given,
@@ -295,15 +247,6 @@ number of possible ways:
 
 <variablelist>
 
-  <varlistentry><term><option>--prebuild-only</option> / <option>-b</option></term>
-
-    <listitem><para>Use only derivations for which a substitute is
-    registered, i.e., there is a pre-built binary available that can
-    be downloaded in lieu of building the derivation.  Thus, no
-    packages will be built from source.</para></listitem>
-
-  </varlistentry>
-
   <varlistentry><term><option>--preserve-installed</option></term>
     <term><option>-P</option></term>
   
@@ -321,7 +264,7 @@ number of possible ways:
 </refsection>
             
 
-<refsection xml:id='refsec-nix-env-install-examples'><title>Examples</title>
+<refsection><title>Examples</title>
 
 <para>To install a specific version of <command>gcc</command> from the
 active Nix expression:
@@ -342,14 +285,6 @@ installing `gcc-3.3.2'</screen>
 
 </para>
 
-<para>To install using a specific attribute:
-
-<screen>
-$ nix-env -i -A gcc40mips
-$ nix-env -i -A xorg.xorgserver</screen>
-
-</para>
-
 <para>To install all derivations in the Nix expression <filename>foo.nix</filename>:
 
 <screen>
@@ -392,25 +327,6 @@ selecting the <literal>subversionWithJava</literal> attribute from the
 attribute set returned by calling the function defined in
 <filename>./foo.nix</filename>.</para>
 
-<para>A dry-run tells you which paths will be downloaded or built from
-source:
-
-<screen>
-$ nix-env -f pkgs/top-level/all-packages.nix -i f-spot --dry-run
-(dry run; not doing anything)
-installing `f-spot-0.0.10'
-the following derivations will be built:
-  /nix/store/0g63jv9aagwbgci4nnzs2dkxqz84kdja-libgnomeprintui-2.12.1.tar.bz2.drv
-  /nix/store/0gfarvxq6sannsdw8a1ir40j1ys2mqb4-ORBit2-2.14.2.tar.bz2.drv
-  /nix/store/0i9gs5zc04668qiy60ga2rc16abkj7g8-sqlite-2.8.17.drv
-  <replaceable>...</replaceable>
-the following paths will be substituted:
-  /nix/store/8zbipvm4gp9jfqh9nnk1n3bary1a37gs-perl-XML-Parser-2.34
-  /nix/store/b8a2bg7gnyvvvjjibp4axg9x1hzkw36c-mono-1.1.4
-  <replaceable>...</replaceable></screen>
-  
-</para>
-
 </refsection>
     
 </refsection>
@@ -419,7 +335,7 @@ the following paths will be substituted:
   
 <!--######################################################################-->
 
-<refsection xml:id="rsec-nix-env-upgrade"><title>Operation <option>--upgrade</option></title>
+<refsection><title>Operation <option>--upgrade</option></title>
 
 <refsection><title>Synopsis</title>
 
@@ -429,11 +345,9 @@ the following paths will be substituted:
     <arg choice='plain'><option>--upgrade</option></arg>
     <arg choice='plain'><option>-u</option></arg>
   </group>
-  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-inst-syn.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(/db:nop/*)" />
   <group choice='opt'>
     <arg choice='plain'><option>--lt</option></arg>
     <arg choice='plain'><option>--leq</option></arg>
-    <arg choice='plain'><option>--eq</option></arg>
     <arg choice='plain'><option>--always</option></arg>
   </group>
   <arg choice='plain' rep='repeat'><replaceable>args</replaceable></arg>
@@ -482,17 +396,6 @@ installed.</para>
     
   </varlistentry>
 
-  <varlistentry><term><option>--eq</option></term>
-  
-    <listitem><para><emphasis>Only</emphasis> “upgrade” to derivations
-    that have the same version.  This may not seem very useful, but it
-    actually is, e.g., when there is a new release of Nixpkgs and you
-    want to replace installed applications with the same versions
-    built against newer dependencies (to reduce the number of
-    dependencies floating around on your system).</para></listitem>
-    
-  </varlistentry>
-
   <varlistentry><term><option>--always</option></term>
   
     <listitem><para>In addition to upgrading to newer versions, also
@@ -504,9 +407,6 @@ installed.</para>
 
 </variablelist>
 
-<para>For the other flags, see <option
-linkend="rsec-nix-env-install">--install</option>.</para>
-
 </refsection>
 
 <refsection><title>Examples</title>
@@ -527,7 +427,7 @@ upgrading `mozilla-1.2' to `mozilla-1.4'</screen>
 
 </refsection>
     
-<refsection xml:id="ssec-version-comparisons"><title>Versions</title>
+<refsection><title>Versions</title>
 
 <para>The upgrade operation determines whether a derivation
 <varname>y</varname> is an upgrade of a derivation
@@ -616,111 +516,6 @@ $ nix-env -e '*' <lineannotation>(remove everything)</lineannotation></screen>
 
 
   
-<!--######################################################################-->
-
-<refsection xml:id="rsec-nix-env-set-flag"><title>Operation <option>--set-flag</option></title>
-
-<refsection><title>Synopsis</title>
-
-<cmdsynopsis>
-  <command>nix-env</command>
-  <arg choice='plain'><option>--set-flag</option></arg>
-  <arg choice='plain'><replaceable>name</replaceable></arg>
-  <arg choice='plain'><replaceable>value</replaceable></arg>
-  <arg choice='plain' rep='repeat'><replaceable>drvnames</replaceable></arg>
-</cmdsynopsis>
-</refsection>
-
-<refsection><title>Description</title>
-            
-<para>The <option>--set-flag</option> operation allows meta attributes
-of installed packages to be modified.  There are several attributes
-that can be usefully modified, because they affect the behaviour of
-<command>nix-env</command> or the user environment build
-script:
-
-<itemizedlist>
-
-  <listitem><para><varname>priority</varname> can be changed to
-  resolve filename clashes.  The user environment build script uses
-  the <varname>meta.priority</varname> attribute of derivations to
-  resolve filename collisions between packages.  Lower priority values
-  denote a higher priority.  For instance, the GCC wrapper package and
-  the Binutils package in Nixpkgs both have a file
-  <filename>bin/ld</filename>, so previously if you tried to install
-  both you would get a collision.  Now, on the other hand, the GCC
-  wrapper declares a higher priority than Binutils, so the former’s
-  <filename>bin/ld</filename> is symlinked in the user
-  environment.</para></listitem>
-
-  <listitem><para><varname>keep</varname> can be set to
-  <literal>true</literal> to prevent the package from being upgraded
-  or replaced.  This is useful if you want to hang on to an older
-  version of a package.</para></listitem>
-
-  <listitem><para><varname>active</varname> can be set to
-  <literal>false</literal> to “disable” the package.  That is, no
-  symlinks will be generated to the files of the package, but it
-  remains part of the profile (so it won’t be garbage-collected).  It
-  can be set back to <literal>true</literal> to re-enable the
-  package.</para></listitem>
-
-</itemizedlist>
-
-</para>
-
-</refsection>
-            
-<refsection><title>Examples</title>
-
-<para>To prevent the currently installed Firefox from being upgraded:
-
-<screen>
-$ nix-env --set-flag keep true firefox</screen>
-
-After this, <command>nix-env -u</command> will ignore Firefox.</para>
-
-<para>To disable the currently installed Firefox, then install a new
-Firefox while the old remains part of the profile:
-
-<screen>
-$ nix-env -q \*
-firefox-2.0.0.9 <lineannotation>(the current one)</lineannotation>
-
-$ nix-env --preserve-installed -i firefox-2.0.0.11
-installing `firefox-2.0.0.11'
-building path(s) `/nix/store/myy0y59q3ig70dgq37jqwg1j0rsapzsl-user-environment'
-Collission between `/nix/store/<replaceable>...</replaceable>-firefox-2.0.0.11/bin/firefox'
-  and `/nix/store/<replaceable>...</replaceable>-firefox-2.0.0.9/bin/firefox'.
-<lineannotation>(i.e., can’t have two active at the same time)</lineannotation>
-
-$ nix-env --set-flag active false firefox
-setting flag on `firefox-2.0.0.9'
-
-$ nix-env --preserve-installed -i firefox-2.0.0.11
-installing `firefox-2.0.0.11'
-
-$ nix-env -q \*
-firefox-2.0.0.11 <lineannotation>(the enabled one)</lineannotation>
-firefox-2.0.0.9 <lineannotation>(the disabled one)</lineannotation></screen>
-
-</para>
-
-<para>To make files from <literal>binutils</literal> take precedence
-over files from <literal>gcc</literal>:
-
-<screen>
-$ nix-env --set-flag priority 5 binutils
-$ nix-env --set-flag priority 10 gcc</screen>
-
-</para>
-
-</refsection>
-    
-</refsection>
-
-
-  
 <!--######################################################################-->
   
 <refsection><title>Operation <option>--query</option></title>
@@ -738,55 +533,12 @@ $ nix-env --set-flag priority 10 gcc</screen>
     <arg choice='plain'><option>--available</option></arg>
     <arg choice='plain'><option>-a</option></arg>
   </group>
-  
-  <sbr />
-  
-  <arg>
-    <group choice='req'>
-      <arg choice='plain'><option>--status</option></arg>
-      <arg choice='plain'><option>-s</option></arg>
-    </group>
-  </arg>
-  <arg>
-    <group choice='req'>
-      <arg choice='plain'><option>--attr-path</option></arg>
-      <arg choice='plain'><option>-P</option></arg>
-    </group>
-  </arg>
-  <arg><option>--no-name</option></arg>
-  <arg>
-    <group choice='req'>
-      <arg choice='plain'><option>--compare-versions</option></arg>
-      <arg choice='plain'><option>-c</option></arg>
-    </group>
-  </arg>
-  <arg><option>--system</option></arg>
-  <arg><option>--drv-path</option></arg>
-  <arg><option>--out-path</option></arg>
-  <arg><option>--description</option></arg>
-  <arg><option>--meta</option></arg>
-
-  <sbr />
-
-  <arg><option>--xml</option></arg>
-  <arg>
-    <group choice='req'>
-      <arg choice='plain'><option>--prebuilt-only</option></arg>
-      <arg choice='plain'><option>-b</option></arg>
-    </group>
-  </arg>
-
-  <arg>
-    <group choice='req'>
-      <arg choice='plain'><option>--attr</option></arg>
-      <arg choice='plain'><option>-A</option></arg>
-    </group>
-    <replaceable>attribute-path</replaceable>
-  </arg>
-
-  <sbr />
-  
-  <arg choice='plain' rep='repeat'><replaceable>names</replaceable></arg>
+  <group choice='req'>
+    <arg choice='plain'><option>--name</option></arg>
+    <arg choice='plain'><option>--expr</option></arg>
+    <arg choice='plain'><option>--status</option></arg>
+    <arg choice='plain'><option>-s</option></arg>
+  </group>
 </cmdsynopsis>
 
 </refsection>
@@ -798,10 +550,7 @@ $ nix-env --set-flag priority 10 gcc</screen>
 paths that are installed in the current generation of the active
 profile (<option>--installed</option>), or the derivations that are
 available for installation in the active Nix expression
-(<option>--available</option>).  It only prints information about
-derivations whose symbolic name matches one of
-<replaceable>names</replaceable>.  The wildcard <literal>*</literal>
-shows all derivations.</para>
+(<option>--available</option>).</para>
 
 <para>The derivations are sorted by their <literal>name</literal>
 attributes.</para>
@@ -850,28 +599,6 @@ user environment elements, etc. -->
 
 <variablelist>
 
-  <varlistentry><term><option>--xml</option></term>
-
-    <listitem><para>Print the result in an XML representation suitable
-    for automatic processing by other tools.  The root element is
-    called <literal>items</literal>, which contains a
-    <literal>item</literal> element for each available or installed
-    derivation.  The fields discussed below are all stored in
-    attributes of the <literal>item</literal>
-    elements.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--prebuild-only</option> / <option>-b</option></term>
-
-    <listitem><para>Show only derivations for which a substitute is
-    registered, i.e., there is a pre-built binary available that can
-    be downloaded in lieu of building the derivation.  Thus, this
-    shows all packages that probably can be installed
-    quickly.</para></listitem>
-
-  </varlistentry>
-
   <varlistentry><term><option>--status</option></term>
     <term><option>-s</option></term>
   
@@ -891,17 +618,6 @@ user environment elements, etc. -->
     
   </varlistentry>
 
-  <varlistentry><term><option>--attr-path</option></term>
-    <term><option>-P</option></term>
-
-    <listitem><para>Print the <emphasis>attribute path</emphasis> of
-    the derivation, which can be used to unambiguously select it using
-    the <link linkend="opt-attr"><option>--attr</option> option</link>
-    available in commands that install derivations like
-    <literal>nix-env --install</literal>.</para></listitem>
-
-  </varlistentry>
-  
   <varlistentry><term><option>--no-name</option></term>
   
     <listitem><para>Suppress printing of the <literal>name</literal>
@@ -909,51 +625,6 @@ user environment elements, etc. -->
     
   </varlistentry>
 
-  <varlistentry><term><option>--compare-versions</option> /
-  <option>-c</option></term>
-  
-    <listitem><para>Compare installed versions to available versions,
-    or vice versa (if <option>--available</option> is given).  This is
-    useful for quickly seeing whether upgrades for installed
-    packages are available in a Nix expression.  A column is added
-    with the following meaning:
-
-    <variablelist>
-
-      <varlistentry><term><literal>&lt;</literal> <replaceable>version</replaceable></term>
-
-        <listitem><para>A newer version of the package is available
-        or installed.</para></listitem>
-
-      </varlistentry>
-      
-      <varlistentry><term><literal>=</literal> <replaceable>version</replaceable></term>
-
-        <listitem><para>At most the same version of the package is
-        available or installed.</para></listitem>
-
-      </varlistentry>
-      
-      <varlistentry><term><literal>></literal> <replaceable>version</replaceable></term>
-
-        <listitem><para>Only older versions of the package are
-        available or installed.</para></listitem>
-
-      </varlistentry>
-      
-      <varlistentry><term><literal>- ?</literal></term>
-
-        <listitem><para>No version of the package is available or
-        installed.</para></listitem>
-
-      </varlistentry>
-
-    </variablelist>
-
-    </para></listitem>
-    
-  </varlistentry>
-
   <varlistentry><term><option>--system</option></term>
   
     <listitem><para>Print the <literal>system</literal> attribute of
@@ -975,23 +646,6 @@ user environment elements, etc. -->
     
   </varlistentry>
 
-  <varlistentry><term><option>--description</option></term>
-  
-    <listitem><para>Print a short (one-line) description of the
-    derivation, if available.  The description is taken from the
-    <literal>meta.description</literal> attribute of the
-    derivation.</para></listitem>
-    
-  </varlistentry>
-
-  <varlistentry><term><option>--meta</option></term>
-  
-    <listitem><para>Print all of the meta-attributes of the
-    derivation.  This option is only available with
-    <option>--xml</option>.</para></listitem>
-    
-  </varlistentry>
-
 </variablelist>
 
 </refsection>
@@ -1000,47 +654,28 @@ user environment elements, etc. -->
 <refsection><title>Examples</title>
 
 <screen>
-$ nix-env -q '*' <lineannotation>(show installed derivations)</lineannotation>
+$ nix-env -q <lineannotation>(show installed derivations)</lineannotation>
+MozillaFirebird-0.7
 bison-1.875c
 docbook-xml-4.2
-firefox-1.0.4
-MPlayer-1.0pre7
-ORBit2-2.8.3
 ...
 
-$ nix-env -qa '*' <lineannotation>(show available derivations)</lineannotation>
-firefox-1.0.7
+$ nix-env -qa <lineannotation>(show available derivations)</lineannotation>
 GConf-2.4.0.1
-MPlayer-1.0pre7
+MPlayer-1.0pre3
+MozillaFirebird-0.7
 ORBit2-2.8.3
 ...
 
-$ nix-env -qas '*' <lineannotation>(show status of available derivations)</lineannotation>
--P- firefox-1.0.7   <lineannotation>(not installed but present)</lineannotation>
---S GConf-2.4.0.1   <lineannotation>(not present, but there is a substitute for fast installation)</lineannotation>
---S MPlayer-1.0pre3 <lineannotation>(i.e., this is not the installed MPlayer, even though the version is the same!)</lineannotation>
-IP- ORBit2-2.8.3    <lineannotation>(installed and by definition present)</lineannotation>
+$ nix-env -qas <lineannotation>(show status of available derivations)</lineannotation>
+-P- GConf-2.4.0.1 <lineannotation>(not installed but present)</lineannotation>
+--S MPlayer-1.0pre3 <lineannotation>(not present, but there is a substitute for fast installation)</lineannotation>
+--S MozillaFirebird-0.7 <lineannotation>(i.e., this is not the installed Firebird, even though the version is the same!)</lineannotation>
+IP- bison-1.875c <lineannotation>(installed and by definition present)</lineannotation>
 ...
 
-<lineannotation>(show available derivations in the Nix expression <!-- !!! <filename>-->foo.nix<!-- </filename> -->)</lineannotation>
-$ nix-env -f ./foo.nix -qa '*' 
-foo-1.2.3
-
-$ nix-env -qc '*' <lineannotation>(compare installed versions to what’s available)</lineannotation>
-<replaceable>...</replaceable>
-acrobat-reader-7.0 - ?      <lineannotation>(package is not available at all)</lineannotation>
-autoconf-2.59      = 2.59   <lineannotation>(same version)</lineannotation>
-firefox-1.0.4      &lt; 1.0.7  <lineannotation>(a more recent version is available)</lineannotation>
-<replaceable>...</replaceable>
-
-<lineannotation>(show info about a specific package, in XML)</lineannotation>
-$ nix-env -qa --xml --description firefox 
-<![CDATA[<?xml version='1.0' encoding='utf-8'?>
-<items>
-  <item attrPath="0.0.firefoxWrapper"
-    description="Mozilla Firefox - the browser, reloaded (with various plugins)"
-    name="firefox-1.5.0.7" system="i686-linux" />
-</items>]]></screen>
+$ nix-env -f ./foo.nix -qa <lineannotation>(show available derivations in the Nix expression <filename>foo.nix</filename>)</lineannotation>
+foo-1.2.3</screen>
 
 </refsection>
 
@@ -1251,4 +886,43 @@ error: no generation older than the current (91) exists</screen>
 
 
   
+<!--######################################################################-->
+
+<refsection><title>Operation <option>--import</option></title>
+
+<refsection><title>Synopsis</title>
+
+<cmdsynopsis>
+  <command>nix-env</command>
+  <group choice='req'>
+    <arg choice='plain'><option>--import</option></arg>
+    <arg choice='plain'><option>-I</option></arg>
+  </group>
+  <arg choice='req'><replaceable>path</replaceable></arg>
+</cmdsynopsis>
+
+</refsection>
+
+
+<refsection><title>Description</title>
+            
+<para>This operation makes <replaceable>path</replaceable> the default
+active Nix expression for the user.  That is, the symlink
+<filename>~/.nix-userenv</filename> is made to point to
+<replaceable>path</replaceable>.</para>
+
+</refsection>
+
+
+<refsection><title>Examples</title>
+
+<screen>
+$ nix-env -I ~/nixpkgs-0.5/</screen>
+
+</refsection>
+    
+</refsection>
+
+
+  
 </refentry>

doc/manual/nix-hash.xml

@@ -1,163 +0,0 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-hash">
-  
-<refmeta>
-  <refentrytitle>nix-hash</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
-<refnamediv>
-  <refname>nix-hash</refname>
-  <refpurpose>compute the cryptographic hash of a path</refpurpose>
-</refnamediv>
-
-<refsynopsisdiv>
-  <cmdsynopsis>
-    <command>nix-hash</command>
-    <arg><option>--flat</option></arg>
-    <arg><option>--base32</option></arg>
-    <arg><option>--truncate</option></arg>
-    <arg><option>--type</option> <replaceable>hashAlgo</replaceable></arg>
-    <arg choice='plain' rep='repeat'><replaceable>path</replaceable></arg>
-  </cmdsynopsis>
-  <cmdsynopsis>
-    <command>nix-hash</command>
-    <arg choice='plain'><option>--to-base16</option></arg>
-    <arg choice='plain' rep='repeat'><replaceable>hash</replaceable></arg>
-  </cmdsynopsis>
-  <cmdsynopsis>
-    <command>nix-hash</command>
-    <arg choice='plain'><option>--to-base32</option></arg>
-    <arg choice='plain' rep='repeat'><replaceable>hash</replaceable></arg>
-  </cmdsynopsis>
-</refsynopsisdiv>
-
-
-<refsection><title>Description</title>
-
-<para>The command <command>nix-hash</command> computes the
-cryptographic hash of the contents of each
-<replaceable>path</replaceable> and prints it on standard output.  By
-default, it computes an MD5 hash, but other hash algorithms are
-available as well.  The hash is printed in hexadecimal.</para>
-
-<para>The hash is computed over a <emphasis>serialisation</emphasis>
-of each path: a dump of the file system tree rooted at the path.  This
-allows directories and symlinks to be hashed as well as regular files.
-The dump is in the <emphasis>NAR format</emphasis> produced by <link
-linkend="refsec-nix-store-dump"><command>nix-store</command>
-<option>--dump</option></link>.  Thus, <literal>nix-hash
-<replaceable>path</replaceable></literal> yields the same
-cryptographic hash as <literal>nix-store --dump
-<replaceable>path</replaceable> | md5sum</literal>.</para>
-
-</refsection>
-
-
-<refsection><title>Options</title>
-
-<variablelist>
-  
-  <varlistentry><term><option>--flat</option></term>
-
-    <listitem><para>Print the cryptographic hash of the contents of
-    each regular file <replaceable>path</replaceable>.  That is, do
-    not compute the hash over the dump of
-    <replaceable>path</replaceable>.  The result is identical to that
-    produced by the GNU commands <command>md5sum</command> and
-    <command>sha1sum</command>.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--base32</option></term>
-
-    <listitem><para>Print the hash in a base-32 representation rather
-    than hexadecimal.  This base-32 representation is more compact and
-    can be used in Nix expressions (such as in calls to
-    <function>fetchurl</function>).</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--truncate</option></term>
-
-    <listitem><para>Truncate hashes longer than 160 bits (such as
-    SHA-256) to 160 bits.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--type</option> <replaceable>hashAlgo</replaceable></term>
-
-    <listitem><para>Specify a cryptographic hash, which can be one of
-    <literal>md5</literal>, <literal>sha1</literal>, and
-    <literal>sha256</literal>.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--to-base16</option></term>
-
-    <listitem><para>Don’t hash anything, but convert the base-32 hash
-    representation <replaceable>hash</replaceable> to
-    hexadecimal.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--to-base32</option></term>
-
-    <listitem><para>Don’t hash anything, but convert the hexadecimal
-    hash representation <replaceable>hash</replaceable> to
-    base-32.</para></listitem>
-
-  </varlistentry>
-
-</variablelist>
-
-</refsection>
-
-
-<refsection><title>Examples</title>
-
-<para>Computing hashes:
-
-<screen>
-$ mkdir test
-$ echo "hello" > test/world
-
-$ nix-hash test/ <lineannotation>(MD5 hash; default)</lineannotation>
-8179d3caeff1869b5ba1744e5a245c04
-
-$ nix-store --dump test/ | md5sum <lineannotation>(for comparison)</lineannotation>
-8179d3caeff1869b5ba1744e5a245c04  -
-
-$ nix-hash --type sha1 test/
-e4fd8ba5f7bbeaea5ace89fe10255536cd60dab6
-
-$ nix-hash --type sha1 --base32 test/
-nvd61k9nalji1zl9rrdfmsmvyyjqpzg4
-
-$ nix-hash --type sha256 --flat test/
-error: reading file `test/': Is a directory
-
-$ nix-hash --type sha256 --flat test/world
-5891b5b522d5df086d0ff0b110fbd9d21bb4fc7163af34d08286a2e846f6be03</screen>
-
-</para>
-
-<para>Converting between hexadecimal and base-32:
-
-<screen>
-$ nix-hash --type sha1 --to-base32 e4fd8ba5f7bbeaea5ace89fe10255536cd60dab6
-nvd61k9nalji1zl9rrdfmsmvyyjqpzg4
-
-$ nix-hash --type sha1 --to-base16 nvd61k9nalji1zl9rrdfmsmvyyjqpzg4
-e4fd8ba5f7bbeaea5ace89fe10255536cd60dab6</screen>
-
-</para>
-
-</refsection>
-
-
-</refentry>

doc/manual/nix-install-package.xml

@@ -1,198 +0,0 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-install-package">
-  
-<refmeta>
-  <refentrytitle>nix-install-package</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
-<refnamediv>
-  <refname>nix-install-package</refname>
-  <refpurpose>install a Nix Package file</refpurpose>
-</refnamediv>
-
-<refsynopsisdiv>
-  <cmdsynopsis>
-    <command>nix-install-package</command>
-    <arg><option>--non-interactive</option></arg>
-    <arg>
-      <group choice='req'>
-        <arg choice='plain'><option>--profile</option></arg>
-        <arg choice='plain'><option>-p</option></arg>
-      </group>
-      <replaceable>path</replaceable>
-    </arg>
-    <sbr />
-    <group choice='req'>
-      <arg choice='req'>
-        <option>--url</option>
-        <arg choice='plain'><replaceable>url</replaceable></arg>
-      </arg>
-      <arg choice='req'>
-        <arg choice='plain'><replaceable>file</replaceable></arg>
-      </arg>
-    </group>
-  </cmdsynopsis>
-</refsynopsisdiv>
-
-
-<refsection><title>Description</title>
-
-<para>The command <command>nix-install-package</command> interactively
-installs a Nix Package file (<filename>*.nixpkg</filename>), which is
-a small file that contains a store path to be installed along with the
-URL of a <link linkend="sec-nix-push"><command>nix-push</command>
-manifest</link>.  The Nix Package file is either
-<replaceable>file</replaceable>, or automatically downloaded from
-<replaceable>url</replaceable> if the <option>--url</option> switch is
-used.</para>
-
-<para><command>nix-install-package</command> is used in <link
-linkend="sec-one-click">one-click installs</link> to download and
-install pre-built binary packages with all necessary dependencies.
-<command>nix-install-package</command> is intended to be associated
-with the MIME type <literal>application/nix-package</literal> in a web
-browser so that it is invoked automatically when you click on
-<filename>*.nixpkg</filename> files.  When invoked, it restarts itself
-in a terminal window (since otherwise it would be invisible when run
-from a browser), asks the user to confirm whether to install the
-package, and if so downloads and installs the package into the user’s
-current profile.</para>
-
-<para>To obtain a window, <command>nix-install-package</command> tries
-to restart itself with <command>xterm</command>,
-<command>konsole</command> and
-<command>gnome-terminal</command>.</para>
-
-</refsection>
-
-
-<refsection><title>Options</title>
-
-<variablelist>
-  
-  <varlistentry><term><option>--non-interactive</option></term>
-
-    <listitem><para>Do not open a new terminal window and do not ask
-    for confirmation.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--profile</option></term>
-    <term><option>-p</option></term>
-
-    <listitem><para>Install the package into the specified profile
-    rather than the user’s current profile.</para></listitem>
-
-  </varlistentry>
-
-</variablelist>
-
-</refsection>
-
-
-<refsection><title>Examples</title>
-
-<para>To install <filename>subversion-1.4.0.nixpkg</filename> into the
-user’s current profile, without any prompting:
-
-<screen>
-$ nix-install-package --non-interactive subversion-1.4.0.nixpkg</screen>
-
-</para>
-
-<para>To install the same package from some URL into a different
-profile:
-
-<screen>
-$ nix-install-package --non-interactive -p /nix/var/nix/profiles/eelco \
-    --url http://nix.cs.uu.nl/dist/nix/nixpkgs-0.10pre6622/pkgs/subversion-1.4.0-i686-linux.nixpkg</screen>
-
-</para>
-
-</refsection>
-
-
-<refsection><title>Format of <literal>nixpkg</literal> files</title>
-
-<para>A Nix Package file consists of a single line with the following
-format:
-
-<screen>
-NIXPKG1 <replaceable>manifestURL</replaceable> <replaceable>name</replaceable> <replaceable>system</replaceable> <replaceable>drvPath</replaceable> <replaceable>outPath</replaceable></screen>
-
-The elemens are as follows:
-
-<variablelist>
-
-  <varlistentry><term><literal>NIXPKG1</literal></term>
-  
-    <listitem><para>The version of the Nix Package
-    file.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><replaceable>manifestURL</replaceable></term>
-  
-    <listitem><para>The manifest to be pulled by
-    <command>nix-pull</command>.  The manifest must contain
-    <replaceable>outPath</replaceable>.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><replaceable>name</replaceable></term>
-  
-    <listitem><para>The symbolic name and version of the
-    package.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><replaceable>system</replaceable></term>
-  
-    <listitem><para>The platform identifier of the platform for which
-    this binary package is intended.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><replaceable>drvPath</replaceable></term>
-  
-    <listitem><para>The path in the Nix store of the derivation from
-    which <replaceable>outPath</replaceable> was built.  Not currently
-    used.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><replaceable>outPath</replaceable></term>
-  
-    <listitem><para>The path in the Nix store of the package.  After
-    <command>nix-install-package</command> has obtained the manifest
-    from <replaceable>manifestURL</replaceable>, it performs a
-    <literal>nix-env -i</literal> <replaceable>outPath</replaceable>
-    to install the binary package.</para></listitem>
-
-  </varlistentry>
-
-</variablelist>
-  
-</para>
-
-<para>An example follows:
-
-<screen>
-NIXPKG1 http://.../nixpkgs-0.10pre6622/MANIFEST subversion-1.4.0 i686-darwin \
-  /nix/store/4kh60jkp...-subversion-1.4.0.drv \
-  /nix/store/nkw7wpgb...-subversion-1.4.0</screen>
-
-(The line breaks (<literal>\</literal>) are for presentation purposes
-and not part of the actual file.)
-
-</para>
-
-</refsection>
-
-
-</refentry>

doc/manual/nix-instantiate.xml

@@ -1,15 +1,5 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-instantiate">
+<refentry>
   
-<refmeta>
-  <refentrytitle>nix-instantiate</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
 <refnamediv>
   <refname>nix-instantiate</refname>
   <refpurpose>instantiate store derivations from Nix expressions</refpurpose>
@@ -18,27 +8,13 @@
 <refsynopsisdiv>
   <cmdsynopsis>
     <command>nix-instantiate</command>
-    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-common-syn.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(/db:nop/*)" />
-    <arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
-    <arg>
-      <group choice='req'>
-        <arg choice='plain'><option>--attr</option></arg>
-        <arg choice='plain'><option>-A</option></arg>
-      </group>
-      <replaceable>attrPath</replaceable>
-    </arg>
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-common-syn.xml#xpointer(/nop/*)" />
     <arg><option>--add-root</option> <replaceable>path</replaceable></arg>
     <arg><option>--indirect</option></arg>
-    <arg>
-      <group choice='req'>
-        <arg choice='plain'><option>--parse-only</option></arg>
-        <arg choice='plain'>
-          <option>--eval-only</option>
-          <arg><option>--strict</option></arg>
-        </arg>
-      </group>
-      <arg><option>--xml</option></arg>
-    </arg>
+    <group choice='opt'>
+      <arg choice='plain'><option>--parse-only</option></arg>
+      <arg choice='plain'><option>--eval-only</option></arg>
+    </group>
     <arg choice='plain' rep='repeat'><replaceable>files</replaceable></arg>
   </cmdsynopsis>
 </refsynopsisdiv>
@@ -54,10 +30,6 @@ evaluate to a derivation, a list of derivations, or a set of
 derivations.  The paths of the resulting store derivations are printed
 on standard output.</para>
 
-<para>If <replaceable>files</replaceable> is the character
-<literal>-</literal>, then a Nix expression will be read from standard
-input.</para>
-
 <para>Most users and developers don’t need to use this command
 (<command>nix-env</command> and <command>nix-build</command> perform
 store derivation instantiation from Nix expressions automatically).
@@ -100,31 +72,6 @@ common options.</para>
     
   </varlistentry>
 
-  <varlistentry><term><option>--xml</option></term>
-
-    <listitem><para>When used with <option>--parse-only</option> and
-    <option>--eval-only</option>, print the resulting expression as an
-    XML representation of the abstract syntax tree rather than as an
-    ATerm.  The schema is the same as that used by the <link
-    linkend="builtin-toXML"><function>toXML</function>
-    built-in</link>.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--strict</option></term>
-
-    <listitem><para>When used with <option>--eval-only</option>,
-    recursively evaluate list elements and attributes.  Normally, such
-    sub-expressions are left unevaluated (since the Nix expression
-    language is lazy).</para>
-
-    <warning><para>This option can cause non-termination, because lazy
-    data structures can be infinitely large.</para></warning>
-
-    </listitem>
-
-  </varlistentry>
-
 </variablelist>
 
 </refsection>
@@ -132,9 +79,6 @@ common options.</para>
 
 <refsection><title>Examples</title>
 
-<para>Instantiating store derivations from a Nix expression, and
-building them using <command>nix-store</command>:
-
 <screen>
 $ nix-instantiate test.nix <lineannotation>(instantiate)</lineannotation>
 /nix/store/cigxbmvy6dzix98dxxh9b6shg7ar5bvs-perl-BerkeleyDB-0.26.drv
@@ -147,54 +91,6 @@ $ ls -l /nix/store/qhqk4n8ci095g3sdp93x7rgwyh9rdvgk-perl-BerkeleyDB-0.26
 dr-xr-xr-x    2 eelco    users        4096 1970-01-01 01:00 lib
 ...</screen>
 
-</para>
-
-<para>Parsing and evaluating Nix expressions:
-
-<screen>
-$ echo '"foo" + "bar"' | nix-instantiate --parse-only -
-OpPlus(Str("foo"),Str("bar"))
-
-$ echo '"foo" + "bar"' | nix-instantiate --eval-only -
-Str("foobar")
-
-$ echo '"foo" + "bar"' | nix-instantiate --eval-only --xml -
-<![CDATA[<?xml version='1.0' encoding='utf-8'?>
-<expr>
-  <string value="foobar" />
-</expr>]]></screen>
-
-</para>
-
-<para>The difference between non-strict and strict evaluation:
-
-<screen>
-$ echo 'rec { x = "foo"; y = x; }' | nix-instantiate --eval-only --xml -
-<replaceable>...</replaceable><![CDATA[
-    <attr name="x">
-      <string value="foo" />
-    </attr>
-    <attr name="y">
-      <unevaluated />
-    </attr>]]>
-<replaceable>...</replaceable></screen>
-
-Note that <varname>y</varname> is left unevaluated (the XML
-representation doesn’t attempt to show non-normal forms).
-
-<screen>
-$ echo 'rec { x = "foo"; y = x; }' | nix-instantiate --eval-only --xml --strict -
-<replaceable>...</replaceable><![CDATA[
-    <attr name="x">
-      <string value="foo" />
-    </attr>
-    <attr name="y">
-      <string value="foo" />
-    </attr>]]>
-<replaceable>...</replaceable></screen>
-
-</para>
-
 </refsection>
 
 

doc/manual/nix-lang-ref.xml

@@ -178,5 +178,100 @@
     </productionset>
     
   </sect1>
+  
+
+
+  <sect1>
+    <title>Semantics</title>
+
+
+    
+    <sect2>
+      <title>Built-in functions</title>
+
+      <para>
+        The Nix language provides the following built-in function
+        (<quote>primops</quote>):
+      </para>
+
+      <variablelist>
+
+        <varlistentry>
+          <term><function>import</function>
+          <replaceable>e</replaceable></term>
+          <listitem>
+            <para>
+              Evaluates the expression <replaceable>e</replaceable>,
+              which must yield a path value.  The Nix expression
+              stored at this path in the file system is then read,
+              parsed, and evaluated.  Returns the result of the
+              evaluation of the Nix expression just read.
+            </para>
+
+            <para>
+              Example: <literal>import ./foo.nix</literal> evaluates
+              the expression stored in <filename>foo.nix</filename>
+              (in the directory containing the expression in which the
+              <function>import</function> occurs).
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><function>derivation</function>
+          <replaceable>e</replaceable></term>
+          <listitem>
+            <para>
+              Evaluates the expression <replaceable>e</replaceable>,
+              which must yield an attribute set.  [...]
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><function>baseNameOf</function>
+          <replaceable>e</replaceable></term>
+          <listitem>
+            <para>
+              Evaluates the expression <replaceable>e</replaceable>,
+              which must yield a string value, and returns a string
+              representing its <emphasis>base name</emphasis>.  This
+              is the substring following the last path separator
+              (<literal>/</literal>).
+            </para>
+
+            <para>
+              Example: <literal>baseNameOf "/foo/bar"</literal>
+              returns <literal>"bar"</literal>, and
+              <literal>baseNameOf "/foo/bar/"</literal> returns
+              <literal>""</literal>.
+            </para>
+          </listitem>
+        </varlistentry>
+
+        <varlistentry>
+          <term><function>toString</function>
+          <replaceable>e</replaceable></term>
+          <listitem>
+            <para>
+              Evaluates the expression <replaceable>e</replaceable>
+              and coerces it into a string, if possible.  Only
+              strings, paths, and URIs can be so coerced.
+            </para>
+
+            <para>
+              Example: <literal>toString
+              http://www.cs.uu.nl/</literal> returns
+              <literal>"http://www.cs.uu.nl/"</literal>.
+            </para>
+          </listitem>
+        </varlistentry>
+            
+      </variablelist>
+
+    </sect2>
+
+  </sect1>
+  
 
 </appendix>

doc/manual/nix-prefetch-url.xml

@@ -1,15 +1,5 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-prefetch-url">
+<refentry>
   
-<refmeta>
-  <refentrytitle>nix-prefetch-url</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
 <refnamediv>
   <refname>nix-prefetch-url</refname>
   <refpurpose>copy a file from a URL into the store and print its MD5 hash</refpurpose>
@@ -48,7 +38,7 @@ avoided.</para>
 <para>The environment variable <envar>NIX_HASH_ALGO</envar> specifies
 which hash algorithm to use.  It can be either <literal>md5</literal>,
 <literal>sha1</literal>, or <literal>sha256</literal>.  The default is
-<literal>sha256</literal>.</para>
+<literal>md5</literal>.</para>
 
 <para>If <replaceable>hash</replaceable> is specified, then a download
 is not performed if the Nix store already contains a file with the

doc/manual/nix-pull.xml

@@ -1,50 +1,43 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-pull">
+<refentry>
+  <refnamediv>
+    <refname>nix-pull</refname>
+    <refpurpose>pull substitutes from a network cache</refpurpose>
+  </refnamediv>
 
-<refmeta>
-  <refentrytitle>nix-pull</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
+  <refsynopsisdiv>
+    <cmdsynopsis>
+      <command>nix-pull</command>
+      <arg choice='plain'><replaceable>url</replaceable></arg>
+    </cmdsynopsis>
+  </refsynopsisdiv>
 
-<refnamediv>
-  <refname>nix-pull</refname>
-  <refpurpose>pull substitutes from a network cache</refpurpose>
-</refnamediv>
+  <refsection>
+    <title>Description</title>
 
-<refsynopsisdiv>
-  <cmdsynopsis>
-    <command>nix-pull</command>
-    <arg choice='plain'><replaceable>url</replaceable></arg>
-  </cmdsynopsis>
-</refsynopsisdiv>
+    <para>
+      The command <command>nix-pull</command> obtains a list of
+      pre-built store paths from the URL
+      <replaceable>url</replaceable>, and for each of these store
+      paths, registers a substitute derivation that downloads and
+      unpacks it into the Nix store.  This is used to speed up
+      installations: if you attempt to install something that has
+      already been built and stored into the network cache, Nix can
+      transparently re-use the pre-built store paths.
+    </para>
 
+    <para>
+      The file at <replaceable>url</replaceable> must be compatible
+      with the files created by <replaceable>nix-push</replaceable>.
+    </para>
 
-<refsection><title>Description</title>
+  </refsection>
 
-<para>The command <command>nix-pull</command> obtains a list of
-pre-built store paths from the URL <replaceable>url</replaceable>, and
-for each of these store paths, registers a substitute derivation that
-downloads and unpacks it into the Nix store.  This is used to speed up
-installations: if you attempt to install something that has already
-been built and stored into the network cache, Nix can transparently
-re-use the pre-built store paths.</para>
-
-<para>The file at <replaceable>url</replaceable> must be compatible
-with the files created by <replaceable>nix-push</replaceable>.</para>
-
-</refsection>
-
-
-<refsection><title>Examples</title>
-
-<screen>
-$ nix-pull http://nix.cs.uu.nl/dist/nix/nixpkgs-0.5pre753/MANIFEST</screen>
-
-</refsection>
+  <refsection>
+    <title>Examples</title>
 
+    <screen>
+$ nix-pull http://catamaran.labs.cs.uu.nl/dist/nix/nixpkgs-0.5pre753/MANIFEST</screen>
 
+  </refsection>
+    
 </refentry>

doc/manual/nix-push.xml

@@ -1,14 +1,4 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-push">
-
-<refmeta>
-  <refentrytitle>nix-push</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
+<refentry>
 
 <refnamediv>
   <refname>nix-push</refname>
@@ -72,15 +62,14 @@ machines using the <command>nix-pull</command> command.</para>
   specified by <replaceable>archivesPutURL</replaceable>.  HTTP PUT
   requests are used to do this.  However, before a file
   <varname>x</varname> is uploaded to
-  <literal><replaceable>archivesPutURL</replaceable>/</literal><varname>x</varname>,
+  <literal><replaceable>archivesPutURL</replaceable>/<varname>x</varname></literal>,
   <command>nix-push</command> first determines whether this upload is
   unnecessary by issuing a HTTP HEAD request on
-  <literal><replaceable>archivesGetURL</replaceable>/</literal><varname>x</varname>.
+  <literal><replaceable>archivesGetURL</replaceable>/<varname>x</varname></literal>.
   This allows a cache to be shared between many partially overlapping
   <command>nix-push</command> invocations.  (We use two URLs because
   the upload URL typically refers to a CGI script, while the download
-  URL just refers to a file system directory on the
-  server.)</para></listitem>
+  URL just refers to a file system directory on the server.)</para></listitem>
 
   <listitem><para>The manifest is uploaded using an HTTP PUT request
   to <replaceable>manifestPutURL</replaceable>.  The corresponding
@@ -91,9 +80,7 @@ machines using the <command>nix-pull</command> command.</para>
 
 </para>
 
-<!--
-<para>TODO:  <option>- -copy</option></para>
--->
+<para>TODO: <option>--copy</option></para>
             
 </refsection>
 
@@ -120,7 +107,7 @@ dependencies used in the build, such as compilers).</para>
 dependencies, we can do:
       
 <screen>
-$ nix-push <replaceable>urls</replaceable> $(nix-store -r $(nix-instantiate foo.nix))</screen>
+$ nix-push <replaceable>urls</replaceable> $(nix-instantiate $(nix-store -r foo.nix))</screen>
     
 </para>
 

doc/manual/nix-store.xml

@@ -1,14 +1,4 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-store">
-
-<refmeta>
-  <refentrytitle>nix-store</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
+<refentry>
 
 <refnamediv>
   <refname>nix-store</refname>
@@ -18,7 +8,7 @@
 <refsynopsisdiv>
   <cmdsynopsis>
     <command>nix-store</command>
-    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-common-syn.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(/db:nop/*)" />
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-common-syn.xml#xpointer(/nop/*)" />
     <arg><option>--add-root</option> <replaceable>path</replaceable></arg>
     <arg><option>--indirect</option></arg>
     <arg choice='plain'><replaceable>operation</replaceable></arg>
@@ -53,7 +43,7 @@ linkend="sec-common-options" /> for a list of common options.</para>
 
 <variablelist>
 
-  <varlistentry xml:id="opt-add-root"><term><option>--add-root</option> <replaceable>path</replaceable></term>
+  <varlistentry id="opt-add-root"><term><option>--add-root</option> <replaceable>path</replaceable></term>
 
     <listitem><para>Causes the result of a realisation
     (<option>--realise</option> and <option>--force-realise</option>)
@@ -118,7 +108,8 @@ lrwxrwxrwx    1 ... 2005-03-13 21:10 /home/eelco/bla/result -> /nix/store/1r1134
 
 <!--######################################################################-->
 
-<refsection xml:id='rsec-nix-store-realise'><title>Operation <option>--realise</option></title>
+<refsection id='rsec-nix-store-realise'><title>Operation
+<option>--realise</option></title>
 
 <refsection><title>Synopsis</title>
 
@@ -129,7 +120,6 @@ lrwxrwxrwx    1 ... 2005-03-13 21:10 /home/eelco/bla/result -> /nix/store/1r1134
     <arg choice='plain'><option>-r</option></arg>
   </group>
   <arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
-  <arg><option>--dry-run</option></arg>
 </cmdsynopsis>
 
 </refsection>
@@ -168,11 +158,6 @@ the specified store paths.  Realisation is a somewhat overloaded term:
 output.  (For non-derivations argument, the argument itself is
 printed.)</para>
 
-<para>If the <option>--dry-run</option> option is used, then
-<command>nix-store</command> will print on standard error a
-description of what packages would be built or downloaded, and then
-quit.</para>
-
 </refsection>
             
 
@@ -198,7 +183,7 @@ linkend="sec-nix-build"><command>nix-build</command></link> does.</para>
 
 <!--######################################################################-->
 
-<refsection xml:id='rsec-nix-store-gc'><title>Operation <option>--gc</option></title>
+<refsection id='rsec-nix-store-gc'><title>Operation <option>--gc</option></title>
 
 <refsection><title>Synopsis</title>
 
@@ -211,8 +196,6 @@ linkend="sec-nix-build"><command>nix-build</command></link> does.</para>
     <arg choice='plain'><option>--print-dead</option></arg>
     <arg choice='plain'><option>--delete</option></arg>
   </group>
-  <arg><option>--max-freed</option> <replaceable>bytes</replaceable></arg>
-  <arg><option>--max-links</option> <replaceable>nrlinks</replaceable></arg>
 </cmdsynopsis>
 
 </refsection>
@@ -267,44 +250,12 @@ the Nix store not reachable via file system references from a set of
 
 </variablelist>
 
-<para>By default, all unreachable paths are deleted.  The following
-options control what gets deleted and in what order:
-
-<variablelist>
-
-  <varlistentry><term><option>--max-freed</option> <replaceable>bytes</replaceable></term>
-  
-    <listitem><para>Keep deleting paths until at least
-    <replaceable>bytes</replaceable> bytes have been
-    deleted, then stop.</para></listitem>
-    
-  </varlistentry>
-
-  <varlistentry><term><option>--max-links</option> <replaceable>nrlinks</replaceable></term>
-  
-    <listitem><para>Keep deleting paths until the hard link count on
-    <filename>/nix/store</filename> is less than
-    <replaceable>nrlinks</replaceable>, then stop.  This is useful for
-    very large Nix stores on filesystems with a 32000 subdirectories
-    limit (like <literal>ext3</literal>).</para></listitem>
-    
-  </varlistentry>
-
-</variablelist>
-
-</para>
-
-<para>The behaviour of the collector is also influenced by the <link
+<para>The behaviour of the collector is influenced by the <link
 linkend="conf-gc-keep-outputs"><literal>gc-keep-outputs</literal></link>
 and <link
 linkend="conf-gc-keep-derivations"><literal>gc-keep-derivations</literal></link>
 variables in the Nix configuration file.</para>
 
-<para>With <option>--delete</option>, the collector prints the total
-number of freed bytes when it finishes (or when it is interrupted).
-With <option>--print-dead</option>, it prints the number of bytes that
-would be freed.</para>
-
 </refsection>
 
 
@@ -313,17 +264,7 @@ would be freed.</para>
 <para>To delete all unreachable paths, just do:
     
 <screen>
-$ nix-store --gc
-deleting `/nix/store/kq82idx6g0nyzsp2s14gfsc38npai7lf-cairo-1.0.4.tar.gz.drv'
-<replaceable>...</replaceable>
-8825586 bytes freed (8.42 MiB)</screen>
-
-</para>
-
-<para>To delete at least 100 MiBs of unreachable paths:
-
-<screen>
-$ nix-store --gc --max-freed $((100 * 1024 * 1024))</screen>
+$ nix-store --gc</screen>
 
 </para>
 
@@ -336,52 +277,7 @@ $ nix-store --gc --max-freed $((100 * 1024 * 1024))</screen>
   
 <!--######################################################################-->
 
-<refsection><title>Operation <option>--delete</option></title>
-
-<refsection><title>Synopsis</title>
-
-<cmdsynopsis>
-  <command>nix-store</command>
-  <arg choice='plain'><option>--delete</option></arg>
-  <arg><option>--ignore-liveness</option></arg>
-  <arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
-</cmdsynopsis>
-
-</refsection>
-
-<refsection><title>Description</title>
-
-<para>The operation <option>--delete</option> deletes the store paths
-<replaceable>paths</replaceable> from the Nix store, but only if it is
-safe to do so; that is, when the path is not reachable from a root of
-the garbage collector.  This means that you can only delete paths that
-would also be deleted by <literal>nix-store --gc</literal>.  Thus,
-<literal>--delete</literal> is a more targeted version of
-<literal>--gc</literal>.</para>
-
-<para>With the option <option>--ignore-liveness</option>, reachability
-from the roots is ignored.  However, the path still won’t be deleted
-if there are other paths in the store that refer to it (i.e., depend
-on it).</para>
-
-</refsection>
-
-<refsection><title>Example</title>
-
-<screen>
-$ nix-store --delete /nix/store/zq0h41l75vlb4z45kzgjjmsjxvcv1qk7-mesa-6.4
-0 bytes freed (0.00 MiB)
-error: cannot delete path `/nix/store/zq0h41l75vlb4z45kzgjjmsjxvcv1qk7-mesa-6.4' since it is still alive</screen>
-
-</refsection>
-
-</refsection>
-
-
-
-<!--######################################################################-->
-
-<refsection xml:id='refsec-nix-store-query'><title>Operation <option>--query</option></title>
+<refsection><title>Operation <option>--query</option></title>
 
 <refsection><title>Synopsis</title>
 
@@ -396,15 +292,14 @@ error: cannot delete path `/nix/store/zq0h41l75vlb4z45kzgjjmsjxvcv1qk7-mesa-6.4'
     <arg choice='plain'><option>--requisites</option></arg>
     <arg choice='plain'><option>-R</option></arg>
     <arg choice='plain'><option>--references</option></arg>
-    <arg choice='plain'><option>--referrers</option></arg>
-    <arg choice='plain'><option>--referrers-closure</option></arg>
+    <arg choice='plain'><option>--referers</option></arg>
+    <arg choice='plain'><option>--referers-closure</option></arg>
     <arg choice='plain'><option>--deriver</option></arg>
     <arg choice='plain'><option>--deriver</option></arg>
     <arg choice='plain'><option>--graph</option></arg>
     <arg choice='plain'><option>--tree</option></arg>
     <arg choice='plain'><option>--binding</option> <replaceable>name</replaceable></arg>
     <arg choice='plain'><option>--hash</option></arg>
-    <arg choice='plain'><option>--roots</option></arg>
   </group>
   <arg><option>--use-output</option></arg>
   <arg><option>-u</option></arg>
@@ -458,7 +353,7 @@ query is applied to the target of the symlink.</para>
 </refsection>
     
 
-<refsection xml:id='nixref-queries'><title>Queries</title>
+<refsection id='nixref-queries'><title>Queries</title>
             
 <variablelist>
 
@@ -516,21 +411,21 @@ query is applied to the target of the symlink.</para>
 
   </varlistentry>
   
-  <varlistentry><term><option>--referrers</option></term>
+  <varlistentry><term><option>--referers</option></term>
   
-    <listitem><para>Prints the set of <emphasis>referrers</emphasis> of
+    <listitem><para>Prints the set of <emphasis>referers</emphasis> of
     the store paths <replaceable>paths</replaceable>, that is, the
     store paths currently existing in the Nix store that refer to one
     of <replaceable>paths</replaceable>.  Note that contrary to the
-    references, the set of referrers is not constant; it can change as
+    references, the set of referers is not constant; it can change as
     store paths are added or removed.</para></listitem>
 
   </varlistentry>
   
-  <varlistentry><term><option>--referrers-closure</option></term>
+  <varlistentry><term><option>--referers-closure</option></term>
   
     <listitem><para>Prints the closure of the set of store paths
-    <replaceable>paths</replaceable> under the referrers relation; that
+    <replaceable>paths</replaceable> under the referers relation; that
     is, all store paths that directly or indirectly refer to one of
     <replaceable>paths</replaceable>.  These are all the path currently
     in the Nix store that are dependent on
@@ -553,11 +448,11 @@ query is applied to the target of the symlink.</para>
   
     <listitem><para>Prints the references graph of the store paths
     <replaceable>paths</replaceable> in the format of the
-    <command>dot</command> tool of AT&amp;T's <link
-    xlink:href="http://www.graphviz.org/">Graphviz package</link>.
-    This can be used to visualise dependency graphs.  To obtain a
-    build-time dependency graph, apply this to a store derivation.  To
-    obtain a runtime dependency graph, apply it to an output
+    <command>dot</command> tool of AT&amp;T's <ulink
+    url="http://www.graphviz.org/">Graphviz package</ulink>.  This can
+    be used to visualise dependency graphs.  To obtain a build-time
+    dependency graph, apply this to a store derivation.  To obtain a
+    runtime dependency graph, apply it to an output
     path.</para></listitem>
 
   </varlistentry>
@@ -587,20 +482,12 @@ query is applied to the target of the symlink.</para>
   <varlistentry><term><option>--hash</option></term>
   
     <listitem><para>Prints the SHA-256 hash of the contents of the
-    store paths <replaceable>paths</replaceable>.  Since the hash is
+    store path <replaceable>paths</replaceable>.  Since the hash is
     stored in the Nix database, this is a fast
     operation.</para></listitem>
 
   </varlistentry>
 
-  <varlistentry><term><option>--roots</option></term>
-  
-    <listitem><para>Prints the garbage collector roots that point,
-    directly or indirectly, at the store paths
-    <replaceable>paths</replaceable>.</para></listitem>
-
-  </varlistentry>
-
 </variablelist>
 
 </refsection>
@@ -649,7 +536,7 @@ $ nix-store -q --tree $(nix-store -qd $(which svn))
 <command>svn</command>:
 
 <screen>
-$ nix-store -q --referrers $(nix-store -q --binding openssl $(nix-store -qd $(which svn)))
+$ nix-store -q --referers $(nix-store -q --binding openssl $(nix-store -qd $(which svn)))
 /nix/store/23ny9l9wixx21632y2wi4p585qhva1q8-sylpheed-1.0.0
 /nix/store/5mbglq5ldqld8sj57273aljwkfvj22mc-subversion-1.1.4
 /nix/store/dpmvp969yhdqs7lm2r1a3gng7pyq6vy4-subversion-1.1.3
@@ -661,7 +548,7 @@ $ nix-store -q --referrers $(nix-store -q --binding openssl $(nix-store -qd $(wh
 (C library) used by <command>svn</command>:
 
 <screen>
-$ nix-store -q --referrers-closure $(ldd $(which svn) | grep /libc.so | awk '{print $3}')
+$ nix-store -q --referers-closure $(ldd $(which svn) | grep /libc.so | awk '{print $3}')
 /nix/store/034a6h4vpz9kds5r6kzb9lhh81mscw43-libgnomeprintui-2.8.2
 /nix/store/15l3yi0d45prm7a82pcrknxdh6nzmxza-gawk-3.1.4
 <replaceable>...</replaceable></screen>
@@ -678,18 +565,6 @@ $ gv graph.ps</screen>
 
 </para>
 
-<para>Show every garbage collector root that points to a store path
-that depends on <command>svn</command>:
-
-<screen>
-$ nix-store -q --roots $(which svn)
-/nix/var/nix/profiles/default-81-link
-/nix/var/nix/profiles/default-82-link
-/nix/var/nix/profiles/per-user/eelco/profile-97-link
-</screen>
-
-</para>
-
 </refsection>
 
 
@@ -700,7 +575,7 @@ $ nix-store -q --roots $(which svn)
 <!--######################################################################-->
 
 <!--
-<refsection xml:id="rsec-nix-store-reg-val"><title>Operation <option>-XXX-register-validity</option></title>
+<refsection id="rsec-nix-store-reg-val"><title>Operation <option>-XXX-register-validity</option></title>
 
 <refsection><title>Synopsis</title>
 
@@ -723,7 +598,37 @@ $ nix-store -q --roots $(which svn)
 
 <!--######################################################################-->
 
-<refsection xml:id='refsec-nix-store-verify'><title>Operation <option>--verify</option></title>
+<!--
+<refsection><title>Operation <option>-XXX-substitute</option></title>
+
+<refsection><title>Synopsis</title>
+
+<cmdsynopsis>
+  <command>nix-store</command>
+  <arg choice='plain'><option>-XXX-substitute</option></arg>
+  <arg choice='plain'
+       rep='repeat'><replaceable>srcpath</replaceable> <replaceable>subpath</replaceable></arg>
+</cmdsynopsis>
+</refsection>
+
+<refsection><title>Description</title>
+            
+<para>The operation <option>-XXX-substitute</option> registers that the
+store path <replaceable>srcpath</replaceable> can be built by
+realising the derivation expression in
+<replaceable>subpath</replaceable>.  This is used to implement binary
+deployment.</para>
+
+</refsection>
+            
+</refsection>
+-->
+
+
+
+<!--######################################################################-->
+
+<refsection><title>Operation <option>--verify</option></title>
 
 <refsection>
   <title>Synopsis</title>
@@ -764,301 +669,8 @@ in Nix itself.</para>
 
 </refsection>
             
-
 </refsection>
 
 
-<!--######################################################################-->
-
-<refsection xml:id='refsec-nix-store-dump'><title>Operation <option>--dump</option></title>
-
-<refsection>
-  <title>Synopsis</title>
-  <cmdsynopsis>
-    <command>nix-store</command>
-    <arg choice='plain'><option>--dump</option></arg>
-    <arg choice='plain'><replaceable>path</replaceable></arg>
-  </cmdsynopsis>
-</refsection>
-
-<refsection><title>Description</title>
-            
-<para>The operation <option>--dump</option> produces a NAR (Nix
-ARchive) file containing the contents of the file system tree rooted
-at <replaceable>path</replaceable>.  The archive is written to
-standard output.</para>
-
-<para>A NAR archive is like a TAR or Zip archive, but it contains only
-the information that Nix considers important.  For instance,
-timestamps are elided because all files in the Nix store have their
-timestamp set to 0 anyway.  Likewise, all permissions are left out
-except for the execute bit, because all files in the Nix store have
-644 or 755 permission.</para>
-
-<para>Also, a NAR archive is <emphasis>canonical</emphasis>, meaning
-that “equal” paths always produce the same NAR archive.  For instance,
-directory entries are always sorted so that the actual on-disk order
-doesn’t influence the result.  This means that the cryptographic hash
-of a NAR dump of a path is usable as a fingerprint of the contents of
-the path.  Indeed, the hashes of store paths stored in Nix’s database
-(see <link linkend="refsec-nix-store-query"><literal>nix-store -q
---hash</literal></link>) are SHA-256 hashes of the NAR dump of each
-store path.</para>
-
-<para>NAR archives support filenames of unlimited length and 64-bit
-file sizes.  They can contain regular files, directories, and symbolic
-links, but not other types of files (such as device nodes).</para>
-
-<para>A Nix archive can be unpacked using <literal>nix-store
---restore</literal>.</para>
-
-</refsection>
-            
-
-</refsection>
-
-
-<!--######################################################################-->
-
-<refsection><title>Operation <option>--restore</option></title>
-
-<refsection>
-  <title>Synopsis</title>
-  <cmdsynopsis>
-    <command>nix-store</command>
-    <arg choice='plain'><option>--restore</option></arg>
-    <arg choice='plain'><replaceable>path</replaceable></arg>
-  </cmdsynopsis>
-</refsection>
-
-<refsection><title>Description</title>
-            
-<para>The operation <option>--restore</option> unpacks a NAR archive
-to <replaceable>path</replaceable>, which must not already exist.  The
-archive is read from standard input.</para>
-
-</refsection>
-            
-
-</refsection>
-
-
-<!--######################################################################-->
-
-<refsection xml:id='refsec-nix-store-export'><title>Operation <option>--export</option></title>
-
-<refsection>
-  <title>Synopsis</title>
-  <cmdsynopsis>
-    <command>nix-store</command>
-    <arg choice='plain'><option>--export</option></arg>
-    <arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
-  </cmdsynopsis>
-</refsection>
-
-<refsection><title>Description</title>
-            
-<para>The operation <option>--export</option> writes a serialisation
-of the specified store paths to standard output in a format that can
-be imported into another Nix store with <command
-linkend="refsec-nix-store-import">nix-store --import</command>.  This
-is like <command linkend="refsec-nix-store-dump">nix-store
---dump</command>, except that the NAR archive produced by that command
-doesn’t contain the necessary meta-information to allow it to be
-imported into another Nix store (namely, the set of references of the
-path).</para>
-
-<para>This command does not produce a <emphasis>closure</emphasis> of
-the specified paths, so if a store path references other store paths
-that are missing in the target Nix store, the import will fail.  To
-copy a whole closure, do something like
-
-<screen>
-$ nix-store --export $(nix-store -qR <replaceable>paths</replaceable>) > out</screen>
-
-</para>
-
-<para>For an example of how <option>--export</option> and
-<option>--import</option> can be used, see the source of the <command
-linkend="sec-nix-copy-closure">nix-copy-closure</command>
-command.</para>
-
-</refsection>
-            
-
-</refsection>
-
-
-<!--######################################################################-->
-
-<refsection xml:id='refsec-nix-store-import'><title>Operation <option>--import</option></title>
-
-<refsection>
-  <title>Synopsis</title>
-  <cmdsynopsis>
-    <command>nix-store</command>
-    <arg choice='plain'><option>--import</option></arg>
-  </cmdsynopsis>
-</refsection>
-
-<refsection><title>Description</title>
-            
-<para>The operation <option>--export</option> reads a serialisation of
-a set of store paths produced by <command
-linkend="refsec-nix-store-export">nix-store --import</command> from
-standard input and adds those store paths to the Nix store.  Paths
-that already exist in the Nix store are ignored.  If a path refers to
-another path that doesn’t exist in the Nix store, the import
-fails.</para>
-
-</refsection>
-            
-
-</refsection>
-
-
-<!--######################################################################-->
-
-<refsection><title>Operation <option>--optimise</option></title>
-
-<refsection>
-  <title>Synopsis</title>
-  <cmdsynopsis>
-    <command>nix-store</command>
-    <arg choice='plain'><option>--optimise</option></arg>
-  </cmdsynopsis>
-</refsection>
-
-<refsection><title>Description</title>
-            
-<para>The operation <option>--optimise</option> reduces Nix store disk
-space usage by finding identical files in the store and hard-linking
-them to each other.  It typically reduces the size of the store by
-something like 25-35%.  Only regular files and symlinks are
-hard-linked in this manner.  Files are considered identical when they
-have the same NAR archive serialisation: that is, regular files must
-have the same contents and permission (executable or non-executable),
-and symlinks must have the same contents.</para>
-
-<para>After completion, or when the command is interrupted, a report
-on the achieved savings is printed on standard error.</para>
-
-<para>Use <option>-vv</option> or <option>-vvv</option> to get some
-progress indication.</para>
-
-</refsection>
-            
-<refsection><title>Example</title>
-
-<screen>
-$ nix-store --optimise
-hashing files in `/nix/store/qhqx7l2f1kmwihc9bnxs7rc159hsxnf3-gcc-4.1.1'
-<replaceable>...</replaceable>
-541838819 bytes (516.74 MiB) freed by hard-linking 54143 files;
-there are 114486 files with equal contents out of 215894 files in total
-</screen>
-
-</refsection>
-
-
-</refsection>
-
-
-<!--######################################################################-->
-
-<refsection><title>Operation <option>--read-log</option></title>
-
-<refsection>
-  <title>Synopsis</title>
-  <cmdsynopsis>
-    <command>nix-store</command>
-    <group choice='req'>
-      <arg choice='plain'><option>--read-log</option></arg>
-      <arg choice='plain'><option>-l</option></arg>
-    </group>
-    <arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
-  </cmdsynopsis>
-</refsection>
-
-<refsection><title>Description</title>
-            
-<para>The operation <option>--read-log</option> prints the build log
-of the specified store paths on standard output.  The build log is
-whatever the builder of a derivation wrote to standard output and
-standard error.  If a store path is not a derivation, the deriver of
-the store path is used.</para>
-
-<para>Build logs are kept in
-<filename>/nix/var/log/nix/drvs</filename>.  However, there is no
-guarantee that a build log is available for any particular store
-path.  For instance, if the path was downloaded as a pre-built binary
-through a substitute, then the log is unavailable.</para>
-
-</refsection>
-            
-<refsection><title>Example</title>
-
-<screen>
-$ nix-store -l $(which ktorrent)
-building /nix/store/dhc73pvzpnzxhdgpimsd9sw39di66ph1-ktorrent-2.2.1
-unpacking sources
-unpacking source archive /nix/store/p8n1jpqs27mgkjw07pb5269717nzf5f8-ktorrent-2.2.1.tar.gz
-ktorrent-2.2.1/
-ktorrent-2.2.1/NEWS
-<replaceable>...</replaceable>
-</screen>
-
-</refsection>
-
-
-</refsection>
-
-
-<!--######################################################################-->
-
-<refsection><title>Operation <option>--dump-db</option></title>
-
-<refsection>
-  <title>Synopsis</title>
-  <cmdsynopsis>
-    <command>nix-store</command>
-    <arg choice='plain'><option>--dump-db</option></arg>
-  </cmdsynopsis>
-</refsection>
-
-<refsection><title>Description</title>
-            
-<para>The operation <option>--dump-db</option> writes a dump of the
-Nix database to standard output.  It can be loaded into an empty Nix
-store using <option>--load-db</option>.  This is useful for making
-backups and when migrating to different database schemas.</para>
-
-</refsection>
-            
-</refsection>
-
-
-<!--######################################################################-->
-
-<refsection><title>Operation <option>--dump-db</option></title>
-
-<refsection>
-  <title>Synopsis</title>
-  <cmdsynopsis>
-    <command>nix-store</command>
-    <arg choice='plain'><option>--load-db</option></arg>
-  </cmdsynopsis>
-</refsection>
-
-<refsection><title>Description</title>
-            
-<para>The operation <option>--load-db</option> reads a dump of the Nix
-database created by <option>--dump-db</option> from standard input and
-loads it into the Nix database.</para>
-
-</refsection>
-            
-</refsection>
-
 
 </refentry>

doc/manual/nix-worker.xml

@@ -1,35 +0,0 @@
-<refentry xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          xmlns:xi="http://www.w3.org/2001/XInclude"
-          xml:id="sec-nix-worker">
-
-<refmeta>
-  <refentrytitle>nix-worker</refentrytitle>
-  <manvolnum>8</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
-<refnamediv>
-  <refname>nix-worker</refname>
-  <refpurpose>Nix multi-user support daemon</refpurpose>
-</refnamediv>
-
-<refsynopsisdiv>
-  <cmdsynopsis>
-    <command>nix-worker</command>
-    <arg choice="plain"><option>--daemon</option></arg>
-  </cmdsynopsis>
-</refsynopsisdiv>
-
-
-<refsection><title>Description</title>
-
-<para>The Nix daemon is necessary in multi-user Nix installations.  It
-performs build actions and other operations on the Nix store on behalf
-of unprivileged users.</para>
-
-
-</refsection>
-
-</refentry>

doc/manual/opt-common-syn.xml

@@ -1,4 +1,4 @@
-<nop xmlns="http://docbook.org/ns/docbook">
+<nop>
   
 <arg><option>--help</option></arg>
 <arg><option>--version</option></arg>
@@ -13,14 +13,6 @@
   </group>
   <replaceable>number</replaceable>
 </arg>
-<arg>
-  <arg><option>--cores</option></arg>
-  <replaceable>number</replaceable>
-</arg>
-<arg>
-  <arg><option>--max-silent-time</option></arg>
-  <replaceable>number</replaceable>
-</arg>
 <arg><option>--keep-going</option></arg>
 <arg><option>-k</option></arg>
 <arg><option>--keep-failed</option></arg>
@@ -28,7 +20,5 @@
 <arg><option>--fallback</option></arg>
 <arg><option>--readonly-mode</option></arg>
 <arg><option>--log-type</option> <replaceable>type</replaceable></arg>
-<arg><option>--show-trace</option></arg>
-<sbr />
 
 </nop>

doc/manual/opt-common.xml

@@ -1,7 +1,4 @@
-<section xmlns="http://docbook.org/ns/docbook" xml:id="sec-common-options">
-
-<title>Common options</title>
-
+<sect1 id="sec-common-options"><title>Common options</title>
 
 <para>Most Nix commands accept the following command-line options:</para>
 
@@ -89,49 +86,16 @@
 </varlistentry>
 
 
-<varlistentry xml:id="opt-max-jobs"><term><option>--max-jobs</option></term>
+<varlistentry id="opt-max-jobs"><term><option>--max-jobs</option></term>
   <term><option>-j</option></term>
 
   <listitem><para>Sets the maximum number of build jobs that Nix will
-  perform in parallel to the specified number.  The default is
-  specified by the <link
-  linkend='conf-build-max-jobs'><literal>build-max-jobs</literal></link>
-  configuration setting, which itself defaults to
-  <literal>1</literal>.  A higher value is useful on SMP systems or to
-  exploit I/O latency.</para></listitem>
+  perform in parallel to the specified number.  The default is 1.  A
+  higher value is useful on SMP systems or to exploit I/O latency.</para></listitem>
   
 </varlistentry>
 
 
-<varlistentry xml:id="opt-cores"><term><option>--cores</option></term>
-
-  <listitem><para>Sets the value of the <envar>NIX_BUILD_CORES</envar>
-  environment variable in the invocation of builders.  Builders can
-  use this variable at their discretion to control the maximum amount
-  of parallelism.  For instance, in Nixpkgs, if the derivation
-  attribute <varname>enableParallelBuilding</varname> is set to
-  <literal>true</literal>, the builder passes the
-  <option>-j<replaceable>N</replaceable></option> flag to GNU Make.
-  It defaults to the value of the <link
-  linkend='conf-build-cores'><literal>build-cores</literal></link>
-  configuration setting, if set, or <literal>1</literal> otherwise.
-  The value <literal>0</literal> means that the builder should use all
-  available CPU cores in the system.</para></listitem>
-  
-</varlistentry>
-
-
-<varlistentry xml:id="opt-max-silent-time"><term><option>--max-silent-time</option></term>
-
-  <listitem><para>Sets the maximum number of seconds that a builder
-  can go without producing any data on standard output or standard
-  error.  The default is specified by the <link
-  linkend='conf-build-max-silent-time'><literal>build-max-silent-time</literal></link>
-  configuration setting.  <literal>0</literal> means no
-  time-out.</para></listitem>
-
-</varlistentry>
-
 <varlistentry><term><option>--keep-going</option></term>
   <term><option>-k</option></term>
 
@@ -191,7 +155,7 @@
 </varlistentry>
 
 
-<varlistentry xml:id="opt-log-type"><term><option>--log-type</option>
+<varlistentry id="opt-log-type"><term><option>--log-type</option>
 <replaceable>type</replaceable></term>
 
   <listitem>
@@ -223,9 +187,9 @@
     <varlistentry><term><literal>escapes</literal></term>
 
       <listitem><para>Indicate nesting using escape codes that can be
-      interpreted by the <command>nix-log2xml</command> tool in the
-      Nix source distribution.  The resulting XML file can be fed into
-      the <command>log2html.xsl</command> stylesheet to create an HTML
+      interpreted by the <command>log2xml</command> tool in the Nix
+      source distribution.  The resulting XML file can be fed into the
+      <command>log2html.xsl</command> stylesheet to create an HTML
       file that can be browsed interactively, using Javascript to
       expand and collapse parts of the output.</para></listitem>
 
@@ -246,92 +210,7 @@
 </varlistentry>
 
 
-<varlistentry><term><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></term>
-
-  <listitem><para>This option is accepted by
-  <command>nix-env</command>, <command>nix-instantiate</command> and
-  <command>nix-build</command>.  When evaluating Nix expressions, the
-  expression evaluator will automatically try to call functions that
-  it encounters.  It can automatically call functions for which every
-  argument has a <link linkend='ss-functions'>default value</link>
-  (e.g., <literal>{<replaceable>argName</replaceable> ?
-  <replaceable>defaultValue</replaceable>}:
-  <replaceable>...</replaceable></literal>).  With
-  <option>--arg</option>, you can also call functions that have
-  arguments without a default value (or override a default value).
-  That is, if the evaluator encounters a function with an argument
-  named <replaceable>name</replaceable>, it will call it with value
-  <replaceable>value</replaceable>.</para>
-
-  <para>For instance, the file
-  <literal>pkgs/top-level/all-packages.nix</literal> in Nixpkgs is
-  actually a function:
-
-<programlisting>
-{ # The system (e.g., `i686-linux') for which to build the packages.
-  system ? builtins.currentSystem
-  <replaceable>...</replaceable>
-}: <replaceable>...</replaceable></programlisting>
-
-  So if you call this Nix expression (e.g., when you do
-  <literal>nix-env -i <replaceable>pkgname</replaceable></literal>),
-  the function will be called automatically using the value <link
-  linkend='builtin-currentSystem'><literal>builtins.currentSystem</literal></link>
-  for the <literal>system</literal> argument.  You can override this
-  using <option>--arg</option>, e.g., <literal>nix-env -i
-  <replaceable>pkgname</replaceable> --arg system
-  \"i686-freebsd\"</literal>.  (Note that since the argument is a Nix
-  string literal, you have to escape the quotes.)</para></listitem>
-
-</varlistentry>
-
-
-<varlistentry><term><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></term>
-
-  <listitem><para>This option is like <option>--arg</option>, only the
-  value is not a Nix expression but a string.  So instead of
-  <literal>--arg system \"i686-linux\"</literal> (the outer quotes are
-  to keep the shell happy) you can say <literal>--argstr system
-  i686-linux</literal>.</para></listitem>
-
-</varlistentry>
-
-
-<varlistentry xml:id="opt-attr"><term><option>--attr</option> / <option>-A</option>
-<replaceable>attrPath</replaceable></term>
-
-  <listitem><para>In <command>nix-env</command>,
-  <command>nix-instantiate</command> and <command>nix-build</command>,
-  <option>--attr</option> allows you to select an attribute from the
-  top-level Nix expression being evaluated.  The <emphasis>attribute
-  path</emphasis> <replaceable>attrPath</replaceable> is a sequence of
-  attribute names separated by dots.  For instance, given a top-level
-  Nix expression <replaceable>e</replaceable>, the attribute path
-  <literal>xorg.xorgserver</literal> would cause the expression
-  <literal><replaceable>e</replaceable>.xorg.xorgserver</literal> to
-  be used.  See <link
-  linkend='refsec-nix-env-install-examples'><command>nix-env
-  --install</command></link> for some concrete examples.</para>
-
-  <para>In addition to attribute names, you can also specify array
-  indices.  For instance, the attribute path
-  <literal>foo.3.bar</literal> selects the <literal>bar</literal>
-  attribute of the fourth element of the array in the
-  <literal>foo</literal> attribute of the top-level
-  expression.</para></listitem>
-
-</varlistentry>
-
-
-<varlistentry><term><option>--show-trace</option></term>
-  
-  <listitem><para>Causes Nix to print out a stack trace in case of Nix
-  expression evaluation errors.</para></listitem>
-  
-</varlistentry>
-
-
 </variablelist>
 
 
-</section>
+</sect1>

doc/manual/opt-inst-syn.xml

@@ -1,22 +0,0 @@
-<nop xmlns="http://docbook.org/ns/docbook">
-  
-  <arg>
-    <group choice='req'>
-      <arg choice='plain'><option>--prebuilt-only</option></arg>
-      <arg choice='plain'><option>-b</option></arg>
-    </group>
-  </arg>
-  
-  <arg>
-    <group choice='req'>
-      <arg choice='plain'><option>--attr</option></arg>
-      <arg choice='plain'><option>-A</option></arg>
-    </group>
-  </arg>
-
-  <arg><option>--from-expression</option></arg>
-  <arg><option>-E</option></arg>
-    
-  <arg><option>--from-profile</option> <replaceable>path</replaceable></arg>
-
-</nop>

doc/manual/package-management.xml

@@ -1,23 +1,18 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xml:id='chap-package-management'>
-
-<title>Package Management</title>
-
+<chapter id='chap-package-management'><title>Package Management</title>
 
 <para>This chapter discusses how to do package management with Nix,
-i.e., how to obtain, install, upgrade, and erase packages.  This is
+i.e., how to obtain, install, upgrade, and erase components.  This is
 the “user’s” perspective of the Nix system — people
-who want to <emphasis>create</emphasis> packages should consult
+who want to <emphasis>create</emphasis> components should consult
 <xref linkend='chap-writing-nix-expressions' />.</para>
 
 
-<section><title>Basic package management</title>
+<sect1><title>Basic package management</title>
 
 <para>The main command for package management is <link
 linkend="sec-nix-env"><command>nix-env</command></link>.  You can use
-it to install, upgrade, and erase packages, and to query what
-packages are installed or are available for installation.</para>
+it to install, upgrade, and erase components, and to query what
+components are installed or are available for installation.</para>
 
 <para>In Nix, different users can have different “views”
 on the set of installed applications.  That is, there might be lots of
@@ -30,21 +25,21 @@ environment</emphasis>, which is just a directory tree consisting of
 symlinks to the files of the active applications.  </para>
 
 <para>Components are installed from a set of <emphasis>Nix
-expressions</emphasis> that tell Nix how to build those packages,
+expressions</emphasis> that tell Nix how to build those components,
 including, if necessary, their dependencies.  There is a collection of
 Nix expressions called the Nix Package collection that contains
-packages ranging from basic development stuff such as GCC and Glibc,
+components ranging from basic development stuff such as GCC and Glibc,
 to end-user applications like Mozilla Firefox.  (Nix is however not
 tied to the Nix Package collection; you could write your own Nix
 expressions based on it, or completely new ones.)  You can download
-the latest version from <link
-xlink:href='http://nixos.org/nixpkgs/download.html' />.</para>
+the latest version from <ulink
+url='http://catamaran.labs.cs.uu.nl/dist/nix' />.</para>
 
 <para>Assuming that you have downloaded and unpacked a release of Nix
-Packages, you can view the set of available packages in the release:
+Packages, you can view the set of available components in the release:
 
 <screen>
-$ nix-env -qaf nixpkgs-<replaceable>version</replaceable> '*'
+$ nix-env -qaf nixpkgs-<replaceable>version</replaceable>
 ant-blackdown-1.4.2
 aterm-2.2
 bash-3.0
@@ -55,30 +50,14 @@ bzip2-1.0.2
 ...</screen>
 
 where <literal>nixpkgs-<replaceable>version</replaceable></literal> is
-where you’ve unpacked the release.  The flag <option>-q</option>
-specifies a query operation; <option>-a</option> means that you want
-to show the “available” (i.e., installable) packages, as opposed to
-the installed packages; and <option>-f</option>
-<filename>nixpkgs-<replaceable>version</replaceable></filename>
-specifies the source of the packages.  The argument
-<literal>'*'</literal> shows all installable packages. (The quotes are
-necessary to prevent shell expansion.)  You can also select specific
-packages by name:
-
-<screen>
-$ nix-env -qaf nixpkgs-<replaceable>version</replaceable> gcc
-gcc-3.4.6
-gcc-4.0.3
-gcc-4.1.1</screen>
-
-</para>
+where you’ve unpacked the release.</para>
 
 <para>It is also possible to see the <emphasis>status</emphasis> of
-available packages, i.e., whether they are installed into the user
+available components, i.e., whether they are installed into the user
 environment and/or present in the system:
 
 <screen>
-$ nix-env -qasf nixpkgs-<replaceable>version</replaceable> '*'
+$ nix-env -qasf nixpkgs-<replaceable>version</replaceable>
 ...
 -PS bash-3.0
 --S binutils-2.15
@@ -86,48 +65,49 @@ IPS bison-1.875d
 ...</screen>
 
 The first character (<literal>I</literal>) indicates whether the
-package is installed in your current user environment.  The second
+component is installed in your current user environment.  The second
 (<literal>P</literal>) indicates whether it is present on your system
 (in which case installing it into your user environment would be a
 very quick operation).  The last one (<literal>S</literal>) indicates
 whether there is a so-called <emphasis>substitute</emphasis> for the
-package, which is Nix’s mechanism for doing binary deployment.  It
-just means that Nix knows that it can fetch a pre-built package from
+component, which is Nix’s mechanism for doing binary deployment.  It
+just means that Nix know that it can fetch a pre-built component from
 somewhere (typically a network server) instead of building it
 locally.</para>
 
 <para>So now that we have a set of Nix expressions we can build the
-packages contained in them.  This is done using <literal>nix-env
+components contained in them.  This is done using <literal>nix-env
 -i</literal>.  For instance,
 
 <screen>
 $ nix-env -f nixpkgs-<replaceable>version</replaceable> -i subversion</screen>
 
-will install the package called <literal>subversion</literal> (which
-is, of course, the <link
-xlink:href='http://subversion.tigris.org/'>Subversion version
-management system</link>).</para>
+will install the component called <literal>subversion</literal> (which
+is, of course, the <ulink
+url='http://subversion.tigris.org/'>Subversion version management
+system</ulink>).</para>
 
 <para>When you do this for the first time, Nix will start building
 Subversion and all its dependencies.  This will take quite a while —
 typically an hour or two on modern machines.  Fortunately, there is a
 faster way (so do a Ctrl-C on that install operation!): you just need
-to tell Nix that pre-built binaries of all those packages are
+to tell Nix that pre-built binaries of all those components are
 available somewhere.  This is done using the
 <command>nix-pull</command> command, which must be supplied with a URL
 containing a <emphasis>manifest</emphasis> describing what binaries
 are available.  This URL should correspond to the Nix Packages release
-that you’re using.  For instance, if you obtained a release from <link
-xlink:href='http://nixos.org/releases/nixpkgs/nixpkgs-0.12pre11712-4lrp7j8x'
-/>, then you should do:
+that you’re using.  For instance, if you obtained a release from
+<ulink
+url='http://catamaran.labs.cs.uu.nl/dist/nix/nixpkgs-0.6pre1554/' />,
+then you should do:
 
 <screen>
-$ nix-pull http://nixos.org/releases/nixpkgs/nixpkgs-0.12pre11712-4lrp7j8x/MANIFEST</screen>
+$ nix-pull http://catamaran.labs.cs.uu.nl/dist/nix/nixpkgs-0.6pre1554/MANIFEST</screen>
 
 If you then issue the installation command, it should start
 downloading binaries from <systemitem
-class='fqdomainname'>nixos.org</systemitem>, instead of building
-them from source.  This might still take a while since all
+class='fqdomainname'>catamaran.labs.cs.uu.nl</systemitem>, instead of
+building them from source.  This might still take a while since all
 dependencies must be downloaded, but on a reasonably fast connection
 such as an DSL line it’s on the order of a few minutes.</para>
 
@@ -153,7 +133,7 @@ expressions, use <parameter>-i</parameter> instead of
 <parameter>-u</parameter>; <parameter>-i</parameter> will remove
 whatever version is already installed.</para>
 
-<para>You can also upgrade all packages for which there are newer
+<para>You can also upgrade all components for which there are newer
 versions:
 
 <screen>
@@ -190,33 +170,33 @@ since <literal>nix-channel --update</literal> calls <literal>nix-env
 from the channel, replacing whatever default you had
 set.</para></footnote></para>
 
-</section>
+</sect1>
 
 
-<section xml:id="sec-profiles"><title>Profiles</title>
+<sect1 id="sec-profiles"><title>Profiles</title>
 
 <para>Profiles and user environments are Nix’s mechanism for
-implementing the ability to allow different users to have different
+implementing the ability to allow differens users to have different
 configurations, and to do atomic upgrades and rollbacks.  To
 understand how they work, it’s useful to know a bit about how Nix
-works.  In Nix, packages are stored in unique locations in the
+works.  In Nix, components are stored in unique locations in the
 <emphasis>Nix store</emphasis> (typically,
 <filename>/nix/store</filename>).  For instance, a particular version
-of the Subversion package might be stored in a directory
+of the Subversion component might be stored in a directory
 <filename>/nix/store/dpmvp969yhdqs7lm2r1a3gng7pyq6vy4-subversion-1.1.3/</filename>,
 while another version might be stored in
 <filename>/nix/store/5mq2jcn36ldlmh93yj1n8s9c95pj7c5s-subversion-1.1.2</filename>.
 The long strings prefixed to the directory names are cryptographic
 hashes<footnote><para>160-bit truncations of SHA-256 hashes encoded in
 a base-32 notation, to be precise.</para></footnote> of
-<emphasis>all</emphasis> inputs involved in building the package —
+<emphasis>all</emphasis> inputs involved in building the component —
 sources, dependencies, compiler flags, and so on.  So if two
-packages differ in any way, they end up in different locations in
+components differ in any way, they end up in different locations in
 the file system, so they don’t interfere with each other.  <xref
 linkend='fig-user-environments' /> shows a part of a typical Nix
 store.</para>
 
-<figure xml:id='fig-user-environments'><title>User environments</title>
+<figure id='fig-user-environments'><title>User environments</title>
   <mediaobject>
     <imageobject>
       <imagedata fileref='figures/user-environments.png' format='PNG' />
@@ -231,12 +211,12 @@ $ /nix/store/dpmvp969yhdq...-subversion-1.1.3/bin/svn</screen>
 
 every time you want to run Subversion.  Of course we could set up the
 <envar>PATH</envar> environment variable to include the
-<filename>bin</filename> directory of every package we want to use,
+<filename>bin</filename> directory of every component we want to use,
 but this is not very convenient since changing <envar>PATH</envar>
 doesn’t take effect for already existing processes.  The solution Nix
 uses is to create directory trees of symlinks to
-<emphasis>activated</emphasis> packages.  These are called
-<emphasis>user environments</emphasis> and they are packages
+<emphasis>activated</emphasis> components.  These are called
+<emphasis>user environments</emphasis> and they are components
 themselves (though automatically generated by
 <command>nix-env</command>), so they too reside in the Nix store.  For
 instance, in <xref linkend='fig-user-environments' /> the user
@@ -285,8 +265,8 @@ operation, a new user environment and generation link are created
 based on the current one, and finally the <filename>default</filename>
 symlink is made to point at the new generation.  This last step is
 atomic on Unix, which explains how we can do atomic upgrades.  (Note
-that the building/installing of new packages doesn’t interfere in
-any way with old packages, since they are stored in different
+that the building/installing of new components doesn’t interfere in
+any way with old components, since they are stored in different
 locations in the Nix store.)</para>
 
 <para>If you find that you want to undo a <command>nix-env</command>
@@ -331,7 +311,7 @@ default profile, respectively.  If the profile doesn’t exist, it will
 be created automatically.  You should be careful about storing a
 profile in another location than the <filename>profiles</filename>
 directory, since otherwise it might not be used as a root of the
-garbage collector (see <xref linkend='sec-garbage-collection'
+garbage collector (see section <xref linkend='sec-garbage-collection'
 />).</para>
 
 <para>All <command>nix-env</command> operations work on the profile
@@ -345,25 +325,25 @@ $ nix-env -p /nix/var/nix/profiles/other-profile -i subversion</screen>
 This will <emphasis>not</emphasis> change the
 <command>~/.nix-profile</command> symlink.</para>
 
-</section>
+</sect1>
 
 
-<section xml:id='sec-garbage-collection'><title>Garbage collection</title>
+<sect1 id='sec-garbage-collection'><title>Garbage collection</title>
 
 <para><command>nix-env</command> operations such as upgrades
 (<option>-u</option>) and uninstall (<option>-e</option>) never
-actually delete packages from the system.  All they do (as shown
+actually delete components from the system.  All they do (as shown
 above) is to create a new user environment that no longer contains
-symlinks to the “deleted” packages.</para>
+symlinks to the “deleted” components.</para>
 
-<para>Of course, since disk space is not infinite, unused packages
+<para>Of course, since disk space is not infinite, unused components
 should be removed at some point.  You can do this by running the Nix
-garbage collector.  It will remove from the Nix store any package
+garbage collector.  It will remove from the Nix store any component
 not used (directly or indirectly) by any generation of any
 profile.</para>
 
 <para>Note however that as long as old generations reference a
-package, it will not be deleted.  After all, we wouldn’t be able to
+component, it will not be deleted.  After all, we wouldn’t be able to
 do a rollback otherwise.  So in order for garbage collection to be
 effective, you should also delete (some) old generations.  Of course,
 this should only be done if you are certain that you will not need to
@@ -398,21 +378,8 @@ $ nix-store --gc --print-dead</screen>
 Likewise, the option <option>--print-live</option> will show the paths
 that <emphasis>won’t</emphasis> be deleted.</para>
 
-<para>There is also a convenient little utility
-<command>nix-collect-garbage</command>, which when invoked with the
-<option>-d</option> (<option>--delete-old</option>) switch deletes all
-old generations of all profiles in
-<filename>/nix/var/nix/profiles</filename>.  So
 
-<screen>
-$ nix-collect-garbage -d</screen>
-
-is a quick and easy way to clean up your system.</para>
-
-
-
-
-<section xml:id="ssec-gc-roots"><title>Garbage collector roots</title>
+<sect2 id="ssec-gc-roots"><title>Garbage collector roots</title>
 
 <para>The roots of the garbage collector are all store paths to which
 there are symlinks in the directory
@@ -434,12 +401,12 @@ followed and searched for roots, but symlinks to non-store paths
 <emphasis>inside</emphasis> the paths reached in that way are not
 followed to prevent infinite recursion.</para>
 
-</section>
+</sect2>
 
-</section>
+</sect1>
 
 
-<section xml:id="sec-channels"><title>Channels</title>
+<sect1 id="sec-channels"><title>Channels</title>
 
 <para>If you want to stay up to date with a set of packages, it’s not
 very convenient to manually download the latest set of Nix expressions
@@ -458,7 +425,7 @@ URL.</para>
 <command>nix-channel --add</command>, e.g.,
 
 <screen>
-$ nix-channel --add http://nixos.org/releases/nixpkgs/channels/nixpkgs-unstable</screen>
+$ nix-channel --add http://catamaran.labs.cs.uu.nl/dist/nix/channels/nixpkgs-unstable</screen>
 
 subscribes you to a channel that always contains that latest version
 of the Nix Packages collection.  (Instead of
@@ -486,121 +453,10 @@ makes the union of each channel’s Nix expressions the default for
 <screen>
 $ nix-env -u '*'</screen>
 
-to upgrade all packages in your profile to the latest versions
+to upgrade all components in your profile to the latest versions
 available in the subscribed channels.</para>
 
-</section>
-
-
-<section xml:id="sec-one-click"><title>One-click installs</title>
-
-<para>Often, when you want to install a specific package (e.g., from
-the <link
-xlink:href="http://nixos.org/nixpkgs/">Nix
-Packages collection</link>), subscribing to a channel is a bit
-cumbersome.  And channels don’t help you at all if you want to install
-an older version of a package than the one provided by the current
-contents of the channel, or a package that has been removed from the
-channel.  That’s when <emphasis>one-click installs</emphasis> come in
-handy: you can just go to the web page that contains the package,
-click on it, and it will be installed with all the necessary
-dependencies.</para>
-
-<para>For instance, you can go to <link
-xlink:href="http://hydra.nixos.org/jobset/nixpkgs/trunk/channel/latest"
-/> and click on any link for the individual packages for your
-platform.  The first time you do this, your browser will ask what to
-do with <literal>application/nix-package</literal> files.  You should
-open them with <filename>/nix/bin/nix-install-package</filename>.
-This will open a window that asks you to confirm that you want to
-install the package.  When you answer <literal>Y</literal>, the
-package and all its dependencies will be installed.  This is a binary
-deployment mechanism — you get packages pre-compiled for the selected
-platform type.</para>
-
-<para>You can also install <literal>application/nix-package</literal>
-files from the command line directly.  See <xref
-linkend='sec-nix-install-package' /> for details.</para>
-
-</section>
-
-
-<section xml:id="sec-sharing-packages"><title>Sharing packages between machines</title>
-
-<para>Sometimes you want to copy a package from one machine to
-another.  Or, you want to install some packages and you know that
-another machine already has some or all of those packages or their
-dependencies.  In that case there are mechanisms to quickly copy
-packages between machines.</para>
-
-<para>The command <command
-linkend="sec-nix-copy-closure">nix-copy-closure</command> copies a Nix
-store path along with all its dependencies to or from another machine
-via the SSH protocol.  It doesn’t copy store paths that are already
-present on the target machine.  For example, the following command
-copies Firefox with all its dependencies:
-
-<screen>
-$ nix-copy-closure --to alice@itchy.example.org $(type -p firefox)</screen>
-
-See <xref linkend='sec-nix-copy-closure' /> for details.</para>
-
-<para>With <command linkend='refsec-nix-store-export'>nix-store
---export</command> and <command
-linkend='refsec-nix-store-import'>nix-store --import</command> you can
-write the closure of a store path (that is, the path and all its
-dependencies) to a file, and then unpack that file into another Nix
-store.  For example,
-
-<screen>
-$ nix-store --export $(type -p firefox) > firefox.closure</screen>
-
-writes the closure of Firefox to a file.  You can then copy this file
-to another machine and install the closure:
-
-<screen>
-$ nix-store --import &lt; firefox.closure</screen>
-
-Any store paths in the closure that are already present in the target
-store are ignored.  It is also possible to pipe the export into
-another command, e.g. to copy and install a closure directly to/on
-another machine:
-
-<screen>
-$ nix-store --export $(type -p firefox) | bzip2 | \
-    ssh alice@itchy.example.org "bunzip2 | nix-store --import"</screen>
-
-But note that <command>nix-copy-closure</command> is generally more
-efficient in this example because it only copies paths that are not
-already present in the target Nix store.</para>
-
-<para>Finally, if you can mount the Nix store of a remote machine in
-your local filesystem, Nix can copy paths from the remote Nix store to
-the local Nix store <emphasis>on demand</emphasis>.  For instance,
-suppose that you mount a remote machine containing a Nix store via
-<command
-xlink:href="http://fuse.sourceforge.net/sshfs.html">sshfs</command>:
-
-<screen>
-$ sshfs alice@itchy.example.org:/ /mnt</screen>
-
-You should then set the <envar>NIX_OTHER_STORES</envar> environment
-variable to tell Nix about this remote Nix store:
-
-<screen>
-$ export NIX_OTHER_STORES=/mnt/nix</screen>
-
-Then if you do any Nix operation, e.g.
-
-<screen>
-$ nix-env -i firefox</screen>
-
-and Nix has to build a path that it sees is already present in
-<filename>/mnt/nix</filename>, then it will just copy from there
-instead of building it from source.</para>
- 
-
-</section>
+</sect1>
 
 
 </chapter>

doc/manual/quick-start.xml

@@ -1,9 +1,4 @@
-<chapter xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xml:id="chap-quick-start">
-
-<title>Quick Start</title>
-
+<chapter><title>Quick Start</title>
 
 <para>This chapter is for impatient people who don't like reading
 documentation.  For more in-depth information you are kindly referred
@@ -11,9 +6,9 @@ to the following chapters.</para>
 
 <orderedlist>
 
-<listitem><para>Download a source tarball, RPM or Deb from <link
-xlink:href='http://nixos.org/'/>.  Build source distributions using
-the regular sequence:
+<listitem><para>Download a source tarball or RPM from <ulink
+url='http://www.cs.uu.nl/groups/ST/Trace/Nix'/>.  Build source
+distributions using the regular sequence:
         
 <screen>
 $ tar xvfj nix-<replaceable>version</replaceable>.tar.bz2
@@ -21,28 +16,18 @@ $ ./configure
 $ make
 $ make install <lineannotation>(as root)</lineannotation></screen>
 
-This will install the Nix binaries in <filename>/usr/local</filename>
-and keep the Nix store and other state in <filename>/nix</filename>.
-You can change the former by specifying
-<option>--prefix=<replaceable>path</replaceable></option>.  The
-location of the store can be changed using
-<option>--with-store-dir=<replaceable>path</replaceable></option>.
-However, you shouldn't change the store location, if at all possible,
-since that will make it impossible to use pre-built binaries from the
-Nixpkgs channel and other channels.  The location of the state can be
-changed using
-<option>--localstatedir=<replaceable>path</replaceable>.</option></para></listitem>
-
-<listitem><para>You should add
-<filename><replaceable>prefix</replaceable>/etc/profile.d/nix.sh</filename>
-to your <filename>~/.bashrc</filename> (or some other login
+This will install Nix in <filename>/nix</filename>.  You shouldn't
+change the prefix if at all possible since that will make it
+impossible to use our pre-built components.  Alternatively, you could
+grab an RPM if you're on an RPM-based system.  You should also add
+<filename>/nix/etc/profile.d/nix.sh</filename> to your
+<filename>~/.bashrc</filename> (or some other login
 file).</para></listitem>
 
 <listitem><para>Subscribe to the Nix Packages channel.
 
 <screen>
-$ nix-channel --add \
-    http://nixos.org/releases/nixpkgs/channels/nixpkgs-unstable</screen>
+$ nix-channel --add http://catamaran.labs.cs.uu.nl/dist/nix/channels/nixpkgs-unstable</screen>
 
 </para></listitem>
 
@@ -50,17 +35,17 @@ $ nix-channel --add \
 <screen>
 $ nix-channel --update</screen>
 
-Note that this in itself doesn't download any packages, it just
+Note that this in itself doesn't download any components, it just
 downloads the Nix expressions that build them and stores them
 somewhere (under <filename>~/.nix-defexpr</filename>, in case you're
 curious).  Also, it registers the fact that pre-built binaries are
 available remotely.</para></listitem>
 
-<listitem><para>See what installable packages are currently available
-in the channel:
+<listitem><para>See what installable components are currently
+available in the channel:
 
 <screen>
-$ nix-env -qa ’*’ <lineannotation>(mind the quotes!)</lineannotation>
+$ nix-env -qa
 docbook-xml-4.2
 firefox-1.0pre-PR-0.10.1
 hello-2.1.1
@@ -69,13 +54,13 @@ libxslt-1.1.0
 
 </para></listitem>
 
-<listitem><para>Install some packages from the channel:
+<listitem><para>Install some components from the channel:
         
 <screen>
 $ nix-env -i hello firefox <replaceable>...</replaceable> </screen>
 
-This should download pre-built packages; it should not build them
-locally (if it does, something went wrong).</para></listitem>
+This should download the pre-built components; it should not build
+them locally (if it does, something went wrong).</para></listitem>
 
 <listitem><para>Test that they work:
 
@@ -102,22 +87,12 @@ $ nix-env -e hello</screen>
 $ nix-channel --update
 $ nix-env -u '*'</screen>
 
-The latter command will upgrade each installed package for which there
-is a “newer” version (as determined by comparing the version
+The latter command will upgrade each installed component for which
+there is a “newer” version (as determined by comparing the version
 numbers).</para></listitem>
 
-<listitem><para>You can also install specific packages directly from
-your web browser.  For instance, you can go to <link
-xlink:href="http://hydra.nixos.org/jobset/nixpkgs/trunk/channel/latest" />
-and click on any link for the individual packages for your platform.
-Associate <literal>application/nix-package</literal> with the program
-<filename>/nix/bin/nix-install-package</filename>.  A window should
-appear asking you whether it’s okay to install the package.  Say
-<literal>Y</literal>.  The package and all its dependencies will be
-installed.</para></listitem>
-
 <listitem><para>If you're unhappy with the result of a
-<command>nix-env</command> action (e.g., an upgraded package turned
+<command>nix-env</command> action (e.g., an upgraded component turned
 out not to work properly), you can go back:
 
 <screen>
@@ -130,15 +105,13 @@ to get rid of unused packages, since uninstalls or upgrades don't
 actually delete them:
 
 <screen>
-$ nix-collect-garbage -d</screen>
+$ nix-env --delete-generations old
+$ nix-store --gc</screen>
 
-<!--
 The first command deletes old “generations” of your profile (making
-rollbacks impossible, but also making the packages in those old
+rollbacks impossible, but also making the components in those old
 generations available for garbage collection), while the second
-command actually deletes them.-->
-
-</para></listitem>
+command actually deletes them.</para></listitem>
 
 </orderedlist>
 

doc/manual/quote-literals.xsl

@@ -1,44 +0,0 @@
-<?xml version="1.0"?>
-
-<xsl:stylesheet
-  version="1.0"
-  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-  xmlns:str="http://exslt.org/strings"
-  extension-element-prefixes="str">
-
-  <xsl:output method="xml"/>
-  
-  <xsl:template match="function|command|literal|varname|filename|option|quote">`<xsl:apply-templates/>'</xsl:template>
-  
-  <xsl:template match="token"><xsl:text>    </xsl:text><xsl:apply-templates /><xsl:text>
-</xsl:text></xsl:template>
-
-  <xsl:template match="screen|programlisting">
-    <screen><xsl:apply-templates select="str:split(., '&#xA;')" /></screen>
-  </xsl:template>
-
-  <xsl:template match="section[following::section]">
-    <section>
-      <xsl:apply-templates />
-      <screen><xsl:text>
-      </xsl:text></screen>        
-    </section>
-  </xsl:template>
-
-  <xsl:template match="*">
-    <xsl:element name="{name(.)}" namespace="{namespace-uri(.)}">
-      <xsl:copy-of select="namespace::*" />
-      <xsl:for-each select="@*">
-	<xsl:attribute name="{name(.)}" namespace="{namespace-uri(.)}">
-	  <xsl:value-of select="."/>
-	</xsl:attribute>
-      </xsl:for-each>
-      <xsl:apply-templates/>
-    </xsl:element>
-  </xsl:template>
-
-  <xsl:template match="text()">
-    <xsl:value-of select="translate(., '‘’“”—', concat(&quot;`'&quot;, '&quot;&quot;-'))" />
-  </xsl:template>
-  
-</xsl:stylesheet>

doc/manual/style.css

@@ -10,6 +10,7 @@ body
 {
     font-family: sans-serif;
     background: white;
+  
     margin: 2em 1em 2em 1em;
 }
 
@@ -33,33 +34,16 @@ h2 /* chapters, appendices, subtitle */
 div.chapter > div.titlepage h2, div.appendix > div.titlepage h2 
 { 
     margin-top: 1.5em;
+/*    border-top: solid #005aa0; */
 }
 
-div.section > div.titlepage h2 /* sections */
+div.sect1 h2 /* sections */
 {
     font-size: 150%;
-    margin-top: 1.5em;
-}
-
-h3 /* subsections */
-{
-    font-size: 125%;
-}
-
-div.simplesect h2
-{
-    font-size: 110%;
-}
-
-div.appendix h3
-{
-    font-size: 150%;
-    margin-top: 1.5em;
 }
 
 div.refnamediv h2, div.refsynopsisdiv h2, div.refsection h2 /* refentry parts */
 {
-    margin-top: 1.4em;
     font-size: 125%;
 }
 
@@ -68,23 +52,30 @@ div.refsection h3
     font-size: 110%;
 }
 
+h3 /* subsections */
+{
+    font-size: 125%;
+}
+
+
 
 /***************************************************************************
-                               Examples:
+                               Program listings:
  ***************************************************************************/
 
 div.example
 {
     border: 1px solid #6185a0;
     padding: 6px 6px;
-    margin-left: 1.5em;
-    margin-right: 1.5em;
-    background: #f4f4f8;
+    margin-left: 3em;
+    margin-right: 3em;
+    background: #eeeeee;
 }
 
-div.example p.title
+pre.programlisting
 {
-    margin-top: 0em;
+    color: #600000;
+    font-family: monospace;
 }
 
 
@@ -92,63 +83,41 @@ div.example p.title
                             Screen dumps:
  ***************************************************************************/
 
-pre.screen, pre.programlisting
+pre.screen
 {
     border: 1px solid #6185a0;
-    padding: 3px 3px;
-    margin-left: 1.5em;
-    margin-right: 1.5em;
+    padding: 6px 6px;
+    margin-left: 3em;
+    margin-right: 3em;
     color: #600000;
-    background: #f4f4f8;
+    background: #eeeeee;
     font-family: monospace;
     /* font-size: 90%; */
 }
 
-div.example pre.programlisting
-{
-    border: 0px;
-    padding: 0 0;
-    margin: 0 0 0 0;
-}
-
 
 /***************************************************************************
                                Notes, warnings etc:
  ***************************************************************************/
 
-.note, .warning
+.note,.warning
 {
-    border: 1px solid #6185a0;
-    padding: 3px 3px;
-    margin-left: 1.5em;
-    margin-right: 1.5em;
+    margin-top: 1em;
     margin-bottom: 1em;
-    padding: 0.3em 0.3em 0.3em 0.3em;
+    border: 1px solid #6185a0;
+    padding: 0px 1em;
     background: #fffff5;
 }
 
-div.note, div.warning
+div.note,div.warning
 {
     font-style: italic;
 }
 
-div.note h3, div.warning h3
+div.warning h3
 {
     color: red;
     font-size: 100%;
-//    margin: 0 0 0 0;
-    padding-right: 0.5em;
-    display: inline;
-}
-
-div.note p, div.warning p
-{
-    margin-bottom: 0em;
-}
-
-div.note h3 + p, div.warning h3 + p
-{
-    display: inline;
 }
 
 div.note h3
@@ -198,19 +167,9 @@ tt, code
     
 }
 
-div.variablelist dd p, div.glosslist dd p
+div.variablelist dd
 {
-    margin-top: 0em;
-}
-
-div.variablelist dd, div.glosslist dd
-{
-    margin-left: 1.5em;
-}
-
-div.glosslist dt
-{
-    font-style: italic;
+    margin-bottom: 1em;
 }
 
 .default
@@ -273,16 +232,3 @@ table.productionset table.productionset
 {
     font-family: monospace;
 }
-
-strong.command
-{
-//    font-family: monospace;
-//    font-style: italic;
-//    font-weight: normal;
-    color: #400000;
-}
-
-div.calloutlist td
-{
-    padding-bottom: 1em;
-}

doc/manual/troubleshooting.xml

@@ -1,15 +1,35 @@
-<appendix xmlns="http://docbook.org/ns/docbook"
-          xmlns:xlink="http://www.w3.org/1999/xlink">
+<appendix><title>Troubleshooting</title>
 
-<title>Troubleshooting</title>
+<para>This section provides solutions for some common problems.</para>
 
 
-<para>This section provides solutions for some common problems.  See
-the <link xlink:href="http://bugs.strategoxt.org/browse/NIX">Nix
-bug tracker</link> for a list of currently known issues.</para>
+<sect1><title>Berkeley DB: <quote>Cannot allocate memory</quote></title>
+
+<para>Symptom: Nix operations (in particular the
+<command>nix-store</command> operations <option>--gc</option>,
+<option>--verify</option>, and <option>--clear-substitutes</option> —
+the latter being called by <command>nix-channel --update</command>)
+failing:
+
+<screen>
+$ nix-store --verify
+error: Db::del: Cannot allocate memory</screen>
+
+</para>
+
+<para>Possible solution: make sure that no Nix processes are running,
+then do:
+
+<screen>
+$ cd /nix/var/nix/db
+$ rm __db.00*</screen>
+
+</para>
+
+</sect1>
 
 
-<section><title>Collisions in <command>nix-env</command></title>
+<sect1><title>Collisions in <command>nix-env</command></title>
 
 <para>Symptom: when installing or upgrading, you get an error message such as
 
@@ -35,7 +55,7 @@ so it just gives up.</para>
 
 <para>Solution: remove one of the offending packages from the user
 environment (if already installed) using <command>nix-env
--e</command>, or specify exactly which version should be installed
+-u</command>, or specify exactly which version should be installed
 (e.g., <literal>nix-env -i docbook-xml-4.2</literal>).</para>
 
 <para>Alternatively, you can modify the user environment builder
@@ -45,48 +65,7 @@ to implement some conflict resolution policy.  E.g., the script could
 be modified to rename conflicting file names, or to pick one over the
 other.</para>
 
-</section>
-
-
-<section><title><quote>Too many links</quote> error in the Nix
-store</title>
-
-
-<para>Symptom: when building something, you get an error message such as
-
-<screen>
-...
-<literal>mkdir: cannot create directory `/nix/store/<replaceable>name</replaceable>': Too many links</literal></screen>
-
-</para>
-
-<para>This is usually because you have more than 32,000 subdirectories
-in <filename>/nix/store</filename>, as can be seen using <command>ls
--l</command>:
-
-<screen>
-$ ls -l /nix/store
-drwxrwxrwt 32000 nix nix 4620288 Sep 8 15:08 store</screen>
-
-The <literal>ext2</literal> file system is limited to a inode link
-count of 32,000 (each subdirectory increasing the count by one).
-Furthermore, the <literal>st_nlink</literal> field of the
-<function>stat</function> system call is a 16-bit value.</para>
-
-<para>This only happens on very large Nix installations (such as build
-machines).</para>
-
-<para>Quick solution: run the garbage collector.  You may want to use
-the <option>--max-links</option> option.</para>
-
-<para>Real solution: put the Nix store on a file system that supports
-more than 32,000 subdirectories per directory, such as ReiserFS.
-(This doesn’t solve the <literal>st_nlink</literal> limit, but
-ReiserFS lies to the kernel by reporting a link count of 1 if it
-exceeds the limit.)</para>
-
-</section>
-  
+</sect1>
 
 
 </appendix>

doc/signing.txt

@@ -1,24 +0,0 @@
-Generate a private key:
-
-$ (umask 277 && openssl genrsa -out /nix/etc/nix/signing-key.sec 2048)
-
-The private key should be kept secret (only readable to the Nix daemon
-user).
-
-
-Generate the corresponding public key:
-
-$ openssl rsa -in /nix/etc/nix/signing-key.sec -pubout > /nix/etc/nix/signing-key.pub
-
-The public key should be copied to all machines to which you want to
-export store paths.
-
-
-Signing:
-
-$ nix-hash --type sha256 --flat svn.nar | openssl rsautl -sign -inkey mykey.sec > svn.nar.sign
-
-
-Verifying a signature:
-
-$ test "$(nix-hash --type sha256 --flat svn.nar)" = "$(openssl rsautl -verify -inkey mykey.pub -pubin -in svn.nar.sign)"

externals/Makefile.am

@@ -1,41 +1,72 @@
-# bzip2
+# Berkeley DB
 
-BZIP2 = bzip2-1.0.5
+DB = db-4.3.28.NC
 
-$(BZIP2).tar.gz:
-	@echo "Nix requires bzip2 to build."
-	@echo "Please download version 1.0.5 from"
-	@echo "  http://www.bzip.org/1.0.5/bzip2-1.0.5.tar.gz"
+$(DB).tar.gz:
+	@echo "Nix requires Berkeley DB to build."
+	@echo "Please download version 4.3.28 from"
+	@echo "  http://downloads.sleepycat.com/db-4.3.28.NC.tar.gz"
 	@echo "and place it in the externals/ directory."
 	false
 
-$(BZIP2): $(BZIP2).tar.gz
-	gunzip < $(srcdir)/$(BZIP2).tar.gz | tar xvf -
+$(DB): $(DB).tar.gz
+	gunzip < $(DB).tar.gz | tar xvf -
 
-have-bzip2:
-	$(MAKE) $(BZIP2)
-	touch have-bzip2
+have-db:
+	$(MAKE) $(DB)
+	touch have-db
 
-if HAVE_BZIP2
-build-bzip2:
+if HAVE_BDB
+build-db:
 else
-build-bzip2: have-bzip2
+build-db: have-db
 	(pfx=`pwd` && \
-	cd $(BZIP2) && \
+	cd $(DB)/build_unix && \
+	CC="$(CC)" CXX="$(CXX)" CFLAGS="$(CFLAGS)" CXXFLAGS="$(CXXFLAGS)" \
+	 ../dist/configure --prefix=$$pfx/inst-bdb \
+	 --enable-cxx --disable-shared --disable-cryptography \
+         --disable-replication --disable-verify && \
 	$(MAKE) && \
-	$(MAKE) install PREFIX=$$pfx/inst-bzip2)
-	touch build-bzip2
-
-install:
-	mkdir -p $(DESTDIR)${bzip2_bin}
-	$(INSTALL_PROGRAM) $(bzip2_bin_test)/bzip2 $(bzip2_bin_test)/bunzip2 $(DESTDIR)${bzip2_bin}
+	$(MAKE) install)
+	touch build-db
 endif
 
 
-all: build-bzip2
+# CWI ATerm
 
-EXTRA_DIST = $(BZIP2).tar.gz
+ATERM = aterm-2.3.1
+
+$(ATERM).tar.gz:
+	@echo "Nix requires the CWI ATerm library to build."
+	@echo "Please download version 2.3.1 from"
+	@echo "  http://www.cwi.nl/projects/MetaEnv/aterm/aterm-2.3.1.tar.gz"
+	@echo "and place it in the externals/ directory."
+	false
+
+$(ATERM): $(ATERM).tar.gz
+	gunzip < $(ATERM).tar.gz | tar xvf -
+
+have-aterm:
+	$(MAKE) $(ATERM)
+	touch have-aterm
+
+if HAVE_ATERM
+build-aterm:
+else
+build-aterm: have-aterm
+	(pfx=`pwd` && \
+	cd $(ATERM) && \
+	CC="$(CC)" ./configure --prefix=$$pfx/inst-aterm && \
+	$(MAKE) && \
+	$(MAKE) install)
+	touch build-aterm
+endif
+
+
+all: build-db build-aterm
+
+EXTRA_DIST = $(DB).tar.gz $(ATERM).tar.gz
 
 ext-clean:
-	$(RM) -f have-bzip2 build-bzip2
-	$(RM) -rf $(BZIP2)
+	$(RM) -f have-db build-db have-aterm build-aterm
+	$(RM) -rf $(DB) $(ATERM)

make/examples/aterm/aterm/default.nix

@@ -19,7 +19,11 @@ rec {
     ./version.c
   ];
 
-  compile = main: compileC {inherit main sharedLib;};
+  compile = fn: compileC {
+    main = fn;
+    localIncludes = "auto";
+    forSharedLib = sharedLib;
+  };
 
   libATerm = makeLibrary {
     libraryName = "ATerm";

make/examples/aterm/test/default.nix

@@ -1,15 +1,18 @@
-with (import ../../../lib);
-
 let {
+
+  inherit (import ../../../lib) compileC link;
+
   inherit (import ../aterm {}) libATerm;
 
-  compileTest = main: link {
-    objects = [(compileC {inherit main; localIncludePath = [ ../aterm ];})];
-    libraries = libATerm;
+  compile = fn: compileC {
+    main = fn;
+    localIncludes = "auto";
+    cFlags = "-I../aterm";
   };
 
-  body = [
-    (compileTest ./fib.c)
-    (compileTest ./primes.c)
-  ];
+  fib = link {objects = compile ./fib.c; libraries = libATerm;};
+
+  primes = link {objects = compile ./primes.c; libraries = libATerm;};
+  
+  body = [fib primes];
 }

make/examples/not-so-simple-header-auto/default.nix

@@ -1,13 +1,11 @@
-with import ../../lib;
-
 let {
 
+  inherit (import ../../lib) compileC findIncludes link;
+
   hello = link {programName = "hello"; objects = compileC {
     main = ./foo/hello.c;
     localIncludes = "auto";
   };};
 
-#  body = findIncludes {main = ./foo/hello.c;};
-
   body = [hello];
 }

make/lib/default.nix

@@ -8,55 +8,46 @@ rec {
   stdenv = pkgs.stdenv;
   
 
-  compileC =
-  { main
-  , localIncludes ? "auto"
-  , localIncludePath ? []
-  , cFlags ? ""
-  , sharedLib ? false
-  }:
+  compileC = {main, localIncludes ? [], cFlags ? "", forSharedLib ? false}:
   stdenv.mkDerivation {
     name = "compile-c";
     builder = ./compile-c.sh;
-    
     localIncludes =
       if localIncludes == "auto" then
-        dependencyClosure {
-          scanner = main:
-            import (findIncludes {
-              inherit main;
-            });
-          searchPath = localIncludePath;
-          startSet = [main];
-        }
+        import (findIncludes {
+          main = toString main;
+          hack = __currentTime;
+          inherit cFlags;
+        })
       else
         localIncludes;
-        
     inherit main;
-    
     cFlags = [
       cFlags
-      (if sharedLib then ["-fpic"] else [])
-      (map (p: "-I" + (relativise (dirOf main) p)) localIncludePath)
+      (if forSharedLib then ["-fpic"] else [])
     ];
   };
 
-  
-  findIncludes = {main}: stdenv.mkDerivation {
-    name = "find-includes";
-    realBuilder = pkgs.perl ~ "bin/perl";
-    args = [ ./find-includes.pl ];
-    inherit main;
+  /*
+  runCommand = {command}: {
+    name = "run-command";
+    builder = ./run-command.sh;
+    inherit command;
   };
+  */
 
-    
+  findIncludes = {main, hack, cFlags ? ""}: stdenv.mkDerivation {
+    name = "find-includes";
+    builder = ./find-includes.sh;
+    inherit main hack cFlags;
+  };
+  
   link = {objects, programName ? "program", libraries ? []}: stdenv.mkDerivation {
     name = "link";
     builder = ./link.sh;
     inherit objects programName libraries;
   };
 
-  
   makeLibrary = {objects, libraryName ? [], sharedLib ? false}:
   # assert sharedLib -> fold (obj: x: assert obj.sharedLib && x) false objects
   stdenv.mkDerivation {
@@ -65,5 +56,4 @@ rec {
     inherit objects libraryName sharedLib;
   };
 
-  
 }

make/lib/find-includes.pl

@@ -1,21 +0,0 @@
-use strict;
-
-my $root = $ENV{"main"};
-my $out = $ENV{"out"};
-
-open OUT, ">$out" or die "$!";
-print OUT "[\n";
-
-open IN, "<$root" or die "$!";
-while (<IN>) {
-    if (/^\#include\s+\"(.*)\"/) {
-        print OUT "\"$1\"\n";
-    }
-    if (/^\#include\s+\<(.*)\>/) {
-        print OUT "\"$1\"\n";
-    }
-}
-close IN;
-
-print OUT "]\n";
-close OUT;

make/lib/find-includes.sh

@@ -0,0 +1,20 @@
+. $stdenv/setup
+
+echo "finding includes of \`$(basename $main)'..."
+
+makefile=$NIX_BUILD_TOP/makefile
+
+mainDir=$(dirname $main)
+(cd $mainDir && gcc $cFlags -MM $(basename $main) -MF $makefile) || false
+
+echo "[" >$out
+
+while read line; do
+    line=$(echo "$line" | sed 's/.*://')
+    for i in $line; do
+        fullPath=$(readlink -f $mainDir/$i)
+        echo "  [ $fullPath \"$i\" ]" >>$out
+    done
+done < $makefile
+
+echo "]" >>$out

misc/emacs/Makefile.am

@@ -2,4 +2,4 @@ EXTRA_DIST = nix-mode.el
 
 install-data-local:
 	$(INSTALL) -d $(DESTDIR)$(datadir)/emacs/site-lisp
-	$(INSTALL_DATA) $(srcdir)/nix-mode.el $(DESTDIR)$(datadir)/emacs/site-lisp
+	$(INSTALL_DATA) nix-mode.el $(DESTDIR)$(datadir)/emacs/site-lisp

misc/emacs/nix-mode.el

@@ -66,8 +66,8 @@ The hook `nix-mode-hook' is run when Nix mode is started.
 
 
 (defvar nix-keywords
-  '("\\<if\\>" "\\<then\\>" "\\<else\\>" "\\<assert\\>" "\\<with\\>"
-    "\\<let\\>" "\\<in\\>" "\\<rec\\>" "\\<inherit\\>"
+  '("\\<if\\>" "\\<then\\>" "\\<else\\>" "\\<assert\\>"
+    "\\<let\\>" "\\<rec\\>" "\\<inherit\\>"
     ("\\<true\\>" . font-lock-builtin-face)
     ("\\<false\\>" . font-lock-builtin-face)
     ("\\<null\\>" . font-lock-builtin-face)
@@ -76,10 +76,10 @@ The hook `nix-mode-hook' is run when Nix mode is started.
     ("\\<baseNameOf\\>" . font-lock-builtin-face)
     ("\\<toString\\>" . font-lock-builtin-face)
     ("\\<isNull\\>" . font-lock-builtin-face)
+    ("\\<\\([a-zA-Z_][a-zA-Z0-9_']*\\)[ \t]*="
+     (1 font-lock-variable-name-face nil nil))
     ("[a-zA-Z][a-zA-Z0-9\\+-\\.]*:[a-zA-Z0-9%/\\?:@&=\\+\\$,_\\.!~\\*'-]+"
      . font-lock-constant-face)
-    ("\\<\\([a-zA-Z_][a-zA-Z0-9_'\.]*\\)[ \t]*="
-     (1 font-lock-variable-name-face nil nil))
     ("[a-zA-Z0-9._\\+-]*\\(/[a-zA-Z0-9._\\+-]+\\)+"
      . font-lock-constant-face)
     ))

misc/vim/syntax/nix.vim

@@ -1,37 +0,0 @@
-" Vim syntax file
-" Language:	nix
-" Maintainer:	Marc Weber <marco-oweber@gmx.de>
-"               Modify and commit if you feel that way
-" Last Change:	2007 Dec
-
-" Quit when a (custom) syntax file was already loaded
-if exists("b:current_syntax")
-  finish
-endif
-
-syn keyword	nixKeyword	let throw inherit import true false null with
-syn keyword	nixConditional	if else then
-syn keyword     nixBrace        ( ) { } =
-syn keyword     nixBuiltin         __currentSystem __currentTime __isFunction __getEnv __trace __toPath __pathExists 
-  \ __readFile __toXML __toFile __filterSource __attrNames __getAttr __hasAttr __isAttrs __listToAttrs __isList 
-  \ __head __tail __add __sub __lessThan __substring __stringLength
-
-syn match nixAttr "\w\+\ze\s*="
-syn match nixFuncArg "\zs\w\+\ze\s*:"
-syn region nixStringParam start=+\${+ end=+}+
-syn region nixMultiLineComment start=+/\*+ skip=+\\"+ end=+\*/+
-syn match  nixEndOfLineComment "#.*$"
-syn region nixStringIndented start=+''+ skip=+'''\|''${\|"+ end=+''+ contains=nixStringParam
-syn region nixString         start=+"+ skip=+\\"+ end=+"+ contains=nixStringParam
-
-hi def link nixKeyword       Keyword
-hi def link nixConditional   Conditional
-hi def link nixBrace         Special
-hi def link nixString        String
-hi def link nixStringIndented String
-hi def link nixBuiltin       Special
-hi def link nixStringParam   Macro
-hi def link nixMultiLineComment Comment
-hi def link nixEndOfLineComment Comment
-hi def link nixAttr        Identifier
-hi def link nixFuncArg     Identifier

nix.conf.example

@@ -11,7 +11,7 @@
 # build time (e.g., the C compiler, or source tarballs downloaded from
 # the network).  To prevent it from doing so, set this option to
 # `true'.
-#gc-keep-outputs = false
+gc-keep-outputs = false
 
 
 ### Option `gc-keep-derivations'
@@ -26,7 +26,7 @@
 # store path was built), so by default this option is on.  Turn it off
 # to safe a bit of disk space (or a lot if `gc-keep-outputs' is also
 # turned on).
-#gc-keep-derivations = true
+gc-keep-derivations = true
 
 
 ### Option `env-keep-derivations'
@@ -46,136 +46,4 @@
 # this one is `sticky': it applies to any user environment created
 # while this option was enabled, while `gc-keep-derivations' only
 # applies at the moment the garbage collector is run.
-#env-keep-derivations = false
-
-
-### Option `build-max-jobs'
-#
-# This option defines the maximum number of jobs that Nix will try to
-# build in parallel.  The default is 1.  You should generally set it
-# to the number of CPUs in your system (e.g., 2 on a Athlon 64 X2).
-# It can be overriden using the `--max-jobs' / `-j' command line
-# switch.
-#build-max-jobs = 1
-
-
-### Option `build-cores'
-#
-# This option defines the number of CPU cores to utilize in parallel
-# within a build job, i.e. by passing an appropriate `-jN' flag to GNU
-# Make. The default is 1, meaning that parallel building within jobs
-# is disabled.  Passing the special value `0' causes Nix to try and
-# auto-detect the number of available cores on the local host.  This
-# setting can be overridden using the `--cores' command line switch.
-#build-cores = 1
-
-
-### Option `build-max-silent-time'
-#
-# This option defines the maximum number of seconds that a builder can
-# go without producing any data on standard output or standard error.
-# This is useful (for instance in a automated build system) to catch
-# builds that are stuck in an infinite loop, or to catch remote builds
-# that are hanging due to network problems.  It can be overriden using
-# the `--max-silent-time' command line switch.
-#
-# The value 0 means that there is no timeout.  This is also the
-# default.
-#
-# Example:
-#   build-max-silent-time = 600 # = 10 minutes
-#build-max-silent-time = 0
-
-
-### Option `build-users-group'
-#
-# This options specifies the Unix group containing the Nix build user
-# accounts.  In multi-user Nix installations, builds should not
-# be performed by the Nix account since that would allow users to
-# arbitrarily modify the Nix store and database by supplying specially
-# crafted builders; and they cannot be performed by the calling user
-# since that would allow him/her to influence the build result.
-#
-# Therefore, if this option is non-empty and specifies a valid group,
-# builds will be performed under the user accounts that are a member
-# of the group specified here (as listed in /etc/group).  Those user
-# accounts should not be used for any other purpose!
-#
-# Nix will never run two builds under the same user account at the
-# same time.  This is to prevent an obvious security hole: a malicious
-# user writing a Nix expression that modifies the build result of a
-# legitimate Nix expression being built by another user.  Therefore it
-# is good to have as many Nix build user accounts as you can spare.
-# (Remember: uids are cheap.)
-#
-# The build users should have permission to create files in the Nix
-# store, but not delete them.  Therefore, /nix/store should be owned
-# by the Nix account, its group should be the group specified here,
-# and its mode should be 1775.
-#
-# If the build users group is empty, builds will be performed under
-# the uid of the Nix process (that is, the uid of the caller if
-# $NIX_REMOTE is empty, the uid under which the Nix daemon runs if
-# $NIX_REMOTE is `daemon', or the uid that owns the setuid nix-worker
-# program if $NIX_REMOTE is `slave').  Obviously, this should not be
-# used in multi-user settings with untrusted users.
-#
-# The default is empty.
-#
-# Example:
-#   build-users-group = nix-builders
-#build-users-group =
-
-
-### Option `build-use-chroot'
-#
-# If set to `true', builds will be performed in a chroot environment,
-# i.e., the build will be isolated from the normal file system
-# hierarchy and will only see the Nix store, the temporary build
-# directory, and the directories configured with the
-# `build-chroot-dirs' option (such as /proc and /dev).  This is useful
-# to prevent undeclared dependencies on files in directories such as
-# /usr/bin.
-#
-# The use of a chroot requires that Nix is run as root (but you can
-# still use the "build users" feature to perform builds under
-# different users than root).  Currently, chroot builds only work on
-# Linux because Nix uses "bind mounts" to make the Nix store and other
-# directories available inside the chroot.
-#
-# The default is `false'.
-#
-# Example:
-#   build-use-chroot = true
-#build-use-chroot = false
-
-
-### Option `build-chroot-dirs'
-#
-# When builds are performed in a chroot environment, Nix will mount
-# (using `mount --bind' on Linux) some directories from the normal
-# file system hierarchy inside the chroot.  These are the Nix store,
-# the temporary build directory (usually /tmp/nix-<pid>-<number>) and
-# the directories listed here.  The default is "/dev /dev/pts /proc".
-# Files in /dev (such as /dev/null) are needed by many builds, and
-# some files in /proc may also be needed occasionally.
-#
-# Example:
-#   build-use-chroot = /dev /proc /bin
-#build-chroot-dirs = /dev /dev/pts /proc
-
-
-### Option `build-cache-failure'
-#
-# If this option is enabled, Nix will do negative caching; that is, it
-# will remember failed builds, and won't attempt to try to build them
-# again if you ask for it.  Negative caching is disabled by default
-# because Nix cannot distinguish between permanent build errors (e.g.,
-# a syntax error in a source file) and transient build errors (e.g., a
-# full disk), as they both cause the builder to return a non-zero exit
-# code.  You can clear the cache by doing `rm -f
-# /nix/var/nix/db/failed/*'.
-#
-# Example:
-#   build-cache-failure = true
-#build-cache-failure = false
+env-keep-derivations = false

nix.spec.in

@@ -13,24 +13,19 @@ Version: @version@
 Release: 1
 License: GPL
 Group: Software Deployment
-URL: http://nixos.org/
+URL: http://www.cs.uu.nl/groups/ST/Trace/Nix
 Source0: %{name}-@version@.tar.bz2
 BuildRoot: %{_tmppath}/%{name}-%{version}-buildroot
-Prefix: /usr
+%define _prefix /nix
+Prefix: %{_prefix}
 Requires: /usr/bin/perl
-Requires: curl
 
 # Hack to make that shitty RPM scanning hack shut up.
 Provides: perl(readmanifest)
                                                                
 %description
 
-Nix is a purely functional package manager. It allows multiple
-versions of a package to be installed side-by-side, ensures that
-dependency specifications are complete, supports atomic upgrades and
-rollbacks, allows non-root users to install software, and has many
-other features. It is the basis of the NixOS Linux distribution, but
-it can be used equally well under other Unix systems.
+Nix is a system for software deployment.
 
 %prep
 %setup -q
@@ -46,14 +41,13 @@ if test -n "%{enable_setuid}"; then
         extraFlags="$extraFlags --with-nix-group=%{nix_group}"
     fi
 fi
-./configure --prefix=%{_prefix} --sysconfdir=/etc $extraFlags
+./configure --prefix=%{_prefix} $extraFlags
 make
 make check
 
 %install
 rm -rf $RPM_BUILD_ROOT
 make DESTDIR=$RPM_BUILD_ROOT install
-rm $RPM_BUILD_ROOT/etc/nix/nix.conf
 strip $RPM_BUILD_ROOT/%{_prefix}/bin/* || true
 
 %clean
@@ -72,12 +66,12 @@ fi
 %files
 #%defattr(-,root,root)
 %{_prefix}/bin
-%{_prefix}/lib
 %{_prefix}/libexec
-%{_prefix}/include
+%{_prefix}/var
 %{_prefix}/share
-/etc/profile.d/nix.sh
-/nix/var
-/nix/store
+%{_prefix}/man
+%{_prefix}/store
 %config
-/etc/nix
+%{_prefix}/etc
+#%doc
+#%{_prefix}/share/nix/manual

release.nix

@@ -1,174 +0,0 @@
-{ nixpkgs ? ../nixpkgs
-, nix ? { outPath = ./.; rev = 1234; }
-, officialRelease ? false
-}:
-
-let
-
-  jobs = rec {
-
-
-    tarball =
-      with import nixpkgs {};
-
-      releaseTools.sourceTarball {
-        name = "nix-tarball";
-        version = builtins.readFile ./version;
-        src = nix;
-        inherit officialRelease;
-
-        buildInputs =
-          [ curl bison24 flex2535 perl libxml2 libxslt w3m bzip2
-            tetex dblatex nukeReferences pkgconfig
-          ];
-
-        configureFlags = ''
-          --with-docbook-rng=${docbook5}/xml/rng/docbook
-          --with-docbook-xsl=${docbook5_xsl}/xml/xsl/docbook
-          --with-xml-flags=--nonet
-        '';
-
-        # Include the Bzip2 tarball in the distribution.
-        preConfigure = ''
-          stripHash ${bzip2.src}
-          cp -pv ${bzip2.src} externals/$strippedName
-
-          # TeX needs a writable font cache.
-          export VARTEXFONTS=$TMPDIR/texfonts
-        '';
-
-        preDist = ''
-          make -C doc/manual install prefix=$out
-          
-          make -C doc/manual manual.pdf prefix=$out
-          cp doc/manual/manual.pdf $out/manual.pdf
-
-          # The PDF containes filenames of included graphics (see
-          # http://www.tug.org/pipermail/pdftex/2007-August/007290.html).
-          # This causes a retained dependency on dblatex, which Hydra
-          # doesn't like (the output of the tarball job is distributed
-          # to Windows and Macs, so there should be no Linux binaries
-          # in the closure).
-          nuke-refs $out/manual.pdf
-          
-          echo "doc manual $out/share/doc/nix/manual" >> $out/nix-support/hydra-build-products
-          echo "doc-pdf manual $out/manual.pdf" >> $out/nix-support/hydra-build-products
-          echo "doc release-notes $out/share/doc/nix/release-notes" >> $out/nix-support/hydra-build-products
-        '';
-      };
-
-
-    build =
-      { system ? "i686-linux" }:
-
-      with import nixpkgs { inherit system; };
-
-      releaseTools.nixBuild {
-        name = "nix";
-        src = tarball;
-
-        buildInputs = [ curl perl bzip2 openssl pkgconfig boehmgc ];
-
-        configureFlags = ''
-          --disable-init-state
-          --with-bzip2=${bzip2}
-          --enable-gc
-        '';
-      };
-
-
-    coverage =
-      with import nixpkgs { system = "x86_64-linux"; };
-
-      releaseTools.coverageAnalysis {
-        name = "nix-build";
-        src = tarball;
-
-        buildInputs =
-          [ curl perl bzip2 openssl
-            # These are for "make check" only:
-            graphviz libxml2 libxslt
-          ];
-
-        configureFlags = ''
-          --disable-init-state --disable-shared
-          --with-bzip2=${bzip2}
-        '';
-
-        lcovFilter = ["*/boost/*" "*-tab.*"];
-
-        # We call `dot', and even though we just use it to
-        # syntax-check generated dot files, it still requires some
-        # fonts.  So provide those.
-        FONTCONFIG_FILE = texFunctions.fontsConf;
-      };
-
-      
-    rpm_fedora5i386 = makeRPM_i686 (diskImages: diskImages.fedora5i386) 10;
-    rpm_fedora9i386 = makeRPM_i686 (diskImages: diskImages.fedora9i386) 20;
-    rpm_fedora9x86_64 = makeRPM_x86_64 (diskImages: diskImages.fedora9x86_64) 20;
-    rpm_fedora10i386 = makeRPM_i686 (diskImages: diskImages.fedora10i386) 30;
-    rpm_fedora10x86_64 = makeRPM_x86_64 (diskImages: diskImages.fedora10x86_64) 30;
-    rpm_fedora11i386 = makeRPM_i686 (diskImages: diskImages.fedora11i386) 40;
-    rpm_fedora11x86_64 = makeRPM_x86_64 (diskImages: diskImages.fedora11x86_64) 40;
-    rpm_fedora12i386 = makeRPM_i686 (diskImages: diskImages.fedora12i386) 50;
-    rpm_fedora12x86_64 = makeRPM_x86_64 (diskImages: diskImages.fedora12x86_64) 50;
-    rpm_opensuse103i386 = makeRPM_i686 (diskImages: diskImages.opensuse103i386) 40;
-    rpm_opensuse110i386 = makeRPM_i686 (diskImages: diskImages.opensuse110i386) 50;
-    rpm_opensuse110x86_64 = makeRPM_x86_64 (diskImages: diskImages.opensuse110x86_64) 50;
-
-    
-    deb_debian40i386 = makeDeb_i686 (diskImages: diskImages.debian40i386) 40;
-    deb_debian40x86_64 = makeDeb_x86_64 (diskImages: diskImages.debian40x86_64) 40;
-    deb_debian50i386 = makeDeb_i686 (diskImages: diskImages.debian50i386) 50;
-    deb_debian50x86_64 = makeDeb_x86_64 (diskImages: diskImages.debian50x86_64) 50;
-    deb_ubuntu804i386 = makeDeb_i686 (diskImages: diskImages.ubuntu804i386) 20;
-    deb_ubuntu804x86_64 = makeDeb_x86_64 (diskImages: diskImages.ubuntu804x86_64) 20;
-    deb_ubuntu810i386 = makeDeb_i686 (diskImages: diskImages.ubuntu810i386) 30;
-    deb_ubuntu810x86_64 = makeDeb_x86_64 (diskImages: diskImages.ubuntu810x86_64) 30;
-    deb_ubuntu904i386 = makeDeb_i686 (diskImages: diskImages.ubuntu904i386) 40;
-    deb_ubuntu904x86_64 = makeDeb_x86_64 (diskImages: diskImages.ubuntu904x86_64) 40;
-    deb_ubuntu910i386 = makeDeb_i686 (diskImages: diskImages.ubuntu910i386) 50;
-    deb_ubuntu910x86_64 = makeDeb_x86_64 (diskImages: diskImages.ubuntu910x86_64) 50;
-
-
-  };
-
-
-  makeRPM_i686 = makeRPM "i686-linux";
-  makeRPM_x86_64 = makeRPM "x86_64-linux";
-
-  makeRPM = 
-    system: diskImageFun: prio:
-
-    with import nixpkgs { inherit system; };
-
-    releaseTools.rpmBuild rec {
-      name = "nix-rpm";
-      src = jobs.tarball;
-      diskImage = diskImageFun vmTools.diskImages;
-      memSize = 1024;
-      meta = { schedulingPriority = prio; };
-    };
-
-
-  makeDeb_i686 = makeDeb "i686-linux";
-  makeDeb_x86_64 = makeDeb "x86_64-linux";
-  
-  makeDeb =
-    system: diskImageFun: prio:
-
-    with import nixpkgs { inherit system; };
-
-    releaseTools.debBuild {
-      name = "nix-deb";
-      src = jobs.tarball;
-      diskImage = diskImageFun vmTools.diskImages;
-      memSize = 1024;
-      meta = { schedulingPriority = prio; };
-      configureFlags = "--sysconfdir=/etc";
-      debRequires = [ "curl" ];
-    };
-
-
-in jobs

scripts/Makefile.am

@@ -1,27 +1,17 @@
 bin_SCRIPTS = nix-collect-garbage \
   nix-pull nix-push nix-prefetch-url \
-  nix-install-package nix-channel nix-build \
-  nix-copy-closure 
+  nix-install-package nix-channel nix-build
 
-noinst_SCRIPTS = nix-profile.sh generate-patches.pl \
-  find-runtime-roots.pl build-remote.pl nix-reduce-build \
-  copy-from-other-stores.pl nix-http-export.cgi
+noinst_SCRIPTS = nix-profile.sh generate-patches.pl
 
-nix-pull nix-push: readmanifest.pm readconfig.pm download-using-manifests.pl
+nix-pull nix-push: readmanifest.pm download-using-manifests.pl
 
-install-exec-local: readmanifest.pm download-using-manifests.pl copy-from-other-stores.pl find-runtime-roots.pl
+install-exec-local: readmanifest.pm download-using-manifests.pl
 	$(INSTALL) -d $(DESTDIR)$(sysconfdir)/profile.d
 	$(INSTALL_PROGRAM) nix-profile.sh $(DESTDIR)$(sysconfdir)/profile.d/nix.sh
 	$(INSTALL) -d $(DESTDIR)$(libexecdir)/nix
 	$(INSTALL_DATA) readmanifest.pm $(DESTDIR)$(libexecdir)/nix 
-	$(INSTALL_DATA) readconfig.pm $(DESTDIR)$(libexecdir)/nix 
-	$(INSTALL_DATA) ssh.pm $(DESTDIR)$(libexecdir)/nix 
-	$(INSTALL_PROGRAM) find-runtime-roots.pl $(DESTDIR)$(libexecdir)/nix 
-	$(INSTALL_PROGRAM) generate-patches.pl $(DESTDIR)$(libexecdir)/nix 
-	$(INSTALL_PROGRAM) build-remote.pl $(DESTDIR)$(libexecdir)/nix 
-	$(INSTALL) -d $(DESTDIR)$(libexecdir)/nix/substituters
-	$(INSTALL_PROGRAM) download-using-manifests.pl $(DESTDIR)$(libexecdir)/nix/substituters
-	$(INSTALL_PROGRAM) copy-from-other-stores.pl $(DESTDIR)$(libexecdir)/nix/substituters
+	$(INSTALL_PROGRAM) download-using-manifests.pl $(DESTDIR)$(libexecdir)/nix 
 	$(INSTALL) -d $(DESTDIR)$(sysconfdir)/nix
 
 include ../substitute.mk
@@ -31,14 +21,6 @@ EXTRA_DIST = nix-collect-garbage.in \
   nix-prefetch-url.in nix-install-package.in \
   nix-channel.in \
   readmanifest.pm.in \
-  readconfig.pm.in \
-  ssh.pm \
   nix-build.in \
   download-using-manifests.pl.in \
-  copy-from-other-stores.pl.in \
-  generate-patches.pl.in \
-  nix-copy-closure.in \
-  find-runtime-roots.pl.in \
-  build-remote.pl.in \
-  nix-reduce-build.in \
-  nix-http-export.cgi.in 
+  generate-patches.pl.in

scripts/build-remote.pl.in

@@ -1,240 +0,0 @@
-#! @perl@ -w -I@libexecdir@/nix
-
-use Fcntl ':flock';
-use English '-no_match_vars';
-use IO::Handle;
-use ssh qw/sshOpts openSSHConnection/;
-
-
-# General operation:
-#
-# Try to find a free machine of type $neededSystem.  We do this as
-# follows:
-# - We acquire an exclusive lock on $currentLoad/main-lock.
-# - For each machine $machine of type $neededSystem and for each $slot
-#   less than the maximum load for that machine, we try to get an
-#   exclusive lock on $currentLoad/$machine-$slot (without blocking).
-#   If we get such a lock, we send "accept" to the caller.  Otherwise,
-#   we send "postpone" and exit. 
-# - We release the exclusive lock on $currentLoad/main-lock.
-# - We perform the build on $neededSystem.
-# - We release the exclusive lock on $currentLoad/$machine-$slot.
-#
-# The nice thing about this scheme is that if we die prematurely, the
-# locks are released automatically.
-
-
-# Make sure that we don't get any SSH passphrase or host key popups -
-# if there is any problem it should fail, not do something
-# interactive.
-$ENV{"DISPLAY"} = "";
-$ENV{"SSH_ASKPASS"} = "";
-
-
-my $loadIncreased = 0;
-
-my ($amWilling, $localSystem, $neededSystem, $drvPath, $maxSilentTime) = @ARGV;
-$maxSilentTime = 0 unless defined $maxSilentTime;
-
-sub sendReply {
-    my $reply = shift;
-    print STDERR "# $reply\n";
-}
-
-sub decline {
-    sendReply "decline";
-    exit 0;
-}
-
-my $currentLoad = $ENV{"NIX_CURRENT_LOAD"};
-decline unless defined $currentLoad;
-mkdir $currentLoad, 0777 or die unless -d $currentLoad;
-
-my $conf = $ENV{"NIX_REMOTE_SYSTEMS"};
-decline if !defined $conf || ! -e $conf;
-
-my $canBuildLocally = $amWilling && ($localSystem eq $neededSystem);
-
-
-# Read the list of machines.
-my @machines;
-open CONF, "< $conf" or die;
-
-while (<CONF>) {
-    chomp;
-    s/\#.*$//g;
-    next if /^\s*$/;
-    /^\s*(\S+)\s+(\S+)\s+(\S+)\s+(\d+)(\s+([0-9\.]+))?\s*$/ or die;
-    push @machines,
-        { hostName => $1
-        , systemTypes => [split(/,/, $2)]
-        , sshKeys => $3
-        , maxJobs => $4
-        , speedFactor => 1.0 * ($6 || 1)
-        , enabled => 1
-        };
-}
-
-close CONF;
-
-
-# Acquire the exclusive lock on $currentLoad/main-lock.
-my $mainLock = "$currentLoad/main-lock";
-open MAINLOCK, ">>$mainLock" or die;
-flock(MAINLOCK, LOCK_EX) or die;
-
-
-sub openSlotLock {
-    my ($machine, $slot) = @_;
-    my $slotLockFn = "$currentLoad/" . (join '+', @{$machine->{systemTypes}}) . "-" . $machine->{hostName} . "-$slot";
-    my $slotLock = new IO::Handle;
-    open $slotLock, ">>$slotLockFn" or die;
-    return $slotLock;
-}
-    
-
-my $hostName;
-my $slotLock;
-
-while (1) {
-    
-    # Find all machine that can execute this build, i.e., that support
-    # builds for the given platform and are not at their job limit.
-    my $rightType = 0;
-    my @available = ();
-    LOOP: foreach my $cur (@machines) {
-        if ($cur->{enabled} && grep { $neededSystem eq $_ } @{$cur->{systemTypes}}) {
-            $rightType = 1;
-
-            # We have a machine of the right type.  Determine the load on
-            # the machine.
-            my $slot = 0;
-            my $load = 0;
-            my $free;
-            while ($slot < $cur->{maxJobs}) {
-                my $slotLock = openSlotLock($cur, $slot);
-                if (flock($slotLock, LOCK_EX | LOCK_NB)) {
-                    $free = $slot unless defined $free;
-                    flock($slotLock, LOCK_UN) or die;
-                } else {
-                    $load++;
-                }
-                close $slotLock;
-                $slot++;
-            }
-
-            push @available, { machine => $cur, load => $load, free => $free }
-            if $load < $cur->{maxJobs};
-        }
-    }
-
-    if (defined $ENV{NIX_DEBUG_HOOK}) {
-        print STDERR "load on " . $_->{machine}->{hostName} . " = " . $_->{load} . "\n"
-            foreach @available;
-    }
-
-
-    # Didn't find any available machine?  Then decline or postpone.
-    if (scalar @available == 0) {
-        # Postpone if we have a machine of the right type, except if the
-        # local system can and wants to do the build.
-        if ($rightType && !$canBuildLocally) {
-            sendReply "postpone";
-            exit 0;
-        } else {
-            decline;
-        }
-    }
-
-
-    # Prioritise the available machines as follows:
-    # - First by load divided by speed factor, rounded to the nearest
-    #   integer.  This causes fast machines to be preferred over slow
-    #   machines with similar loads.
-    # - Then by speed factor.
-    # - Finally by load.
-    sub lf { my $x = shift; return int($x->{load} / $x->{machine}->{speedFactor} + 0.4999); }
-    @available = sort
-        { lf($a) <=> lf($b)
-              || $b->{machine}->{speedFactor} <=> $a->{machine}->{speedFactor}
-              || $a->{load} <=> $b->{load}
-        } @available;
-
-
-    # Select the best available machine and lock a free slot.
-    my $selected = $available[0]; 
-    my $machine = $selected->{machine};
-
-    $slotLock = openSlotLock($machine, $selected->{free});
-    flock($slotLock, LOCK_EX | LOCK_NB) or die;
-    utime undef, undef, $slotLock;
-
-    close MAINLOCK;
-
-
-    # Connect to the selected machine.
-    @sshOpts = ("-i", $machine->{sshKeys}, "-x");
-    $hostName = $machine->{hostName};
-    last if openSSHConnection $hostName;
-    
-    warn "unable to open SSH connection to $hostName, trying other available machines...\n";
-    $machine->{enabled} = 0;
-}
-
-
-# Tell Nix we've accepted the build.
-sendReply "accept";
-my $x = <STDIN>;
-chomp $x;
-
-if ($x ne "okay") {
-    exit 0;
-}
-
-
-# Do the actual build.
-print STDERR "building `$drvPath' on `$hostName'\n";
-
-my $inputs = `cat inputs`; die if ($? != 0);
-$inputs =~ s/\n/ /g;
-
-my $outputs = `cat outputs`; die if ($? != 0);
-$outputs =~ s/\n/ /g;
-
-print "copying inputs...\n";
-
-my $maybeSign = "";
-$maybeSign = "--sign" if -e "/nix/etc/nix/signing-key.sec";
-
-system("NIX_SSHOPTS=\"@sshOpts\" @bindir@/nix-copy-closure $hostName $maybeSign $drvPath $inputs") == 0
-    or die "cannot copy inputs to $hostName: $?";
-
-print "building...\n";
-
-my $buildFlags = "--max-silent-time $maxSilentTime --fallback";
-
-# `-tt' forces allocation of a pseudo-terminal.  This is required to
-# make the remote nix-store process receive a signal when the
-# connection dies.  Without it, the remote process might continue to
-# run indefinitely (that is, until it next tries to write to
-# stdout/stderr).
-if (system("ssh $hostName @sshOpts -tt 'nix-store -r $drvPath $buildFlags > /dev/null'") != 0) {
-    # If we couldn't run ssh or there was an ssh problem (indicated by
-    # exit code 255), then we return exit code 1; otherwise we assume
-    # that the builder failed, which we indicate to Nix using exit
-    # code 100.  It's important to distinguish between the two because
-    # the first is a transient failure and the latter is permanent.
-    my $res = $? == -1 || ($? >> 8) == 255 ? 1 : 100;
-    print STDERR "build of `$drvPath' on `$hostName' failed with exit code $?\n";
-    exit $res;
-}
-
-print "build of `$drvPath' on `$hostName' succeeded\n";
-
-foreach my $output (split '\n', $outputs) {
-    my $maybeSignRemote = "";
-    $maybeSignRemote = "--sign" if $UID != 0;
-    
-    system("ssh $hostName @sshOpts 'nix-store --export $maybeSignRemote $output' | @bindir@/nix-store --import > /dev/null") == 0
-	or die "cannot copy $output from $hostName: $?";
-}

scripts/copy-from-other-stores.pl.in

@@ -1,98 +0,0 @@
-#! @perl@ -w
-
-use strict;
-use File::Basename;
-use IO::Handle;
-
-my $binDir = $ENV{"NIX_BIN_DIR"} || "@bindir@";
-
-
-STDOUT->autoflush(1);
-
-my @remoteStoresAll = split ':', ($ENV{"NIX_OTHER_STORES"} or "");
-
-my @remoteStores;
-foreach my $dir (@remoteStoresAll) {
-    push @remoteStores, glob($dir);
-}
-
-
-sub findStorePath {
-    my $storePath = shift;
-    
-    my $storePathName = basename $storePath;
-    
-    foreach my $store (@remoteStores) {
-        # Determine whether $storePath exists by looking for the
-        # existence of the info file, and if so, get store path info
-        # from that file.  This rather breaks abstraction: we should
-        # be using `nix-store' for that.  But right now there is no
-        # good way to tell nix-store to access a store mounted under a
-        # different location (there's $NIX_STORE, but that only works
-        # if the remote store is mounted under its "real" location).
-        my $infoFile = "$store/var/nix/db/info/$storePathName";
-        my $storePath2 = "$store/store/$storePathName";
-        if (-f $infoFile && -e $storePath2) {
-            return ($infoFile, $storePath2);
-        }
-    }
-}
-
-
-if ($ARGV[0] eq "--query") {
-
-    while (<STDIN>) {
-        my $cmd = $_; chomp $cmd;
-
-        if ($cmd eq "have") {
-            my $storePath = <STDIN>; chomp $storePath;
-            (my $infoFile) = findStorePath $storePath;
-            print STDOUT ($infoFile ? "1\n" : "0\n");
-        }
-
-        elsif ($cmd eq "info") {
-            my $storePath = <STDIN>; chomp $storePath;
-            (my $infoFile) = findStorePath $storePath;
-            if (!$infoFile) {
-                print "0\n";
-                next; # not an error
-            }
-            print "1\n";
-
-            my $deriver = "";
-            my @references = ();
-
-            open INFO, "<$infoFile" or die "cannot read info file $infoFile\n";
-            while (<INFO>) {
-                chomp;
-                /^([\w-]+): (.*)$/ or die "bad info file";
-                my $key = $1;
-                my $value = $2;
-                if ($key eq "Deriver") { $deriver = $value; }
-                elsif ($key eq "References") { @references = split ' ', $value; }
-            }
-            close INFO;
-
-            print "$deriver\n";
-            print scalar @references, "\n";
-            print "$_\n" foreach @references;
-            print "0\n"; # !!! showing size not supported (yet)
-        }
-
-        else { die "unknown command `$cmd'"; }
-    }
-}
-
-
-elsif ($ARGV[0] eq "--substitute") {
-    die unless scalar @ARGV == 2;
-    my $storePath = $ARGV[1];
-    (my $infoFile, my $sourcePath) = findStorePath $storePath;
-    die unless $infoFile;
-    print "\n*** Copying `$storePath' from `$sourcePath'\n\n";
-    system("$binDir/nix-store --dump $sourcePath | $binDir/nix-store --restore $storePath") == 0
-        or die "cannot copy `$sourcePath' to `$storePath'";
-}
-
-
-else { die; }

scripts/download-using-manifests.pl.in

@@ -2,110 +2,34 @@
 
 use strict;
 use readmanifest;
-use POSIX qw(strftime);
-use File::Temp qw(tempdir);
 
-my $binDir = $ENV{"NIX_BIN_DIR"} || "@bindir@";
-
-STDOUT->autoflush(1);
-
-my $manifestDir = ($ENV{"NIX_MANIFESTS_DIR"} or "@localstatedir@/nix/manifests");
+my $manifestDir = "@localstatedir@/nix/manifests";
 my $logFile = "@localstatedir@/log/nix/downloads";
 
-
-# Load all manifests.
-my %narFiles;
-my %localPaths;
-my %patches;
-
-for my $manifest (glob "$manifestDir/*.nixmanifest") {
-    my $version = readManifest($manifest, \%narFiles, \%localPaths, \%patches);
-    if ($version < 3) {
-        print STDERR "you have an old-style manifest `$manifest'; please delete it\n";
-        exit 1;
-    }
-    if ($version >= 10) {
-        print STDERR "manifest `$manifest' is too new; please delete it or upgrade Nix\n";
-        exit 1;
-    }
-}
-
-
-# Parse the arguments.
-
-if ($ARGV[0] eq "--query") {
-
-    while (<STDIN>) {
-        my $cmd = $_; chomp $cmd;
-
-        if ($cmd eq "have") {
-            my $storePath = <STDIN>; chomp $storePath;
-            print STDOUT ((defined $narFiles{$storePath} or defined $localPaths{$storePath})
-                ? "1\n" : "0\n");
-        }
-
-        elsif ($cmd eq "info") {
-            my $storePath = <STDIN>; chomp $storePath;
-            my $info;
-            if (defined $narFiles{$storePath}) {
-                $info = @{$narFiles{$storePath}}[0];
-            }
-            elsif (defined $localPaths{$storePath}) {
-                $info = @{$localPaths{$storePath}}[0];
-            }
-            else {
-                print "0\n";
-                next; # not an error
-            }
-            print "1\n";
-            print "$info->{deriver}\n";
-            my @references = split " ", $info->{references};
-            print scalar @references, "\n";
-            print "$_\n" foreach @references;
-            my $size = $info->{size} || 0;
-            print "$size\n";
-        }
-        
-        else { die "unknown command `$cmd'"; }
-    }
-
-    exit 0;
-}
-
-elsif ($ARGV[0] ne "--substitute") {
-    die;
-}
-
-
-die unless scalar @ARGV == 2;
-my $targetPath = $ARGV[1];
-
-
-# Create a temporary directory.
-my $tmpDir = tempdir("nix-download.XXXXXX", CLEANUP => 1, TMPDIR => 1)
-    or die "cannot create a temporary directory";
-
-my $tmpNar = "$tmpDir/nar";
-my $tmpNar2 = "$tmpDir/nar2";
-
-
 open LOGFILE, ">>$logFile" or die "cannot open log file $logFile";
 
-my $date = strftime ("%F %H:%M:%S UTC", gmtime (time));
+
+# Check the arguments.
+die unless scalar @ARGV == 1;
+my $targetPath = $ARGV[0];
+
+my $date = `date` or die;
+chomp $date;
 print LOGFILE "$$ get $targetPath $date\n";
 
 print "\n*** Trying to download/patch `$targetPath'\n";
 
 
-# If we can copy from a local path, do that.
-my $localPathList = $localPaths{$targetPath};
-foreach my $localPath (@{$localPathList}) {
-    my $sourcePath = $localPath->{copyFrom};
-    if (-e $sourcePath) {
-        print "\n*** Step 1/1: copying from $sourcePath\n";
-        system("$binDir/nix-store --dump $sourcePath | $binDir/nix-store --restore $targetPath") == 0
-            or die "cannot copy `$sourcePath' to `$targetPath'";
-        exit 0;
+# Load all manifests.
+my %narFiles;
+my %patches;
+my %successors;
+
+for my $manifest (glob "$manifestDir/*.nixmanifest") {
+#    print STDERR "reading $manifest\n";
+    if (readManifest($manifest, \%narFiles, \%patches, \%successors) < 3) {
+        print STDERR "you have an old-style manifest `$manifest'; please delete it\n";
+        exit 1;
     }
 }
 
@@ -152,7 +76,8 @@ addToQueue $targetPath;
 
 sub isValidPath {
     my $p = shift;
-    return system("$binDir/nix-store --check-validity '$p' 2> /dev/null") == 0;
+    system "@bindir@/nix-store --check-validity '$p' 2> /dev/null";
+    return $? == 0;
 }
 
 sub parseHash {
@@ -186,13 +111,15 @@ while ($queueFront < scalar @queue) {
                 my ($baseHashAlgo, $baseHash) = parseHash $patch->{baseHash};
                 my $format = "--base32";
                 $format = "" if $baseHashAlgo eq "md5";
-                my $hash = `$binDir/nix-hash --type '$baseHashAlgo' $format "$patch->{basePath}"`;
+                my $hash = `@bindir@/nix-hash --type '$baseHashAlgo' $format "$patch->{basePath}"`;
                 chomp $hash;
+#                print "  MY HASH is $hash\n";
                 if ($hash ne $baseHash) {
                     print LOGFILE "$$ rejecting $patch->{basePath}\n";
                     next;
                 }
             }
+#            print "  PATCH from $patch->{basePath}\n";
             addToQueue $patch->{basePath};
             addEdge $patch->{basePath}, $u, $patch->{size}, "patch", $patch;
         }
@@ -200,12 +127,10 @@ while ($queueFront < scalar @queue) {
         # Add NAR file edges to the start node.
         my $narFileList = $narFiles{$u};
         foreach my $narFile (@{$narFileList}) {
-            # !!! how to handle files whose size is not known in advance?
-            # For now, assume some arbitrary size (1 MB).
-            addEdge "start", $u, ($narFile->{size} || 1000000), "narfile", $narFile;
+#            print "  NAR from $narFile->{url}\n";
+            addEdge "start", $u, $narFile->{size}, "narfile", $narFile;
             if ($u eq $targetPath) {
-                my $size = $narFile->{size} || -1;
-                print LOGFILE "$$ full-download-would-be $size\n";
+                print LOGFILE "$$ full-download-would-be $narFile->{size}\n";
             }
         }
 
@@ -231,6 +156,8 @@ while (scalar @todo > 0) {
 
     my $u_ = $graph{$u};
 
+#    print "IN $u $u_->{d}\n";
+
     foreach my $edge (@{$u_->{edges}}) {
         my $v_ = $graph{$edge->{end}};
         if ($v_->{d} > $u_->{d} + $edge->{weight}) {
@@ -238,6 +165,7 @@ while (scalar @todo > 0) {
             # Store the edge; to edge->start is actually the
             # predecessor.
             $v_->{pred} = $edge; 
+#            print "  RELAX $edge->{end} $v_->{d}\n";
         }
     }
 }
@@ -259,18 +187,20 @@ while ($cur ne "start") {
 my $curStep = 1;
 my $maxStep = scalar @path;
 
-sub downloadFile { 
-    my $url = shift; 
+sub downloadFile {
+    my $url = shift;
+    my ($hashAlgo, $hash) = parseHash(shift);
     $ENV{"PRINT_PATH"} = 1;
     $ENV{"QUIET"} = 1;
-    my ($hash, $path) = `$binDir/nix-prefetch-url '$url'`;
+    $ENV{"NIX_HASH_ALGO"} = $hashAlgo;
+    my ($hash2, $path) = `@bindir@/nix-prefetch-url '$url' '$hash'`;
     die "download of `$url' failed" unless $? == 0;
+    chomp $hash2;
     chomp $path;
+    die "hash mismatch, expected $hash, got $hash2" if $hash ne $hash2;
     return $path;
 }
 
-my $finalNarHash;
-
 while (scalar @path > 0) {
     my $edge = pop @path;
     my $u = $edge->{start};
@@ -287,8 +217,8 @@ while (scalar @path > 0) {
             # as a base to one or more patches.  So turn the base path
             # into a NAR archive, to which we can apply the patch.
             print "  packing base path...\n";
-            system("$binDir/nix-store --dump $v > $tmpNar") == 0
-                or die "cannot dump `$v'";
+            system "@bindir@/nix-store --dump $v > /tmp/nar";
+            die "cannot dump `$v'" if ($? != 0);
         }
     }
 
@@ -300,79 +230,50 @@ while (scalar @path > 0) {
 
         # Download the patch.
         print "  downloading patch...\n";
-        my $patchPath = downloadFile "$patch->{url}";
+        my $patchPath = downloadFile "$patch->{url}", "$patch->{hash}";
 
         # Apply the patch to the NAR archive produced in step 1 (for
         # the already present path) or a later step (for patch sequences).
         print "  applying patch...\n";
-        system("@libexecdir@/bspatch $tmpNar $tmpNar2 $patchPath") == 0
-            or die "cannot apply patch `$patchPath' to $tmpNar";
+        system "@libexecdir@/bspatch /tmp/nar /tmp/nar2 $patchPath";
+        die "cannot apply patch `$patchPath' to /tmp/nar" if ($? != 0);
 
         if ($curStep < $maxStep) {
             # The archive will be used as the base of the next patch.
-            rename "$tmpNar2", "$tmpNar" or die "cannot rename NAR archive: $!";
+            rename "/tmp/nar2", "/tmp/nar" or die "cannot rename NAR archive: $!";
         } else {
             # This was the last patch.  Unpack the final NAR archive
             # into the target path.
             print "  unpacking patched archive...\n";
-            system("$binDir/nix-store --restore $v < $tmpNar2") == 0
-                or die "cannot unpack $tmpNar2 into `$v'";
+            system "@bindir@/nix-store --restore $v < /tmp/nar2";
+            die "cannot unpack /tmp/nar2 into `$v'" if ($? != 0);
         }
-
-        $finalNarHash = $patch->{narHash};
     }
 
     elsif ($edge->{type} eq "narfile") {
         my $narFile = $edge->{info};
         print "downloading `$narFile->{url}' into `$v'\n";
 
-        my $size = $narFile->{size} || -1;
-        print LOGFILE "$$ narfile $narFile->{url} $size $v\n";
+        print LOGFILE "$$ narfile $narFile->{url} $narFile->{size} $v\n";
         
         # Download the archive.
         print "  downloading archive...\n";
-        my $narFilePath = downloadFile "$narFile->{url}";
+        my $narFilePath = downloadFile "$narFile->{url}", "$narFile->{hash}";
 
         if ($curStep < $maxStep) {
             # The archive will be used a base to a patch.
-            system("@bunzip2@ < '$narFilePath' > $tmpNar") == 0
-                or die "cannot unpack `$narFilePath' into `$v'";
+            system "@bunzip2@ < '$narFilePath' > /tmp/nar";
         } else {
             # Unpack the archive into the target path.
             print "  unpacking archive...\n";
-            system("@bunzip2@ < '$narFilePath' | $binDir/nix-store --restore '$v'") == 0
-                or die "cannot unpack `$narFilePath' into `$v'";
+            system "@bunzip2@ < '$narFilePath' | @bindir@/nix-store --restore '$v'";
+            die "cannot unpack `$narFilePath' into `$v'" if ($? != 0);
         }
-
-        $finalNarHash = $narFile->{narHash};
     }
 
     $curStep++;
 }
 
 
-# Make sure that the hash declared in the manifest matches what we
-# downloaded and unpacked.
-
-if (defined $finalNarHash) {
-    my ($hashAlgo, $hash) = parseHash $finalNarHash;
-
-    # The hash in the manifest can be either in base-16 or base-32.
-    # Handle both.
-    my $extraFlag =
-        ($hashAlgo eq "sha256" && length($hash) != 64)
-        ? "--base32" : "";
-    
-    my $hash2 = `@bindir@/nix-hash --type $hashAlgo $extraFlag $targetPath`
-        or die "cannot compute hash of path `$targetPath'";
-    chomp $hash2;
-    
-    die "hash mismatch in downloaded path $targetPath; expected $hash, got $hash2"
-        if $hash ne $hash2;
-} else {
-    die "cannot check integrity of the downloaded path since its hash is not known";
-}
-
-
 print LOGFILE "$$ success\n";
 close LOGFILE;

scripts/find-runtime-roots.pl.in

@@ -1,75 +0,0 @@
-#! @perl@ -w
-
-use strict;
-
-my $procDir = "/proc";
-
-
-sub readProc {
-    return unless -d $procDir;
-
-    opendir DIR, $procDir or return;
-    
-    foreach my $name (readdir DIR) {
-        next unless $name =~ /^\d+$/;
-
-        my $process = "$procDir/$name";
-
-        #print STDERR "=== $process\n";
-        
-        my $target;
-        print "$target\n" if $target = readlink "$process/exe";
-        print "$target\n" if $target = readlink "$process/cwd";
-
-        if (opendir FDS, "$process/fd") {
-            foreach my $name (readdir FDS) {
-                $target = readlink "$process/fd/$name";
-                print "$target\n" if $target && substr($target, 0, 1) eq "/";
-            }
-            closedir FDS;
-        }
-
-        if (open MAP, "<$process/maps") {
-            while (<MAP>) {
-                next unless /^ \s* \S+ \s+ \S+ \s+ \S+ \s+ \S+ \s+ \S+ \s+ (\/\S+) \s* $/x;
-                print "$1\n";
-            }
-            close MAP;
-        }
-    }
-
-    closedir DIR;
-}
-
-
-sub lsof {
-    return unless open LSOF, "lsof -n -w -F n 2> /dev/null |";
-
-    while (<LSOF>) {
-        next unless /^n (\/ .*)$/x;
-        print $1, "\n";
-    }
-
-    close LSOF;
-}
-
-
-readProc;
-lsof;
-
-
-sub readFile {
-    my $path = shift;
-    if (-e $path) {
-        if (open FILE, "$path") {
-            while (<FILE>) {
-                print;
-            }
-            close FILE;
-        }
-    }
-}
-
-# This is rather NixOS-specific, so it probably shouldn't be here.
-readFile "/proc/sys/kernel/modprobe";
-readFile "/proc/sys/kernel/fbsplash";

scripts/gc-releases.pl

@@ -1,18 +1,38 @@
-#! /usr/bin/perl -w -I. -I..
+#! /usr/bin/perl -w
 
 use strict;
 use readmanifest;
-use readcache;
+
+
+# Read the archive directories.
+my @archives = ();
+my %archives;
+
+sub readDir {
+    my $dir = shift;
+    opendir(DIR, "$dir") or die "cannot open `$dir': $!";
+    my @as = readdir DIR;
+    foreach my $archive (@as) {
+        push @archives, $archive;
+        $archives{$archive} = "$dir/$archive";
+    }
+    closedir DIR;
+}
+
+readDir "/mnt/scratchy/eelco/public_html/nix-cache";
+readDir "/mnt/scratchy/eelco/public_html/patches";
+
+print STDERR scalar @archives, "\n";
 
 
 # Read the manifests.
 my %narFiles;
-my %localPaths;
 my %patches;
+my %successors;
 
 foreach my $manifest (@ARGV) {
     print STDERR "loading $manifest\n";
-    if (readManifest($manifest, \%narFiles, \%localPaths, \%patches, 1) < 3) {
+    if (readManifest($manifest, \%narFiles, \%patches, \%successors, 1) < 3) {
 #        die "manifest `$manifest' is too old (i.e., for Nix <= 0.7)\n";
     }
 }
@@ -28,8 +48,8 @@ foreach my $narFile (keys %narFiles) {
         die unless defined $basename;
 #        print $basename, "\n";
         $usedFiles{$basename} = 1;
-        print STDERR "missing archive `$basename'\n"
-            unless defined $readcache::archives{$basename};
+        die "missing archive `$basename'"
+            unless defined $archives{$basename};
     }
 }
 
@@ -41,15 +61,15 @@ foreach my $patch (keys %patches) {
 #        print $basename, "\n";
         $usedFiles{$basename} = 1;
         die "missing archive `$basename'"
-            unless defined $readcache::archives{$basename};
+            unless defined $archives{$basename};
     }
 }
 
 
 # Print out the dead archives.
-foreach my $archive (keys %readcache::archives) {
+foreach my $archive (@archives) {
     next if $archive eq "." || $archive eq "..";
     if (!defined $usedFiles{$archive}) {
-        print $readcache::archives{$archive}, "\n";
+        print $archives{$archive}, "\n";
     }
 }

scripts/generate-patches.pl.in

@@ -1,61 +1,52 @@
 #! @perl@ -w -I@libexecdir@/nix
 
 use strict;
-use File::Temp qw(tempdir);
+use POSIX qw(tmpnam);
 use readmanifest;
 
-
-# Some patch generations options.
-
-# Max size of NAR archives to generate patches for.
-my $maxNarSize = $ENV{"NIX_MAX_NAR_SIZE"};
-$maxNarSize = 100 * 1024 * 1024 if !defined $maxNarSize;
-
-# If patch is bigger than this fraction of full archive, reject.
-my $maxPatchFraction = $ENV{"NIX_PATCH_FRACTION"};
-$maxPatchFraction = 0.60 if !defined $maxPatchFraction;
-
-
 die unless scalar @ARGV == 5;
 
 my $hashAlgo = "sha256";
 
-my $narDir = $ARGV[0];
+my $cacheDir = $ARGV[0];
 my $patchesDir = $ARGV[1];
 my $patchesURL = $ARGV[2];
-my $srcManifest = $ARGV[3];
-my $dstManifest = $ARGV[4];
+my $srcDir = $ARGV[3];
+my $dstDir = $ARGV[4];
 
-my $tmpDir = tempdir("nix-generate-patches.XXXXXX", CLEANUP => 1, TMPDIR => 1)
-    or die "cannot create a temporary directory";
+my $tmpdir;
+do { $tmpdir = tmpnam(); }
+until mkdir $tmpdir, 0777;
 
-print "TEMP = $tmpDir\n";
+print "TEMP = $tmpdir\n";
 
-#END { rmdir $tmpDir; }
+#END { rmdir $tmpdir; }
 
 my %srcNarFiles;
-my %srcLocalPaths;
 my %srcPatches;
+my %srcSuccessors;
 
 my %dstNarFiles;
-my %dstLocalPaths;
 my %dstPatches;
+my %dstSuccessors;
 
-readManifest "$srcManifest",
-    \%srcNarFiles, \%srcLocalPaths, \%srcPatches;
+readManifest "$srcDir/MANIFEST",
+    \%srcNarFiles, \%srcPatches, \%srcSuccessors;
 
-readManifest "$dstManifest",
-    \%dstNarFiles, \%dstLocalPaths, \%dstPatches;
+readManifest "$dstDir/MANIFEST",
+    \%dstNarFiles, \%dstPatches, \%dstSuccessors;
 
 
 sub findOutputPaths {
     my $narFiles = shift;
+    my $successors = shift;
 
     my %outPaths;
     
     foreach my $p (keys %{$narFiles}) {
 
-        # Ignore derivations.
+        # Ignore store expressions.
+        next if ($p =~ /\.store$/);
         next if ($p =~ /\.drv$/);
         
         # Ignore builders (too much ambiguity -- they're all called
@@ -64,7 +55,7 @@ sub findOutputPaths {
         next if ($p =~ /\.patch$/);
         
         # Don't bother including tar files etc.
-        next if ($p =~ /\.tar$/ || $p =~ /\.tar\.(gz|bz2|Z|lzma|xz)$/ || $p =~ /\.zip$/ || $p =~ /\.bin$/ || $p =~ /\.tgz$/ || $p =~ /\.rpm$/ || $p =~ /cvs-export$/ || $p =~ /fetchhg$/);
+        next if ($p =~ /\.tar\.(gz|bz2)$/ || $p =~ /\.zip$/ || $p =~ /\.bin$/);
 
         $outPaths{$p} = 1;
     }
@@ -73,10 +64,10 @@ sub findOutputPaths {
 }
 
 print "finding src output paths...\n";
-my %srcOutPaths = findOutputPaths \%srcNarFiles;
+my %srcOutPaths = findOutputPaths \%srcNarFiles, \%srcSuccessors;
 
 print "finding dst output paths...\n";
-my %dstOutPaths = findOutputPaths \%dstNarFiles;
+my %dstOutPaths = findOutputPaths \%dstNarFiles, \%dstSuccessors;
 
 
 sub getNameVersion {
@@ -84,7 +75,6 @@ sub getNameVersion {
     $p =~ /\/[0-9a-z]+((?:-[a-zA-Z][^\/-]*)+)([^\/]*)$/;
     my $name = $1;
     my $version = $2;
-    return undef unless defined $name && defined $version;
     $name =~ s/^-//;
     $version =~ s/^-//;
     return ($name, $version);
@@ -112,14 +102,14 @@ sub getNarBz2 {
     my $storePath = shift;
     
     my $narFileList = $$narFiles{$storePath};
-    die "missing path $storePath" unless defined $narFileList;
+    die "missing store expression $storePath" unless defined $narFileList;
 
     my $narFile = @{$narFileList}[0];
     die unless defined $narFile;
 
     $narFile->{url} =~ /\/([^\/]+)$/;
     die unless defined $1;
-    return "$narDir/$1";
+    return "$cacheDir/$1";
 }
 
 
@@ -150,19 +140,19 @@ sub computeUses {
 
 #    print "  DERIVER $deriver\n";
 
-    # Optimisation: build the referrers graph from the references
+    # Optimisation: build the referers graph from the references
     # graph.
-    my %referrers;
+    my %referers;
     foreach my $q (keys %{$narFiles}) {
         my @refs = split " ", @{$$narFiles{$q}}[0]->{references};
         foreach my $r (@refs) {
-            $referrers{$r} = [] unless defined $referrers{$r};
-            push @{$referrers{$r}}, $q;
+            $referers{$r} = [] unless defined $referers{$r};
+            push @{$referers{$r}}, $q;
         }
     }
 
     # Determine the shortest path from $deriver to all other reachable
-    # paths in the `referrers' graph.
+    # paths in the `referers' graph.
 
     my %dist;
     $dist{$deriver} = 0;
@@ -174,7 +164,7 @@ sub computeUses {
         my $p = $queue[$pos];
         $pos++;
 
-        foreach my $q (@{$referrers{$p}}) {
+        foreach my $q (@{$referers{$p}}) {
             if (!defined $dist{$q}) {
                 $dist{$q} = $dist{$p} + 1;
 #                print "    $q $dist{$q}\n";
@@ -213,7 +203,6 @@ foreach my $p (keys %dstOutPaths) {
     # this path.
 
     (my $name, my $version) = getNameVersion $p;
-    next unless defined $name && defined $version;
 
     my @closest = ();
     my $closestVersion;
@@ -223,8 +212,6 @@ foreach my $p (keys %dstOutPaths) {
 
     foreach my $q (keys %srcOutPaths) {
         (my $name2, my $version2) = getNameVersion $q;
-	next unless defined $name2 && defined $version2;
-
         if ($name eq $name2) {
 
             # If the sizes differ too much, then skip.  This
@@ -244,11 +231,11 @@ foreach my $p (keys %dstOutPaths) {
             # If the numbers of weighted uses differ too much, then
             # skip.  This disambiguates between, e.g., the bootstrap
             # GCC and the final GCC in Nixpkgs.
-#            my $srcUses = computeUses \%srcNarFiles, $q;
-#            my $dstUses = computeUses \%dstNarFiles, $p;
-#            $ratio = $srcUses / $dstUses;
-#            $ratio = 1 / $ratio if $ratio < 1;
-#            print "  USE $srcUses $dstUses $ratio $q\n";
+            my $srcUses = computeUses \%srcNarFiles, $q;
+            my $dstUses = computeUses \%dstNarFiles, $p;
+            $ratio = $srcUses / $dstUses;
+            $ratio = 1 / $ratio if $ratio < 1;
+            print "  USE $srcUses $dstUses $ratio $q\n";
             
 #            if ($ratio >= 2) {
 #                print "  SKIPPING $q due to use ratio $ratio ($srcUses $dstUses)\n";
@@ -290,65 +277,45 @@ foreach my $p (keys %dstOutPaths) {
         
         my $srcNarBz2 = getNarBz2 \%srcNarFiles, $closest;
         my $dstNarBz2 = getNarBz2 \%dstNarFiles, $p;
-
-        if (! -f $srcNarBz2) {
-            warn "patch source archive $srcNarBz2 is missing\n";
-            next;
-        }
-
-        system("@bunzip2@ < $srcNarBz2 > $tmpDir/A") == 0
+        
+        system("@bunzip2@ < $srcNarBz2 > $tmpdir/A") == 0
             or die "cannot unpack $srcNarBz2";
 
-        if ((stat "$tmpDir/A")[7] >= $maxNarSize) {
-            print "    skipping, source is too large\n";
-            next;
-        }
-        
-        system("@bunzip2@ < $dstNarBz2 > $tmpDir/B") == 0
+        system("@bunzip2@ < $dstNarBz2 > $tmpdir/B") == 0
             or die "cannot unpack $dstNarBz2";
 
-        if ((stat "$tmpDir/B")[7] >= $maxNarSize) {
-            print "    skipping, destination is too large\n";
-            next;
-        }
-        
-        system("@libexecdir@/bsdiff $tmpDir/A $tmpDir/B $tmpDir/DIFF") == 0
+        system("@libexecdir@/bsdiff $tmpdir/A $tmpdir/B $tmpdir/DIFF") == 0
             or die "cannot compute binary diff";
 
-        my $baseHash = `@bindir@/nix-hash --flat --type $hashAlgo --base32 $tmpDir/A` or die;
+        my $baseHash = `@bindir@/nix-hash --flat --type $hashAlgo --base32 $tmpdir/A` or die;
         chomp $baseHash;
 
-        my $narHash = `@bindir@/nix-hash --flat --type $hashAlgo --base32 $tmpDir/B` or die;
+        my $narHash = `@bindir@/nix-hash --flat --type $hashAlgo --base32 $tmpdir/B` or die;
         chomp $narHash;
 
-        my $narDiffHash = `@bindir@/nix-hash --flat --type $hashAlgo --base32 $tmpDir/DIFF` or die;
+        my $narDiffHash = `@bindir@/nix-hash --flat --type $hashAlgo --base32 $tmpdir/DIFF` or die;
         chomp $narDiffHash;
 
-        my $narDiffSize = (stat "$tmpDir/DIFF")[7];
+        my $narDiffSize = (stat "$tmpdir/DIFF")[7];
         my $dstNarBz2Size = (stat $dstNarBz2)[7];
 
-        print "    size $narDiffSize; full size $dstNarBz2Size\n";
-        
         if ($narDiffSize >= $dstNarBz2Size) {
             print "    rejecting; patch bigger than full archive\n";
             next;
         }
     
-        if ($narDiffSize / $dstNarBz2Size >= $maxPatchFraction) {
-            print "    rejecting; patch too large relative to full archive\n";
-            next;
-        }
-    
         my $finalName =
             "$narDiffHash.nar-bsdiff";
 
+        print "    size $narDiffSize; full size $dstNarBz2Size\n";
+        
         if (-e "$patchesDir/$finalName") {
             print "    not copying, already exists\n";
         }
 
         else {
 
-            system("cp '$tmpDir/DIFF' '$patchesDir/$finalName.tmp'") == 0
+            system("cp '$tmpdir/DIFF' '$patchesDir/$finalName.tmp'") == 0
                 or die "cannot copy diff";
             
             rename("$patchesDir/$finalName.tmp", "$patchesDir/$finalName")
@@ -370,22 +337,11 @@ foreach my $p (keys %dstOutPaths) {
 # patches that produce either paths in the destination or paths that
 # can be used as the base for other useful patches).
 
-print "propagating patches...\n";
-
 my $changed;
 do {
     # !!! we repeat this to reach the transitive closure; inefficient
     $changed = 0;
 
-    print "loop\n";
-
-    my %dstBasePaths;
-    foreach my $q (keys %dstPatches) {
-	foreach my $patch (@{$dstPatches{$q}}) {
-	    $dstBasePaths{$patch->{basePath}} = 1;
-	}
-    }
-
     foreach my $p (keys %srcPatches) {
         my $patchList = $srcPatches{$p};
 
@@ -393,18 +349,22 @@ do {
 
         # Is path $p included in the destination?  If so, include
         # patches that produce it.
-        $include = 1 if defined $dstNarFiles{$p};
+        $include = 1 if (defined $dstNarFiles{$p});
 
         # Is path $p a path that serves as a base for paths in the
         # destination?  If so, include patches that produce it.
-	# !!! check baseHash
-        $include = 1 if defined $dstBasePaths{$p};
+        foreach my $q (keys %dstPatches) {
+            foreach my $patch (@{$dstPatches{$q}}) {
+                # !!! check baseHash
+                $include = 1 if ($p eq $patch->{basePath});
+            }
+        }
 
         if ($include) {
             foreach my $patch (@{$patchList}) {
                 $changed = 1 if addPatch \%dstPatches, $p, $patch;
             }
-        }
+        }            
         
     }
     
@@ -412,5 +372,5 @@ do {
 
 
 # Rewrite the manifest of the destination (with the new patches).
-writeManifest "${dstManifest}",
-    \%dstNarFiles, \%dstPatches;
+writeManifest "$dstDir/MANIFEST",
+    \%dstNarFiles, \%dstPatches, \%dstSuccessors;

scripts/maintenance/gc-commands

@@ -1,2 +0,0 @@
-./gc-releases.pl /data/webserver/dist/*/*/MANIFEST > dead
-cat dead | xargs mv --target-directory=/data/webserver/trash/

scripts/maintenance/readcache.pm

@@ -1,21 +0,0 @@
-package readcache;
-use strict;
-
-# Read the archive directories.
-our %archives;
-
-sub readDir {
-    my $dir = shift;
-    opendir(DIR, "$dir") or die "cannot open `$dir': $!";
-    my @as = readdir DIR;
-    foreach my $archive (@as) {
-        $archives{$archive} = "$dir/$archive";
-    }
-    closedir DIR;
-}
-
-readDir "/data/webserver/dist/nix-cache";
-readDir "/data/webserver/dist/test-cache";
-readDir "/data/webserver/dist/patches";
-
-print STDERR scalar (keys %archives), "\n";

scripts/maintenance/shrink-manifest.pl

@@ -1,76 +0,0 @@
-#! /usr/bin/perl -w -I. -I..
-
-use strict;
-use readmanifest;
-use readcache;
-
-
-my %allNarFiles;
-my %allLocalPaths;
-my %allPatches;
-
-foreach my $manifest (glob "/data/webserver/dist/*/*/MANIFEST") {
-    print STDERR "loading $manifest\n";
-    readManifest($manifest, \%allNarFiles, \%allLocalPaths, \%allPatches, 1);
-}
-
-
-
-foreach my $manifest (@ARGV) {
-
-    print STDERR "shrinking manifest $manifest...\n";
-
-    my %narFiles;
-    my %patches;
-
-    if (readManifest($manifest, \%narFiles, \%patches, 1) < 3) {
-        print STDERR "manifest `$manifest' is too old (i.e., for Nix <= 0.7)\n";
-	next;
-    }
-
-    my %done;
-
-    sub traverse {
-	my $p = shift;
-	my $prefix = shift;
-	print "$prefix$p\n";
-
-	my $reachesNAR = 0;
-
-	foreach my $patch (@{$patches{$p}}) {
-	    next if defined $done{$patch->{url}};
-	    $done{$patch->{url}} = 1;
-	    $reachesNAR = 1 if traverse ($patch->{basePath}, $prefix . "  ");
-	}
-
-	$reachesNAR = 1 if defined $allNarFiles{$p};
-
-	print "  $prefix$reachesNAR\n";
-	return $reachesNAR;
-    }
-
-#    foreach my $p (keys %narFiles) {
-#	traverse ($p, "");
-#    }
-
-    my %newPatches;
-
-    foreach my $p (keys %patches) {
-	my $patchList = $patches{$p};
-	my @newList;
-	foreach my $patch (@{$patchList}) {
-	    if (! defined $allNarFiles{$patch->{basePath}} || 
-		! defined $allNarFiles{$p} ) 
-	    {
-#		print "REMOVING PATCH ", $patch->{basePath}, " -> ", $p, "\n";
-	    } else {
-#		print "KEEPING PATCH ", $patch->{basePath}, " -> ", $p, "\n";
-		push @newList, $patch;
-	    }
-	}
-	$newPatches{$p} = \@newList;
-    }
-
-    writeManifest ($manifest, \%narFiles, \%newPatches);
-}
-

scripts/nix-build.in

@@ -1,182 +1,59 @@
-#! @perl@ -w -I@libexecdir@/nix
+#! @shell@ -e
 
-use strict;
+nixExpr=$1
 
-my $binDir = $ENV{"NIX_BIN_DIR"} || "@bindir@";
+if test -z "$nixExpr"; then
+    echo "syntax: $0 NIX-EXPR..." >&2
+    exit 1
+fi
+
+extraArgs=
+addDrvLink=0
+addOutLink=1
 
 
-my $addDrvLink = 0;
-my $addOutLink = 1;
-
-my $outLink;
-my $drvLink;
-
-my $dryRun = 0;
-my $verbose = 0;
-
-my @instArgs = ();
-my @buildArgs = ();
-my @exprs = ();
+trap 'rm -f ./.nix-build-tmp-*' EXIT
 
 
-END {
-    foreach my $fn (glob ".nix-build-tmp-*") {
-        unlink $fn;
-    }
-}
-
-sub intHandler {
-    exit 1;
-}
-
-$SIG{'INT'} = 'intHandler';
-
-
-for (my $n = 0; $n < scalar @ARGV; $n++) {
-    my $arg = $ARGV[$n];
-
-    if ($arg eq "--help") {
-        print STDERR <<EOF;
-Usage: nix-build [OPTION]... [FILE]...
-
-`nix-build' builds the given Nix expressions (which
-default to ./default.nix if none are given).  A symlink called
-`result' is placed in the current directory.
-
-Flags:
-  --add-drv-link: create a symlink `derivation' to the store derivation
-  --drv-link NAME: create symlink NAME instead of `derivation'
-  --no-out-link: do not create the `result' symlink
-  --out-link / -o NAME: create symlink NAME instead of `result'
-  --attr ATTR: select a specific attribution from the Nix expression
-
-Any additional flags are passed to `nix-store'.
-EOF
-        exit 0;
-        # '` hack
-    }
-
-    elsif ($arg eq "--add-drv-link") {
-        $addDrvLink = 1;
-    }
-
-    elsif ($arg eq "--no-out-link" or $arg eq "--no-link") {
-        $addOutLink = 0;
-    }
-
-    elsif ($arg eq "--drv-link") {
-        $n++;
-        die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
-        $drvLink = $ARGV[$n];
-    }
-
-    elsif ($arg eq "--out-link" or $arg eq "-o") {
-        $n++;
-        die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
-        $outLink = $ARGV[$n];
-    }
-
-    elsif ($arg eq "--attr" or $arg eq "-A") {
-        $n++;
-        die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
-        push @instArgs, ("--attr", $ARGV[$n]);
-    }
-
-    elsif ($arg eq "--arg" || $arg eq "--argstr") {
-        die "$0: `$arg' requires two arguments\n" unless $n + 2 < scalar @ARGV;
-        push @instArgs, ($arg, $ARGV[$n + 1], $ARGV[$n + 2]);
-        $n += 2;
-    }
-
-    elsif ($arg eq "--log-type") {
-        $n++;
-        die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
-        push @instArgs, ($arg, $ARGV[$n]);
-        push @buildArgs, ($arg, $ARGV[$n]);
-    }
-
-    elsif ($arg eq "--option") {
-        die "$0: `$arg' requires two arguments\n" unless $n + 2 < scalar @ARGV;
-        push @instArgs, ($arg, $ARGV[$n + 1], $ARGV[$n + 2]);
-        push @buildArgs, ($arg, $ARGV[$n + 1], $ARGV[$n + 2]);
-        $n += 2;
-    }
-
-    elsif ($arg eq "--max-jobs" or $arg eq "-j" or $arg eq "--max-silent-time" or $arg eq "--log-type" or $arg eq "--cores") {
-        $n++;
-        die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
-        push @buildArgs, ($arg, $ARGV[$n]);
-    }
-
-    elsif ($arg eq "--dry-run") {
-        push @buildArgs, "--dry-run";
-        $dryRun = 1;
-    }
+# Process the arguments.
+for i in "$@"; do
+    case "$i" in
     
-    elsif ($arg eq "--show-trace") {
-        push @instArgs, $arg;
-    }
-    
-    elsif ($arg eq "--verbose" or substr($arg, 0, 2) eq "-v") {
-        push @buildArgs, $arg;
-        push @instArgs, $arg;
-        $verbose = 1;
-    }
-    
-    elsif (substr($arg, 0, 1) eq "-") {
-        push @buildArgs, $arg;
-    }
+        --add-drv-link)
+            addDrvLink=1
+            ;;
+            
+        --no-link)
+            addOutLink=0
+            ;;
+            
+        -*)
+            extraArgs="$extraArgs $i"
+            ;;
+            
+        *)
+            # Instantiate the Nix expression.
+            prefix=
+            if test "$addDrvLink" = 0; then prefix=.nix-build-tmp-; fi
+            storeExprs=$(@bindir@/nix-instantiate \
+                --add-root ./${prefix}derivation --indirect \
+                "$i")
+                
+            for j in $storeExprs; do
+                echo "store expression is $(readlink "$j")" >&2
+            done
 
-    else {
-        push @exprs, $arg;
-    }
-}
-
-@exprs = ("./default.nix") if scalar @exprs == 0;
-
-
-if (!defined $drvLink) {
-    $drvLink = "derivation";
-    $drvLink = ".nix-build-tmp-" . $drvLink if !$addDrvLink;
-}
-
-if (!defined $outLink) {
-    $outLink = "result";
-    $outLink = ".nix-build-tmp-" . $outLink if !$addOutLink;
-}
-
-
-foreach my $expr (@exprs) {
-
-    # Instantiate.
-    my @drvPaths;
-    # !!! would prefer the perl 5.8.0 pipe open feature here.
-    my $pid = open(DRVPATHS, "-|") || exec "$binDir/nix-instantiate", "--add-root", $drvLink, "--indirect", @instArgs, $expr;
-    while (<DRVPATHS>) {chomp; push @drvPaths, $_;}
-    if (!close DRVPATHS) {
-        die "nix-instantiate killed by signal " . ($? & 127) . "\n" if ($? & 127);
-        exit 1;
-    }
-
-    foreach my $drvPath (@drvPaths) {
-        my $target = readlink $drvPath or die "cannot read symlink `$drvPath'";
-        print STDERR "derivation is $target\n" if $verbose;
-    }
-
-    # Build.
-    my @outPaths;
-    $pid = open(OUTPATHS, "-|") || exec "$binDir/nix-store", "--add-root", $outLink, "--indirect", "-rv",
-        @buildArgs, @drvPaths;
-    while (<OUTPATHS>) {chomp; push @outPaths, $_;}
-    if (!close OUTPATHS) {
-        die "nix-store killed by signal " . ($? & 127) . "\n" if ($? & 127);
-        exit 1;
-    }
-
-    next if $dryRun;
-
-    foreach my $outPath (@outPaths) {
-        my $target = readlink $outPath or die "cannot read symlink `$outPath'";
-        print "$target\n";
-    }
-}
+            # Build the resulting store derivation.
+            prefix=
+            if test "$addOutLink" = 0; then prefix=.nix-build-tmp-; fi
+            outPaths=$(@bindir@/nix-store \
+                --add-root ./${prefix}result --indirect \
+                -rv $extraArgs $storeExprs)
+                
+            for j in $outPaths; do
+                echo "$(readlink "$j")"
+            done
+            
+            ;;
+    esac
+done

scripts/nix-channel.in

@@ -2,24 +2,13 @@
 
 use strict;
 
-my $rootsDir = "@localstatedir@/nix/gcroots";
-
-my $stateDir = $ENV{"NIX_STATE_DIR"};
-$stateDir = "@localstatedir@/nix" unless defined $stateDir;
-
-
-# Turn on caching in nix-prefetch-url.
-my $channelCache = "$stateDir/channel-cache";
-mkdir $channelCache, 0755 unless -e $channelCache;
-$ENV{'NIX_DOWNLOAD_CACHE'} = $channelCache if -W $channelCache;
+my $rootsDir = "@localstatedir@/nix/gcroots/channels";
 
 
 # Figure out the name of the `.nix-channels' file to use.
 my $home = $ENV{"HOME"};
 die '$HOME not set' unless defined $home;
 my $channelsList = "$home/.nix-channels";
-
-my $nixDefExpr = "$home/.nix-defexpr";
     
 
 my @channels;
@@ -31,7 +20,6 @@ sub readChannels {
     open CHANNELS, "<$channelsList" or die "cannot open `$channelsList': $!";
     while (<CHANNELS>) {
         chomp;
-        next if /^\s*\#/;
         push @channels, $_;
     }
     close CHANNELS;
@@ -78,68 +66,56 @@ sub removeChannel {
 sub update {
     readChannels;
 
-    # Create the manifests directory if it doesn't exist.
-    mkdir "$stateDir/manifests", 0755 unless -e "$stateDir/manifests";
-
-    # Do we have write permission to the manifests directory?  If not,
-    # then just skip pulling the manifest and just download the Nix
-    # expressions.  If the user is a non-privileged user in a
-    # multi-user Nix installation, he at least gets installation from
-    # source.
-    if (-W "$stateDir/manifests") {
-
-        # Pull cache manifests.
-        foreach my $url (@channels) {
-            #print "pulling cache manifest from `$url'\n";
-            system("@bindir@/nix-pull", "--skip-wrong-store", "$url/MANIFEST") == 0
-                or die "cannot pull cache manifest from `$url'";
-        }
+    # Get rid of all the old substitutes.
+    system "@bindir@/nix-store --clear-substitutes";
+    die "cannot clear substitutes" if ($? != 0);
 
+    # Pull cache manifests.
+    foreach my $url (@channels) {
+        print "pulling cache manifest from `$url'\n";
+        system "@bindir@/nix-pull '$url'/MANIFEST";
+        die "cannot pull cache manifest from `$url'" if ($? != 0);
     }
 
     # Create a Nix expression that fetches and unpacks the channel Nix
     # expressions.
 
-    my $inputs = "[";
+    my $nixExpr = "[";
     foreach my $url (@channels) {
-        $url =~ /\/([^\/]+)\/?$/;
-        my $channelName = $1;
-        $channelName = "unnamed" unless defined $channelName;
-
         my $fullURL = "$url/nixexprs.tar.bz2";
-        print "downloading Nix expressions from `$fullURL'...\n";
         $ENV{"PRINT_PATH"} = 1;
-        $ENV{"QUIET"} = 1;
-        my ($hash, $path) = `@bindir@/nix-prefetch-url '$fullURL'`;
+        my ($hash, $path) = `@bindir@/nix-prefetch-url '$fullURL' 2> /dev/null`;
         die "cannot fetch `$fullURL'" if $? != 0;
         chomp $path;
-        $inputs .= '"' . $channelName . '"' . " " . $path . " ";
+        $nixExpr .= $path . " ";
     }
-    $inputs .= "]";
+    $nixExpr .= "]";
+
+    $nixExpr =
+        "(import @datadir@/nix/corepkgs/channels/unpack.nix) " .
+        "{inputs = $nixExpr; system = \"@system@\";}";
 
     # Figure out a name for the GC root.
     my $userName = getpwuid($<);
     die "who ARE you? go away" unless defined $userName;
 
-    my $rootFile = "$rootsDir/per-user/$userName/channels";
+    my $rootFile = "$rootsDir/$userName";
     
-    # Build the Nix expression.
-    print "unpacking channel Nix expressions...\n";
-    my $outPath = `\\
-        @bindir@/nix-build --out-link '$rootFile' --drv-link '$rootFile'.tmp \\
-        @datadir@/nix/corepkgs/channels/unpack.nix \\
-        --argstr system @system@ --arg inputs '$inputs'`
-        or die "cannot unpack the channels";
+    # Instantiate the Nix expression.
+    my $storeExpr = `echo '$nixExpr' | @bindir@/nix-instantiate --add-root '$rootFile'.tmp -`
+        or die "cannot instantiate Nix expression";
+    chomp $storeExpr;
+
+    # Build the resulting derivation.
+    my $outPath = `nix-store --add-root '$rootFile' -r '$storeExpr'`
+        or die "cannot realise store expression";
     chomp $outPath;
 
     unlink "$rootFile.tmp";
 
-    # Make the channels appear in nix-env.
-    unlink $nixDefExpr if -l $nixDefExpr; # old-skool ~/.nix-defexpr
-    mkdir $nixDefExpr or die "cannot create directory `$nixDefExpr'" if !-e $nixDefExpr;
-    my $channelLink = "$nixDefExpr/channels";
-    unlink $channelLink; # !!! not atomic
-    symlink($outPath, $channelLink) or die "cannot symlink `$channelLink' to `$outPath'";
+    # Make it the default Nix expression for `nix-env'.
+    system "@bindir@/nix-env --import '$outPath'";
+    die "cannot pull set default Nix expression to `$outPath'" if ($? != 0);
 }
 
 

scripts/nix-collect-garbage.in

@@ -1,53 +1,2 @@
-#! @perl@ -w
-
-use strict;
-
-my $profilesDir = "@localstatedir@/nix/profiles";
-
-my $binDir = $ENV{"NIX_BIN_DIR"} || "@bindir@";
-
-
-# Process the command line arguments.
-my @args = ();
-my $removeOld = 0;
-
-for my $arg (@ARGV) {
-    if ($arg eq "--delete-old" || $arg eq "-d") {
-        $removeOld = 1;
-    } else {
-        push @args, $arg;
-    }
-}
-
-
-# If `-d' was specified, remove all old generations of all profiles.
-# Of course, this makes rollbacks to before this point in time
-# impossible.
-
-sub removeOldGenerations;
-sub removeOldGenerations {
-    my $dir = shift;
-
-    my $dh;
-    opendir $dh, $dir or die;
-
-    foreach my $name (sort (readdir $dh)) {
-        next if $name eq "." || $name eq "..";
-        $name = $dir . "/" . $name;
-        if (-l $name && (readlink($name) =~ /link/)) {
-            print STDERR "removing old generations of profile $name\n";
-            system("$binDir/nix-env", "-p", $name, "--delete-generations", "old");
-        }
-        elsif (! -l $name && -d $name) {
-            removeOldGenerations $name;
-        }
-    }
-    
-    closedir $dh or die;
-}
-
-removeOldGenerations $profilesDir if $removeOld;
-
-
-# Run the actual garbage collector.
-exec "$binDir/nix-store", "--gc", @args;
+#! @shell@ -e
+exec @bindir@/nix-store --gc "$@"

scripts/nix-copy-closure.in

@@ -1,137 +0,0 @@
-#! @perl@ -w -I@libexecdir@/nix
-
-use ssh;
-
-my $binDir = $ENV{"NIX_BIN_DIR"} || "@bindir@";
-
-
-if (scalar @ARGV < 1) {
-    print STDERR <<EOF
-Usage: nix-copy-closure [--from | --to] HOSTNAME [--sign] [--gzip] PATHS...
-EOF
-    ;
-    exit 1;
-}
-
-
-# Get the target host.
-my $sshHost;
-
-my $sign = 0;
-
-my $compressor = "";
-my $decompressor = "";
-
-my $toMode = 1;
-
-
-# !!! Copied from nix-pack-closure, should put this in a module.
-my @storePaths = ();
-
-while (@ARGV) {
-    my $arg = shift @ARGV;
-    
-    if ($arg eq "--sign") {
-        $sign = 1;
-    }
-    elsif ($arg eq "--gzip") {
-        $compressor = "| gzip";
-        $decompressor = "gunzip |";
-    }
-    elsif ($arg eq "--from") {
-        $toMode = 0;
-    }
-    elsif ($arg eq "--to") {
-        $toMode = 1;
-    }
-    elsif (!defined $sshHost) {
-        $sshHost = $arg;
-    }
-    else {
-        push @storePaths, $arg;
-    }
-}
-
-
-openSSHConnection $sshHost or die "$0: unable to start SSH\n";
-
-
-if ($toMode) { # Copy TO the remote machine.
-
-    my @allStorePaths;
-
-    # Get the closure of this path.
-    my $pid = open(READ, "$binDir/nix-store --query --requisites @storePaths|") or die;
-    
-    while (<READ>) {
-        chomp;
-        die "bad: $_" unless /^\//;
-        push @allStorePaths, $_;
-    }
-
-    close READ or die "nix-store failed: $?";
-
-
-    # Ask the remote host which paths are invalid.
-    open(READ, "ssh $sshHost @sshOpts nix-store --check-validity --print-invalid @allStorePaths|");
-    my @missing = ();
-    while (<READ>) {
-        chomp;
-        push @missing, $_;
-    }
-    close READ or die;
-
-
-    # Export the store paths and import them on the remote machine.
-    if (scalar @missing > 0) {
-        print STDERR "copying these missing paths:\n";
-        print STDERR "  $_\n" foreach @missing;
-        my $extraOpts = "";
-        $extraOpts .= "--sign" if $sign == 1;
-        system("nix-store --export $extraOpts @missing $compressor | ssh $sshHost @sshOpts '$decompressor nix-store --import'") == 0
-            or die "copying store paths to remote machine `$sshHost' failed: $?";
-    }
-
-}
-
-
-else { # Copy FROM the remote machine.
-
-    # Query the closure of the given store paths on the remote
-    # machine.  Paths are assumed to be store paths; there is no
-    # resolution (following of symlinks).
-    my $pid = open(READ,
-        "ssh @sshOpts $sshHost nix-store --query --requisites @storePaths|") or die;
-    
-    my @allStorePaths;
-
-    while (<READ>) {
-        chomp;
-        die "bad: $_" unless /^\//;
-        push @allStorePaths, $_;
-    }
-
-    close READ or die "nix-store on remote machine `$sshHost' failed: $?";
-
-
-    # What paths are already valid locally?
-    open(READ, "@bindir@/nix-store --check-validity --print-invalid @allStorePaths|");
-    my @missing = ();
-    while (<READ>) {
-        chomp;
-        push @missing, $_;
-    }
-    close READ or die;
-    
-
-    # Export the store paths on the remote machine and import them on locally.
-    if (scalar @missing > 0) {
-        print STDERR "copying these missing paths:\n";
-        print STDERR "  $_\n" foreach @missing;
-        my $extraOpts = "";
-        $extraOpts .= "--sign" if $sign == 1;
-        system("ssh $sshHost @sshOpts 'nix-store --export $extraOpts @missing $compressor' | $decompressor @bindir@/nix-store --import") == 0
-            or die "copying store paths from remote machine `$sshHost' failed: $?";
-    }
-
-}

scripts/nix-http-export.cgi.in

@@ -1,51 +0,0 @@
-#! /bin/sh
-
-export HOME=/tmp
-export NIX_REMOTE=daemon
-
-TMP_DIR="${TMP_DIR:-/tmp/nix-export}"
-
-@coreutils@/mkdir -p "$TMP_DIR" || true
-@coreutils@/chmod a+r "$TMP_DIR"
-
-needed_path="?$QUERY_STRING"
-needed_path="${needed_path#*[?&]needed_path=}"
-needed_path="${needed_path%%&*}"
-#needed_path="$(echo $needed_path  | ./unhttp)"
-needed_path="${needed_path//%2B/+}"
-needed_path="${needed_path//%3D/=}"
-
-echo needed_path: "$needed_path" >&2
-
-NIX_STORE="${NIX_STORE_DIR:-/nix/store}"
-
-echo NIX_STORE: "${NIX_STORE}" >&2
-
-full_path="${NIX_STORE}"/"$needed_path"
-
-if [ "$needed_path" != "${needed_path%.drv}" ]; then
-	echo "Status: 403 You should create the derivation file yourself"
-	echo "Content-Type: text/plain"
-	echo
-	echo "Refusing to disclose derivation contents"
-	exit
-fi
-
-if @bindir@/nix-store --check-validity "$full_path"; then
-	if ! [ -e nix-export/"$needed_path".nar.gz ]; then
-		@bindir@/nix-store --export "$full_path" | @gzip@ > "$TMP_DIR"/"$needed_path".nar.gz
-		@coreutils@/ln -fs  "$TMP_DIR"/"$needed_path".nar.gz nix-export/"$needed_path".nar.gz 
-	fi;
-	echo "Status: 301 Moved"
-	echo "Location: nix-export/"$needed_path".nar.gz"
-	echo
-else 
-	echo "Status: 404 No such path found"
-	echo "Content-Type: text/plain"
-	echo
-	echo "Path not found:"
-	echo "$needed_path"
-	echo "checked:"
-	echo "$full_path"
-fi
-

scripts/nix-install-package.in

@@ -1,109 +1,28 @@
 #! @perl@ -w
 
 use strict;
-use File::Temp qw(tempdir);
+use POSIX qw(tmpnam);
 
-my $binDir = $ENV{"NIX_BIN_DIR"} || "@bindir@";
-
-
-sub usageError {
-    print STDERR <<EOF;
-Usage: nix-install-package (FILE | --url URL)
-
-Install a Nix Package (.nixpkg) either directly from FILE or by
-downloading it from URL.
-
-Flags:
-  --profile / -p LINK: install into the specified profile
-  --non-interactive: don't run inside a new terminal
-EOF
-    ; # '
-    exit 1;
-}
-
-
-# Parse the command line arguments.
-my @args = @ARGV;
-usageError if scalar @args == 0;
-
-my $source;
-my $fromURL = 0;
-my @extraNixEnvArgs = ();
-my $interactive = 1;
-
-while (scalar @args) {
-    my $arg = shift @args;
-    if ($arg eq "--help") {
-        usageError;
-    }
-    elsif ($arg eq "--url") {
-        $fromURL = 1;
-    }
-    elsif ($arg eq "--profile" || $arg eq "-p") {
-        my $profile = shift @args;
-        usageError if !defined $profile;
-        push @extraNixEnvArgs, "-p", $profile;
-    }
-    elsif ($arg eq "--non-interactive") {
-        $interactive = 0;
-    }
-    else {
-        $source = $arg;
-    }
-}
-
-usageError unless defined $source;
+my $pkgFile = $ARGV[0];
+die unless defined $pkgFile;
 
 
 # Re-execute in a terminal, if necessary, so that if we're executed
 # from a web browser, the user gets to see us.
-if ($interactive && !defined $ENV{"NIX_HAVE_TERMINAL"}) {
+if (!defined $ENV{"NIX_HAVE_TERMINAL"}) {
     $ENV{"NIX_HAVE_TERMINAL"} = "1";
     $ENV{"LD_LIBRARY_PATH"} = "";
-    foreach my $term ("xterm", "konsole", "gnome-terminal", "xterm") {
-        exec($term, "-e", "$binDir/nix-install-package", @ARGV);
-    }
+    exec("xterm", "-e", "@shell@", "-c", "@bindir@/nix-install-package '$pkgFile' || read");
     die "cannot execute `xterm'";
 }
 
 
-my $tmpDir = tempdir("nix-install-package.XXXXXX", CLEANUP => 1, TMPDIR => 1)
-    or die "cannot create a temporary directory";
-
-
-sub barf {
-    my $msg = shift;
-    print "$msg\n";
-    <STDIN> if $interactive;
-    exit 1;
-}
-
-
-# Download the package description, if necessary.
-my $pkgFile = $source;
-if ($fromURL) {
-    $pkgFile = "$tmpDir/tmp.nixpkg";
-    system("@curl@", "--silent", $source, "-o", $pkgFile) == 0
-        or barf "curl failed: $?";
-}
-
-
 # Read and parse the package file.
-open PKGFILE, "<$pkgFile" or barf "cannot open `$pkgFile': $!";
+open PKGFILE, "<$pkgFile" or die "cannot open `$pkgFile': $!";
 my $contents = <PKGFILE>;
 close PKGFILE;
 
-my $urlRE = "(?: [a-zA-Z][a-zA-Z0-9\+\-\.]*\:[a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~\*\']+ )";
-my $nameRE = "(?: [A-Za-z0-9\+\-\.\_\?\=]+ )"; # see checkStoreName()
-my $systemRE = "(?: [A-Za-z0-9\+\-\_]+ )";
-my $pathRE = "(?: \/ [\/A-Za-z0-9\+\-\.\_\?\=]* )";
-
-# Note: $pathRE doesn't check that whether we're looking at a valid
-# store path.  We'll let nix-env do that.
-
-$contents =~
-    / ^ \s* (\S+) \s+ ($urlRE) \s+ ($nameRE) \s+ ($systemRE) \s+ ($pathRE) \s+ ($pathRE) /x
-    or barf "invalid package contents";
+$contents =~ /^\s*(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)/ or die "invalid package contents";
 my $version = $1;
 my $manifestURL = $2;
 my $drvName = $3;
@@ -111,34 +30,22 @@ my $system = $4;
 my $drvPath = $5;
 my $outPath = $6;
 
-barf "invalid package version `$version'" unless $version eq "NIXPKG1";
+die "invalid package version `$version'" unless $version eq "NIXPKG1";
 
 
-if ($interactive) {
-    # Ask confirmation.
-    print "Do you want to install `$drvName' (Y/N)? ";
-    my $reply = <STDIN>;
-    chomp $reply;
-    exit if $reply ne "y" && $reply ne "Y";
-}
-
-
-# Store the manifest in the temporary directory so that we don't
-# pollute /nix/var/nix/manifests.
-$ENV{NIX_MANIFESTS_DIR} = $tmpDir;
-
+# Ask confirmation.
+print "Do you want to install `$drvName' (Y/N)? ";
+my $reply = <STDIN>;
+chomp $reply;
+exit if $reply ne "y" && $reply ne "Y";
 
 print "\nPulling manifests...\n";
-system("$binDir/nix-pull", $manifestURL) == 0
-    or barf "nix-pull failed: $?";
-
+system "@bindir@/nix-pull '$manifestURL'";
+die if $? != 0;
 
 print "\nInstalling package...\n";
-system("$binDir/nix-env", "--install", $outPath, "--force-name", $drvName, @extraNixEnvArgs) == 0
-    or barf "nix-env failed: $?";
+system "@bindir@/nix-env -i '$outPath'";
+die if $? != 0;
 
-
-if ($interactive) {
-    print "\nInstallation succeeded! Press Enter to continue.\n";
-    <STDIN>;
-}
+print "\nInstallation succeeded! Press Enter to continue.\n";
+<STDIN>;

scripts/nix-prefetch-url.in

@@ -3,12 +3,9 @@
 url=$1
 expHash=$2
 
-# needed to make it work on NixOS
-export PATH=$PATH:@coreutils@
-
 hashType=$NIX_HASH_ALGO
 if test -z "$hashType"; then
-    hashType=sha256
+    hashType=md5
 fi
 
 hashFormat=
@@ -21,10 +18,7 @@ if test -z "$url"; then
     exit 1
 fi
 
-# Handle escaped characters in the URI.  `+', `=' and `?' are the only
-# characters that are valid in Nix store path names but have a special
-# meaning in URIs.
-name=$(basename "$url" | @sed@ -e 's/%2b/+/g' -e 's/%3d/=/g' -e 's/%3f/\?/g')
+name=$(basename "$url")
 if test -z "$name"; then echo "invalid url"; exit 1; fi
 
 
@@ -39,116 +33,29 @@ if test -n "$expHash"; then
 fi
 
 
-mkTempDir() {
-    if test -n "$tmpPath"; then return; fi
-    local i=0
-    while true; do
-        if test -z "$TMPDIR"; then TMPDIR=/tmp; fi
-        tmpPath=$TMPDIR/nix-prefetch-url-$$-$i
-        if mkdir "$tmpPath"; then break; fi
-        # !!! to bad we can't check for ENOENT in mkdir, so this check
-        # is slightly racy (it bombs out if somebody just removed
-        # $tmpPath...).
-        if ! test -e "$tmpPath"; then exit 1; fi
-        i=$((i + 1))
-    done
-    trap removeTempDir EXIT SIGINT SIGQUIT
-}
-
-removeTempDir() {
-    if test -n "$tmpPath"; then
-        rm -rf "$tmpPath" || true
-    fi
-}
-
-
-doDownload() {
-    @curl@ $cacheFlags --fail --location --max-redirs 20 --disable-epsv \
-        --cookie-jar $tmpPath/cookies "$url" -o $tmpFile
-}
-
-
-# Hack to support the mirror:// scheme from Nixpkgs.
-if test "${url:0:9}" = "mirror://"; then
-    if test -z "$NIXPKGS_ALL"; then
-        echo "Resolving mirror:// URLs requires Nixpkgs.  Please point \$NIXPKGS_ALL at a Nixpkgs tree." >&2
-        exit 1
-    fi
-
-    mkTempDir
-    nix-build "$NIXPKGS_ALL" -A resolveMirrorURLs --argstr url "$url" -o $tmpPath/urls > /dev/null
-
-    expanded=($(cat $tmpPath/urls))
-    if test "${#expanded[*]}" = 0; then
-        echo "$0: cannot resolve $url." >&2
-        exit 1
-    fi
-
-    echo "$url expands to ${expanded[*]} (using ${expanded[0]})" >&2
-    url="${expanded[0]}"
-fi
-
-
 # If we don't know the hash or a file with that hash doesn't exist,
 # download the file and add it to the store.
 if test -z "$finalPath"; then
 
-    mkTempDir
+    tmpPath=/tmp/nix-prefetch-url-$$ # !!! security?
     tmpFile=$tmpPath/$name
-
-    # Optionally do timestamp-based caching of the download.
-    # Actually, the only thing that we cache in $NIX_DOWNLOAD_CACHE is
-    # the hash and the timestamp of the file at $url.  The caching of
-    # the file *contents* is done in Nix store, where it can be
-    # garbage-collected independently.
-    if test -n "$NIX_DOWNLOAD_CACHE"; then
-        echo -n "$url" > $tmpPath/url
-        urlHash=$(@bindir@/nix-hash --type sha256 --base32 --flat $tmpPath/url)
-        echo "$url" > "$NIX_DOWNLOAD_CACHE/$urlHash.url"
-        cachedHashFN="$NIX_DOWNLOAD_CACHE/$urlHash.$hashType"
-        cachedTimestampFN="$NIX_DOWNLOAD_CACHE/$urlHash.stamp"
-        cacheFlags="--remote-time"
-        if test -e "$cachedTimestampFN" -a -e "$cachedHashFN"; then
-            # Only download the file if it is newer than the cached version.
-            cacheFlags="$cacheFlags --time-cond $cachedTimestampFN"
-        fi
-    fi
+    mkdir $tmpPath
 
     # Perform the download.
-    doDownload
+    @curl@ --fail --location --max-redirs 20 "$url" > $tmpFile
 
-    if test -n "$NIX_DOWNLOAD_CACHE" -a ! -e $tmpFile; then
-        # Curl didn't create $tmpFile, so apparently there's no newer
-        # file on the server.
-        hash=$(cat $cachedHashFN)
-        finalPath=$(@bindir@/nix-store --print-fixed-path "$hashType" "$hash" "$name") 
-        if ! @bindir@/nix-store --check-validity "$finalPath" 2> /dev/null; then
-            echo "cached contents of \`$url' disappeared, redownloading..." >&2
-            finalPath=
-            cacheFlags="--remote-time"
-            doDownload
-        fi
-    fi
+    # Compute the hash.
+    hash=$(@bindir@/nix-hash --type "$hashType" $hashFormat --flat $tmpFile)
+    if ! test -n "$QUIET"; then echo "hash is $hash" >&2; fi
 
-    if test -z "$finalPath"; then
+    # Add the downloaded file to the Nix store.
+    finalPath=$(@bindir@/nix-store --add-fixed "$hashType" $tmpFile)
 
-        # Compute the hash.
-        hash=$(@bindir@/nix-hash --type "$hashType" $hashFormat --flat $tmpFile)
-        if ! test -n "$QUIET"; then echo "hash is $hash" >&2; fi
+    if test -n "$tmpPath"; then rm -rf $tmpPath || true; fi
 
-        if test -n "$NIX_DOWNLOAD_CACHE"; then
-            echo $hash > $cachedHashFN
-            touch -r $tmpFile $cachedTimestampFN
-        fi
-
-        # Add the downloaded file to the Nix store.
-        finalPath=$(@bindir@/nix-store --add-fixed "$hashType" $tmpFile)
-
-        if test -n "$expHash" -a "$expHash" != "$hash"; then
-            echo "hash mismatch for URL \`$url'" >&2
-            exit 1
-        fi
-        
+    if test -n "$expHash" -a "$expHash" != "$hash"; then
+        echo "hash mismatch for URL \`$url'"
+        exit 1
     fi
 fi
 

scripts/nix-profile.sh.in

@@ -2,17 +2,10 @@ if test -n "$HOME"; then
     NIX_LINK="$HOME/.nix-profile"
 
     if ! test -L "$NIX_LINK"; then
-        echo "creating $NIX_LINK" >&2
+        echo "creating $NIX_LINK"
         _NIX_DEF_LINK=@localstatedir@/nix/profiles/default
-        @coreutils@/ln -s "$_NIX_DEF_LINK" "$NIX_LINK"
+        ln -s "$_NIX_DEF_LINK" "$NIX_LINK"
     fi
 
-    export PATH=$NIX_LINK/bin:$PATH
-fi
-
-# This is a quick hack to make fontconfig-based packages in Nixpkgs
-# work out of the box on non-NixOS systems.  Of course, we should
-# really fix fontconfig...
-if test -z "$FONTCONFIG_FILE" -a -e /etc/fonts/fonts.conf; then
-    export FONTCONFIG_FILE=/etc/fonts/fonts.conf
+    export PATH=$NIX_LINK/bin:@prefix@/bin:$PATH
 fi

scripts/nix-pull.in

@@ -1,87 +1,49 @@
 #! @perl@ -w -I@libexecdir@/nix
 
 use strict;
-use File::Temp qw(tempdir);
+use IPC::Open2;
+use POSIX qw(tmpnam);
 use readmanifest;
 
-my $tmpDir = tempdir("nix-pull.XXXXXX", CLEANUP => 1, TMPDIR => 1)
-    or die "cannot create a temporary directory";
+my $tmpdir;
+do { $tmpdir = tmpnam(); }
+until mkdir $tmpdir, 0777;
 
-my $binDir = $ENV{"NIX_BIN_DIR"} || "@bindir@";
-my $libexecDir = ($ENV{"NIX_LIBEXEC_DIR"} or "@libexecdir@");
-my $storeDir = ($ENV{"NIX_STORE_DIR"} or "@storedir@");
-my $stateDir = ($ENV{"NIX_STATE_DIR"} or "@localstatedir@/nix");
-my $manifestDir = ($ENV{"NIX_MANIFESTS_DIR"} or "$stateDir/manifests");
+my $manifest = "$tmpdir/manifest";
+
+END { unlink $manifest; rmdir $tmpdir; }
+
+my $binDir = $ENV{"NIX_BIN_DIR"};
+$binDir = "@bindir@" unless defined $binDir;
+
+my $libexecDir = $ENV{"NIX_LIBEXEC_DIR"};
+$libexecDir = "@libexecdir@" unless defined $libexecDir;
+
+my $stateDir = $ENV{"NIX_STATE_DIR"};
+$stateDir = "@localstatedir@/nix" unless defined $stateDir;
 
 
 # Prevent access problems in shared-stored installations.
 umask 0022;
 
 
-# Create the manifests directory if it doesn't exist.
-if (! -e $manifestDir) {
-    mkdir $manifestDir, 0755 or die "cannot create directory `$manifestDir'";
-}
-
-
-# Process the URLs specified on the command line.
+# Obtain URLs either from the command line or from a configuration file.
 my %narFiles;
-my %localPaths;
 my %patches;
-
-my $skipWrongStore = 0;
-
-sub downloadFile {
-    my $url = shift;
-    $ENV{"PRINT_PATH"} = 1;
-    $ENV{"QUIET"} = 1;
-    my ($dummy, $path) = `$binDir/nix-prefetch-url '$url'`;
-    die "cannot fetch `$url'" if $? != 0;
-    die "nix-prefetch-url did not return a path" unless defined $path;
-    chomp $path;
-    return $path;
-}
+my %successors;
 
 sub processURL {
     my $url = shift;
 
     $url =~ s/\/$//;
+    print "obtaining list of Nix archives at $url...\n";
 
-    my $manifest;
+    system("@curl@ --fail --silent --show-error --location --max-redirs 20 " .
+           "'$url' > '$manifest'") == 0
+           or die "curl failed: $?";
 
-    # First see if a bzipped manifest is available.
-    if (system("@curl@ --fail --silent --head '$url'.bz2 > /dev/null") == 0) {
-        print "fetching list of Nix archives at `$url.bz2'...\n";
-        my $bzipped = downloadFile "$url.bz2";
-
-        $manifest = "$tmpDir/MANIFEST";
-
-        system("@bunzip2@ < $bzipped > $manifest") == 0
-            or die "cannot decompress manifest";
-
-        $manifest = (`$binDir/nix-store --add $manifest`
-                     or die "cannot copy $manifest to the store");
-        chomp $manifest;
-    }
-
-    # Otherwise, just get the uncompressed manifest.
-    else {
-        print "obtaining list of Nix archives at `$url'...\n";
-        $manifest = downloadFile $url;
-    }
-
-    my $version = readManifest($manifest, \%narFiles, \%localPaths, \%patches);
-    
-    die "`$url' is not a manifest or it is too old (i.e., for Nix <= 0.7)\n" if $version < 3;
-    die "manifest `$url' is too new\n" if $version >= 5;
-
-    if ($skipWrongStore) {
-        foreach my $path (keys %narFiles) {
-            if (substr($path, 0, length($storeDir) + 1) ne "$storeDir/") {
-                print STDERR "warning: manifest `$url' assumes a Nix store at a different location than $storeDir, skipping...\n";
-                exit 0;
-            }
-        }
+    if (readManifest($manifest, \%narFiles, \%patches, \%successors) < 3) {
+        die "manifest `$url' is too old (i.e., for Nix <= 0.7)\n";
     }
 
     my $baseName = "unnamed";
@@ -92,42 +54,48 @@ sub processURL {
     my $hash = `$binDir/nix-hash --flat '$manifest'`
         or die "cannot hash `$manifest'";
     chomp $hash;
-
-    my $urlFile = "$manifestDir/$baseName-$hash.url";
-    open URL, ">$urlFile" or die "cannot create `$urlFile'";
-    print URL "$url";
-    close URL;
     
-    my $finalPath = "$manifestDir/$baseName-$hash.nixmanifest";
-
-    unlink $finalPath if -e $finalPath;
-        
-    symlink("$manifest", "$finalPath")
-        or die "cannot link `$finalPath to `$manifest'";
-
-    # Delete all old manifests downloaded from this URL.
-    for my $urlFile2 (glob "$manifestDir/*.url") {
-        next if $urlFile eq $urlFile2;
-        open URL, "<$urlFile2" or die;
-        my $url2 = <URL>;
-        chomp $url2;
-        close URL;
-        next unless $url eq $url2;
-        my $base = $urlFile2; $base =~ s/.url$//;
-        unlink "${base}.url";
-        unlink "${base}.nixmanifest";
-    }
+    my $finalPath = "$stateDir/manifests/$baseName-$hash.nixmanifest";
+    
+    system("mv -f '$manifest' '$finalPath'") == 0
+        or die "cannot move `$manifest' to `$finalPath";
 }
 
 while (@ARGV) {
     my $url = shift @ARGV;
-    if ($url eq "--skip-wrong-store") {
-        $skipWrongStore = 1;
-    } else {
-        processURL $url;
-    }
+    processURL $url;
 }
 
 
-my $size = scalar (keys %narFiles) + scalar (keys %localPaths);
+my $size = scalar (keys %narFiles);
 print "$size store paths in manifest\n";
+
+
+# Register all substitutes.
+print STDERR "registering substitutes...\n";
+
+my $pid = open2(\*READ, \*WRITE, "$binDir/nix-store --register-substitutes")
+    or die "cannot run nix-store";
+
+close READ;
+
+foreach my $storePath (keys %narFiles) {
+    my $narFileList = $narFiles{$storePath};
+    foreach my $narFile (@{$narFileList}) {
+        print WRITE "$storePath\n";
+        print WRITE "$narFile->{deriver}\n";
+        print WRITE "$libexecDir/nix/download-using-manifests.pl\n";
+        print WRITE "0\n";
+        my @references = split " ", $narFile->{references};
+        my $count = scalar @references;
+        print WRITE "$count\n";
+        foreach my $reference (@references) {
+            print WRITE "$reference\n";
+        }
+    }
+}
+
+close WRITE;
+
+waitpid $pid, 0;
+$? == 0 or die "nix-store failed";

scripts/nix-push.in

@@ -1,22 +1,27 @@
 #! @perl@ -w -I@libexecdir@/nix
 
 use strict;
-use File::Temp qw(tempdir);
+use IPC::Open2;
+use POSIX qw(tmpnam);
 use readmanifest;
 
 my $hashAlgo = "sha256";
 
-my $tmpDir = tempdir("nix-push.XXXXXX", CLEANUP => 1, TMPDIR => 1)
-    or die "cannot create a temporary directory";
+my $tmpdir;
+do { $tmpdir = tmpnam(); }
+until mkdir $tmpdir, 0777;
 
-my $nixExpr = "$tmpDir/create-nars.nix";
-my $manifest = "$tmpDir/MANIFEST";
+my $nixfile = "$tmpdir/create-nars.nix";
+my $manifest = "$tmpdir/MANIFEST";
+
+END { unlink $manifest; unlink $nixfile; rmdir $tmpdir; }
 
 my $curl = "@curl@ --fail --silent";
 my $extraCurlFlags = ${ENV{'CURL_FLAGS'}};
 $curl = "$curl $extraCurlFlags" if defined $extraCurlFlags;
 
-my $binDir = $ENV{"NIX_BIN_DIR"} || "@bindir@";
+my $binDir = $ENV{"NIX_BIN_DIR"};
+$binDir = "@bindir@" unless defined $binDir;
 
 my $dataDir = $ENV{"NIX_DATA_DIR"};
 $dataDir = "@datadir@" unless defined $dataDir;
@@ -27,42 +32,20 @@ my $localCopy;
 my $localArchivesDir;
 my $localManifestFile;
 
-my $targetArchivesUrl;
-
 my $archivesPutURL;
 my $archivesGetURL;
 my $manifestPutURL;
 
-sub showSyntax {
-    print STDERR <<EOF
-Usage: nix-push --copy ARCHIVES_DIR MANIFEST_FILE PATHS...
-   or: nix-push ARCHIVES_PUT_URL ARCHIVES_GET_URL MANIFEST_PUT_URL PATHS...
-
-`nix-push' copies or uploads the closure of PATHS to the given
-destination.
-EOF
-    ; # `
-    exit 1;
-}
-
-showSyntax if scalar @ARGV < 1;
-
 if ($ARGV[0] eq "--copy") {
-    showSyntax if scalar @ARGV < 3;
+    die "syntax: nix-push --copy ARCHIVES_DIR MANIFEST_FILE PATHS...\n" if scalar @ARGV < 3;
     $localCopy = 1;
     shift @ARGV;
     $localArchivesDir = shift @ARGV;
     $localManifestFile = shift @ARGV;
-    if ($ARGV[0] eq "--target") {
-       shift @ARGV;
-       $targetArchivesUrl = shift @ARGV;
-    }
-    else {
-       $targetArchivesUrl = "file://$localArchivesDir";
-    }
 }
 else {
-    showSyntax if scalar @ARGV < 3;
+    die "syntax: nix-push ARCHIVES_PUT_URL ARCHIVES_GET_URL " .
+        "MANIFEST_PUT_URL PATHS...\n" if scalar @ARGV < 3;
     $localCopy = 0;
     $archivesPutURL = shift @ARGV;
     $archivesGetURL = shift @ARGV;
@@ -79,17 +62,20 @@ foreach my $path (@ARGV) {
 
     # Get all paths referenced by the normalisation of the given 
     # Nix expression.
-    my $pid = open(READ,
+    my $pid = open2(\*READ, \*WRITE,
         "$binDir/nix-store --query --requisites --force-realise " .
-        "--include-outputs '$path'|") or die;
+        "--include-outputs '$path'") or die;
+    close WRITE;
     
     while (<READ>) {
         chomp;
         die "bad: $_" unless /^\//;
         $storePaths{$_} = "";
     }
-
-    close READ or die "nix-store failed: $?";
+    close READ;
+    
+    waitpid $pid, 0;
+    $? == 0 or die "nix-store failed";
 }
 
 my @storePaths = keys %storePaths;
@@ -97,16 +83,16 @@ my @storePaths = keys %storePaths;
 
 # For each path, create a Nix expression that turns the path into
 # a Nix archive.
-open NIX, ">$nixExpr";
+open NIX, ">$nixfile";
 print NIX "[";
 
 foreach my $storePath (@storePaths) {
-    die unless ($storePath =~ /\/[0-9a-z]{32}[^\"\\\$]*$/);
+    die unless ($storePath =~ /\/[0-9a-z]{32}.*$/);
 
     # Construct a Nix expression that creates a Nix archive.
     my $nixexpr = 
         "((import $dataDir/nix/corepkgs/nar/nar.nix) " .
-        "{storePath = builtins.storePath \"$storePath\"; system = \"@system@\"; hashAlgo = \"$hashAlgo\";}) ";
+        "{path = \"$storePath\"; system = \"@system@\"; hashAlgo = \"$hashAlgo\";}) ";
     
     print NIX $nixexpr;
 }
@@ -115,20 +101,24 @@ print NIX "]";
 close NIX;
 
 
-# Instantiate store derivations from the Nix expression.
+# Instantiate store expressions from the Nix expression.
 my @storeExprs;
-print STDERR "instantiating store derivations...\n";
-my $pid = open(READ, "$binDir/nix-instantiate $nixExpr|")
+print STDERR "instantiating store expressions...\n";
+my $pid = open2(\*READ, \*WRITE, "$binDir/nix-instantiate $nixfile")
     or die "cannot run nix-instantiate";
+close WRITE;
 while (<READ>) {
     chomp;
     die unless /^\//;
     push @storeExprs, $_;
 }
-close READ or die "nix-instantiate failed: $?";
+close READ;
+
+waitpid $pid, 0;
+$? == 0 or die "nix-instantiate failed";
 
 
-# Build the derivations.
+# Realise the store expressions.
 print STDERR "creating archives...\n";
 
 my @narPaths;
@@ -140,14 +130,18 @@ while (scalar @tmp > 0) {
     my @tmp2 = @tmp[0..$n - 1];
     @tmp = @tmp[$n..scalar @tmp - 1];
 
-    my $pid = open(READ, "$binDir/nix-store --realise @tmp2|")
+    my $pid = open2(\*READ, \*WRITE, "$binDir/nix-store --realise @tmp2")
         or die "cannot run nix-store";
+    close WRITE;
     while (<READ>) {
         chomp;
         die unless (/^\//);
         push @narPaths, "$_";
     }
-    close READ or die "nix-store failed: $?";
+    close READ;
+
+    waitpid $pid, 0;
+    $? == 0 or die "nix-store failed";
 }
 
 
@@ -197,7 +191,7 @@ for (my $n = 0; $n < scalar @storePaths; $n++) {
 
     my $url;
     if ($localCopy) {
-        $url = "$targetArchivesUrl/$narName";
+        $url = "file://$localArchivesDir/$narName";
     } else {
         $url = "$archivesGetURL/$narName";
     }
@@ -218,14 +212,13 @@ writeManifest $manifest, \%narFiles, \%patches;
 sub copyFile {
     my $src = shift;
     my $dst = shift;
-    my $tmp = "$dst.tmp.$$";
-    system("@coreutils@/cp", $src, $tmp) == 0 or die "cannot copy file";
-    rename($tmp, $dst) or die "cannot rename file: $!";
+    system("cp '$src' '$dst.tmp'") == 0 or die "cannot copy file";
+    rename("$dst.tmp", "$dst") or die "cannot rename file";
 }
 
 
-# Upload/copy the archives.
-print STDERR "uploading/copying archives...\n";
+# Upload the archives.
+print STDERR "uploading archives...\n";
 
 sub archiveExists {
     my $name = shift;
@@ -239,12 +232,9 @@ foreach my $narArchive (@narArchives) {
     my $basename = $1;
 
     if ($localCopy) {
-        # Since nix-push creates $dst atomically, if it exists we
-        # don't have to copy again.
-        my $dst = "$localArchivesDir/$basename";
         if (! -f "$localArchivesDir/$basename") {
             print STDERR "  $narArchive\n";
-            copyFile $narArchive, $dst;
+            copyFile $narArchive, "$localArchivesDir/$basename";
         }
     }
     else {
@@ -262,12 +252,8 @@ foreach my $narArchive (@narArchives) {
 print STDERR "uploading manifest...\n";
 if ($localCopy) {
     copyFile $manifest, $localManifestFile;
-    copyFile "$manifest.bz2", "$localManifestFile.bz2";
 } else {
-    system("$curl --show-error --upload-file " .
+    system("$curl  --show-error --upload-file " .
            "'$manifest' '$manifestPutURL' > /dev/null") == 0 or
            die "curl failed on $manifest: $?";
-    system("$curl --show-error --upload-file " .
-           "'$manifest'.bz2 '$manifestPutURL'.bz2 > /dev/null") == 0 or
-           die "curl failed on $manifest: $?";
 }

scripts/nix-reduce-build.in

@@ -1,171 +0,0 @@
-#! @shell@
-
-WORKING_DIRECTORY=$(mktemp -d "${TMPDIR:-/tmp}"/nix-reduce-build-XXXXXX);
-cd "$WORKING_DIRECTORY";
-
-if test -z "$1" || test "a--help" = "a$1" ; then
-	echo 'nix-reduce-build (paths or Nix expressions) -- (package sources)' >&2
-	echo As in: >&2
-	echo nix-reduce-build /etc/nixos/nixos -- ssh://user@somewhere.nowhere.example.org >&2
-	echo nix-reduce-build /etc/nixos/nixos -- \\
-	echo "   " \''http://somewhere.nowhere.example.org/nix/nix-http-export.cgi?needed_path='\' >&2
-	echo "  store path name will be added into the end of the URL" >&2
-	echo nix-reduce-build /etc/nixos/nixos -- file://home/user/nar/ >&2
-	echo "  that should be a directory where gzipped 'nix-store --export' ">&2
-	echo "  files are located (they should have .nar.gz extension)"  >&2
-	echo "        Or all together: " >&2
-	echo -e nix-reduce-build /expr.nix /e2.nix -- \\\\\\\n\
-	"    ssh://a@b.example.com http://n.example.com/get-nar?q= file://nar/" >&2
-	echo "        Also supports best-effort local builds of failing expression set:" >&2
-	echo "nix-reduce-build /e.nix -- nix-daemon:// nix-self://" >&2
-	echo "  nix-daemon:// builds using daemon"
-	echo "  nix-self:// builds directly using nix-store from current installation" >&2
-	echo "  nix-daemon-fixed:// and nix-self-fixed:// do the same, but only for" >&2;
-	echo "derivations with specified output hash (sha256, sha1 or md5)." >&2
-	echo "  nix-daemon-substitute:// and nix-self-substitute:// try to substitute" >&2;
-	echo "maximum amount of paths" >&2;
-	echo "  nix-daemon-build:// and nix-self-build:// try to build (not substitute)" >&2;
-	echo "maximum amount of paths" >&2;
-	echo "        If no package sources are specified, required paths are listed." >&2;
-	exit;
-fi;
-
-while ! test "$1" = "--" || test "$1" = "" ; do 
-	echo "$1" >> initial; >&2
-	shift;
-done
-shift;
-echo Will work on $(cat initial | wc -l) targets. >&2
-
-while read ; do
-	case "$REPLY" in 
-		${NIX_STORE_DIR:-/nix/store}/*)
-			echo "$REPLY" >> paths; >&2
-			;;
-		*)
-			(
-				IFS=: ;
-				nix-instantiate $REPLY >> paths;
-			);
-			;;
-	esac;
-done < initial;
-echo Proceeding $(cat paths | wc -l) paths. >&2
-
-while read; do
-	case "$REPLY" in
-		*.drv)
-			echo "$REPLY" >> derivers; >&2
-			;;
-		*)
-			nix-store --query --deriver "$REPLY" >>derivers;
-			;;
-	esac;
-done < paths;
-echo Found $(cat derivers | wc -l) derivers. >&2
-
-cat derivers | xargs nix-store --query -R > derivers-closure;
-echo Proceeding at most $(cat derivers-closure | wc -l) derivers. >&2
-
-cat derivers-closure | egrep '[.]drv$' | xargs nix-store --query --outputs > wanted-paths;
-cat derivers-closure | egrep -v '[.]drv$' >> wanted-paths;
-echo Prepared $(cat wanted-paths | wc -l) paths to get. >&2
-
-cat wanted-paths | xargs nix-store --check-validity --print-invalid > needed-paths;
-echo We need $(cat needed-paths | wc -l) paths. >&2
-
-egrep '[.]drv$' derivers-closure > critical-derivers;
-
-if test -z "$1" ; then
-	cat needed-paths;	
-fi;
-
-refresh_critical_derivers() {
-    echo "Finding needed derivers..." >&2;
-    cat critical-derivers | while read; do
-        if ! (nix-store --query --outputs "$REPLY" | xargs nix-store --check-validity &> /dev/null;); then
-            echo "$REPLY";
-        fi;
-    done > new-critical-derivers;
-    mv new-critical-derivers critical-derivers;
-    echo The needed paths are realized by $(cat critical-derivers | wc -l) derivers. >&2
-}
-
-build_here() {
-    cat critical-derivers | while read; do 
-        echo "Realising $REPLY using nix-daemon" >&2
-        @bindir@/nix-store -r "${REPLY}"
-    done;
-}
-
-try_to_substitute(){
-    cat needed-paths | while read ; do 
-        echo "Building $REPLY using nix-daemon" >&2
-        @bindir@/nix-store -r "${NIX_STORE_DIR:-/nix/store}/${REPLY##*/}"
-    done;
-}
-
-for i in "$@"; do 
-	sshHost="${i#ssh://}";
-	httpHost="${i#http://}";
-	httpsHost="${i#https://}";
-	filePath="${i#file:/}";
-	if [ "$i" != "$sshHost" ]; then
-		cat needed-paths | while read; do 
-			echo "Getting $REPLY and its closure over ssh" >&2
-			nix-copy-closure --from "$sshHost" --gzip "$REPLY" </dev/null || true; 
-		done;
-	elif [ "$i" != "$httpHost" ] || [ "$i" != "$httpsHost" ]; then
-		cat needed-paths | while read; do
-			echo "Getting $REPLY over http/https" >&2
-			curl ${BAD_CERTIFICATE:+-k} -L "$i${REPLY##*/}" | gunzip | nix-store --import;
-		done;
-	elif [ "$i" != "$filePath" ] ; then
-		cat needed-paths | while read; do 
-			echo "Installing $REPLY from file" >&2
-			gunzip < "$filePath/${REPLY##*/}".nar.gz | nix-store --import;
-		done;
-	elif [ "$i" = "nix-daemon://" ] ; then
-		NIX_REMOTE=daemon try_to_substitute;
-		refresh_critical_derivers;
-		NIX_REMOTE=daemon build_here;
-	elif [ "$i" = "nix-self://" ] ; then
-		NIX_REMOTE= try_to_substitute;
-		refresh_critical_derivers;
-		NIX_REMOTE= build_here;
-	elif [ "$i" = "nix-daemon-fixed://" ] ; then
-		refresh_critical_derivers;
-
-		cat critical-derivers | while read; do 
-			if egrep '"(md5|sha1|sha256)"' "$REPLY" &>/dev/null; then
-				echo "Realising $REPLY using nix-daemon" >&2
-				NIX_REMOTE=daemon @bindir@/nix-store -r "${REPLY}"
-			fi;
-		done;
-	elif [ "$i" = "nix-self-fixed://" ] ; then
-		refresh_critical_derivers;
-
-		cat critical-derivers | while read; do 
-			if egrep '"(md5|sha1|sha256)"' "$REPLY" &>/dev/null; then
-				echo "Realising $REPLY using direct Nix build" >&2
-				NIX_REMOTE= @bindir@/nix-store -r "${REPLY}"
-			fi;
-		done;
-	elif [ "$i" = "nix-daemon-substitute://" ] ; then
-		NIX_REMOTE=daemon try_to_substitute;
-	elif [ "$i" = "nix-self-substitute://" ] ; then
-		NIX_REMOTE= try_to_substitute;
-	elif [ "$i" = "nix-daemon-build://" ] ; then
-		refresh_critical_derivers;
-		NIX_REMOTE=daemon build_here;
-	elif [ "$i" = "nix-self-build://" ] ; then
-		refresh_critical_derivers;
-		NIX_REMOTE= build_here;
-	fi;
-	mv needed-paths wanted-paths;
-	cat wanted-paths | xargs nix-store --check-validity --print-invalid > needed-paths;
-	echo We still need $(cat needed-paths | wc -l) paths. >&2
-done;
-
-cd /
-rm -r "$WORKING_DIRECTORY"

scripts/optimise-store.pl

@@ -0,0 +1,69 @@
+#! /usr/bin/perl -w
+
+use strict;
+
+{ my $ofh = select STDOUT;
+  $| = 1;
+  select $ofh;
+}
+
+#my @paths = ("/nix/store/caef3a49150506d233f474322a824e50-glibc-2.3.3", "/nix/store/a8a9d585d1ad4b1bc911be7743b3b996-glibc-2.3.3");
+my @paths = ("/nix/store");
+
+my $tmpfile = "/tmp/nix-optimise-hash-list";
+#my $tmpfile = "/data/nix-optimise-hash-list";
+
+system("find @paths -type f -print0 | xargs -0 md5sum -- > $tmpfile") == 0
+    or die "cannot hash store files";
+
+system("sort $tmpfile > $tmpfile.sorted") == 0
+    or die "cannot sort list";
+
+open LIST, "<$tmpfile.sorted" or die;
+
+my $prevFile;
+my $prevHash;
+
+my $totalSpace = 0;
+my $savedSpace = 0;
+
+my $files = 0;
+
+while (<LIST>) {
+#    print "D";
+    /^([0-9a-f]*)\s+(.*)$/ or die;
+    my $curFile = $2;
+    my $curHash = $1;
+
+#    print "A";
+    my $fileSize = (stat $curFile)[7];
+#    print "B";
+#    my $fileSize = 1;
+    $totalSpace += $fileSize;
+
+    if (defined $prevHash && $curHash eq $prevHash) {
+        
+#        print "$curFile = $prevFile\n";
+
+        $savedSpace += $fileSize;
+        
+    } else {
+        $prevFile = $curFile;
+        $prevHash = $curHash;
+    }
+
+    print "." if ($files++ % 100 == 0);
+    #print ".";
+
+#    print "C";
+}
+
+print "\n";
+
+print "total space = $totalSpace\n";
+print "saved space = $savedSpace\n";
+my $savings = ($savedSpace / $totalSpace) * 100.0;
+print "savings = $savings %\n";
+
+
+close LIST;

scripts/prebuilts.conf

@@ -0,0 +1,2 @@
+# A list of URLs from where `nix-pull' obtain Nix archives if
+# no URL is specified on the command line.

scripts/readconfig.pm.in

@@ -1,17 +0,0 @@
-use strict;
-
-sub readConfig {
-    my %config;
-    my $config = "@sysconfdir@/nix/nix.conf";
-    return unless -f $config;
-    
-    open CONFIG, "<$config" or die "cannot open `$config'";
-    while (<CONFIG>) {
-        /^\s*([\w|-]+)\s*=\s*(.*)$/ or next;
-        $config{$1} = $2;
-        print "|$1| -> |$2|\n";
-    }
-    close CONFIG;
-}
-
-return 1;

scripts/readmanifest.pm.in

@@ -2,7 +2,10 @@ use strict;
 
 
 sub addPatch {
-    my ($patches, $storePath, $patch) = @_;
+    my $patches = shift;
+    my $storePath = shift;
+    my $patch = shift;
+    my $allowConflicts = shift;
 
     $$patches{$storePath} = []
         unless defined $$patches{$storePath};
@@ -11,9 +14,15 @@ sub addPatch {
 
     my $found = 0;
     foreach my $patch2 (@{$patchList}) {
-        $found = 1 if
-            $patch2->{url} eq $patch->{url} &&
-            $patch2->{basePath} eq $patch->{basePath};
+        if ($patch2->{url} eq $patch->{url}) {
+            if ($patch2->{hash} eq $patch->{hash}) {
+                $found = 1 if ($patch2->{basePath} eq $patch->{basePath});
+            } else {
+                die "conflicting hashes for URL $patch->{url}, " .
+                    "namely $patch2->{hash} and $patch->{hash}"
+                    unless $allowConflicts;
+            }
+        }
     }
     
     push @{$patchList}, $patch if !$found;
@@ -23,7 +32,12 @@ sub addPatch {
 
 
 sub readManifest {
-    my ($manifest, $narFiles, $localPaths, $patches) = @_;
+    my $manifest = shift;
+    my $narFiles = shift;
+    my $patches = shift;
+    my $successors = shift;
+    my $allowConflicts = shift;
+    $allowConflicts = 0 unless defined $allowConflicts;
 
     open MANIFEST, "<$manifest"
         or die "cannot open `$manifest': $!";
@@ -37,6 +51,7 @@ sub readManifest {
     my $url;
     my $hash;
     my $size;
+    my @preds;
     my $basePath;
     my $baseHash;
     my $patchType;
@@ -44,7 +59,6 @@ sub readManifest {
     my $references;
     my $deriver;
     my $hashAlgo;
-    my $copyFrom;
 
     while (<MANIFEST>) {
         chomp;
@@ -61,6 +75,7 @@ sub readManifest {
                 undef $url;
                 undef $hash;
                 undef $size;
+                @preds = ();
                 undef $narHash;
                 undef $basePath;
                 undef $baseHash;
@@ -84,7 +99,15 @@ sub readManifest {
 
                     my $found = 0;
                     foreach my $narFile (@{$narFileList}) {
-                        $found = 1 if $narFile->{url} eq $url;
+                        if ($narFile->{url} eq $url) {
+                            if ($narFile->{hash} eq $hash) {
+                                $found = 1;
+                            } else {
+                                die "conflicting hashes for URL $url, " .
+                                    "namely $narFile->{hash} and $hash"
+                                    unless $allowConflicts;
+                            }
+                        }
                     }
                     if (!$found) {
                         push @{$narFileList},
@@ -94,6 +117,10 @@ sub readManifest {
                             };
                     }
                 
+                    foreach my $p (@preds) {
+                        $$successors{$p} = $storePath;
+                    }
+
                 }
 
                 elsif ($type eq "patch") {
@@ -102,32 +129,16 @@ sub readManifest {
                         , basePath => $basePath, baseHash => $baseHash
                         , narHash => $narHash, patchType => $patchType
                         , hashAlgo => $hashAlgo
-                        };
-                }
-
-                elsif ($type eq "localPath") {
-
-                    $$localPaths{$storePath} = []
-                        unless defined $$localPaths{$storePath};
-
-                    my $localPathsList = $$localPaths{$storePath};
-
-                    # !!! remove duplicates
-                    
-                    push @{$localPathsList},
-                        { copyFrom => $copyFrom, references => $references
-                        , deriver => ""
-                        };
+                        }, $allowConflicts;
                 }
 
             }
             
             elsif (/^\s*StorePath:\s*(\/\S+)\s*$/) { $storePath = $1; }
-            elsif (/^\s*CopyFrom:\s*(\/\S+)\s*$/) { $copyFrom = $1; }
             elsif (/^\s*Hash:\s*(\S+)\s*$/) { $hash = $1; }
             elsif (/^\s*URL:\s*(\S+)\s*$/) { $url = $1; }
             elsif (/^\s*Size:\s*(\d+)\s*$/) { $size = $1; }
-            elsif (/^\s*SuccOf:\s*(\/\S+)\s*$/) { } # obsolete
+            elsif (/^\s*SuccOf:\s*(\/\S+)\s*$/) { push @preds, $1; }
             elsif (/^\s*BasePath:\s*(\/\S+)\s*$/) { $basePath = $1; }
             elsif (/^\s*BaseHash:\s*(\S+)\s*$/) { $baseHash = $1; }
             elsif (/^\s*Type:\s*(\S+)\s*$/) { $patchType = $1; }
@@ -149,8 +160,11 @@ sub readManifest {
 }
 
 
-sub writeManifest {
-    my ($manifest, $narFiles, $patches) = @_;
+sub writeManifest
+{
+    my $manifest = shift;
+    my $narFiles = shift;
+    my $patches = shift;
 
     open MANIFEST, ">$manifest.tmp"; # !!! check exclusive
 
@@ -158,15 +172,15 @@ sub writeManifest {
     print MANIFEST "  ManifestVersion: 3\n";
     print MANIFEST "}\n";
 
-    foreach my $storePath (sort (keys %{$narFiles})) {
+    foreach my $storePath (keys %{$narFiles}) {
         my $narFileList = $$narFiles{$storePath};
         foreach my $narFile (@{$narFileList}) {
             print MANIFEST "{\n";
             print MANIFEST "  StorePath: $storePath\n";
             print MANIFEST "  NarURL: $narFile->{url}\n";
-            print MANIFEST "  Hash: $narFile->{hash}\n" if defined $narFile->{hash};
+            print MANIFEST "  Hash: $narFile->{hash}\n";
             print MANIFEST "  NarHash: $narFile->{narHash}\n";
-            print MANIFEST "  Size: $narFile->{size}\n" if defined $narFile->{size};
+            print MANIFEST "  Size: $narFile->{size}\n";
             print MANIFEST "  References: $narFile->{references}\n"
                 if defined $narFile->{references} && $narFile->{references} ne "";
             print MANIFEST "  Deriver: $narFile->{deriver}\n"
@@ -175,7 +189,7 @@ sub writeManifest {
         }
     }
     
-    foreach my $storePath (sort (keys %{$patches})) {
+    foreach my $storePath (keys %{$patches}) {
         my $patchList = $$patches{$storePath};
         foreach my $patch (@{$patchList}) {
             print MANIFEST "patch {\n";
@@ -196,14 +210,6 @@ sub writeManifest {
 
     rename("$manifest.tmp", $manifest)
         or die "cannot rename $manifest.tmp: $!";
-
-
-    # Create a bzipped manifest.
-    system("@bzip2@ < $manifest > $manifest.bz2.tmp") == 0
-        or die "cannot compress manifest";
-
-    rename("$manifest.bz2.tmp", "$manifest.bz2")
-        or die "cannot rename $manifest.bz2.tmp: $!";
 }
 
 

scripts/remove-patches.pl

@@ -6,12 +6,14 @@ use readmanifest;
 for my $p (@ARGV) {
 
     my %narFiles;
-    my %localPaths;
     my %patches;
+    my %successors;
 
-    readManifest $p, \%narFiles, \%localPaths, \%patches;
+    readManifest $p,
+        \%narFiles, \%patches, \%successors;
 
     %patches = ();
     
-    writeManifest $p, \%narFiles, \%patches;
+    writeManifest $p,
+        \%narFiles, \%patches, \%successors;
 }

scripts/show-duplication.pl

@@ -1,73 +0,0 @@
-#! /usr/bin/perl -w
-
-if (scalar @ARGV != 1) {
-    print "syntax: show-duplication.pl PATH\n";
-    exit 1;
-}
-
-my $root = $ARGV[0];
-
-
-my $nameRE = "(?:(?:[A-Za-z0-9\+\_]|(?:-[^0-9]))+)";
-my $versionRE = "(?:[A-Za-z0-9\.\-]+)";
-
-
-my %pkgInstances;
-
-
-my $pid = open(PATHS, "-|") || exec "nix-store", "-qR", $root;
-while (<PATHS>) {
-    chomp;
-    /^.*\/[0-9a-z]*-(.*)$/;
-    my $nameVersion = $1;
-    $nameVersion =~ /^($nameRE)(-($versionRE))?$/;
-    $name = $1;
-    $version = $3;
-    $version = "(unnumbered)" unless defined $version;
-#    print "$nameVersion $name $version\n";
-    push @{$pkgInstances{$name}}, {version => $version, path => $_};
-}
-close PATHS or exit 1;
-
-
-sub pathSize {
-    my $path = shift;
-    my @st = lstat $path or die;
-
-    my $size = $st[7];
-
-    if (-d $path) {
-        opendir DIR, $path or die;
-        foreach my $name (readdir DIR) {
-            next if $name eq "." || $name eq "..";
-            $size += pathSize("$path/$name");
-        }
-    }
-    
-    return $size;
-}
-
-
-my $totalPaths = 0;
-my $totalSize = 0, $totalWaste = 0;
-
-foreach my $name (sort {scalar @{$pkgInstances{$b}} <=> scalar @{$pkgInstances{$a}}} (keys %pkgInstances)) {
-    print "$name ", scalar @{$pkgInstances{$name}}, "\n";
-    my $allSize = 0;
-    foreach my $x (sort {$a->{version} cmp $b->{version}} @{$pkgInstances{$name}}) {
-        $totalPaths++;
-        my $size = pathSize $x->{path};
-        $allSize += $size;
-        print "    $x->{version} $size\n";
-    }
-    my $avgSize = int($allSize / scalar @{$pkgInstances{$name}});
-    my $waste = $allSize - $avgSize;
-    $totalSize += $allSize;
-    $totalWaste += $waste;
-    print "    average $avgSize, waste $waste\n";
-}
-
-
-my $avgDupl = $totalPaths / scalar (keys %pkgInstances);
-my $wasteFactor = ($totalWaste / $totalSize) * 100;
-print "average package duplication $avgDupl, total size $totalSize, total waste $totalWaste, $wasteFactor% wasted\n";

scripts/ssh.pm

@@ -1,47 +0,0 @@
-use strict;
-use File::Temp qw(tempdir);
-
-our @sshOpts = split ' ', ($ENV{"NIX_SSHOPTS"} or "");
-
-my $sshStarted = 0;
-my $sshHost;
-
-# Open a master SSH connection to `host', unless there already is a
-# running master connection (as determined by `-O check').
-sub openSSHConnection {
-    my ($host) = @_;
-    die if $sshStarted;
-    $sshHost = $host;
-    return 1 if system("ssh $sshHost @sshOpts -O check 2> /dev/null") == 0;
-
-    my $tmpDir = tempdir("nix-ssh.XXXXXX", CLEANUP => 1, TMPDIR => 1)
-        or die "cannot create a temporary directory";
-    
-    push @sshOpts, "-S", "$tmpDir/control";
-
-    # Start the master.  We can't use the `-f' flag (fork into
-    # background after establishing the connection) because then the
-    # child continues to run if we are killed.  So instead make SSH
-    # print "started" when it has established the connection, and wait
-    # until we see that.
-    open SSH, "ssh $sshHost @sshOpts -M -N -o LocalCommand='echo started' -o PermitLocalCommand=yes |" or die;
-    while (<SSH>) {
-        chomp;
-        last if /started/;
-    }
-    
-    $sshStarted = 1;
-    return 1;
-}
-
-# Tell the master SSH client to exit.
-sub closeSSHConnection {
-    if ($sshStarted) {
-        system("ssh $sshHost @sshOpts -O exit 2> /dev/null") == 0
-            or warn "unable to stop SSH master: $?";
-    }
-}
-
-END { my $saved = $?; closeSSHConnection; $? = $saved; }
-
-return 1;

scripts/update-manifest.pl

@@ -8,10 +8,10 @@ die unless scalar @ARGV == 2;
 my $cache = $ARGV[0];
 my $manifest = $ARGV[1];
 my %narFiles;
-my %localPaths;
 my %patches;
+my %successors;
 
-readManifest $manifest, \%narFiles, \%localPaths, \%patches;
+readManifest $manifest, \%narFiles, \%patches, \%successors;
 
 foreach my $storePath (keys %narFiles) {
     my $narFileList = $narFiles{$storePath};
@@ -50,4 +50,4 @@ if (! -e "$manifest.backup") {
     system "mv --reply=no '$manifest' '$manifest.backup'";
 }
 
-writeManifest $manifest, \%narFiles, \%patches;
+writeManifest $manifest, \%narFiles, \%patches, \%successors;

src/Makefile.am

@@ -1,3 +1,15 @@
 SUBDIRS = bin2c boost libutil libstore libmain nix-store nix-hash \
- libexpr nix-instantiate nix-env nix-worker nix-setuid-helper \
- nix-log2xml bsdiff-4.3
+ libexpr nix-instantiate nix-env log2xml bsdiff-4.2
+
+EXTRA_DIST = aterm-helper.pl
+
+SETUID_PROGS = nix-store nix-instantiate nix-env
+install-exec-hook:
+if SETUID_HACK
+if HAVE_SETRESUID
+	cd $(DESTDIR)$(bindir) && chown @NIX_USER@ $(SETUID_PROGS) \
+	  && chgrp @NIX_GROUP@ $(SETUID_PROGS) && chmod ug+s $(SETUID_PROGS)
+else
+	cd $(DESTDIR)$(bindir) && chown root $(SETUID_PROGS) && chmod u+s $(SETUID_PROGS)
+endif
+endif

src/aterm-helper.pl

@@ -0,0 +1,153 @@
+#! /usr/bin/perl -w
+
+# This program generates C/C++ code for efficiently manipulating
+# ATerms.  It generates functions to build and match ATerms according
+# to a set of constructor definitions defined in a file read from
+# standard input.  A constructor is defined by a line with the
+# following format:
+#
+#   SYM | ARGS | TYPE | FUN?
+#
+# where SYM is the name of the constructor, ARGS is a
+# whitespace-separated list of argument types, TYPE is the type of the
+# resulting ATerm (which should be `ATerm' or a type synonym for
+# `ATerm'), and the optional FUN is used to construct the names of the
+# build and match functions (it defaults to SYM; overriding it is
+# useful if there are overloaded constructors, e.g., with different
+# arities).  Note that SYM may be empty.
+#
+# A line of the form
+#
+#   VAR = EXPR
+#
+# causes a ATerm variable to be generated that is initialised to the
+# value EXPR.
+#
+# Finally, a line of the form
+#
+#   init NAME
+#
+# causes the initialisation function to be called `NAME'.  This
+# function must be called before any of the build/match functions or
+# the generated variables are used.
+
+die if scalar @ARGV != 2;
+
+my $syms = "";
+my $init = "";
+my $initFun = "init";
+
+open HEADER, ">$ARGV[0]";
+open IMPL, ">$ARGV[1]";
+
+while (<STDIN>) {
+    next if (/^\s*$/);
+    
+    if (/^\s*(\w*)\s*\|([^\|]*)\|\s*(\w+)\s*\|\s*(\w+)?/) {
+        my $const = $1;
+        my @types = split ' ', $2;
+        my $result = $3;
+        my $funname = $4;
+        $funname = $const unless defined $funname;
+
+        my $formals = "";
+        my $formals2 = "";
+        my $args = "";
+        my $unpack = "";
+        my $n = 1;
+        foreach my $type (@types) {
+            my $realType = $type;
+            $args .= ", ";
+            if ($type eq "string") {
+#                $args .= "(ATerm) ATmakeAppl0(ATmakeAFun((char *) e$n, 0, ATtrue))";
+#                $type = "const char *";
+                $type = "ATerm";
+                $args .= "e$n";
+                # !!! in the matcher, we should check that the
+                # argument is a string (i.e., a nullary application).
+            } elsif ($type eq "int") {
+                $args .= "(ATerm) ATmakeInt(e$n)";
+            } elsif ($type eq "ATermList" || $type eq "ATermBlob") {
+                $args .= "(ATerm) e$n";
+            } else {
+                $args .= "e$n";
+            }
+            $formals .= ", " if $formals ne "";
+            $formals .= "$type e$n";
+            $formals2 .= ", ";
+            $formals2 .= "$type & e$n";
+            my $m = $n - 1;
+            # !!! more checks here
+            if ($type eq "int") {
+                $unpack .= "    e$n = ATgetInt((ATermInt) ATgetArgument(e, $m));\n";
+            } elsif ($type eq "ATermList") {
+                $unpack .= "    e$n = (ATermList) ATgetArgument(e, $m);\n";
+            } elsif ($type eq "ATermBlob") {
+                $unpack .= "    e$n = (ATermBlob) ATgetArgument(e, $m);\n";
+            } elsif ($realType eq "string") {
+                $unpack .= "    e$n = ATgetArgument(e, $m);\n";
+                $unpack .= "    if (ATgetType(e$n) != AT_APPL) return false;\n";
+            } else {
+                $unpack .= "    e$n = ATgetArgument(e, $m);\n";
+            }
+            $n++;
+        }
+
+        my $arity = scalar @types;
+
+        print HEADER "extern AFun sym$funname;\n\n";
+        
+        print IMPL "AFun sym$funname = 0;\n";
+        
+        print HEADER "static inline $result make$funname($formals) {\n";
+        if ($arity <= 6) {
+            print HEADER "    return (ATerm) ATmakeAppl$arity(sym$funname$args);\n";
+        } else {
+            $args =~ s/^,//;
+            print HEADER "    ATerm array[$arity] = {$args};\n";
+            print HEADER "    return (ATerm) ATmakeApplArray(sym$funname, array);\n";
+        }
+        print HEADER "}\n\n";
+
+        print HEADER "#ifdef __cplusplus\n";
+        print HEADER "static inline bool match$funname(ATerm e$formals2) {\n";
+        print HEADER "    if (ATgetType(e) != AT_APPL || (AFun) ATgetAFun(e) != sym$funname) return false;\n";
+        print HEADER "$unpack";
+        print HEADER "    return true;\n";
+        print HEADER "}\n";
+        print HEADER "#endif\n\n\n";
+
+        $init .= "    sym$funname = ATmakeAFun(\"$const\", $arity, ATfalse);\n";
+        $init .= "    ATprotectAFun(sym$funname);\n";
+    }
+
+    elsif (/^\s*(\w+)\s*=\s*(.*)$/) {
+        my $name = $1;
+        my $value = $2;
+        print HEADER "extern ATerm $name;\n";
+        print IMPL "ATerm $name = 0;\n";
+        $init .= "    $name = $value;\n";
+    }
+
+    elsif (/^\s*init\s+(\w+)\s*$/) {
+        $initFun = $1;
+    }
+
+    else {
+        die "bad line: `$_'";
+    }
+}
+
+print HEADER "void $initFun();\n\n";
+
+print HEADER "static inline const char * aterm2String(ATerm t) {\n";
+print HEADER "    return (const char *) ATgetName(ATgetAFun(t));\n";
+print HEADER "}\n\n";
+
+print IMPL "\n";
+print IMPL "void $initFun() {\n";
+print IMPL "$init";
+print IMPL "}\n";
+
+close HEADER;
+close IMPL;

src/bin2c/Makefile.am

@@ -1,6 +1,3 @@
 noinst_PROGRAMS = bin2c
 
 bin2c_SOURCES = bin2c.c
-
-bin2c$(EXEEXT): bin2c.c
-	$(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) -o bin2c bin2c.c

src/boost/Makefile.am

@@ -1,8 +1,6 @@
 SUBDIRS = format
 
-nobase_pkginclude_HEADERS = assert.hpp checked_delete.hpp format.hpp \
+EXTRA_DIST = assert.hpp checked_delete.hpp format.hpp \
  shared_ptr.hpp weak_ptr.hpp throw_exception.hpp \
  enable_shared_from_this.hpp \
  detail/shared_count.hpp detail/workaround.hpp
-
-pkgincludedir = ${includedir}/nix/boost

src/boost/format/Makefile.am

@@ -1,12 +1,8 @@
-pkglib_LTLIBRARIES = libformat.la
+noinst_LIBRARIES = libformat.a
 
-libformat_la_SOURCES = format_implementation.cc free_funcs.cc \
- parsing.cc 
-
-pkginclude_HEADERS = exceptions.hpp feed_args.hpp format_class.hpp \
+libformat_a_SOURCES = format_implementation.cc free_funcs.cc \
+ parsing.cc exceptions.hpp feed_args.hpp format_class.hpp \
  format_fwd.hpp group.hpp internals.hpp internals_fwd.hpp \
  macros_default.hpp
 
-pkgincludedir = ${includedir}/nix/boost/format
-
-AM_CXXFLAGS = -Wall -I$(srcdir)/../..
+AM_CXXFLAGS = -Wall -I../..

src/bsdiff-4.2/LICENSE

@@ -0,0 +1,121 @@
+BSD Protection License
+February 2002
+
+Preamble
+--------
+
+The Berkeley Software Distribution ("BSD") license has proven very effective
+over the years at allowing for a wide spread of work throughout both
+commercial and non-commercial products.  For programmers whose primary
+intention is to improve the general quality of available software, it is
+arguable that there is no better license than the BSD license, as it
+permits improvements to be used wherever they will help, without idealogical
+or metallic constraint.
+
+This is of particular value to those who produce reference implementations
+of proposed standards: The case of TCP/IP clearly illustrates that freely
+and universally available implementations leads the rapid acceptance of
+standards -- often even being used instead of a de jure standard (eg, OSI
+network models).
+
+With the rapid proliferation of software licensed under the GNU General
+Public License, however, the continued success of this role is called into
+question.  Given that the inclusion of a few lines of "GPL-tainted" work
+into a larger body of work will result in restricted distribution -- and
+given that further work will likely build upon the "tainted" portions,
+making them difficult to remove at a future date -- there are inevitable
+circumstances where authors would, in order to protect their goal of
+providing for the widespread usage of their work, wish to guard against
+such "GPL-taint".
+
+In addition, one can imagine that companies which operate by producing and
+selling (possibly closed-source) code would wish to protect themselves
+against the rise of a GPL-licensed competitor.  While under existing
+licenses this would mean not releasing their code under any form of open
+license, if a license existed under which they could incorporate any
+improvements back into their own (commercial) products then they might be
+far more willing to provide for non-closed distribution.
+
+For the above reasons, we put forth this "BSD Protection License": A
+license designed to retain the freedom granted by the BSD license to use
+licensed works in a wide variety of settings, both non-commercial and
+commercial, while protecting the work from having future contributors
+restrict that freedom.
+
+The precise terms and conditions for copying, distribution, and
+modification follow.
+
+BSD PROTECTION LICENSE
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION, AND MODIFICATION
+----------------------------------------------------------------
+
+0. Definitions.
+   a) "Program", below, refers to any program or work distributed under
+      the terms of this license.
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+      or any derivative work under copyright law.
+   c) "Modification", below, refers to the act of creating derivative works.
+   d) "You", below, refers to each licensee.
+
+1. Scope.
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+   Program.  Other activities are outside the scope of this license; The
+   act of running the Program is not restricted, and the output from the
+   Program is covered only if its contents constitute a work based on the
+   Program.
+
+2. Verbatim copies.
+   You may copy and distribute verbatim copies of the Program as you
+   receive it, in any medium, provided that you conspicuously and
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+
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+
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