Move /src to /subprojects

This will facilitate breaking up Nix into multiple packages for each
component with Meson.

.clang-format

@@ -8,7 +8,7 @@ BraceWrapping:
   AfterUnion: true
   SplitEmptyRecord: false
 PointerAlignment: Middle
-FixNamespaceComments: true
+FixNamespaceComments: false
 SortIncludes: Never
 #IndentPPDirectives: BeforeHash
 SpaceAfterCStyleCast: true
@@ -32,4 +32,3 @@ IndentPPDirectives: AfterHash
 PPIndentWidth: 2
 BinPackArguments: false
 BreakBeforeTernaryOperators: true
-SeparateDefinitionBlocks: Always

.coderabbit.yaml

@@ -1,18 +0,0 @@
-# yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json
-# Disable CodeRabbit auto-review to prevent verbose comments on PRs.
-# When enabled: false, CodeRabbit won't attempt reviews and won't post
-# "Review skipped" or other automated comments.
-reviews:
-  auto_review:
-    enabled: false
-  review_status: false
-  high_level_summary: false
-  poem: false
-  sequence_diagrams: false
-  changed_files_summary: false
-  tools:
-    github-checks:
-      enabled: false
-chat:
-  art: false
-  auto_reply: false

.git-blame-ignore-revs

@@ -1,6 +0,0 @@
-# bulk initial re-formatting with clang-format
-e4f62e46088919428a68bd8014201dc8e379fed7 # !autorebase ./maintainers/format.sh --until-stable
-# meson re-formatting
-385e2c3542c707d95e3784f7f6d623f67e77ab61 # !autorebase ./maintainers/format.sh --until-stable
-# nixfmt 1.0.0
-1d943f581908f35075a84a3d89c2eba3ff35067f # !autorebase ./maintainers/format.sh --until-stable

.github/CODEOWNERS

@@ -11,7 +11,16 @@
 .github/CODEOWNERS @edolstra
 
 # Documentation of built-in functions
-src/libexpr/primops.cc @roberth
+subprojects/libexpr/primops.cc @roberth @fricklerhandwerk
+
+# Documentation of settings
+subprojects/libexpr/eval-settings.hh @fricklerhandwerk
+subprojects/libstore/globals.hh @fricklerhandwerk
+
+# Documentation
+doc/manual @fricklerhandwerk
+maintainers/*.md @fricklerhandwerk
+subprojects/**/*.md @fricklerhandwerk
 
 # Libstore layer
-/src/libstore @ericson2314
+/subprojects/libstore @ericson2314

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,54 +1,36 @@
 ---
 name: Bug report
-about: Report unexpected or incorrect behaviour
+about: Create a report to help us improve
 title: ''
 labels: bug
 assignees: ''
 
 ---
 
-## Describe the bug
+**Describe the bug**
 
-<!--
-  A clear and concise description of what the bug is.
+A clear and concise description of what the bug is.
 
-  If you have a problem with a specific package or NixOS,
-  you probably want to file an issue at https://github.com/NixOS/nixpkgs/issues.
--->
+If you have a problem with a specific package or NixOS,
+you probably want to file an issue at https://github.com/NixOS/nixpkgs/issues. 
 
-## Steps To Reproduce
+**Steps To Reproduce**
 
-<!--
-  Example:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
 
-  1. Clone this repository: ...
-  2. Run `nix-... ...`
-  3. Observe unexpected behaviour
--->
+**Expected behavior**
 
-## Expected behavior
+A clear and concise description of what you expected to happen.
 
-<!-- A clear and concise description of what you expected to happen. -->
+**`nix-env --version` output**
 
-## Metadata
+**Additional context**
 
-<!-- Please insert the output of running `nix-env --version` below this line -->
+Add any other context about the problem here.
 
-## Additional context
-
-<!-- Add any other context about the problem here. -->
-
-## Checklist
-
-<!-- make sure this issue is not redundant or obsolete -->
-
-- [ ] checked [latest Nix manual] \([source])
-- [ ] checked [open bug issues and pull requests] for possible duplicates
-
-[latest Nix manual]: https://nix.dev/manual/nix/development/
-[source]: https://github.com/NixOS/nix/tree/master/doc/manual/source
-[open bug issues and pull requests]: https://github.com/NixOS/nix/labels/bug
-
----
+**Priorities**
 
 Add :+1: to [issues you find important](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc).

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,39 +1,24 @@
 ---
 name: Feature request
-about: Suggest a new feature
+about: Suggest an idea for this project
 title: ''
 labels: feature
 assignees: ''
 
 ---
 
-## Is your feature request related to a problem?
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
 
-<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
 
-## Proposed solution
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
 
-<!-- A clear and concise description of what you want to happen. -->
+**Additional context**
+Add any other context or screenshots about the feature request here.
 
-## Alternative solutions
-
-<!-- A clear and concise description of any alternative solutions or features you've considered. -->
-
-## Additional context
-
-<!-- Add any other context or screenshots about the feature request here. -->
-
-## Checklist
-
-<!-- make sure this issue is not redundant or obsolete -->
-
-- [ ] checked [latest Nix manual] \([source])
-- [ ] checked [open feature issues and pull requests] for possible duplicates
-
-[latest Nix manual]: https://nix.dev/manual/nix/development/
-[source]: https://github.com/NixOS/nix/tree/master/doc/manual/source
-[open feature issues and pull requests]: https://github.com/NixOS/nix/labels/feature
-
----
+**Priorities**
 
 Add :+1: to [issues you find important](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc).

.github/ISSUE_TEMPLATE/installer.md

@@ -23,25 +23,14 @@ assignees: ''
 
 <details><summary>Output</summary>
 
-<!-- paste console output inside the below code block -->
-
 ```log
 
+<!-- paste console output here and remove this comment -->
+
 ```
 
 </details>
 
-## Checklist
-
-<!-- make sure this issue is not redundant or obsolete -->
-
-- [ ] checked [latest Nix manual] \([source])
-- [ ] checked [open installer issues and pull requests] for possible duplicates
-
-[latest Nix manual]: https://nix.dev/manual/nix/development/
-[source]: https://github.com/NixOS/nix/tree/master/doc/manual/source
-[open installer issues and pull requests]: https://github.com/NixOS/nix/labels/installer
-
----
+## Priorities
 
 Add :+1: to [issues you find important](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc).

.github/ISSUE_TEMPLATE/missing_documentation.md

@@ -22,10 +22,10 @@ assignees: ''
 - [ ] checked [latest Nix manual] \([source])
 - [ ] checked [open documentation issues and pull requests] for possible duplicates
 
-[latest Nix manual]: https://nix.dev/manual/nix/development/
-[source]: https://github.com/NixOS/nix/tree/master/doc/manual/source
+[latest Nix manual]: https://nixos.org/manual/nix/unstable/
+[source]: https://github.com/NixOS/nix/tree/master/doc/manual/src
 [open documentation issues and pull requests]: https://github.com/NixOS/nix/labels/documentation
 
----
+## Priorities
 
 Add :+1: to [issues you find important](https://github.com/NixOS/nix/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc).

.github/PULL_REQUEST_TEMPLATE.md

@@ -15,18 +15,12 @@ so you understand the process and the expectations.
 - volunteering contributions effectively
 - how to get help and our review process.
 
-PR stuck in review? We have two Nix team meetings per week online that are open for everyone in a jitsi conference:
-
-- https://calendar.google.com/calendar/u/0/embed?src=b9o52fobqjak8oq8lfkhg3t0qg@group.calendar.google.com
-
 -->
 
-## Motivation
-
+# Motivation
 <!-- Briefly explain what the change is about and why it is desirable. -->
 
-## Context
-
+# Context
 <!-- Provide context. Reference open issues if available. -->
 
 <!-- Non-trivial change: Briefly outline the implementation strategy. -->
@@ -35,7 +29,7 @@ PR stuck in review? We have two Nix team meetings per week online that are open
 
 <!-- Large change: Provide instructions to reviewers how to read the diff. -->
 
----
+# Priorities and Process
 
 Add :+1: to [pull requests you find important](https://github.com/NixOS/nix/pulls?q=is%3Aopen+sort%3Areactions-%2B1-desc).
 

.github/STALE-BOT.md

@@ -3,7 +3,7 @@
 - Thanks for your contribution!
 - To remove the stale label, just leave a new comment.
 - _How to find the right people to ping?_ → [`git blame`](https://git-scm.com/docs/git-blame) to the rescue! (or GitHub's history and blame buttons.)
-- You can always ask for help on [our Discourse Forum](https://discourse.nixos.org/) or on [Matrix - #users:nixos.org](https://matrix.to/#/#users:nixos.org).
+- You can always ask for help on [our Discourse Forum](https://discourse.nixos.org/) or on [Matrix - #nix:nixos.org](https://matrix.to/#/#nix:nixos.org).
 
 ## Suggestions for PRs
 

.github/actions/install-nix-action/action.yaml

@@ -1,124 +0,0 @@
-name: "Install Nix"
-description: "Helper action for installing Nix with support for dogfooding from master"
-inputs:
-  dogfood:
-    description: "Whether to use Nix installed from the latest artifact from master branch"
-    required: true # Be explicit about the fact that we are using unreleased artifacts
-  experimental-installer:
-    description: "Whether to use the experimental installer to install Nix"
-    default: false
-  experimental-installer-version:
-    description: "Version of the experimental installer to use. If `latest`, the newest artifact from the default branch is used."
-    # TODO: This should probably be pinned to a release after https://github.com/NixOS/experimental-nix-installer/pull/49 lands in one
-    default: "latest"
-  extra_nix_config:
-    description: "Gets appended to `/etc/nix/nix.conf` if passed."
-  install_url:
-    description: "URL of the Nix installer"
-    required: false
-    default: "https://releases.nixos.org/nix/nix-2.32.1/install"
-  tarball_url:
-    description: "URL of the Nix tarball to use with the experimental installer"
-    required: false
-  github_token:
-    description: "Github token"
-    required: true
-  use_cache:
-    description: "Whether to setup github actions cache (not implemented currently)"
-    default: false
-    required: false
-runs:
-  using: "composite"
-  steps:
-    - name: "Download nix install artifact from master"
-      shell: bash
-      id: download-nix-installer
-      if: inputs.dogfood == 'true'
-      run: |
-        RUN_ID=$(gh run list --repo "$DOGFOOD_REPO" --workflow ci.yml --branch master --status success --json databaseId --jq ".[0].databaseId")
-
-        if [ "$RUNNER_OS" == "Linux" ]; then
-          INSTALLER_ARTIFACT="installer-linux"
-        elif [ "$RUNNER_OS" == "macOS" ]; then
-          INSTALLER_ARTIFACT="installer-darwin"
-        else
-          echo "::error ::Unsupported RUNNER_OS: $RUNNER_OS"
-          exit 1
-        fi
-
-        INSTALLER_DOWNLOAD_DIR="$GITHUB_WORKSPACE/$INSTALLER_ARTIFACT"
-        mkdir -p "$INSTALLER_DOWNLOAD_DIR"
-
-        gh run download "$RUN_ID" --repo "$DOGFOOD_REPO" -n "$INSTALLER_ARTIFACT" -D "$INSTALLER_DOWNLOAD_DIR"
-        echo "installer-path=file://$INSTALLER_DOWNLOAD_DIR" >> "$GITHUB_OUTPUT"
-        TARBALL_PATH="$(find "$INSTALLER_DOWNLOAD_DIR" -name 'nix*.tar.xz' -print | head -n 1)"
-        echo "tarball-path=file://$TARBALL_PATH" >> "$GITHUB_OUTPUT"
-
-        echo "::notice ::Dogfooding Nix installer from master (https://github.com/$DOGFOOD_REPO/actions/runs/$RUN_ID)"
-      env:
-        GH_TOKEN: ${{ inputs.github_token }}
-        DOGFOOD_REPO: "NixOS/nix"
-    - name: "Gather system info for experimental installer"
-      shell: bash
-      if: ${{ inputs.experimental-installer == 'true' }}
-      run: |
-        echo "::notice Using experimental installer from $EXPERIMENTAL_INSTALLER_REPO (https://github.com/$EXPERIMENTAL_INSTALLER_REPO)"
-
-        if [ "$RUNNER_OS" == "Linux" ]; then
-          EXPERIMENTAL_INSTALLER_SYSTEM="linux"
-          echo "EXPERIMENTAL_INSTALLER_SYSTEM=$EXPERIMENTAL_INSTALLER_SYSTEM" >> "$GITHUB_ENV"
-        elif [ "$RUNNER_OS" == "macOS" ]; then
-          EXPERIMENTAL_INSTALLER_SYSTEM="darwin"
-          echo "EXPERIMENTAL_INSTALLER_SYSTEM=$EXPERIMENTAL_INSTALLER_SYSTEM" >> "$GITHUB_ENV"
-        else
-          echo "::error ::Unsupported RUNNER_OS: $RUNNER_OS"
-          exit 1
-        fi
-
-        if [ "$RUNNER_ARCH" == "X64" ]; then
-          EXPERIMENTAL_INSTALLER_ARCH=x86_64
-          echo "EXPERIMENTAL_INSTALLER_ARCH=$EXPERIMENTAL_INSTALLER_ARCH" >> "$GITHUB_ENV"
-        elif [ "$RUNNER_ARCH" == "ARM64" ]; then
-          EXPERIMENTAL_INSTALLER_ARCH=aarch64
-          echo "EXPERIMENTAL_INSTALLER_ARCH=$EXPERIMENTAL_INSTALLER_ARCH" >> "$GITHUB_ENV"
-        else
-          echo "::error ::Unsupported RUNNER_ARCH: $RUNNER_ARCH"
-          exit 1
-        fi
-
-        echo "EXPERIMENTAL_INSTALLER_ARTIFACT=nix-installer-$EXPERIMENTAL_INSTALLER_ARCH-$EXPERIMENTAL_INSTALLER_SYSTEM" >> "$GITHUB_ENV"
-      env:
-        EXPERIMENTAL_INSTALLER_REPO: "NixOS/experimental-nix-installer"
-    - name: "Download latest experimental installer"
-      shell: bash
-      id: download-latest-experimental-installer
-      if: ${{ inputs.experimental-installer == 'true' && inputs.experimental-installer-version == 'latest' }}
-      run: |
-        RUN_ID=$(gh run list --repo "$EXPERIMENTAL_INSTALLER_REPO" --workflow ci.yml --branch main --status success --json databaseId --jq ".[0].databaseId")
-
-        EXPERIMENTAL_INSTALLER_DOWNLOAD_DIR="$GITHUB_WORKSPACE/$EXPERIMENTAL_INSTALLER_ARTIFACT"
-        mkdir -p "$EXPERIMENTAL_INSTALLER_DOWNLOAD_DIR"
-
-        gh run download "$RUN_ID" --repo "$EXPERIMENTAL_INSTALLER_REPO" -n "$EXPERIMENTAL_INSTALLER_ARTIFACT" -D "$EXPERIMENTAL_INSTALLER_DOWNLOAD_DIR"
-        # Executable permissions are lost in artifacts
-        find $EXPERIMENTAL_INSTALLER_DOWNLOAD_DIR -type f -exec chmod +x {} +
-        echo "installer-path=$EXPERIMENTAL_INSTALLER_DOWNLOAD_DIR" >> "$GITHUB_OUTPUT"
-      env:
-        GH_TOKEN: ${{ inputs.github_token }}
-        EXPERIMENTAL_INSTALLER_REPO: "NixOS/experimental-nix-installer"
-    - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
-      if: ${{ inputs.experimental-installer != 'true' }}
-      with:
-        # Ternary operator in GHA: https://www.github.com/actions/runner/issues/409#issuecomment-752775072
-        install_url: ${{ inputs.dogfood == 'true' && format('{0}/install', steps.download-nix-installer.outputs.installer-path) || inputs.install_url }}
-        install_options: ${{ inputs.dogfood == 'true' && format('--tarball-url-prefix {0}', steps.download-nix-installer.outputs.installer-path) || '' }}
-        extra_nix_config: ${{ inputs.extra_nix_config }}
-    - uses: DeterminateSystems/nix-installer-action@786fff0690178f1234e4e1fe9b536e94f5433196 # v20
-      if: ${{ inputs.experimental-installer == 'true' }}
-      with:
-        diagnostic-endpoint: ""
-        # TODO: It'd be nice to use `artifacts.nixos.org` for both of these, maybe through an `/experimental-installer/latest` endpoint? or `/commit/<hash>`?
-        local-root: ${{ inputs.experimental-installer-version == 'latest' && steps.download-latest-experimental-installer.outputs.installer-path || '' }}
-        source-url: ${{ inputs.experimental-installer-version != 'latest' && 'https://artifacts.nixos.org/experimental-installer/tag/${{ inputs.experimental-installer-version }}/${{ env.EXPERIMENTAL_INSTALLER_ARTIFACT }}' || '' }}
-        nix-package-url: ${{ inputs.dogfood == 'true' && steps.download-nix-installer.outputs.tarball-path || (inputs.tarball_url || '') }}
-        extra-conf: ${{ inputs.extra_nix_config }}

.github/labeler.yml

@@ -1,7 +1,7 @@
 "c api":
   - changed-files:
-    - any-glob-to-any-file: "src/lib*-c/**/*"
-    - any-glob-to-any-file: "src/*test*/**/nix_api_*"
+    - any-glob-to-any-file: "subprojects/lib*-c/**/*"
+    - any-glob-to-any-file: "test/unit/**/nix_api_*"
     - any-glob-to-any-file: "doc/external-api/**/*"
 
 "contributor-experience":
@@ -9,35 +9,35 @@
     - any-glob-to-any-file: "CONTRIBUTING.md"
     - any-glob-to-any-file: ".github/ISSUE_TEMPLATE/*"
     - any-glob-to-any-file: ".github/PULL_REQUEST_TEMPLATE.md"
-    - any-glob-to-any-file: "doc/manual/source/contributing/**"
+    - any-glob-to-any-file: "doc/manual/src/contributing/**"
 
 "documentation":
   - changed-files:
     - any-glob-to-any-file: "doc/manual/**/*"
-    - any-glob-to-any-file: "src/nix/**/*.md"
+    - any-glob-to-any-file: "subprojects/nix/**/*.md"
 
 "store":
   - changed-files:
-    - any-glob-to-any-file: "src/libstore/store-api.*"
-    - any-glob-to-any-file: "src/libstore/*-store.*"
+    - any-glob-to-any-file: "subprojects/libstore/store-api.*"
+    - any-glob-to-any-file: "subprojects/libstore/*-store.*"
 
 "fetching":
   - changed-files:
-    - any-glob-to-any-file: "src/libfetchers/**/*"
+    - any-glob-to-any-file: "subprojects/libfetchers/**/*"
 
 "repl":
   - changed-files:
-    - any-glob-to-any-file: "src/libcmd/repl.*"
-    - any-glob-to-any-file: "src/nix/repl.*"
+    - any-glob-to-any-file: "subprojects/libcmd/repl.*"
+    - any-glob-to-any-file: "subprojects/nix/repl.*"
 
 "new-cli":
   - changed-files:
-    - any-glob-to-any-file: "src/nix/**/*"
+    - any-glob-to-any-file: "subprojects/nix/**/*"
 
 "with-tests":
   - changed-files:
     # Unit tests
-    - any-glob-to-any-file: "src/*/tests/**/*"
+    - any-glob-to-any-file: "subprojects/*/tests/**/*"
     # Functional and integration tests
     - any-glob-to-any-file: "tests/functional/**/*"
 

.github/workflows/backport.yml

@@ -1,37 +0,0 @@
-name: Backport
-on:
-  pull_request_target:
-    types: [closed, labeled]
-permissions:
-  contents: read
-jobs:
-  backport:
-    name: Backport Pull Request
-    permissions:
-      # for korthout/backport-action
-      contents: write
-      pull-requests: write
-    if: github.repository_owner == 'NixOS' && github.event.pull_request.merged == true && (github.event_name != 'labeled' || startsWith('backport', github.event.label.name))
-    runs-on: ubuntu-24.04-arm
-    steps:
-      - name: Generate GitHub App token
-        id: generate-token
-        uses: actions/create-github-app-token@v2
-        with:
-          app-id: ${{ vars.CI_APP_ID }}
-          private-key: ${{ secrets.CI_APP_PRIVATE_KEY }}
-      - uses: actions/checkout@v6
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          # required to find all branches
-          fetch-depth: 0
-      - name: Create backport PRs
-        uses: korthout/backport-action@c656f5d5851037b2b38fb5db2691a03fa229e3b2 # v4.0.1
-        id: backport
-        with:
-          # Config README: https://github.com/korthout/backport-action#backport-action
-          github_token: ${{ steps.generate-token.outputs.token }}
-          github_workspace: ${{ github.workspace }}
-          auto_merge_enabled: true
-          pull_description: |-
-            Automatic backport to `${target_branch}`, triggered by a label in #${pull_number}.

.github/workflows/ci.yml

@@ -2,194 +2,124 @@ name: "CI"
 
 on:
   pull_request:
-  merge_group:
   push:
-    branches:
-      - master
-  workflow_dispatch:
-    inputs:
-      dogfood:
-        description: 'Use dogfood Nix build'
-        required: false
-        default: true
-        type: boolean
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
 
 permissions: read-all
 
 jobs:
-  eval:
-    runs-on: ubuntu-24.04
-    steps:
-    - uses: actions/checkout@v6
-      with:
-        fetch-depth: 0
-    - uses: ./.github/actions/install-nix-action
-      with:
-        dogfood: ${{ github.event_name == 'workflow_dispatch' && inputs.dogfood || github.event_name != 'workflow_dispatch' }}
-        extra_nix_config:
-          experimental-features = nix-command flakes
-        github_token: ${{ secrets.GITHUB_TOKEN }}
-        use_cache: false
-    - run: nix flake show --all-systems --json
-
-  pre-commit-checks:
-    name: pre-commit checks
-    runs-on: ubuntu-24.04
-    steps:
-      - uses: actions/checkout@v6
-      - uses: ./.github/actions/install-nix-action
-        with:
-          dogfood: ${{ github.event_name == 'workflow_dispatch' && inputs.dogfood || github.event_name != 'workflow_dispatch' }}
-          extra_nix_config: experimental-features = nix-command flakes
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-      - run: ./ci/gha/tests/pre-commit-checks
-
-  basic-checks:
-    name: aggregate basic checks
-    if: ${{ always() }}
-    runs-on: ubuntu-24.04
-    needs: [pre-commit-checks, eval]
-    steps:
-      - name: Exit with any errors
-        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
-        run: |
-          exit 1
 
   tests:
-    needs: basic-checks
+    needs: [check_secrets]
     strategy:
       fail-fast: false
       matrix:
-        include:
-          - scenario: on ubuntu
-            runs-on: ubuntu-24.04
-            os: linux
-            instrumented: false
-            primary: true
-            stdenv: stdenv
-          - scenario: on macos
-            runs-on: macos-14
-            os: darwin
-            instrumented: false
-            primary: true
-            stdenv: stdenv
-          - scenario: on ubuntu (with sanitizers / coverage)
-            runs-on: ubuntu-24.04
-            os: linux
-            instrumented: true
-            primary: false
-            stdenv: clangStdenv
-    name: tests ${{ matrix.scenario }}
-    runs-on: ${{ matrix.runs-on }}
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
     timeout-minutes: 60
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
-    - uses: ./.github/actions/install-nix-action
+    - uses: cachix/install-nix-action@v30
       with:
-        github_token: ${{ secrets.GITHUB_TOKEN }}
-        dogfood: ${{ github.event_name == 'workflow_dispatch' && inputs.dogfood || github.event_name != 'workflow_dispatch' }}
         # The sandbox would otherwise be disabled by default on Darwin
         extra_nix_config: "sandbox = true"
-    # Since ubuntu 22.30, unprivileged usernamespaces are no longer allowed to map to the root user:
-    # https://ubuntu.com/blog/ubuntu-23-10-restricted-unprivileged-user-namespaces
-    - run: sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0
-      if: matrix.os == 'linux'
-    - name: Run component tests
-      run: |
-        nix build --file ci/gha/tests/wrapper.nix componentTests -L \
-          --arg withInstrumentation ${{ matrix.instrumented }} \
-          --argstr stdenv "${{ matrix.stdenv }}"
-    - name: Run VM tests
-      run: |
-        nix build --file ci/gha/tests/wrapper.nix vmTests -L \
-          --arg withInstrumentation ${{ matrix.instrumented }} \
-          --argstr stdenv "${{ matrix.stdenv }}"
-      if: ${{ matrix.os == 'linux' }}
-    - name: Run flake checks and prepare the installer tarball
-      run: |
-        ci/gha/tests/build-checks
-        ci/gha/tests/prepare-installer-for-github-actions
-      if: ${{ matrix.primary }}
-    - name: Collect code coverage
-      run: |
-        nix build --file ci/gha/tests/wrapper.nix codeCoverage.coverageReports -L \
-          --arg withInstrumentation ${{ matrix.instrumented }} \
-          --argstr stdenv "${{ matrix.stdenv }}" \
-          --out-link coverage-reports
-        cat coverage-reports/index.txt >> $GITHUB_STEP_SUMMARY
-      if: ${{ matrix.instrumented }}
-    - name: Upload coverage reports
-      uses: actions/upload-artifact@v6
+    - run: echo CACHIX_NAME="$(echo $GITHUB_REPOSITORY-install-tests | tr "[A-Z]/" "[a-z]-")" >> $GITHUB_ENV
+    - uses: cachix/cachix-action@v15
+      if: needs.check_secrets.outputs.cachix == 'true'
       with:
-        name: coverage-reports
-        path: coverage-reports/
-      if: ${{ matrix.instrumented }}
-    - name: Upload installer tarball
-      uses: actions/upload-artifact@v6
+        name: '${{ env.CACHIX_NAME }}'
+        signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
+        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+    - if: matrix.os == 'ubuntu-latest'
+      run: |
+        free -h
+        swapon --show
+        swap=$(swapon --show --noheadings | head -n 1 | awk '{print $1}')
+        echo "Found swap: $swap"
+        sudo swapoff $swap
+        # resize it (fallocate)
+        sudo fallocate -l 10G $swap
+        sudo mkswap $swap
+        sudo swapon $swap
+        free -h
+        (
+          while sleep 60; do
+            free -h
+          done
+        ) &
+    - run: nix --experimental-features 'nix-command flakes' flake check -L
+    - run: nix --experimental-features 'nix-command flakes' flake show --all-systems --json
+
+  # Steps to test CI automation in your own fork.
+  # Cachix:
+  # 1. Sign-up for https://www.cachix.org/
+  # 2. Create a cache for $githubuser-nix-install-tests
+  # 3. Create a cachix auth token and save it in https://github.com/$githubuser/nix/settings/secrets/actions in "Repository secrets" as CACHIX_AUTH_TOKEN
+  # Dockerhub:
+  # 1. Sign-up for https://hub.docker.com/
+  # 2. Store your dockerhub username as DOCKERHUB_USERNAME in "Repository secrets" of your fork repository settings (https://github.com/$githubuser/nix/settings/secrets/actions)
+  # 3. Create an access token in https://hub.docker.com/settings/security and store it as DOCKERHUB_TOKEN in "Repository secrets" of your fork
+  check_secrets:
+    permissions:
+      contents: none
+    name: Check Cachix and Docker secrets present for installer tests
+    runs-on: ubuntu-latest
+    outputs:
+      cachix: ${{ steps.secret.outputs.cachix }}
+      docker: ${{ steps.secret.outputs.docker }}
+    steps:
+      - name: Check for secrets
+        id: secret
+        env:
+          _CACHIX_SECRETS: ${{ secrets.CACHIX_SIGNING_KEY }}${{ secrets.CACHIX_AUTH_TOKEN }}
+          _DOCKER_SECRETS: ${{ secrets.DOCKERHUB_USERNAME }}${{ secrets.DOCKERHUB_TOKEN }}
+        run: |
+          echo "::set-output name=cachix::${{ env._CACHIX_SECRETS != '' }}"
+          echo "::set-output name=docker::${{ env._DOCKER_SECRETS != '' }}"
+
+  installer:
+    needs: [tests, check_secrets]
+    if: github.event_name == 'push' && needs.check_secrets.outputs.cachix == 'true'
+    runs-on: ubuntu-latest
+    outputs:
+      installerURL: ${{ steps.prepare-installer.outputs.installerURL }}
+    steps:
+    - uses: actions/checkout@v4
       with:
-        name: installer-${{matrix.os}}
-        path: out/*
-      if: ${{ matrix.primary }}
+        fetch-depth: 0
+    - run: echo CACHIX_NAME="$(echo $GITHUB_REPOSITORY-install-tests | tr "[A-Z]/" "[a-z]-")" >> $GITHUB_ENV
+    - uses: cachix/install-nix-action@v30
+      with:
+        install_url: https://releases.nixos.org/nix/nix-2.20.3/install
+    - uses: cachix/cachix-action@v15
+      with:
+        name: '${{ env.CACHIX_NAME }}'
+        signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
+        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+        cachixArgs: '-v'
+    - id: prepare-installer
+      run: scripts/prepare-installer-for-github-actions
 
   installer_test:
-    needs: [tests]
+    needs: [installer, check_secrets]
+    if: github.event_name == 'push' && needs.check_secrets.outputs.cachix == 'true'
     strategy:
       fail-fast: false
       matrix:
-        include:
-          - scenario: on ubuntu
-            runs-on: ubuntu-24.04
-            os: linux
-            experimental-installer: false
-          - scenario: on macos
-            runs-on: macos-14
-            os: darwin
-            experimental-installer: false
-          - scenario: on ubuntu (experimental)
-            runs-on: ubuntu-24.04
-            os: linux
-            experimental-installer: true
-          - scenario: on macos (experimental)
-            runs-on: macos-14
-            os: darwin
-            experimental-installer: true
-    name: installer test ${{ matrix.scenario }}
-    runs-on: ${{ matrix.runs-on }}
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v6
-    - name: Download installer tarball
-      uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
+    - uses: actions/checkout@v4
+    - run: echo CACHIX_NAME="$(echo $GITHUB_REPOSITORY-install-tests | tr "[A-Z]/" "[a-z]-")" >> $GITHUB_ENV
+    - uses: cachix/install-nix-action@v30
       with:
-        name: installer-${{matrix.os}}
-        path: out
-    - name: Looking up the installer tarball URL
-      id: installer-tarball-url
-      run: |
-        echo "installer-url=file://$GITHUB_WORKSPACE/out" >> "$GITHUB_OUTPUT"
-        TARBALL_PATH="$(find "$GITHUB_WORKSPACE/out" -name 'nix*.tar.xz' -print | head -n 1)"
-        echo "tarball-path=file://$TARBALL_PATH" >> "$GITHUB_OUTPUT"
-    - uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15 # v31.9.0
-      if: ${{ !matrix.experimental-installer }}
-      with:
-        install_url: ${{ format('{0}/install', steps.installer-tarball-url.outputs.installer-url) }}
-        install_options: ${{ format('--tarball-url-prefix {0}', steps.installer-tarball-url.outputs.installer-url) }}
-    - uses: ./.github/actions/install-nix-action
-      if: ${{ matrix.experimental-installer }}
-      with:
-        dogfood: false
-        experimental-installer: true
-        tarball_url: ${{ steps.installer-tarball-url.outputs.tarball-path }}
-        github_token: ${{ secrets.GITHUB_TOKEN }}
+        install_url: '${{needs.installer.outputs.installerURL}}'
+        install_options: "--tarball-url-prefix https://${{ env.CACHIX_NAME }}.cachix.org/serve"
     - run: sudo apt install fish zsh
-      if: matrix.os == 'linux'
+      if: matrix.os == 'ubuntu-latest'
     - run: brew install fish
-      if: matrix.os == 'darwin'
+      if: matrix.os == 'macos-latest'
     - run: exec bash -c "nix-instantiate -E 'builtins.currentTime' --eval"
     - run: exec sh -c "nix-instantiate -E 'builtins.currentTime' --eval"
     - run: exec zsh -c "nix-instantiate -E 'builtins.currentTime' --eval"
@@ -197,56 +127,91 @@ jobs:
     - run: exec bash -c "nix-channel --add https://releases.nixos.org/nixos/unstable/nixos-23.05pre466020.60c1d71f2ba nixpkgs"
     - run: exec bash -c "nix-channel --update && nix-env -iA nixpkgs.hello && hello"
 
+  docker_push_image:
+    needs: [check_secrets, tests]
+    permissions:
+      contents: read
+      packages: write
+    if: >-
+      github.event_name == 'push' &&
+      github.ref_name == 'master' &&
+      needs.check_secrets.outputs.cachix == 'true' &&
+      needs.check_secrets.outputs.docker == 'true'
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - uses: cachix/install-nix-action@v30
+      with:
+        install_url: https://releases.nixos.org/nix/nix-2.20.3/install
+    - run: echo CACHIX_NAME="$(echo $GITHUB_REPOSITORY-install-tests | tr "[A-Z]/" "[a-z]-")" >> $GITHUB_ENV
+    - run: echo NIX_VERSION="$(nix --experimental-features 'nix-command flakes' eval .\#nix.version | tr -d \")" >> $GITHUB_ENV
+    - uses: cachix/cachix-action@v15
+      if: needs.check_secrets.outputs.cachix == 'true'
+      with:
+        name: '${{ env.CACHIX_NAME }}'
+        signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
+        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+    - run: nix --experimental-features 'nix-command flakes' build .#dockerImage -L
+    - run: docker load -i ./result/image.tar.gz
+    - run: docker tag nix:$NIX_VERSION ${{ secrets.DOCKERHUB_USERNAME }}/nix:$NIX_VERSION
+    - run: docker tag nix:$NIX_VERSION ${{ secrets.DOCKERHUB_USERNAME }}/nix:master
+    # We'll deploy the newly built image to both Docker Hub and Github Container Registry.
+    #
+    # Push to Docker Hub first
+    - name: Login to Docker Hub
+      uses: docker/login-action@v3
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+    - run: docker push ${{ secrets.DOCKERHUB_USERNAME }}/nix:$NIX_VERSION
+    - run: docker push ${{ secrets.DOCKERHUB_USERNAME }}/nix:master
+    # Push to GitHub Container Registry as well
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+    - name: Push image
+      run: |
+        IMAGE_ID=ghcr.io/${{ github.repository_owner }}/nix
+        # Change all uppercase to lowercase
+        IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
+
+        docker tag nix:$NIX_VERSION $IMAGE_ID:$NIX_VERSION
+        docker tag nix:$NIX_VERSION $IMAGE_ID:latest
+        docker push $IMAGE_ID:$NIX_VERSION
+        docker push $IMAGE_ID:latest
+        # deprecated 2024-02-24
+        docker tag nix:$NIX_VERSION $IMAGE_ID:master
+        docker push $IMAGE_ID:master
+
+  vm_tests:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - run: nix build -L .#hydraJobs.tests.githubFlakes .#hydraJobs.tests.tarballFlakes .#hydraJobs.tests.functional_user
+
   flake_regressions:
-    needs: tests
-    runs-on: ubuntu-24.04
+    needs: vm_tests
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout nix
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
       - name: Checkout flake-regressions
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
         with:
           repository: NixOS/flake-regressions
           path: flake-regressions
       - name: Checkout flake-regressions-data
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
         with:
           repository: NixOS/flake-regressions-data
           path: flake-regressions/tests
-      - name: Download installer tarball
-        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
-        with:
-          name: installer-linux
-          path: out
-      - name: Looking up the installer tarball URL
-        id: installer-tarball-url
-        run: |
-          echo "installer-url=file://$GITHUB_WORKSPACE/out" >> "$GITHUB_OUTPUT"
-      - uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15 # v31.9.0
-        with:
-          install_url: ${{ format('{0}/install', steps.installer-tarball-url.outputs.installer-url) }}
-          install_options: ${{ format('--tarball-url-prefix {0}', steps.installer-tarball-url.outputs.installer-url) }}
-      - name: Run flake regressions tests
-        run: MAX_FLAKES=25 flake-regressions/eval-all.sh
-
-  profile_build:
-    needs: tests
-    runs-on: ubuntu-24.04
-    timeout-minutes: 60
-    if: >-
-      github.event_name == 'push' &&
-      github.ref_name == 'master'
-    steps:
-    - uses: actions/checkout@v6
-      with:
-        fetch-depth: 0
-    - uses: ./.github/actions/install-nix-action
-      with:
-        github_token: ${{ secrets.GITHUB_TOKEN }}
-        dogfood: ${{ github.event_name == 'workflow_dispatch' && inputs.dogfood || github.event_name != 'workflow_dispatch' }}
-        extra_nix_config: |
-          experimental-features = flakes nix-command ca-derivations impure-derivations
-          max-jobs = 1
-    - run: |
-        nix build -L --file ./ci/gha/profile-build buildTimeReport --out-link build-time-report.md
-        cat build-time-report.md >> $GITHUB_STEP_SUMMARY
+      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - run: nix build --out-link ./new-nix && PATH=$(pwd)/new-nix/bin:$PATH scripts/flake-regressions.sh

.github/workflows/labels.yml

@@ -15,10 +15,10 @@ permissions:
 
 jobs:
   labels:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     if: github.repository_owner == 'NixOS'
     steps:
-    - uses: actions/labeler@v6
+    - uses: actions/labeler@v5
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         sync-labels: false

.github/workflows/upload-release.yml

@@ -1,80 +0,0 @@
-name: Upload Release
-on:
-  workflow_dispatch:
-    inputs:
-      eval_id:
-        description: "Hydra evaluation ID"
-        required: true
-        type: number
-      is_latest:
-        description: "Mark as latest release"
-        required: false
-        type: boolean
-        default: false
-permissions:
-  contents: read
-  id-token: write
-  packages: write
-jobs:
-  release:
-    runs-on: ubuntu-24.04
-    environment: releases
-    steps:
-      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
-      - uses: ./.github/actions/install-nix-action
-        with:
-          dogfood: false # Use stable version
-          use_cache: false # Don't want any cache injection shenanigans
-          extra_nix_config: |
-            experimental-features = nix-command flakes
-      - name: Set NIX_PATH from flake input
-        run: |
-          NIXPKGS_PATH=$(nix build --inputs-from .# nixpkgs#path --print-out-paths --no-link)
-          # Shebangs with perl have issues. Pin nixpkgs this way. nix shell should maybe
-          # get the same uberhack that nix-shell has to support it.
-          echo "NIX_PATH=nixpkgs=$NIXPKGS_PATH" >> "$GITHUB_ENV"
-      - name: Configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@61815dcd50bd041e203e49132bacad1fd04d2708 # v5.1.1
-        with:
-          role-to-assume: "arn:aws:iam::080433136561:role/nix-release"
-          role-session-name: nix-release-oidc-${{ github.run_id }}
-          aws-region: eu-west-1
-      - name: Disable containerd image store
-        run: |
-          # Docker 28+ defaults to the containerd image store, which
-          # pushes layers uncompressed instead of gzip. OCI clients
-          # that only support gzip (e.g. go-containerregistry) fail
-          # with "gzip: invalid header". Disabling the containerd
-          # snapshotter restores the classic storage driver, which
-          # preserves gzip-compressed layers through the
-          # `docker load` / `docker push` pipeline.
-          echo '{"features":{"containerd-snapshotter":false}}' | sudo tee /etc/docker/daemon.json > /dev/null
-          sudo systemctl restart docker
-      - name: Login to Docker Hub
-        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3.7.0
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3.7.0
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-      - name: Upload release
-        run: |
-          ./maintainers/upload-release.pl \
-            ${{ inputs.eval_id }} \
-            --skip-git
-        env:
-          IS_LATEST: ${{ inputs.is_latest && '1' || '' }}
-      - name: Push to GHCR
-        run: |
-          DOCKER_OWNER="ghcr.io/$(echo '${{ github.repository_owner }}' | tr '[A-Z]' '[a-z]')/nix"
-          ./maintainers/upload-release.pl \
-            ${{ inputs.eval_id }} \
-            --skip-git \
-            --skip-s3 \
-            --docker-owner "$DOCKER_OWNER"
-        env:
-          IS_LATEST: ${{ inputs.is_latest && '1' || '' }}

.gitignore

@@ -1,14 +1,113 @@
+Makefile.config
+perl/Makefile.config
+
+# /
+/aclocal.m4
+/autom4te.cache
+/precompiled-headers.h.gch
+/config.*
+/configure
+/stamp-h1
+/svn-revision
+/libtool
+/config/config.*
 # Default meson build dir
 /build
-# Meson creates this file too
-src/.wraplock
+
+# /doc/manual/
+/doc/manual/*.1
+/doc/manual/*.5
+/doc/manual/*.8
+/doc/manual/generated/*
+/doc/manual/nix.json
+/doc/manual/conf-file.json
+/doc/manual/language.json
+/doc/manual/xp-features.json
+/doc/manual/src/SUMMARY.md
+/doc/manual/src/SUMMARY-rl-next.md
+/doc/manual/src/store/types/*
+!/doc/manual/src/store/types/index.md.in
+/doc/manual/src/command-ref/new-cli
+/doc/manual/src/command-ref/conf-file.md
+/doc/manual/src/command-ref/experimental-features-shortlist.md
+/doc/manual/src/contributing/experimental-feature-descriptions.md
+/doc/manual/src/language/builtins.md
+/doc/manual/src/language/builtin-constants.md
+/doc/manual/src/release-notes/rl-next.md
+
+# /scripts/
+/scripts/nix-profile.sh
+/scripts/nix-profile-daemon.sh
+/scripts/nix-profile.fish
+/scripts/nix-profile-daemon.fish
+
+# /subprojects/libexpr/
+/subprojects/libexpr/lexer-tab.cc
+/subprojects/libexpr/lexer-tab.hh
+/subprojects/libexpr/parser-tab.cc
+/subprojects/libexpr/parser-tab.hh
+/subprojects/libexpr/parser-tab.output
+/subprojects/libexpr/nix.tbl
+/subprojects/libexpr/tests
+/tests/unit/libexpr/libnixexpr-tests
+
+# /subprojects/libfetchers
+/tests/unit/libfetchers/libnixfetchers-tests
+
+# /subprojects/libflake
+/tests/unit/libflake/libnixflake-tests
+
+# /subprojects/libstore/
+*.gen.*
+/subprojects/libstore/tests
+/tests/unit/libstore/libnixstore-tests
+
+# /subprojects/libutil/
+/subprojects/libutil/tests
+/tests/unit/libutil/libnixutil-tests
+
+/subprojects/nix/nix
+
+/subprojects/nix/generated-doc
+
+# /subprojects/nix-env/
+/subprojects/nix-env/nix-env
+
+# /subprojects/nix-instantiate/
+/subprojects/nix-instantiate/nix-instantiate
+
+# /subprojects/nix-store/
+/subprojects/nix-store/nix-store
+
+/subprojects/nix-prefetch-url/nix-prefetch-url
+
+/subprojects/nix-collect-garbage/nix-collect-garbage
+
+# /subprojects/nix-channel/
+/subprojects/nix-channel/nix-channel
+
+# /subprojects/nix-build/
+/subprojects/nix-build/nix-build
+
+/subprojects/nix-copy-closure/nix-copy-closure
+
+/subprojects/error-demo/error-demo
+
+/subprojects/build-remote/build-remote
 
 # /tests/functional/
+/tests/functional/test-tmp
 /tests/functional/common/subst-vars.sh
+/tests/functional/result*
 /tests/functional/restricted-innocent
+/tests/functional/shell
+/tests/functional/shell.drv
+/tests/functional/config.nix
+/tests/functional/ca/config.nix
+/tests/functional/dyn-drv/config.nix
+/tests/functional/repl-result-out
 /tests/functional/debugger-test-out
 /tests/functional/test-libstoreconsumer/test-libstoreconsumer
-/tests/functional/nix-shell
 
 # /tests/functional/lang/
 /tests/functional/lang/*.out
@@ -16,9 +115,27 @@ src/.wraplock
 /tests/functional/lang/*.err
 /tests/functional/lang/*.ast
 
-/outputs
+/perl/lib/Nix/Config.pm
+/perl/lib/Nix/Store.cc
 
+/misc/systemd/nix-daemon.service
+/misc/systemd/nix-daemon.socket
+/misc/systemd/nix-daemon.conf
+/misc/upstart/nix-daemon.conf
+
+outputs/
+
+*.a
+*.o
+*.o.tmp
+*.so
+*.dylib
+*.dll
+*.exe
+*.dep
 *~
+*.pc
+*.plist
 
 # GNU Global
 GPATH
@@ -33,6 +150,8 @@ GTAGS
 compile_commands.json
 *.compile_commands.json
 
+nix-rust/target
+
 result
 result-*
 
@@ -47,8 +166,3 @@ result-*
 
 # Mac OS
 .DS_Store
-
-flake-regressions
-
-# direnv
-.direnv/

.mergify.yml

@@ -0,0 +1,92 @@
+queue_rules:
+  - name: default
+    # all required tests need to go here
+    merge_conditions:
+      - check-success=installer
+      - check-success=installer_test (macos-latest)
+      - check-success=installer_test (ubuntu-latest)
+      - check-success=tests (macos-latest)
+      - check-success=tests (ubuntu-latest)
+      - check-success=vm_tests
+    merge_method: rebase
+    batch_size: 5
+
+pull_request_rules:
+  - name: merge using the merge queue
+    conditions:
+      - base~=master|.+-maintenance
+      - label~=merge-queue|dependencies
+    actions:
+      queue: {}
+
+# The rules below will first create backport pull requests and put those in a merge queue.
+
+  - name: backport patches to 2.18
+    conditions:
+      - label=backport 2.18-maintenance
+    actions:
+      backport:
+        branches:
+          - 2.18-maintenance
+        labels:
+          - merge-queue
+
+  - name: backport patches to 2.19
+    conditions:
+      - label=backport 2.19-maintenance
+    actions:
+      backport:
+        branches:
+          - 2.19-maintenance
+        labels:
+          - merge-queue
+
+  - name: backport patches to 2.20
+    conditions:
+      - label=backport 2.20-maintenance
+    actions:
+      backport:
+        branches:
+          - 2.20-maintenance
+        labels:
+          - merge-queue
+
+  - name: backport patches to 2.21
+    conditions:
+      - label=backport 2.21-maintenance
+    actions:
+      backport:
+        branches:
+          - 2.21-maintenance
+        labels:
+          - merge-queue
+
+  - name: backport patches to 2.22
+    conditions:
+      - label=backport 2.22-maintenance
+    actions:
+      backport:
+        branches:
+          - 2.22-maintenance
+        labels:
+          - merge-queue
+
+  - name: backport patches to 2.23
+    conditions:
+      - label=backport 2.23-maintenance
+    actions:
+      backport:
+        branches:
+          - 2.23-maintenance
+        labels:
+          - merge-queue
+
+  - name: backport patches to 2.24
+    conditions:
+      - label=backport 2.24-maintenance
+    actions:
+      backport:
+        branches:
+          - "2.24-maintenance"
+        labels:
+          - merge-queue

.version

@@ -1 +1 @@
-2.34.0
+2.25.0

CONTRIBUTING.md

@@ -77,9 +77,9 @@ Check out the [security policy](https://github.com/NixOS/nix/security/policy).
    - [ ] Fixes an [idea approved](https://github.com/NixOS/nix/labels/idea%20approved) issue
    - [ ] Tests, as appropriate:
      - Functional tests – [`tests/functional/**.sh`](./tests/functional)
-     - Unit tests – [`src/*/tests`](./src/)
+     - Unit tests – [`tests/unit/*`](./tests/unit)
      - Integration tests – [`tests/nixos/*`](./tests/nixos)
-   - [ ] User documentation in the [manual](./doc/manual/source)
+   - [ ] User documentation in the [manual](./doc/manual/src)
    - [ ] API documentation in header files
    - [ ] Code and comments are self-explanatory
    - [ ] Commit message explains **why** the change was made
@@ -89,13 +89,11 @@ Check out the [security policy](https://github.com/NixOS/nix/security/policy).
 
 ## Making changes to the Nix manual
 
-The Nix reference manual is hosted on https://nix.dev/manual/nix.
-The underlying source files are located in [`doc/manual/source`](./doc/manual/source).
+The Nix reference manual is hosted on https://nixos.org/manual/nix.
+The underlying source files are located in [`doc/manual/src`](./doc/manual/src).
 For small changes you can [use GitHub to edit these files](https://docs.github.com/en/repositories/working-with-files/managing-files/editing-files)
 For larger changes see the [Nix reference manual](https://nix.dev/manual/nix/development/development/contributing.html).
 
-You're encouraged to add line breaks at semantic boundaries, per [sembr](https://sembr.org).
-
 ## Getting help
 
 Whenever you're stuck or do not know how to proceed, you can always ask for help.

COPYING

@@ -1,8 +1,8 @@
-                  GNU LESSER GENERAL PUBLIC LICENSE
-                       Version 2.1, February 1999
+		  GNU LESSER GENERAL PUBLIC LICENSE
+		       Version 2.1, February 1999
 
  Copyright (C) 1991, 1999 Free Software Foundation, Inc.
- <https://fsf.org/>
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -10,7 +10,7 @@
  as the successor of the GNU Library Public License, version 2, hence
  the version number 2.1.]
 
-                            Preamble
+			    Preamble
 
   The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@@ -112,7 +112,7 @@ modification follow.  Pay close attention to the difference between a
 former contains code derived from the library, whereas the latter must
 be combined with the library in order to run.
 
-                  GNU LESSER GENERAL PUBLIC LICENSE
+		  GNU LESSER GENERAL PUBLIC LICENSE
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
   0. This License Agreement applies to any software library or other
@@ -146,7 +146,7 @@ such a program is covered only if its contents constitute a work based
 on the Library (independent of the use of the Library in a tool for
 writing it).  Whether that is true depends on what the Library does
 and what the program that uses the Library does.
-
+  
   1. You may copy and distribute verbatim copies of the Library's
 complete source code as you receive it, in any medium, provided that
 you conspicuously and appropriately publish on each copy an
@@ -432,7 +432,7 @@ 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
+			    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.
@@ -455,7 +455,7 @@ 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.
 
-                     END OF TERMS AND CONDITIONS
+		     END OF TERMS AND CONDITIONS
 
            How to Apply These Terms to Your New Libraries
 
@@ -484,7 +484,8 @@ convey the exclusion of warranty; and each file should have at least the
     Lesser General Public License for more details.
 
     You should have received a copy of the GNU Lesser General Public
-    License along with this library; if not, see <https://www.gnu.org/licenses/>.
+    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.
 
@@ -495,7 +496,9 @@ 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.
 
-  <signature of Moe Ghoul>, 1 April 1990
-  Moe Ghoul, President of Vice
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
 
 That's all there is to it!
+
+

HACKING.md

@@ -1 +1 @@
-doc/manual/source/development/building.md
+doc/manual/src/development/building.md

Makefile

@@ -0,0 +1,128 @@
+# External build directory support
+
+include mk/build-dir.mk
+
+-include $(buildprefix)Makefile.config
+clean-files += $(buildprefix)Makefile.config
+
+# List makefiles
+
+include mk/platform.mk
+
+ifeq ($(ENABLE_BUILD), yes)
+makefiles = \
+  mk/precompiled-headers.mk \
+  local.mk \
+  subprojects/libutil/local.mk \
+  subprojects/libstore/local.mk \
+  subprojects/libfetchers/local.mk \
+  subprojects/libmain/local.mk \
+  subprojects/libexpr/local.mk \
+  subprojects/libflake/local.mk \
+  subprojects/libcmd/local.mk \
+  subprojects/nix/local.mk \
+  subprojects/libutil-c/local.mk \
+  subprojects/libstore-c/local.mk \
+  subprojects/libexpr-c/local.mk
+
+ifdef HOST_UNIX
+makefiles += \
+  scripts/local.mk \
+  maintainers/local.mk \
+  misc/bash/local.mk \
+  misc/fish/local.mk \
+  misc/zsh/local.mk \
+  misc/systemd/local.mk \
+  misc/launchd/local.mk \
+  misc/upstart/local.mk
+endif
+endif
+
+ifeq ($(ENABLE_UNIT_TESTS), yes)
+makefiles += \
+  tests/unit/libutil/local.mk \
+  tests/unit/libutil-support/local.mk \
+  tests/unit/libstore/local.mk \
+  tests/unit/libstore-support/local.mk \
+  tests/unit/libfetchers/local.mk \
+  tests/unit/libexpr/local.mk \
+  tests/unit/libexpr-support/local.mk \
+  tests/unit/libflake/local.mk
+endif
+
+ifeq ($(ENABLE_FUNCTIONAL_TESTS), yes)
+ifdef HOST_UNIX
+makefiles += \
+  tests/functional/local.mk \
+  tests/functional/flakes/local.mk \
+  tests/functional/ca/local.mk \
+  tests/functional/git-hashing/local.mk \
+  tests/functional/dyn-drv/local.mk \
+  tests/functional/local-overlay-store/local.mk \
+  tests/functional/test-libstoreconsumer/local.mk \
+  tests/functional/plugins/local.mk
+endif
+endif
+
+# Some makefiles require access to built programs and must be included late.
+makefiles-late =
+
+ifeq ($(ENABLE_DOC_GEN), yes)
+makefiles-late += doc/manual/local.mk
+endif
+
+# Miscellaneous global Flags
+
+OPTIMIZE = 1
+
+ifeq ($(OPTIMIZE), 1)
+  GLOBAL_CXXFLAGS += -O3 $(CXXLTO)
+  GLOBAL_LDFLAGS += $(CXXLTO)
+else
+  GLOBAL_CXXFLAGS += -O0 -U_FORTIFY_SOURCE
+  unexport NIX_HARDENING_ENABLE
+endif
+
+ifdef HOST_WINDOWS
+  # Windows DLLs are stricter about symbol visibility than Unix shared
+  # objects --- see https://gcc.gnu.org/wiki/Visibility for details.
+  # This is a temporary sledgehammer to export everything like on Unix,
+  # and not detail with this yet.
+  #
+  # TODO do not do this, and instead do fine-grained export annotations.
+  GLOBAL_LDFLAGS += -Wl,--export-all-symbols
+endif
+
+GLOBAL_CXXFLAGS += -g -Wall -Wdeprecated-copy -Wignored-qualifiers -Wimplicit-fallthrough -Werror=unused-result -Werror=suggest-override -include $(buildprefix)config.h -std=c++2a -I subprojects
+
+# Include the main lib, causing rules to be defined
+
+include mk/lib.mk
+
+# Fallback stub rules for better UX when things are disabled
+#
+# These must be defined after  Otherwise the first rule
+# incorrectly becomes the default target.
+
+ifneq ($(ENABLE_UNIT_TESTS), yes)
+.PHONY: check
+check:
+	@echo "Unit tests are disabled. Configure without '--disable-unit-tests', or avoid calling 'make check'."
+	@exit 1
+endif
+
+ifneq ($(ENABLE_FUNCTIONAL_TESTS), yes)
+.PHONY: installcheck
+installcheck:
+	@echo "Functional tests are disabled. Configure without '--disable-functional-tests', or avoid calling 'make installcheck'."
+	@exit 1
+endif
+
+# Documentation fallback stub rules.
+
+ifneq ($(ENABLE_DOC_GEN), yes)
+.PHONY: manual-html manpages
+manual-html manpages:
+	@echo "Generated docs are disabled. Configure without '--disable-doc-gen', or avoid calling 'make manpages' and 'make manual-html'."
+	@exit 1
+endif

Makefile.config.in

@@ -0,0 +1,54 @@
+AR = @AR@
+BDW_GC_LIBS = @BDW_GC_LIBS@
+BOOST_LDFLAGS = @BOOST_LDFLAGS@
+BUILD_SHARED_LIBS = @BUILD_SHARED_LIBS@
+CC = @CC@
+CFLAGS = @CFLAGS@
+CXX = @CXX@
+CXXFLAGS = @CXXFLAGS@
+CXXLTO = @CXXLTO@
+EDITLINE_LIBS = @EDITLINE_LIBS@
+ENABLE_BUILD = @ENABLE_BUILD@
+ENABLE_DOC_GEN = @ENABLE_DOC_GEN@
+ENABLE_FUNCTIONAL_TESTS = @ENABLE_FUNCTIONAL_TESTS@
+ENABLE_S3 = @ENABLE_S3@
+ENABLE_UNIT_TESTS = @ENABLE_UNIT_TESTS@
+GTEST_LIBS = @GTEST_LIBS@
+HAVE_LIBCPUID = @HAVE_LIBCPUID@
+HAVE_SECCOMP = @HAVE_SECCOMP@
+HOST_OS = @host_os@
+INSTALL_UNIT_TESTS = @INSTALL_UNIT_TESTS@
+LDFLAGS = @LDFLAGS@
+LIBARCHIVE_LIBS = @LIBARCHIVE_LIBS@
+LIBBROTLI_LIBS = @LIBBROTLI_LIBS@
+LIBCURL_LIBS = @LIBCURL_LIBS@
+LIBGIT2_LIBS = @LIBGIT2_LIBS@
+LIBSECCOMP_LIBS = @LIBSECCOMP_LIBS@
+LOWDOWN_LIBS = @LOWDOWN_LIBS@
+OPENSSL_LIBS = @OPENSSL_LIBS@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+SHELL = @bash@
+SODIUM_LIBS = @SODIUM_LIBS@
+SQLITE3_LIBS = @SQLITE3_LIBS@
+bash = @bash@
+bindir = @bindir@
+checkbindir = @checkbindir@
+checklibdir = @checklibdir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+embedded_sandbox_shell = @embedded_sandbox_shell@
+exec_prefix = @exec_prefix@
+includedir = @includedir@
+libdir = @libdir@
+libexecdir = @libexecdir@
+localstatedir = @localstatedir@
+lsof = @lsof@
+mandir = @mandir@
+pkglibdir = $(libdir)/$(PACKAGE_NAME)
+prefix = @prefix@
+sandbox_shell = @sandbox_shell@
+storedir = @storedir@
+sysconfdir = @sysconfdir@
+system = @system@

README.md

@@ -31,7 +31,7 @@ Today, a world-wide developer community contributes to Nix and the ecosystem tha
 - [Nixpkgs](https://github.com/NixOS/nixpkgs) is [the largest, most up-to-date free software repository in the world](https://repology.org/repositories/graphs)
 - [NixOS](https://github.com/NixOS/nixpkgs/tree/master/nixos) is a Linux distribution that can be configured fully declaratively
 - [Discourse](https://discourse.nixos.org/)
-- Matrix: [#users:nixos.org](https://matrix.to/#/#users:nixos.org) for user support and [#nix-dev:nixos.org](https://matrix.to/#/#nix-dev:nixos.org) for development
+- [Matrix](https://matrix.to/#/#nix:nixos.org)
 
 ## License
 

build-utils-meson/deps-lists/meson.build

@@ -0,0 +1,36 @@
+# These are private dependencies with pkg-config files. What private
+# means is that the dependencies are used by the library but they are
+# *not* used (e.g. `#include`-ed) in any installed header file, and only
+# in regular source code (`*.cc`) or private, uninstalled headers. They
+# are thus part of the *implementation* of the library, but not its
+# *interface*.
+#
+# See `man pkg-config` for some details.
+deps_private = [ ]
+
+# These are public dependencies with pkg-config files. Public is the
+# opposite of private: these dependencies are used in installed header
+# files. They are part of the interface (and implementation) of the
+# library.
+#
+# N.B. This concept is mostly unrelated to our own concept of a public
+# (stable) API, for consumption outside of the Nix repository.
+# `libnixutil` is an unstable C++ library, whose public interface is
+# likewise unstable. `libutilc` conversely is a hopefully-soon stable
+# C library, whose public interface --- including public but not private
+# dependencies --- will also likewise soon be stable.
+#
+# N.B. For distributions that care about "ABI" stability and not just
+# "API" stability, the private dependencies also matter as they can
+# potentially affect the public ABI.
+deps_public = [ ]
+
+# These are subproject deps (type == "internal"). They are other
+# packages in `/src` in this repo. The private vs public distinction is
+# the same as above.
+deps_private_subproject = [ ]
+deps_public_subproject = [ ]
+
+# These are dependencencies without pkg-config files. Ideally they are
+# just private, but they may also be public (e.g. boost).
+deps_other = [ ]

build-utils-meson/diagnostics/meson.build

@@ -0,0 +1,11 @@
+add_project_arguments(
+  '-Wdeprecated-copy',
+  '-Werror=suggest-override',
+  '-Werror=switch',
+  '-Werror=switch-enum',
+  '-Werror=unused-result',
+  '-Wignored-qualifiers',
+  '-Wimplicit-fallthrough',
+  '-Wno-deprecated-declarations',
+  language : 'cpp',
+)

build-utils-meson/export-all-symbols/meson.build

@@ -0,0 +1,11 @@
+if host_machine.system() == 'cygwin' or host_machine.system() == 'windows'
+  # Windows DLLs are stricter about symbol visibility than Unix shared
+  # objects --- see https://gcc.gnu.org/wiki/Visibility for details.
+  # This is a temporary sledgehammer to export everything like on Unix,
+  # and not detail with this yet.
+  #
+  # TODO do not do this, and instead do fine-grained export annotations.
+  linker_export_flags = ['-Wl,--export-all-symbols']
+else
+  linker_export_flags = []
+endif

build-utils-meson/export/meson.build

@@ -0,0 +1,33 @@
+requires_private = []
+foreach dep : deps_private_subproject
+  requires_private  += dep.name()
+endforeach
+requires_private += deps_private
+
+requires_public  = []
+foreach dep : deps_public_subproject
+  requires_public  += dep.name()
+endforeach
+requires_public += deps_public
+
+extra_pkg_config_variables = get_variable('extra_pkg_config_variables', {})
+import('pkgconfig').generate(
+  this_library,
+  filebase : meson.project_name(),
+  name : 'Nix',
+  description : 'Nix Package Manager',
+  subdirs : ['nix'],
+  extra_cflags : ['-std=c++2a'],
+  requires : requires_public,
+  requires_private : requires_private,
+  libraries_private : libraries_private,
+  variables : extra_pkg_config_variables,
+)
+
+meson.override_dependency(meson.project_name(), declare_dependency(
+  include_directories : include_dirs,
+  link_with : this_library,
+  compile_args : ['-std=c++2a'],
+  dependencies : deps_public_subproject + deps_public,
+  variables : extra_pkg_config_variables,
+))

build-utils-meson/generate-header/meson.build

@@ -0,0 +1,7 @@
+bash = find_program('bash', native: true)
+
+gen_header = generator(
+  bash,
+  arguments : [ '-c', '{ echo \'R"__NIX_STR(\' && cat @INPUT@ && echo \')__NIX_STR"\'; } > "$1"', '_ignored_argv0', '@OUTPUT@' ],
+  output : '@PLAINNAME@.gen.hh',
+)

build-utils-meson/threads/meson.build

@@ -0,0 +1,6 @@
+# This is only conditional to work around
+# https://github.com/mesonbuild/meson/issues/13293. It should be
+# unconditional.
+if not (host_machine.system() == 'windows' and cxx.get_id() == 'gcc')
+  deps_private += dependency('threads')
+endif

ci/gha/profile-build/default.nix

@@ -1,101 +0,0 @@
-{
-  nixFlake ? builtins.getFlake ("git+file://" + toString ../../..),
-  system ? builtins.currentSystem,
-  pkgs ? nixFlake.inputs.nixpkgs.legacyPackages.${system},
-}:
-
-let
-  inherit (pkgs) lib;
-
-  nixComponentsInstrumented =
-    (nixFlake.lib.makeComponents {
-      inherit pkgs;
-      getStdenv = p: p.clangStdenv;
-    }).overrideScope
-      (
-        _: _: {
-          mesonComponentOverrides = finalAttrs: prevAttrs: {
-            outputs = (prevAttrs.outputs or [ "out" ]) ++ [ "buildprofile" ];
-            nativeBuildInputs = [ pkgs.clangbuildanalyzer ] ++ prevAttrs.nativeBuildInputs or [ ];
-            __impure = true;
-
-            env = {
-              CFLAGS = "-ftime-trace";
-              CXXFLAGS = "-ftime-trace";
-            };
-
-            preBuild = ''
-              ClangBuildAnalyzer --start $PWD
-            '';
-
-            postBuild = ''
-              ClangBuildAnalyzer --stop $PWD $buildprofile
-            '';
-          };
-        }
-      );
-
-  componentsToProfile = {
-    "nix-util" = { };
-    "nix-util-c" = { };
-    "nix-util-test-support" = { };
-    "nix-util-tests" = { };
-    "nix-store" = { };
-    "nix-store-c" = { };
-    "nix-store-test-support" = { };
-    "nix-store-tests" = { };
-    "nix-fetchers" = { };
-    "nix-fetchers-c" = { };
-    "nix-fetchers-tests" = { };
-    "nix-expr" = { };
-    "nix-expr-c" = { };
-    "nix-expr-test-support" = { };
-    "nix-expr-tests" = { };
-    "nix-flake" = { };
-    "nix-flake-c" = { };
-    "nix-flake-tests" = { };
-    "nix-main" = { };
-    "nix-main-c" = { };
-    "nix-cmd" = { };
-    "nix-cli" = { };
-  };
-
-  componentDerivationsToProfile = builtins.intersectAttrs componentsToProfile nixComponentsInstrumented;
-  componentBuildProfiles = lib.mapAttrs (
-    n: v: lib.getOutput "buildprofile" v
-  ) componentDerivationsToProfile;
-
-  buildTimeReport =
-    pkgs.runCommand "build-time-report"
-      {
-        __impure = true;
-        __structuredAttrs = true;
-        nativeBuildInputs = [ pkgs.clangbuildanalyzer ];
-        inherit componentBuildProfiles;
-      }
-      ''
-        {
-          echo "# Build time performance profile for components:"
-          echo
-          echo "This reports the build profile collected via \`-ftime-trace\` for each component."
-          echo
-        } >> $out
-
-        for name in "''\${!componentBuildProfiles[@]}"; do
-          {
-            echo "<details><summary><strong>$name</strong></summary>"
-            echo
-            echo '````'
-            ClangBuildAnalyzer --analyze "''\${componentBuildProfiles[$name]}"
-            echo '````'
-            echo
-            echo "</details>"
-          } >> $out
-        done
-      '';
-in
-
-{
-  inherit buildTimeReport;
-  inherit componentDerivationsToProfile;
-}

ci/gha/tests/build-checks

@@ -1,6 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-system=$(nix eval --raw --impure --expr builtins.currentSystem)
-nix eval --json ".#checks.$system" --apply builtins.attrNames | \
-  jq -r '.[]' | \
-  xargs -P0 -I '{}' sh -c "nix build -L .#checks.$system.{} || { echo 'FAILED: \033[0;31mnix build -L .#checks.$system.{}\\033[0m'; kill 0; }"

ci/gha/tests/default.nix

@@ -1,257 +0,0 @@
-{
-  nixFlake ? builtins.getFlake ("git+file://" + toString ../../..),
-  system ? builtins.currentSystem,
-  pkgs ? nixFlake.inputs.nixpkgs.legacyPackages.${system},
-  nixComponents ? (
-    nixFlake.lib.makeComponents {
-      inherit pkgs;
-      inherit getStdenv;
-    }
-  ),
-  getStdenv ? p: p.stdenv,
-  componentTestsPrefix ? "",
-  withSanitizers ? false,
-  withCoverage ? false,
-  ...
-}:
-
-let
-  inherit (pkgs) lib;
-  hydraJobs = nixFlake.hydraJobs;
-  packages' = nixFlake.packages.${system};
-  stdenv = (getStdenv pkgs);
-
-  collectCoverageLayer = finalAttrs: prevAttrs: {
-    env =
-      let
-        # https://clang.llvm.org/docs/SourceBasedCodeCoverage.html#the-code-coverage-workflow
-        coverageFlags = [
-          "-fprofile-instr-generate"
-          "-fcoverage-mapping"
-        ];
-      in
-      {
-        CFLAGS = toString coverageFlags;
-        CXXFLAGS = toString coverageFlags;
-      };
-
-    # Done in a pre-configure hook, because $NIX_BUILD_TOP needs to be substituted.
-    preConfigure = prevAttrs.preConfigure or "" + ''
-      mappingFlag=" -fcoverage-prefix-map=$NIX_BUILD_TOP/${finalAttrs.src.name}=${finalAttrs.src}"
-      CFLAGS+="$mappingFlag"
-      CXXFLAGS+="$mappingFlag"
-    '';
-  };
-
-  componentOverrides = (lib.optional withCoverage collectCoverageLayer);
-in
-
-rec {
-  nixComponentsInstrumented = nixComponents.overrideScope (
-    final: prev: {
-      withASan = withSanitizers;
-      withUBSan = withSanitizers;
-
-      nix-store-tests = prev.nix-store-tests.override { withBenchmarks = true; };
-      # Boehm is incompatible with ASAN.
-      nix-expr = prev.nix-expr.override { enableGC = !withSanitizers; };
-
-      mesonComponentOverrides = lib.composeManyExtensions componentOverrides;
-      # Unclear how to make Perl bindings work with a dynamically linked ASAN.
-      nix-perl-bindings = if withSanitizers then null else prev.nix-perl-bindings;
-    }
-  );
-
-  # Import NixOS tests using the instrumented components
-  nixosTests = import ../../../tests/nixos {
-    inherit lib pkgs;
-    nixComponents = nixComponentsInstrumented;
-    nixpkgs = nixFlake.inputs.nixpkgs;
-    inherit (nixFlake.inputs) nixpkgs-23-11;
-  };
-
-  /**
-    Top-level tests for the flake outputs, as they would be built by hydra.
-    These tests generally can't be overridden to run with sanitizers.
-  */
-  topLevel = {
-    installerScriptForGHA = hydraJobs.installerScriptForGHA.${system};
-    installTests = hydraJobs.installTests.${system};
-    nixpkgsLibTests = hydraJobs.tests.nixpkgsLibTests.${system};
-    rl-next = pkgs.buildPackages.runCommand "test-rl-next-release-notes" { } ''
-      LANG=C.UTF-8 ${pkgs.changelog-d}/bin/changelog-d ${../../../doc/manual/rl-next} >$out
-    '';
-    repl-completion = pkgs.callPackage ../../../tests/repl-completion.nix { inherit (packages') nix; };
-
-    /**
-      Checks for our packaging expressions.
-      This shouldn't build anything significant; just check that things
-      (including derivations) are _set up_ correctly.
-    */
-    packaging-overriding =
-      let
-        nix = packages'.nix;
-      in
-      assert (nix.appendPatches [ pkgs.emptyFile ]).libs.nix-util.src.patches == [ pkgs.emptyFile ];
-      if pkgs.stdenv.buildPlatform.isDarwin then
-        lib.warn "packaging-overriding check currently disabled because of a permissions issue on macOS" pkgs.emptyFile
-      else
-        # If this fails, something might be wrong with how we've wired the scope,
-        # or something could be broken in Nixpkgs.
-        pkgs.testers.testEqualContents {
-          assertion = "trivial patch does not change source contents";
-          expected = "${../../..}";
-          actual =
-            # Same for all components; nix-util is an arbitrary pick
-            (nix.appendPatches [ pkgs.emptyFile ]).libs.nix-util.src;
-        };
-  };
-
-  disable =
-    let
-      inherit (pkgs.stdenv) hostPlatform;
-    in
-    args@{
-      pkgName,
-      testName,
-      test,
-    }:
-    lib.any (b: b) [
-      # FIXME: Nix manual is impure and does not produce all settings on darwin
-      (hostPlatform.isDarwin && pkgName == "nix-manual" && testName == "linkcheck")
-    ];
-
-  componentTests =
-    (lib.concatMapAttrs (
-      pkgName: pkg:
-      lib.concatMapAttrs (
-        testName: test:
-        lib.optionalAttrs (!disable { inherit pkgName testName test; }) {
-          "${componentTestsPrefix}${pkgName}-${testName}" = test;
-        }
-      ) (pkg.tests or { })
-    ) nixComponentsInstrumented)
-    // lib.optionalAttrs (pkgs.stdenv.hostPlatform == pkgs.stdenv.buildPlatform) {
-      "${componentTestsPrefix}nix-functional-tests" = nixComponentsInstrumented.nix-functional-tests;
-      "${componentTestsPrefix}nix-json-schema-checks" = nixComponentsInstrumented.nix-json-schema-checks;
-    };
-
-  codeCoverage =
-    let
-      componentsTestsToProfile =
-        (builtins.mapAttrs (n: v: nixComponentsInstrumented.${n}.tests.run) {
-          "nix-util-tests" = { };
-          "nix-store-tests" = { };
-          "nix-fetchers-tests" = { };
-          "nix-expr-tests" = { };
-          "nix-flake-tests" = { };
-        })
-        // {
-          inherit (nixComponentsInstrumented) nix-functional-tests;
-        };
-
-      coverageProfileDrvs = lib.mapAttrs (
-        n: v:
-        v.overrideAttrs (
-          finalAttrs: prevAttrs: {
-            outputs = (prevAttrs.outputs or [ "out" ]) ++ [ "profraw" ];
-            env = {
-              LLVM_PROFILE_FILE = "${placeholder "profraw"}/%m";
-            };
-          }
-        )
-      ) componentsTestsToProfile;
-
-      coverageProfiles = lib.mapAttrsToList (n: v: lib.getOutput "profraw" v) coverageProfileDrvs;
-
-      mergedProfdata =
-        pkgs.runCommand "merged-profdata"
-          {
-            __structuredAttrs = true;
-            nativeBuildInputs = [ pkgs.llvmPackages.libllvm ];
-            inherit coverageProfiles;
-          }
-          ''
-            rawProfiles=()
-            for dir in "''\${coverageProfiles[@]}"; do
-              rawProfiles+=($dir/*)
-            done
-            llvm-profdata merge -sparse -output $out "''\${rawProfiles[@]}"
-          '';
-
-      coverageReports =
-        let
-          nixComponentDrvs = lib.filter (lib.isDerivation) (lib.attrValues nixComponentsInstrumented);
-        in
-        pkgs.runCommand "code-coverage-report"
-          {
-            nativeBuildInputs = [
-              pkgs.llvmPackages.libllvm
-              pkgs.jq
-            ];
-            __structuredAttrs = true;
-            nixComponents = nixComponentDrvs;
-          }
-          ''
-            # ${toString (lib.map (v: v.src) nixComponentDrvs)}
-
-            binaryFiles=()
-            for dir in "''\${nixComponents[@]}"; do
-              readarray -t filesInDir < <(find "$dir" -type f -executable)
-              binaryFiles+=("''\${filesInDir[@]}")
-            done
-
-            arguments=$(concatStringsSep " -object " binaryFiles)
-            llvm-cov show $arguments -instr-profile ${mergedProfdata} -output-dir $out -format=html
-
-            {
-              echo "# Code coverage summary (generated via \`llvm-cov\`):"
-              echo
-              echo '```'
-              llvm-cov report $arguments -instr-profile ${mergedProfdata} -format=text -use-color=false
-              echo '```'
-              echo
-            } >> $out/index.txt
-
-            llvm-cov export $arguments -instr-profile ${mergedProfdata} -format=text > $out/coverage.json
-
-            mkdir -p $out/nix-support
-
-            coverageTotals=$(jq ".data[0].totals" $out/coverage.json)
-
-            # Mostly inline from pkgs/build-support/setup-hooks/make-coverage-analysis-report.sh [1],
-            # which we can't use here, because we rely on LLVM's infra for source code coverage collection.
-            # [1]: https://github.com/NixOS/nixpkgs/blob/67bb48c4c8e327417d6d5aa7e538244b209e852b/pkgs/build-support/setup-hooks/make-coverage-analysis-report.sh#L16
-            declare -A metricsArray=(["lineCoverage"]="lines" ["functionCoverage"]="functions" ["branchCoverage"]="branches")
-
-            for metricName in "''\${!metricsArray[@]}"; do
-              key="''\${metricsArray[$metricName]}"
-              metric=$(echo "$coverageTotals" | jq ".$key.percent * 10 | round / 10")
-              echo "$metricName $metric %" >> $out/nix-support/hydra-metrics
-            done
-
-            echo "report coverage $out" >> $out/nix-support/hydra-build-products
-          '';
-    in
-    assert withCoverage;
-    assert stdenv.cc.isClang;
-    {
-      inherit coverageProfileDrvs mergedProfdata coverageReports;
-    };
-
-  vmTests = {
-    inherit (nixosTests) s3-binary-cache-store;
-  }
-  // lib.optionalAttrs (!withSanitizers && !withCoverage) {
-    # evalNixpkgs uses non-instrumented components from hydraJobs, so only run it
-    # when not testing with sanitizers to avoid rebuilding nix
-    inherit (hydraJobs.tests) evalNixpkgs;
-    # FIXME: CI times out when building vm tests instrumented
-    inherit (nixosTests)
-      functional_user
-      githubFlakes
-      nix-docker
-      tarballFlakes
-      ;
-  };
-}

ci/gha/tests/pre-commit-checks

@@ -1,24 +0,0 @@
-#!/usr/bin/env bash
-
-set -euo pipefail
-
-system=$(nix eval --raw --impure --expr builtins.currentSystem)
-
-echo "::group::Running pre-commit checks"
-
-if nix build ".#checks.$system.pre-commit" -L; then
-    echo "::endgroup::"
-    exit 0
-fi
-
-echo "::error ::Changes do not pass pre-commit checks"
-
-cat <<EOF
-The code isn't formatted or doesn't pass lints. You can run pre-commit locally with:
-
-    nix develop -c ./maintainers/format.sh
-EOF
-
-echo "::endgroup::"
-
-exit 1

ci/gha/tests/prepare-installer-for-github-actions

@@ -1,11 +0,0 @@
-#!/usr/bin/env bash
-
-set -euo pipefail
-
-nix build -L ".#installerScriptForGHA" ".#binaryTarball"
-
-mkdir -p out
-cp ./result/install "out/install"
-name="$(basename "$(realpath ./result-1)")"
-# everything before the first dash
-cp -r ./result-1 "out/${name%%-*}"

ci/gha/tests/wrapper.nix

@@ -1,16 +0,0 @@
-{
-  nixFlake ? builtins.getFlake ("git+file://" + toString ../../..),
-  system ? builtins.currentSystem,
-  pkgs ? nixFlake.inputs.nixpkgs.legacyPackages.${system},
-  stdenv ? "stdenv",
-  componentTestsPrefix ? "",
-  withInstrumentation ? false,
-}@args:
-import ./. (
-  args
-  // {
-    getStdenv = p: p.${stdenv};
-    withSanitizers = withInstrumentation;
-    withCoverage = withInstrumentation;
-  }
-)

config/install-sh

@@ -0,0 +1,527 @@
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2011-11-20.07; # UTC
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# 'make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+
+nl='
+'
+IFS=" ""	$nl"
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit=${DOITPROG-}
+if test -z "$doit"; then
+  doit_exec=exec
+else
+  doit_exec=$doit
+fi
+
+# Put in absolute file names if you don't have them in your path;
+# or use environment vars.
+
+chgrpprog=${CHGRPPROG-chgrp}
+chmodprog=${CHMODPROG-chmod}
+chownprog=${CHOWNPROG-chown}
+cmpprog=${CMPPROG-cmp}
+cpprog=${CPPROG-cp}
+mkdirprog=${MKDIRPROG-mkdir}
+mvprog=${MVPROG-mv}
+rmprog=${RMPROG-rm}
+stripprog=${STRIPPROG-strip}
+
+posix_glob='?'
+initialize_posix_glob='
+  test "$posix_glob" != "?" || {
+    if (set -f) 2>/dev/null; then
+      posix_glob=
+    else
+      posix_glob=:
+    fi
+  }
+'
+
+posix_mkdir=
+
+# Desired mode of installed file.
+mode=0755
+
+chgrpcmd=
+chmodcmd=$chmodprog
+chowncmd=
+mvcmd=$mvprog
+rmcmd="$rmprog -f"
+stripcmd=
+
+src=
+dst=
+dir_arg=
+dst_arg=
+
+copy_on_change=false
+no_target_directory=
+
+usage="\
+Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+   or: $0 [OPTION]... SRCFILES... DIRECTORY
+   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+   or: $0 [OPTION]... -d DIRECTORIES...
+
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
+
+Options:
+     --help     display this help and exit.
+     --version  display version info and exit.
+
+  -c            (ignored)
+  -C            install only if different (preserve the last data modification time)
+  -d            create directories instead of installing files.
+  -g GROUP      $chgrpprog installed files to GROUP.
+  -m MODE       $chmodprog installed files to MODE.
+  -o USER       $chownprog installed files to USER.
+  -s            $stripprog installed files.
+  -t DIRECTORY  install into DIRECTORY.
+  -T            report an error if DSTFILE is a directory.
+
+Environment variables override the default commands:
+  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
+  RMPROG STRIPPROG
+"
+
+while test $# -ne 0; do
+  case $1 in
+    -c) ;;
+
+    -C) copy_on_change=true;;
+
+    -d) dir_arg=true;;
+
+    -g) chgrpcmd="$chgrpprog $2"
+	shift;;
+
+    --help) echo "$usage"; exit $?;;
+
+    -m) mode=$2
+	case $mode in
+	  *' '* | *'	'* | *'
+'*	  | *'*'* | *'?'* | *'['*)
+	    echo "$0: invalid mode: $mode" >&2
+	    exit 1;;
+	esac
+	shift;;
+
+    -o) chowncmd="$chownprog $2"
+	shift;;
+
+    -s) stripcmd=$stripprog;;
+
+    -t) dst_arg=$2
+	# Protect names problematic for 'test' and other utilities.
+	case $dst_arg in
+	  -* | [=\(\)!]) dst_arg=./$dst_arg;;
+	esac
+	shift;;
+
+    -T) no_target_directory=true;;
+
+    --version) echo "$0 $scriptversion"; exit $?;;
+
+    --)	shift
+	break;;
+
+    -*)	echo "$0: invalid option: $1" >&2
+	exit 1;;
+
+    *)  break;;
+  esac
+  shift
+done
+
+if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
+  # When -d is used, all remaining arguments are directories to create.
+  # When -t is used, the destination is already specified.
+  # Otherwise, the last argument is the destination.  Remove it from $@.
+  for arg
+  do
+    if test -n "$dst_arg"; then
+      # $@ is not empty: it contains at least $arg.
+      set fnord "$@" "$dst_arg"
+      shift # fnord
+    fi
+    shift # arg
+    dst_arg=$arg
+    # Protect names problematic for 'test' and other utilities.
+    case $dst_arg in
+      -* | [=\(\)!]) dst_arg=./$dst_arg;;
+    esac
+  done
+fi
+
+if test $# -eq 0; then
+  if test -z "$dir_arg"; then
+    echo "$0: no input file specified." >&2
+    exit 1
+  fi
+  # It's OK to call 'install-sh -d' without argument.
+  # This can happen when creating conditional directories.
+  exit 0
+fi
+
+if test -z "$dir_arg"; then
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 15
+
+  # Set umask so as not to create temps with too-generous modes.
+  # However, 'strip' requires both read and write access to temps.
+  case $mode in
+    # Optimize common cases.
+    *644) cp_umask=133;;
+    *755) cp_umask=22;;
+
+    *[0-7])
+      if test -z "$stripcmd"; then
+	u_plus_rw=
+      else
+	u_plus_rw='% 200'
+      fi
+      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
+    *)
+      if test -z "$stripcmd"; then
+	u_plus_rw=
+      else
+	u_plus_rw=,u+rw
+      fi
+      cp_umask=$mode$u_plus_rw;;
+  esac
+fi
+
+for src
+do
+  # Protect names problematic for 'test' and other utilities.
+  case $src in
+    -* | [=\(\)!]) src=./$src;;
+  esac
+
+  if test -n "$dir_arg"; then
+    dst=$src
+    dstdir=$dst
+    test -d "$dstdir"
+    dstdir_status=$?
+  else
+
+    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+    # might cause directories to be created, which would be especially bad
+    # if $src (and thus $dsttmp) contains '*'.
+    if test ! -f "$src" && test ! -d "$src"; then
+      echo "$0: $src does not exist." >&2
+      exit 1
+    fi
+
+    if test -z "$dst_arg"; then
+      echo "$0: no destination specified." >&2
+      exit 1
+    fi
+    dst=$dst_arg
+
+    # If destination is a directory, append the input filename; won't work
+    # if double slashes aren't ignored.
+    if test -d "$dst"; then
+      if test -n "$no_target_directory"; then
+	echo "$0: $dst_arg: Is a directory" >&2
+	exit 1
+      fi
+      dstdir=$dst
+      dst=$dstdir/`basename "$src"`
+      dstdir_status=0
+    else
+      # Prefer dirname, but fall back on a substitute if dirname fails.
+      dstdir=`
+	(dirname "$dst") 2>/dev/null ||
+	expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	     X"$dst" : 'X\(//\)[^/]' \| \
+	     X"$dst" : 'X\(//\)$' \| \
+	     X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
+	echo X"$dst" |
+	    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+		   s//\1/
+		   q
+		 }
+		 /^X\(\/\/\)[^/].*/{
+		   s//\1/
+		   q
+		 }
+		 /^X\(\/\/\)$/{
+		   s//\1/
+		   q
+		 }
+		 /^X\(\/\).*/{
+		   s//\1/
+		   q
+		 }
+		 s/.*/./; q'
+      `
+
+      test -d "$dstdir"
+      dstdir_status=$?
+    fi
+  fi
+
+  obsolete_mkdir_used=false
+
+  if test $dstdir_status != 0; then
+    case $posix_mkdir in
+      '')
+	# Create intermediate dirs using mode 755 as modified by the umask.
+	# This is like FreeBSD 'install' as of 1997-10-28.
+	umask=`umask`
+	case $stripcmd.$umask in
+	  # Optimize common cases.
+	  *[2367][2367]) mkdir_umask=$umask;;
+	  .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
+
+	  *[0-7])
+	    mkdir_umask=`expr $umask + 22 \
+	      - $umask % 100 % 40 + $umask % 20 \
+	      - $umask % 10 % 4 + $umask % 2
+	    `;;
+	  *) mkdir_umask=$umask,go-w;;
+	esac
+
+	# With -d, create the new directory with the user-specified mode.
+	# Otherwise, rely on $mkdir_umask.
+	if test -n "$dir_arg"; then
+	  mkdir_mode=-m$mode
+	else
+	  mkdir_mode=
+	fi
+
+	posix_mkdir=false
+	case $umask in
+	  *[123567][0-7][0-7])
+	    # POSIX mkdir -p sets u+wx bits regardless of umask, which
+	    # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
+	    ;;
+	  *)
+	    tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+	    trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
+
+	    if (umask $mkdir_umask &&
+		exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
+	    then
+	      if test -z "$dir_arg" || {
+		   # Check for POSIX incompatibilities with -m.
+		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+		   # other-writable bit of parent directory when it shouldn't.
+		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
+		   case $ls_ld_tmpdir in
+		     d????-?r-*) different_mode=700;;
+		     d????-?--*) different_mode=755;;
+		     *) false;;
+		   esac &&
+		   $mkdirprog -m$different_mode -p -- "$tmpdir" && {
+		     ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
+		     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+		   }
+		 }
+	      then posix_mkdir=:
+	      fi
+	      rmdir "$tmpdir/d" "$tmpdir"
+	    else
+	      # Remove any dirs left behind by ancient mkdir implementations.
+	      rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
+	    fi
+	    trap '' 0;;
+	esac;;
+    esac
+
+    if
+      $posix_mkdir && (
+	umask $mkdir_umask &&
+	$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+      )
+    then :
+    else
+
+      # The umask is ridiculous, or mkdir does not conform to POSIX,
+      # or it failed possibly due to a race condition.  Create the
+      # directory the slow way, step by step, checking for races as we go.
+
+      case $dstdir in
+	/*) prefix='/';;
+	[-=\(\)!]*) prefix='./';;
+	*)  prefix='';;
+      esac
+
+      eval "$initialize_posix_glob"
+
+      oIFS=$IFS
+      IFS=/
+      $posix_glob set -f
+      set fnord $dstdir
+      shift
+      $posix_glob set +f
+      IFS=$oIFS
+
+      prefixes=
+
+      for d
+      do
+	test X"$d" = X && continue
+
+	prefix=$prefix$d
+	if test -d "$prefix"; then
+	  prefixes=
+	else
+	  if $posix_mkdir; then
+	    (umask=$mkdir_umask &&
+	     $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+	    # Don't fail if two instances are running concurrently.
+	    test -d "$prefix" || exit 1
+	  else
+	    case $prefix in
+	      *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+	      *) qprefix=$prefix;;
+	    esac
+	    prefixes="$prefixes '$qprefix'"
+	  fi
+	fi
+	prefix=$prefix/
+      done
+
+      if test -n "$prefixes"; then
+	# Don't fail if two instances are running concurrently.
+	(umask $mkdir_umask &&
+	 eval "\$doit_exec \$mkdirprog $prefixes") ||
+	  test -d "$dstdir" || exit 1
+	obsolete_mkdir_used=true
+      fi
+    fi
+  fi
+
+  if test -n "$dir_arg"; then
+    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
+    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
+      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
+  else
+
+    # Make a couple of temp file names in the proper directory.
+    dsttmp=$dstdir/_inst.$$_
+    rmtmp=$dstdir/_rm.$$_
+
+    # Trap to clean up those temp files at exit.
+    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
+
+    # Copy the file name to the temp name.
+    (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
+
+    # and set any options; do chmod last to preserve setuid bits.
+    #
+    # If any of these fail, we abort the whole thing.  If we want to
+    # ignore errors from any of these, just make sure not to ignore
+    # errors from the above "$doit $cpprog $src $dsttmp" command.
+    #
+    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
+    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
+    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
+
+    # If -C, don't bother to copy if it wouldn't change the file.
+    if $copy_on_change &&
+       old=`LC_ALL=C ls -dlL "$dst"	2>/dev/null` &&
+       new=`LC_ALL=C ls -dlL "$dsttmp"	2>/dev/null` &&
+
+       eval "$initialize_posix_glob" &&
+       $posix_glob set -f &&
+       set X $old && old=:$2:$4:$5:$6 &&
+       set X $new && new=:$2:$4:$5:$6 &&
+       $posix_glob set +f &&
+
+       test "$old" = "$new" &&
+       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
+    then
+      rm -f "$dsttmp"
+    else
+      # Rename the file to the real destination.
+      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
+
+      # The rename failed, perhaps because mv can't rename something else
+      # to itself, or perhaps because mv is so ancient that it does not
+      # support -f.
+      {
+	# Now remove or move aside any old file at destination location.
+	# We try this two ways since rm can't unlink itself on some
+	# systems and the destination file might be busy for other
+	# reasons.  In this case, the final cleanup might fail but the new
+	# file should still install successfully.
+	{
+	  test ! -f "$dst" ||
+	  $doit $rmcmd -f "$dst" 2>/dev/null ||
+	  { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+	    { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
+	  } ||
+	  { echo "$0: cannot unlink or rename $dst" >&2
+	    (exit 1); exit 1
+	  }
+	} &&
+
+	# Now rename the file to the real destination.
+	$doit $mvcmd "$dsttmp" "$dst"
+      }
+    fi || exit 1
+
+    trap '' 0
+  fi
+done
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:

configure.ac

@@ -0,0 +1,447 @@
+AC_INIT([nix],[m4_esyscmd(bash -c "echo -n $(cat ./.version)$VERSION_SUFFIX")])
+AC_CONFIG_MACRO_DIRS([m4])
+AC_CONFIG_SRCDIR(README.md)
+AC_CONFIG_AUX_DIR(config)
+
+AC_PROG_SED
+
+# Construct a Nix system name (like "i686-linux"):
+# https://www.gnu.org/software/autoconf/manual/html_node/Canonicalizing.html#index-AC_005fCANONICAL_005fHOST-1
+# The inital value is produced by the `config/config.guess` script:
+# upstream: https://git.savannah.gnu.org/cgit/config.git/tree/config.guess
+# It has the following form, which is not documented anywhere:
+# <cpu>-<vendor>-<os>[<version>][-<abi>]
+# If `./configure` is passed any of the `--host`, `--build`, `--target` options, the value comes from `config/config.sub` instead:
+# upstream: https://git.savannah.gnu.org/cgit/config.git/tree/config.sub
+AC_CANONICAL_HOST
+AC_MSG_CHECKING([for the canonical Nix system name])
+
+AC_ARG_WITH(system, AS_HELP_STRING([--with-system=SYSTEM],[Platform identifier (e.g., `i686-linux').]),
+  [system=$withval],
+  [case "$host_cpu" in
+     i*86)
+        machine_name="i686";;
+     amd64)
+        machine_name="x86_64";;
+     armv6|armv7)
+        machine_name="${host_cpu}l";;
+     *)
+        machine_name="$host_cpu";;
+   esac
+
+   case "$host_os" in
+     linux-gnu*|linux-musl*)
+        # For backward compatibility, strip the `-gnu' part.
+        system="$machine_name-linux";;
+     *)
+        # Strip the version number from names such as `gnu0.3',
+        # `darwin10.2.0', etc.
+        system="$machine_name-`echo $host_os | "$SED" -e's/@<:@0-9.@:>@*$//g'`";;
+   esac])
+
+AC_MSG_RESULT($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" = '${prefix}/var' && localstatedir=/nix/var
+
+# Assign a default value to C{,XX}FLAGS as the default configure script sets them
+# to -O2 otherwise, which we don't want to have hardcoded
+CFLAGS=${CFLAGS-""}
+CXXFLAGS=${CXXFLAGS-""}
+
+AC_PROG_CC
+AC_PROG_CXX
+AC_PROG_CPP
+
+AC_CHECK_TOOL([AR], [ar])
+
+# Use 64-bit file system calls so that we can support files > 2 GiB.
+AC_SYS_LARGEFILE
+
+
+# Solaris-specific stuff.
+case "$host_os" in
+  solaris*)
+    # Solaris requires -lsocket -lnsl for network functions
+    LDFLAGS="-lsocket -lnsl $LDFLAGS"
+    ;;
+esac
+
+
+ENSURE_NO_GCC_BUG_80431
+
+
+# Check for pubsetbuf.
+AC_MSG_CHECKING([for pubsetbuf])
+AC_LANG_PUSH(C++)
+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(no))
+AC_LANG_POP(C++)
+
+
+AC_CHECK_FUNCS([statvfs pipe2 close_range])
+
+
+# Check for lutimes, optionally used for changing the mtime of
+# symlinks.
+AC_CHECK_FUNCS([lutimes])
+
+
+# Check whether the store optimiser can optimise symlinks.
+AC_MSG_CHECKING([whether it is possible to create a link to a symlink])
+ln -s bla tmp_link
+if ln tmp_link tmp_link2 2> /dev/null; then
+    AC_MSG_RESULT(yes)
+    AC_DEFINE(CAN_LINK_SYMLINK, 1, [Whether link() works on symlinks.])
+else
+    AC_MSG_RESULT(no)
+fi
+rm -f tmp_link tmp_link2
+
+
+# Check for <locale>.
+AC_LANG_PUSH(C++)
+AC_CHECK_HEADERS([locale])
+AC_LANG_POP(C++)
+
+
+AC_DEFUN([NEED_PROG],
+[
+AC_PATH_PROG($1, $2)
+if test -z "$$1"; then
+    AC_MSG_ERROR([$2 is required])
+fi
+])
+
+NEED_PROG(bash, bash)
+AC_PATH_PROG(flex, flex, false)
+AC_PATH_PROG(bison, bison, false)
+AC_PATH_PROG(dot, dot)
+AC_PATH_PROG(lsof, lsof, lsof)
+
+
+AC_SUBST(coreutils, [$(dirname $(type -p cat))])
+
+
+AC_ARG_WITH(store-dir, AS_HELP_STRING([--with-store-dir=PATH],[path of the Nix store (defaults to /nix/store)]),
+  storedir=$withval, storedir='/nix/store')
+AC_SUBST(storedir)
+
+
+# Running the functional tests without building Nix is useful for testing
+# different pre-built versions of Nix against each other.
+AC_ARG_ENABLE(build, AS_HELP_STRING([--disable-build],[Do not build nix]),
+  ENABLE_BUILD=$enableval, ENABLE_BUILD=yes)
+AC_SUBST(ENABLE_BUILD)
+
+# Building without unit tests is useful for bootstrapping with a smaller footprint
+# or running the tests in a separate derivation. Otherwise, we do compile and
+# run them.
+
+AC_ARG_ENABLE(unit-tests, AS_HELP_STRING([--disable-unit-tests],[Do not build the tests]),
+  ENABLE_UNIT_TESTS=$enableval, ENABLE_UNIT_TESTS=$ENABLE_BUILD)
+AC_SUBST(ENABLE_UNIT_TESTS)
+
+AS_IF(
+  [test "$ENABLE_BUILD" == "no" && test "$ENABLE_UNIT_TESTS" == "yes"],
+  [AC_MSG_ERROR([Cannot enable unit tests when building overall is disabled. Please do not pass '--enable-unit-tests' or do not pass '--disable-build'.])])
+
+AC_ARG_ENABLE(functional-tests, AS_HELP_STRING([--disable-functional-tests],[Do not build the tests]),
+  ENABLE_FUNCTIONAL_TESTS=$enableval, ENABLE_FUNCTIONAL_TESTS=yes)
+AC_SUBST(ENABLE_FUNCTIONAL_TESTS)
+
+# documentation generation switch
+AC_ARG_ENABLE(doc-gen, AS_HELP_STRING([--disable-doc-gen],[disable documentation generation]),
+  ENABLE_DOC_GEN=$enableval, ENABLE_DOC_GEN=$ENABLE_BUILD)
+AC_SUBST(ENABLE_DOC_GEN)
+
+AS_IF(
+  [test "$ENABLE_BUILD" == "no" && test "$ENABLE_DOC_GEN" == "yes"],
+  [AC_MSG_ERROR([Cannot enable generated docs when building overall is disabled. Please do not pass '--enable-doc-gen' or do not pass '--disable-build'.])])
+
+AS_IF(
+  [test "$ENABLE_FUNCTIONAL_TESTS" == "yes" || test "$ENABLE_DOC_GEN" == "yes"],
+  [NEED_PROG(jq, jq)])
+
+AS_IF([test "$ENABLE_BUILD" == "yes"],[
+
+# Look for boost, a required dependency.
+# Note that AX_BOOST_BASE only exports *CPP* BOOST_CPPFLAGS, no CXX flags,
+# and CPPFLAGS are not passed to the C++ compiler automatically.
+# Thus we append the returned CPPFLAGS to the CXXFLAGS here.
+AX_BOOST_BASE([1.66], [CXXFLAGS="$BOOST_CPPFLAGS $CXXFLAGS"], [AC_MSG_ERROR([Nix requires boost.])])
+# For unknown reasons, setting this directly in the ACTION-IF-FOUND above
+# ends up with LDFLAGS being empty, so we set it afterwards.
+LDFLAGS="$BOOST_LDFLAGS $LDFLAGS"
+
+# On some platforms, new-style atomics need a helper library
+AC_MSG_CHECKING(whether -latomic is needed)
+AC_LINK_IFELSE([AC_LANG_SOURCE([[
+#include <stdint.h>
+uint64_t v;
+int main() {
+    return (int)__atomic_load_n(&v, __ATOMIC_ACQUIRE);
+}]])], GCC_ATOMIC_BUILTINS_NEED_LIBATOMIC=no, GCC_ATOMIC_BUILTINS_NEED_LIBATOMIC=yes)
+AC_MSG_RESULT($GCC_ATOMIC_BUILTINS_NEED_LIBATOMIC)
+if test "x$GCC_ATOMIC_BUILTINS_NEED_LIBATOMIC" = xyes; then
+    LDFLAGS="-latomic $LDFLAGS"
+fi
+
+AC_ARG_ENABLE(install-unit-tests, AS_HELP_STRING([--enable-install-unit-tests],[Install the unit tests for running later (default no)]),
+  INSTALL_UNIT_TESTS=$enableval, INSTALL_UNIT_TESTS=no)
+AC_SUBST(INSTALL_UNIT_TESTS)
+
+AC_ARG_WITH(check-bin-dir, AS_HELP_STRING([--with-check-bin-dir=PATH],[path to install unit tests for running later (defaults to $libexecdir/nix)]),
+  checkbindir=$withval, checkbindir=$libexecdir/nix)
+AC_SUBST(checkbindir)
+
+AC_ARG_WITH(check-lib-dir, AS_HELP_STRING([--with-check-lib-dir=PATH],[path to install unit tests for running later (defaults to $libdir)]),
+  checklibdir=$withval, checklibdir=$libdir)
+AC_SUBST(checklibdir)
+
+# LTO is currently broken with clang for unknown reasons; ld segfaults in the llvm plugin
+AC_ARG_ENABLE(lto, AS_HELP_STRING([--enable-lto],[Enable LTO (only supported with GCC) [default=no]]),
+  lto=$enableval, lto=no)
+if test "$lto" = yes; then
+    if $CXX --version | grep -q GCC; then
+        AC_SUBST(CXXLTO, [-flto=jobserver])
+    else
+        echo "error: LTO is only supported with GCC at the moment" >&2
+        exit 1
+    fi
+else
+    AC_SUBST(CXXLTO, [""])
+fi
+
+PKG_PROG_PKG_CONFIG
+
+AC_ARG_ENABLE(shared, AS_HELP_STRING([--enable-shared],[Build shared libraries for Nix [default=yes]]),
+  shared=$enableval, shared=yes)
+if test "$shared" = yes; then
+  AC_SUBST(BUILD_SHARED_LIBS, 1, [Whether to build shared libraries.])
+else
+  AC_SUBST(BUILD_SHARED_LIBS, 0, [Whether to build shared libraries.])
+  PKG_CONFIG="$PKG_CONFIG --static"
+fi
+
+# Look for OpenSSL, a required dependency. FIXME: this is only (maybe)
+# used by S3BinaryCacheStore.
+PKG_CHECK_MODULES([OPENSSL], [libcrypto >= 1.1.1], [CXXFLAGS="$OPENSSL_CFLAGS $CXXFLAGS"])
+
+
+# Look for libarchive.
+PKG_CHECK_MODULES([LIBARCHIVE], [libarchive >= 3.1.2], [CXXFLAGS="$LIBARCHIVE_CFLAGS $CXXFLAGS"])
+# Workaround until https://github.com/libarchive/libarchive/issues/1446 is fixed
+if test "$shared" != yes; then
+    LIBARCHIVE_LIBS+=' -lz'
+fi
+
+# Look for SQLite, a required dependency.
+PKG_CHECK_MODULES([SQLITE3], [sqlite3 >= 3.6.19], [CXXFLAGS="$SQLITE3_CFLAGS $CXXFLAGS"])
+
+# Look for libcurl, a required dependency.
+PKG_CHECK_MODULES([LIBCURL], [libcurl], [CXXFLAGS="$LIBCURL_CFLAGS $CXXFLAGS"])
+
+# Look for editline or readline, a required dependency.
+# The the libeditline.pc file was added only in libeditline >= 1.15.2,
+# see https://github.com/troglobit/editline/commit/0a8f2ef4203c3a4a4726b9dd1336869cd0da8607,
+# Older versions are no longer supported.
+AC_ARG_WITH(
+  [readline-flavor],
+  AS_HELP_STRING([--with-readline-flavor],[Which library to use for nice line editting with the Nix language REPL" [default=editline]]),
+  [readline_flavor=$withval],
+  [readline_flavor=editline])
+AS_CASE(["$readline_flavor"],
+  [editline], [
+    readline_flavor_pc=libeditline
+  ],
+  [readline], [
+    readline_flavor_pc=readline
+    AC_DEFINE([USE_READLINE], [1], [Use readline instead of editline])
+  ],
+  [AC_MSG_ERROR([bad value "$readline_flavor" for --with-readline-flavor, must be one of: editline, readline])])
+PKG_CHECK_MODULES([EDITLINE], [$readline_flavor_pc], [CXXFLAGS="$EDITLINE_CFLAGS $CXXFLAGS"])
+
+# Look for libsodium.
+PKG_CHECK_MODULES([SODIUM], [libsodium], [CXXFLAGS="$SODIUM_CFLAGS $CXXFLAGS"])
+
+# Look for libbrotli{enc,dec}.
+PKG_CHECK_MODULES([LIBBROTLI], [libbrotlienc libbrotlidec], [CXXFLAGS="$LIBBROTLI_CFLAGS $CXXFLAGS"])
+
+# Look for libcpuid.
+have_libcpuid=
+if test "$machine_name" = "x86_64"; then
+    AC_ARG_ENABLE([cpuid],
+                  AS_HELP_STRING([--disable-cpuid], [Do not determine microarchitecture levels with libcpuid (relevant to x86_64 only)]))
+    if test "x$enable_cpuid" != "xno"; then
+      PKG_CHECK_MODULES([LIBCPUID], [libcpuid],
+        [CXXFLAGS="$LIBCPUID_CFLAGS $CXXFLAGS"
+         have_libcpuid=1
+         AC_DEFINE([HAVE_LIBCPUID], [1], [Use libcpuid])]
+      )
+    fi
+fi
+AC_SUBST(HAVE_LIBCPUID, [$have_libcpuid])
+
+
+# Look for libseccomp, required for Linux sandboxing.
+case "$host_os" in
+  linux*)
+    AC_ARG_ENABLE([seccomp-sandboxing],
+                  AS_HELP_STRING([--disable-seccomp-sandboxing],[Don't build support for seccomp sandboxing (only recommended if your arch doesn't support libseccomp yet!)
+                                ]))
+    if test "x$enable_seccomp_sandboxing" != "xno"; then
+      PKG_CHECK_MODULES([LIBSECCOMP], [libseccomp],
+                        [CXXFLAGS="$LIBSECCOMP_CFLAGS $CXXFLAGS" CFLAGS="$LIBSECCOMP_CFLAGS $CFLAGS"])
+      have_seccomp=1
+      AC_DEFINE([HAVE_SECCOMP], [1], [Whether seccomp is available and should be used for sandboxing.])
+      AC_COMPILE_IFELSE([
+        AC_LANG_SOURCE([[
+          #include <seccomp.h>
+          #ifndef __SNR_fchmodat2
+          # error "Missing support for fchmodat2"
+          #endif
+        ]])
+      ], [], [
+        echo "libseccomp is missing __SNR_fchmodat2. Please provide libseccomp 2.5.5 or later"
+        exit 1
+      ])
+    else
+      have_seccomp=
+    fi
+    ;;
+  *)
+    have_seccomp=
+    ;;
+esac
+AC_SUBST(HAVE_SECCOMP, [$have_seccomp])
+
+# Optional dependencies for better normalizing file system data
+AC_CHECK_HEADERS([sys/xattr.h])
+AS_IF([test "$ac_cv_header_sys_xattr_h" = "yes"],[
+  AC_CHECK_FUNCS([llistxattr lremovexattr])
+  AS_IF([test "$ac_cv_func_llistxattr" = "yes" && test "$ac_cv_func_lremovexattr" = "yes"],[
+    AC_DEFINE([HAVE_ACL_SUPPORT], [1], [Define if we can manipulate file system Access Control Lists])
+  ])
+])
+
+# Look for aws-cpp-sdk-s3.
+AC_LANG_PUSH(C++)
+AC_CHECK_HEADERS([aws/s3/S3Client.h],
+  [AC_DEFINE([ENABLE_S3], [1], [Whether to enable S3 support via aws-sdk-cpp.]) enable_s3=1],
+  [AC_DEFINE([ENABLE_S3], [0], [Whether to enable S3 support via aws-sdk-cpp.]) enable_s3=])
+AC_SUBST(ENABLE_S3, [$enable_s3])
+AC_LANG_POP(C++)
+
+
+# Whether to use the Boehm garbage collector.
+AC_ARG_ENABLE(gc, AS_HELP_STRING([--enable-gc],[enable garbage collection in the Nix expression evaluator (requires Boehm GC) [default=yes]]),
+  gc=$enableval, gc=yes)
+if test "$gc" = yes; then
+  PKG_CHECK_MODULES([BDW_GC], [bdw-gc])
+  CXXFLAGS="$BDW_GC_CFLAGS $CXXFLAGS"
+  AC_DEFINE(HAVE_BOEHMGC, 1, [Whether to use the Boehm garbage collector.])
+
+  # See `fixupBoehmStackPointer`, for the integration between Boehm GC
+  # and Boost coroutines.
+  old_CFLAGS="$CFLAGS"
+  # Temporary set `-pthread` just for the next check
+  CFLAGS="$CFLAGS -pthread"
+  AC_CHECK_FUNCS([pthread_attr_get_np pthread_getattr_np])
+  CFLAGS="$old_CFLAGS"
+fi
+
+AS_IF([test "$ENABLE_UNIT_TESTS" == "yes"],[
+
+# Look for gtest.
+PKG_CHECK_MODULES([GTEST], [gtest_main gmock_main])
+
+# Look for rapidcheck.
+PKG_CHECK_MODULES([RAPIDCHECK], [rapidcheck rapidcheck_gtest])
+
+])
+
+# Look for nlohmann/json.
+PKG_CHECK_MODULES([NLOHMANN_JSON], [nlohmann_json >= 3.9])
+
+
+# Look for lowdown library.
+AC_ARG_ENABLE([markdown], AS_HELP_STRING([--enable-markdown], [Enable Markdown rendering in the Nix binary (requires lowdown) [default=auto]]),
+  enable_markdown=$enableval, enable_markdown=auto)
+AS_CASE(["$enable_markdown"],
+  [yes | auto], [
+    PKG_CHECK_MODULES([LOWDOWN], [lowdown >= 0.9.0], [
+      CXXFLAGS="$LOWDOWN_CFLAGS $CXXFLAGS"
+      have_lowdown=1
+      AC_DEFINE(HAVE_LOWDOWN, 1, [Whether lowdown is available and should be used for Markdown rendering.])
+    ], [
+      AS_IF([test "x$enable_markdown" == "xyes"], [AC_MSG_ERROR([--enable-markdown was specified, but lowdown was not found.])])
+    ])
+  ],
+  [no], [have_lowdown=],
+  [AC_MSG_ERROR([bad value "$enable_markdown" for --enable-markdown, must be one of: yes, no, auto])])
+
+
+# Look for libgit2.
+PKG_CHECK_MODULES([LIBGIT2], [libgit2])
+
+
+# Look for toml11, a required dependency.
+AC_LANG_PUSH(C++)
+AC_CHECK_HEADER([toml.hpp], [], [AC_MSG_ERROR([toml11 is not found.])])
+AC_LANG_POP(C++)
+
+# Setuid installations.
+AC_CHECK_FUNCS([setresuid setreuid lchown])
+
+
+# Nice to have, but not essential.
+AC_CHECK_FUNCS([strsignal posix_fallocate sysconf])
+
+
+AC_ARG_WITH(sandbox-shell, AS_HELP_STRING([--with-sandbox-shell=PATH],[path of a statically-linked shell to use as /bin/sh in sandboxes]),
+  sandbox_shell=$withval)
+AC_SUBST(sandbox_shell)
+if test ${cross_compiling:-no} = no && ! test -z ${sandbox_shell+x}; then
+  AC_MSG_CHECKING([whether sandbox-shell has the standalone feature])
+  # busybox shell sometimes allows executing other busybox applets,
+  # even if they are not in the path, breaking our sandbox
+  if PATH= $sandbox_shell -c "busybox" 2>&1 | grep -qv "not found"; then
+    AC_MSG_RESULT(enabled)
+    AC_MSG_ERROR([Please disable busybox FEATURE_SH_STANDALONE])
+  else
+    AC_MSG_RESULT(disabled)
+  fi
+fi
+
+AC_ARG_ENABLE(embedded-sandbox-shell, AS_HELP_STRING([--enable-embedded-sandbox-shell],[include the sandbox shell in the Nix binary [default=no]]),
+  embedded_sandbox_shell=$enableval, embedded_sandbox_shell=no)
+AC_SUBST(embedded_sandbox_shell)
+if test "$embedded_sandbox_shell" = yes; then
+  AC_DEFINE(HAVE_EMBEDDED_SANDBOX_SHELL, 1, [Include the sandbox shell in the Nix binary.])
+fi
+
+])
+
+
+# Expand all variables in config.status.
+test "$prefix" = NONE && prefix=$ac_default_prefix
+test "$exec_prefix" = NONE && exec_prefix='${prefix}'
+for name in $ac_subst_vars; do
+    declare $name="$(eval echo "${!name}")"
+    declare $name="$(eval echo "${!name}")"
+    declare $name="$(eval echo "${!name}")"
+done
+
+rm -f Makefile.config
+
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_FILES([])
+AC_OUTPUT

default.nix

@@ -1,9 +1,10 @@
-(import (
-  let
-    lock = builtins.fromJSON (builtins.readFile ./flake.lock);
-  in
-  fetchTarball {
-    url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
-    sha256 = lock.nodes.flake-compat.locked.narHash;
-  }
-) { src = ./.; }).defaultNix
+(import
+  (
+    let lock = builtins.fromJSON (builtins.readFile ./flake.lock); in
+    fetchTarball {
+      url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
+      sha256 = lock.nodes.flake-compat.locked.narHash;
+    }
+  )
+  { src = ./.; }
+).defaultNix

doc/manual/anchors.jq

@@ -3,7 +3,7 @@
 
 
 def transform_anchors_html:
-    . | gsub($empty_anchor_regex; "<a id=\"" + .anchor + "\"></a>")
+    . | gsub($empty_anchor_regex; "<a name=\"" + .anchor + "\"></a>")
       | gsub($anchor_regex; "<a href=\"#" + .anchor + "\" id=\"" + .anchor + "\">" + .text + "</a>");
 
 
@@ -24,15 +24,8 @@ def map_contents_recursively(transformer):
 def process_command:
     .[0] as $context |
     .[1] as $body |
-    # mdbook 0.5.x uses 'items' instead of 'sections'
-    if $body.items then
-        $body + {
-            items: $body.items | map(map_contents_recursively(if $context.renderer == "html" then transform_anchors_html else transform_anchors_strip end)),
-        }
-    else
-        $body + {
-            sections: $body.sections | map(map_contents_recursively(if $context.renderer == "html" then transform_anchors_html else transform_anchors_strip end)),
-        }
-    end;
+    $body + {
+        sections: $body.sections | map(map_contents_recursively(if $context.renderer == "html" then transform_anchors_html else transform_anchors_strip end)),
+    };
 
 process_command

doc/manual/book.toml

@@ -0,0 +1,33 @@
+[book]
+title = "Nix Reference Manual"
+
+[output.html]
+additional-css = ["custom.css"]
+additional-js = ["redirects.js"]
+edit-url-template = "https://github.com/NixOS/nix/tree/master/doc/manual/{path}"
+git-repository-url = "https://github.com/NixOS/nix"
+
+# Handles replacing @docroot@ with a path to ./src relative to that markdown file,
+# {{#include handlebars}}, and the @generated@ syntax used within these. it mostly
+# but not entirely replaces the links preprocessor (which we cannot simply use due
+# to @generated@ files living in a different directory to make meson happy). we do
+# not want to disable the links preprocessor entirely though because that requires
+# disabling *all* built-in preprocessors and selectively reenabling those we want.
+[preprocessor.substitute]
+command = "python3 ./substitute.py"
+before = ["anchors", "links"]
+
+[preprocessor.anchors]
+renderers = ["html"]
+command = "jq --from-file ./anchors.jq"
+
+[output.markdown]
+
+[output.linkcheck]
+# no Internet during the build (in the sandbox)
+follow-web-links = false
+
+# mdbook-linkcheck does not understand [foo]{#bar} style links, resulting in
+# excessive "Potential incomplete link" warnings. No other kind of warning was
+# produced at the time of writing.
+warning-policy = "ignore"

doc/manual/book.toml.in

@@ -1,26 +0,0 @@
-[book]
-title = "Nix @version@ Reference Manual"
-src = "source"
-
-[output.html]
-additional-css = ["custom.css"]
-additional-js = ["redirects.js"]
-edit-url-template = "https://github.com/NixOS/nix/tree/master/doc/manual/{path}"
-git-repository-url = "https://github.com/NixOS/nix"
-mathjax-support = true
-
-# Handles replacing @docroot@ with a path to ./source relative to that markdown file,
-# {{#include handlebars}}, and the @generated@ syntax used within these. it mostly
-# but not entirely replaces the links preprocessor (which we cannot simply use due
-# to @generated@ files living in a different directory to make meson happy). we do
-# not want to disable the links preprocessor entirely though because that requires
-# disabling *all* built-in preprocessors and selectively reenabling those we want.
-[preprocessor.substitute]
-command = "python3 ./substitute.py"
-before = ["anchors", "links"]
-
-[preprocessor.anchors]
-renderers = ["html"]
-command = "jq --from-file ./anchors.jq"
-
-[output.markdown]

doc/manual/expand-includes.py

@@ -1,223 +0,0 @@
-#!/usr/bin/env python3
-"""
-Standalone markdown preprocessor for manpage generation.
-
-Expands {{#include}} directives and handles @docroot@ references
-without requiring mdbook.
-"""
-
-from pathlib import Path
-import sys
-import argparse
-import re
-
-
-def expand_includes(
-    content: str,
-    current_file: Path,
-    source_root: Path,
-    generated_root: Path | None,
-    visited: set[Path] | None = None,
-) -> str:
-    """
-    Recursively expand {{#include path}} directives.
-
-    Args:
-        content: Markdown content to process
-        current_file: Path to the current file (for resolving relative includes)
-        source_root: Root of the source directory
-        generated_root: Root of generated files (for @generated@/ includes)
-        visited: Set of already-visited files (for cycle detection)
-    """
-    if visited is None:
-        visited = set()
-
-    # Track current file to detect cycles
-    visited.add(current_file.resolve())
-
-    lines = []
-    include_pattern = re.compile(r'^\s*\{\{#include\s+(.+?)\}\}\s*$')
-
-    for line in content.splitlines(keepends=True):
-        match = include_pattern.match(line)
-        if not match:
-            lines.append(line)
-            continue
-
-        # Found an include directive
-        include_path_str = match.group(1).strip()
-
-        # Resolve the include path
-        if include_path_str.startswith("@generated@/"):
-            # Generated file
-            if generated_root is None:
-                raise ValueError(
-                    f"Cannot resolve @generated@ path '{include_path_str}' "
-                    f"without --generated-root"
-                )
-            include_path = generated_root / include_path_str[12:]
-        else:
-            # Relative to current file
-            include_path = (current_file.parent / include_path_str).resolve()
-
-        # Check for cycles
-        if include_path.resolve() in visited:
-            raise RuntimeError(
-                f"Include cycle detected: {include_path} is already being processed"
-            )
-
-        # Check that file exists
-        if not include_path.exists():
-            raise FileNotFoundError(
-                f"Include file not found: {include_path_str}\n"
-                f"  Resolved to: {include_path}\n"
-                f"  From: {current_file}"
-            )
-
-        # Recursively expand the included file
-        included_content = include_path.read_text()
-        expanded = expand_includes(
-            included_content,
-            include_path,
-            source_root,
-            generated_root,
-            visited.copy(),  # Copy visited set for this branch
-        )
-        lines.append(expanded)
-        # Add newline if the included content doesn't end with one
-        if not expanded.endswith('\n'):
-            lines.append('\n')
-
-    return ''.join(lines)
-
-
-def resolve_docroot(content: str, current_file: Path, source_root: Path, docroot_url: str) -> str:
-    """
-    Replace @docroot@ with nix.dev URL and convert .md to .html.
-
-    For manpages, absolute URLs are more useful than relative paths since
-    manpages are viewed standalone. lowdown will display these as proper
-    references in the manpage output.
-    """
-    # Replace @docroot@ with the base URL
-    content = content.replace("@docroot@", docroot_url)
-
-    # Convert .md extensions to .html for web links
-    # Use lookahead to ensure that .md occurs before a fragment or a possible URL end.
-    content = re.sub(
-        r'(https://nix\.dev/[^)\s]*?)\.md(?=[#)\s]|$)',
-        r'\1.html',
-        content
-    )
-
-    return content
-
-
-def resolve_at_escapes(content: str) -> str:
-    """Replace @_at_ with @"""
-    return content.replace("@_at_", "@")
-
-
-def process_file(
-    input_file: Path,
-    source_root: Path,
-    generated_root: Path | None,
-    docroot_url: str,
-) -> str:
-    """Process a single markdown file."""
-    content = input_file.read_text()
-
-    # Expand includes
-    content = expand_includes(content, input_file, source_root, generated_root)
-
-    # Resolve @docroot@ references
-    content = resolve_docroot(content, input_file, source_root, docroot_url)
-
-    # Resolve @_at_ escapes
-    content = resolve_at_escapes(content)
-
-    return content
-
-
-def main():
-    parser = argparse.ArgumentParser(
-        description="Expand markdown includes for manpage generation",
-        formatter_class=argparse.RawDescriptionHelpFormatter,
-        epilog="""
-Examples:
-  # Expand a manpage source file
-  %(prog)s \\
-    --source-root doc/manual/source \\
-    --generated-root build/doc/manual/source \\
-    doc/manual/source/command-ref/nix-store/query.md
-
-  # Pipe to lowdown for manpage generation
-  %(prog)s -s doc/manual/source -g build/doc/manual/source \\
-    doc/manual/source/command-ref/nix-env.md | \\
-    lowdown -sT man -M section=1 -o nix-env.1
-        """,
-    )
-    parser.add_argument(
-        "input_file",
-        type=Path,
-        help="Input markdown file to process",
-    )
-    parser.add_argument(
-        "-s", "--source-root",
-        type=Path,
-        required=True,
-        help="Root directory of markdown sources",
-    )
-    parser.add_argument(
-        "-g", "--generated-root",
-        type=Path,
-        help="Root directory of generated files (for @generated@/ includes)",
-    )
-    parser.add_argument(
-        "-o", "--output",
-        type=Path,
-        help="Output file (default: stdout)",
-    )
-    parser.add_argument(
-        "-u", "--doc-url",
-        type=str,
-        default="https://nix.dev/manual/nix/latest",
-        help="Base URL for documentation links (default: https://nix.dev/manual/nix/latest)",
-    )
-
-    args = parser.parse_args()
-
-    # Validate paths
-    if not args.input_file.exists():
-        print(f"Error: Input file not found: {args.input_file}", file=sys.stderr)
-        return 1
-
-    if not args.source_root.is_dir():
-        print(f"Error: Source root is not a directory: {args.source_root}", file=sys.stderr)
-        return 1
-
-    if args.generated_root and not args.generated_root.is_dir():
-        print(f"Error: Generated root is not a directory: {args.generated_root}", file=sys.stderr)
-        return 1
-
-    try:
-        # Process the file
-        output = process_file(args.input_file, args.source_root, args.generated_root, args.doc_url)
-
-        # Write output
-        if args.output:
-            args.output.write_text(output)
-        else:
-            print(output, end='')
-
-        return 0
-
-    except Exception as e:
-        print(f"Error processing {args.input_file}: {e}", file=sys.stderr)
-        import traceback
-        traceback.print_exc(file=sys.stderr)
-        return 1
-
-
-if __name__ == "__main__":
-    sys.exit(main())

doc/manual/generate-builtins.nix

@@ -5,15 +5,7 @@ in
 
 builtinsInfo:
 let
-  showBuiltin =
-    name:
-    {
-      doc,
-      type ? null,
-      args ? [ ],
-      experimental-feature ? null,
-      impure-only ? false,
-    }:
+  showBuiltin = name: { doc, type ? null, args ? [ ], experimental-feature ? null, impure-only ? false }:
     let
       type' = optionalString (type != null) " (${type})";
 

doc/manual/generate-deps.py

@@ -14,7 +14,7 @@ import sys
 # literally. since the rules for these aren't even the same for
 # all three we will just fail when we encounter any of them (if
 # asserts are off for some reason the depfile will likely point
-# to nonexistent paths, making everything phony and thus fine.)
+# to nonexistant paths, making everything phony and thus fine.)
 for path in glob.glob(sys.argv[1] + '/**', recursive=True):
     assert '\\' not in path
     assert ' ' not in path

doc/manual/generate-manpage.nix

@@ -32,13 +32,7 @@ let
 
   commandInfo = fromJSON commandDump;
 
-  showCommand =
-    {
-      command,
-      details,
-      filename,
-      toplevel,
-    }:
+  showCommand = { command, details, filename, toplevel }:
     let
 
       result = ''
@@ -62,27 +56,26 @@ let
         ${maybeOptions}
       '';
 
-      showSynopsis =
-        command: args:
+      showSynopsis = command: args:
         let
-          showArgument = arg: "*${arg.label}*" + optionalString (!arg ? arity) "...";
+          showArgument = arg: "*${arg.label}*" + optionalString (! arg ? arity) "...";
           arguments = concatStringsSep " " (map showArgument args);
-        in
-        ''
+        in ''
           `${command}` [*option*...] ${arguments}
         '';
 
-      maybeSubcommands = optionalString (details ? commands && details.commands != { }) ''
-        where *subcommand* is one of the following:
+      maybeSubcommands = optionalString (details ? commands && details.commands != {})
+        ''
+          where *subcommand* is one of the following:
 
-        ${subcommands}
-      '';
+          ${subcommands}
+        '';
 
-      subcommands = if length categories > 1 then listCategories else listSubcommands details.commands;
+      subcommands = if length categories > 1
+        then listCategories
+        else listSubcommands details.commands;
 
-      categories = sort (x: y: x.id < y.id) (
-        unique (map (cmd: cmd.category) (attrValues details.commands))
-      );
+      categories = sort (x: y: x.id < y.id) (unique (map (cmd: cmd.category) (attrValues details.commands)));
 
       listCategories = concatStrings (map showCategory categories);
 
@@ -106,39 +99,38 @@ let
 
             ${allStores}
           '';
-          index =
-            replaceStrings
-              [ "@store-types@" "./local-store.md" "./local-daemon-store.md" ]
-              [ storesOverview "#local-store" "#local-daemon-store" ]
-              details.doc;
+          index = replaceStrings
+            [ "@store-types@" "./local-store.md" "./local-daemon-store.md" ]
+            [ storesOverview "#local-store" "#local-daemon-store" ]
+            details.doc;
           storesOverview =
             let
-              showEntry = store: "- [${store.name}](#${store.slug})";
+              showEntry = store:
+                "- [${store.name}](#${store.slug})";
             in
             concatStringsSep "\n" (map showEntry storesList) + "\n";
           allStores = concatStringsSep "\n" (attrValues storePages);
-          storePages = listToAttrs (
-            map (s: {
-              name = s.filename;
-              value = s.page;
-            }) storesList
-          );
+          storePages = listToAttrs
+            (map (s: { name = s.filename; value = s.page; }) storesList);
           storesList = showStoreDocs {
             storeInfo = commandInfo.stores;
             inherit inlineHTML;
           };
-          hasInfix =
-            infix: content:
+          hasInfix = infix: content:
             builtins.stringLength content != builtins.stringLength (replaceStrings [ infix ] [ "" ] content);
         in
         optionalString (details ? doc) (
           # An alternate implementation with builtins.match stack overflowed on some systems.
-          if hasInfix "@store-types@" details.doc then help-stores else details.doc
+          if hasInfix "@store-types@" details.doc
+          then help-stores
+          else details.doc
         );
 
       maybeOptions =
         let
-          allVisibleOptions = filterAttrs (_: o: !o.hiddenCategory) (details.flags // toplevel.flags);
+          allVisibleOptions = filterAttrs
+            (_: o: ! o.hiddenCategory)
+            (details.flags // toplevel.flags);
         in
         optionalString (allVisibleOptions != { }) ''
           # Options
@@ -150,73 +142,55 @@ let
           > See [`man nix.conf`](@docroot@/command-ref/conf-file.md#command-line-flags) for overriding configuration settings with command line flags.
         '';
 
-      showOptions =
-        inlineHTML: allOptions:
+      showOptions = inlineHTML: allOptions:
         let
           showCategory = cat: opts: ''
             ${optionalString (cat != "") "## ${cat}"}
 
             ${concatStringsSep "\n" (attrValues (mapAttrs showOption opts))}
           '';
-          showOption =
-            name: option:
+          showOption = name: option:
             let
               result = trim ''
                 - ${item}
 
                   ${option.description}
               '';
-              item =
-                if inlineHTML then
-                  ''<span id="opt-${name}">[`--${name}`](#opt-${name})</span> ${shortName} ${labels}''
-                else
-                  "`--${name}` ${shortName} ${labels}";
-              shortName = optionalString (option ? shortName) ("/ `-${option.shortName}`");
-              labels = optionalString (option ? labels) (concatStringsSep " " (map (s: "*${s}*") option.labels));
-            in
-            result;
-          categories =
-            mapAttrs
-              # Convert each group from a list of key-value pairs back to an attrset
-              (_: listToAttrs)
-              (groupBy (cmd: cmd.value.category) (attrsToList allOptions));
-        in
-        concatStrings (attrValues (mapAttrs showCategory categories));
-    in
-    squash result;
+              item = if inlineHTML
+                then ''<span id="opt-${name}">[`--${name}`](#opt-${name})</span> ${shortName} ${labels}''
+                else "`--${name}` ${shortName} ${labels}";
+              shortName = optionalString
+                (option ? shortName)
+                ("/ `-${option.shortName}`");
+              labels = optionalString
+                (option ? labels)
+                (concatStringsSep " " (map (s: "*${s}*") option.labels));
+            in result;
+          categories = mapAttrs
+            # Convert each group from a list of key-value pairs back to an attrset
+            (_: listToAttrs)
+            (groupBy
+              (cmd: cmd.value.category)
+              (attrsToList allOptions));
+        in concatStrings (attrValues (mapAttrs showCategory categories));
+    in squash result;
 
   appendName = filename: name: (if filename == "nix" then "nix3" else filename) + "-" + name;
 
-  processCommand =
-    {
-      command,
-      details,
-      filename,
-      toplevel,
-    }:
+  processCommand = { command, details, filename, toplevel }:
     let
       cmd = {
         inherit command;
         name = filename + ".md";
-        value = showCommand {
-          inherit
-            command
-            details
-            filename
-            toplevel
-            ;
-        };
+        value = showCommand { inherit command details filename toplevel; };
       };
-      subcommand =
-        subCmd:
-        processCommand {
-          command = command + " " + subCmd;
-          details = details.commands.${subCmd};
-          filename = appendName filename subCmd;
-          inherit toplevel;
-        };
-    in
-    [ cmd ] ++ concatMap subcommand (attrNames details.commands or { });
+      subcommand = subCmd: processCommand {
+        command = command + " " + subCmd;
+        details = details.commands.${subCmd};
+        filename = appendName filename subCmd;
+        inherit toplevel;
+      };
+    in [ cmd ] ++ concatMap subcommand (attrNames details.commands or {});
 
   manpages = processCommand {
     command = "nix";
@@ -225,11 +199,9 @@ let
     toplevel = commandInfo.args;
   };
 
-  tableOfContents =
-    let
-      showEntry = page: "    - [${page.command}](command-ref/new-cli/${page.name})";
-    in
-    concatStringsSep "\n" (map showEntry manpages) + "\n";
+  tableOfContents = let
+    showEntry = page:
+      "    - [${page.command}](command-ref/new-cli/${page.name})";
+    in concatStringsSep "\n" (map showEntry manpages) + "\n";
 
-in
-(listToAttrs manpages) // { "SUMMARY.md" = tableOfContents; }
+in (listToAttrs manpages) // { "SUMMARY.md" = tableOfContents; }

doc/manual/generate-redirects.py

@@ -1,15 +0,0 @@
-#!/usr/bin/env python3
-"""Generate redirects.js from template and JSON data."""
-
-import sys
-
-template_path, json_path, output_path = sys.argv[1:]
-
-with open(json_path) as f:
-    json_content = f.read().rstrip()
-
-with open(template_path) as f:
-    template = f.read()
-
-with open(output_path, 'w') as f:
-    f.write(template.replace('@REDIRECTS_JSON@', json_content))

doc/manual/generate-settings.nix

@@ -1,99 +1,67 @@
 let
-  inherit (builtins)
-    attrValues
-    concatStringsSep
-    isAttrs
-    isBool
-    mapAttrs
-    ;
-  inherit (import <nix/utils.nix>)
-    concatStrings
-    indent
-    optionalString
-    squash
-    ;
+  inherit (builtins) attrValues concatStringsSep isAttrs isBool mapAttrs;
+  inherit (import <nix/utils.nix>) concatStrings indent optionalString squash;
 in
 
 # `inlineHTML` is a hack to accommodate inconsistent output from `lowdown`
-{
-  prefix,
-  inlineHTML ? true,
-}:
-settingsInfo:
+{ prefix, inlineHTML ? true }: settingsInfo:
 
 let
 
-  showSetting =
-    prefix: setting:
-    {
-      description,
-      documentDefault,
-      defaultValue,
-      aliases,
-      value,
-      experimentalFeature,
-    }:
+  showSetting = prefix: setting: { description, documentDefault, defaultValue, aliases, value, experimentalFeature }:
     let
       result = squash ''
-        - ${item}
+          - ${item}
 
-        ${indent "  " body}
-      '';
-      item =
-        if inlineHTML then
-          ''<span id="${prefix}-${setting}">[`${setting}`](#${prefix}-${setting})</span>''
-        else
-          "`${setting}`";
+          ${indent "  " body}
+        '';
+      item = if inlineHTML
+        then ''<span id="${prefix}-${setting}">[`${setting}`](#${prefix}-${setting})</span>''
+        else "`${setting}`";
       # separate body to cleanly handle indentation
       body = ''
-        ${experimentalFeatureNote}
+          ${experimentalFeatureNote}
 
-        ${description}
+          ${description}
 
-        **Default:** ${showDefault documentDefault defaultValue}
+          **Default:** ${showDefault documentDefault defaultValue}
 
-        ${showAliases aliases}
-      '';
+          ${showAliases aliases}
+        '';
 
       experimentalFeatureNote = optionalString (experimentalFeature != null) ''
-        > **Warning**
-        >
-        > This setting is part of an
-        > [experimental feature](@docroot@/development/experimental-features.md).
-        >
-        > To change this setting, make sure the
-        > [`${experimentalFeature}` experimental feature](@docroot@/development/experimental-features.md#xp-feature-${experimentalFeature})
-        > is enabled.
-        > For example, include the following in [`nix.conf`](@docroot@/command-ref/conf-file.md):
-        >
-        > ```
-        > extra-experimental-features = ${experimentalFeature}
-        > ${setting} = ...
-        > ```
-      '';
+          > **Warning**
+          >
+          > This setting is part of an
+          > [experimental feature](@docroot@/development/experimental-features.md).
+          >
+          > To change this setting, make sure the
+          > [`${experimentalFeature}` experimental feature](@docroot@/development/experimental-features.md#xp-feature-${experimentalFeature})
+          > is enabled.
+          > For example, include the following in [`nix.conf`](@docroot@/command-ref/conf-file.md):
+          >
+          > ```
+          > extra-experimental-features = ${experimentalFeature}
+          > ${setting} = ...
+          > ```
+        '';
 
-      showDefault =
-        documentDefault: defaultValue:
+      showDefault = documentDefault: defaultValue:
         if documentDefault then
           # a StringMap value type is specified as a string, but
           # this shows the value type. The empty stringmap is `null` in
           # JSON, but that converts to `{ }` here.
-          if defaultValue == "" || defaultValue == [ ] || isAttrs defaultValue then
-            "*empty*"
-          else if isBool defaultValue then
-            if defaultValue then "`true`" else "`false`"
-          else
-            "`${toString defaultValue}`"
-        else
-          "*machine-specific*";
+          if defaultValue == "" || defaultValue == [] || isAttrs defaultValue
+            then "*empty*"
+            else if isBool defaultValue then
+              if defaultValue then "`true`" else "`false`"
+            else "`${toString defaultValue}`"
+        else "*machine-specific*";
 
-      showAliases =
-        aliases:
-        optionalString (aliases != [ ])
-          "**Deprecated alias:** ${(concatStringsSep ", " (map (s: "`${s}`") aliases))}";
+      showAliases = aliases:
+          optionalString (aliases != [])
+            "**Deprecated alias:** ${(concatStringsSep ", " (map (s: "`${s}`") aliases))}";
 
-    in
-    result;
+    in result;
 
-in
-concatStrings (attrValues (mapAttrs (showSetting prefix) settingsInfo))
+in concatStrings (attrValues (mapAttrs (showSetting prefix) settingsInfo))

doc/manual/generate-store-info.nix

@@ -1,20 +1,6 @@
 let
-  inherit (builtins)
-    attrNames
-    listToAttrs
-    concatStringsSep
-    readFile
-    replaceStrings
-    ;
-  inherit (import <nix/utils.nix>)
-    optionalString
-    filterAttrs
-    trim
-    squash
-    toLower
-    unique
-    indent
-    ;
+  inherit (builtins) attrNames listToAttrs concatStringsSep readFile replaceStrings;
+  inherit (import <nix/utils.nix>) optionalString filterAttrs trim squash toLower unique indent;
   showSettings = import <nix/generate-settings.nix>;
 in
 
@@ -28,14 +14,7 @@ in
 
 let
 
-  showStore =
-    { name, slug }:
-    {
-      settings,
-      doc,
-      uri-schemes,
-      experimentalFeature,
-    }:
+  showStore = { name, slug }: { settings, doc, experimentalFeature }:
     let
       result = squash ''
         # ${name}
@@ -46,10 +25,7 @@ let
 
         ## Settings
 
-        ${showSettings {
-          prefix = "store-${slug}";
-          inherit inlineHTML;
-        } settings}
+        ${showSettings { prefix = "store-${slug}"; inherit inlineHTML; } settings}
       '';
 
       experimentalFeatureNote = optionalString (experimentalFeature != null) ''
@@ -67,15 +43,15 @@ let
         > extra-experimental-features = ${experimentalFeature}
         > ```
       '';
-    in
-    result;
+    in result;
 
-  storesList = map (name: rec {
-    inherit name;
-    slug = replaceStrings [ " " ] [ "-" ] (toLower name);
-    filename = "${slug}.md";
-    page = showStore { inherit name slug; } storeInfo.${name};
-  }) (attrNames storeInfo);
+  storesList = map
+    (name: rec {
+      inherit name;
+      slug = replaceStrings [ " " ] [ "-" ] (toLower name);
+      filename = "${slug}.md";
+      page = showStore { inherit name slug; } storeInfo.${name};
+    })
+    (attrNames storeInfo);
 
-in
-storesList
+in storesList

doc/manual/generate-store-types.nix

@@ -1,11 +1,5 @@
 let
-  inherit (builtins)
-    attrNames
-    listToAttrs
-    concatStringsSep
-    readFile
-    replaceStrings
-    ;
+  inherit (builtins) attrNames listToAttrs concatStringsSep readFile replaceStrings;
   showSettings = import <nix/generate-settings.nix>;
   showStoreDocs = import <nix/generate-store-info.nix>;
 in
@@ -20,28 +14,26 @@ let
 
   index =
     let
-      showEntry = store: "- [${store.name}](./${store.filename})";
+      showEntry = store:
+        "- [${store.name}](./${store.filename})";
     in
     concatStringsSep "\n" (map showEntry storesList);
 
-  "index.md" = replaceStrings [ "@store-types@" ] [ index ] (
-    readFile ./source/store/types/index.md.in
-  );
+  "index.md" = replaceStrings
+    [ "@store-types@" ] [ index ]
+    (readFile ./src/store/types/index.md.in);
 
   tableOfContents =
     let
-      showEntry = store: "    - [${store.name}](store/types/${store.filename})";
+      showEntry = store:
+        "    - [${store.name}](store/types/${store.filename})";
     in
     concatStringsSep "\n" (map showEntry storesList) + "\n";
 
   "SUMMARY.md" = tableOfContents;
 
-  storePages = listToAttrs (
-    map (s: {
-      name = s.filename;
-      value = s.page;
-    }) storesList
-  );
+  storePages = listToAttrs
+    (map (s: { name = s.filename; value = s.page; }) storesList);
 
 in
 storePages // { inherit "index.md" "SUMMARY.md"; }

doc/manual/generate-xp-features-shortlist.nix

@@ -2,8 +2,8 @@ with builtins;
 with import <nix/utils.nix>;
 
 let
-  showExperimentalFeature = name: doc: ''
-    - [`${name}`](@docroot@/development/experimental-features.md#xp-feature-${name})
-  '';
-in
-xps: indent "  " (concatStrings (attrValues (mapAttrs showExperimentalFeature xps)))
+  showExperimentalFeature = name: doc:
+    ''
+      - [`${name}`](@docroot@/development/experimental-features.md#xp-feature-${name})
+    '';
+in xps: indent "  " (concatStrings (attrValues (mapAttrs showExperimentalFeature xps)))

doc/manual/generate-xp-features.nix

@@ -2,8 +2,7 @@ with builtins;
 with import <nix/utils.nix>;
 
 let
-  showExperimentalFeature =
-    name: doc:
+  showExperimentalFeature = name: doc:
     squash ''
       ## [`${name}`]{#xp-feature-${name}}
 

doc/manual/local.mk

@@ -0,0 +1,236 @@
+# The version of Nix used to generate the doc. Can also be
+# `$(nix_INSTALL_PATH)` or just `nix` (to grap ambient from the `PATH`),
+# if one prefers.
+doc_nix = $(nix_PATH)
+
+MANUAL_SRCS := \
+	$(call rwildcard, $(d)/src, *.md) \
+	$(call rwildcard, $(d)/src, */*.md)
+
+man-pages := $(foreach n, \
+	nix-env.1 nix-store.1 \
+	nix-build.1 nix-shell.1 nix-instantiate.1 \
+	nix-collect-garbage.1 \
+	nix-prefetch-url.1 nix-channel.1 \
+	nix-hash.1 nix-copy-closure.1 \
+	nix.conf.5 nix-daemon.8 \
+	nix-profiles.5 \
+, $(d)/$(n))
+
+# man pages for subcommands
+# convert from `$(d)/src/command-ref/nix-{1}/{2}.md` to `$(d)/nix-{1}-{2}.1`
+# FIXME: unify with how nix3-cli man pages are generated
+man-pages += $(foreach subcommand, \
+	$(filter-out %opt-common.md %env-common.md, $(wildcard $(d)/src/command-ref/nix-*/*.md)), \
+	$(d)/$(subst /,-,$(subst $(d)/src/command-ref/,,$(subst .md,.1,$(subcommand)))))
+
+clean-files += $(d)/*.1 $(d)/*.5 $(d)/*.8
+
+# Provide a dummy environment for nix, so that it will not access files outside the macOS sandbox.
+# Set cores to 0 because otherwise `nix config show` resolves the cores based on the current machine
+dummy-env = env -i \
+	HOME=/dummy \
+	NIX_CONF_DIR=/dummy \
+	NIX_SSL_CERT_FILE=/dummy/no-ca-bundle.crt \
+	NIX_STATE_DIR=/dummy \
+	NIX_CONFIG='cores = 0'
+
+nix-eval = $(dummy-env) $(doc_nix) eval --experimental-features nix-command -I nix=doc/manual --store dummy:// --impure --raw
+
+# re-implement mdBook's include directive to make it usable for terminal output and for proper @docroot@ substitution
+define process-includes
+	while read -r line; do \
+		set -euo pipefail; \
+		filename="$$(dirname $(1))/$$(sed 's/{{#include \(.*\)}}/\1/'<<< $$line)"; \
+		test -f "$$filename" || ( echo "#include-d file '$$filename' does not exist." >&2; exit 1; ); \
+		matchline="$$(sed 's|/|\\/|g' <<< $$line)"; \
+		sed -i "/$$matchline/r $$filename" $(2); \
+		sed -i "s/$$matchline//" $(2); \
+	done < <(grep '{{#include' $(1))
+endef
+
+$(d)/nix-env-%.1: $(d)/src/command-ref/nix-env/%.md
+	@printf "Title: %s\n\n" "$(subst nix-env-,nix-env --,$$(basename "$@" .1))" > $^.tmp
+	$(render-subcommand)
+
+$(d)/nix-store-%.1: $(d)/src/command-ref/nix-store/%.md
+	@printf -- 'Title: %s\n\n' "$(subst nix-store-,nix-store --,$$(basename "$@" .1))" > $^.tmp
+	$(render-subcommand)
+
+# FIXME: there surely is some more deduplication to be achieved here with even darker Make magic
+define render-subcommand
+  @cat $^ >> $^.tmp
+	@$(call process-includes,$^,$^.tmp)
+	$(trace-gen) lowdown -sT man --nroff-nolinks -M section=1 $^.tmp -o $@
+	@# fix up `lowdown`'s automatic escaping of `--`
+	@# https://github.com/kristapsdz/lowdown/blob/edca6ce6d5336efb147321a43c47a698de41bb7c/entity.c#L202
+	@sed -i 's/\e\[u2013\]/--/' $@
+	@rm $^.tmp
+endef
+
+
+$(d)/%.1: $(d)/src/command-ref/%.md
+	@printf "Title: %s\n\n" "$$(basename $@ .1)" > $^.tmp
+	@cat $^ >> $^.tmp
+	@$(call process-includes,$^,$^.tmp)
+	$(trace-gen) lowdown -sT man --nroff-nolinks -M section=1 $^.tmp -o $@
+	@rm $^.tmp
+
+$(d)/%.8: $(d)/src/command-ref/%.md
+	@printf "Title: %s\n\n" "$$(basename $@ .8)" > $^.tmp
+	@cat $^ >> $^.tmp
+	$(trace-gen) lowdown -sT man --nroff-nolinks -M section=8 $^.tmp -o $@
+	@rm $^.tmp
+
+$(d)/nix.conf.5: $(d)/src/command-ref/conf-file.md
+	@printf "Title: %s\n\n" "$$(basename $@ .5)" > $^.tmp
+	@cat $^ >> $^.tmp
+	@$(call process-includes,$^,$^.tmp)
+	$(trace-gen) lowdown -sT man --nroff-nolinks -M section=5 $^.tmp -o $@
+	@rm $^.tmp
+
+$(d)/nix-profiles.5: $(d)/src/command-ref/files/profiles.md
+	@printf "Title: %s\n\n" "$$(basename $@ .5)" > $^.tmp
+	@cat $^ >> $^.tmp
+	$(trace-gen) lowdown -sT man --nroff-nolinks -M section=5 $^.tmp -o $@
+	@rm $^.tmp
+
+$(d)/src/SUMMARY.md: $(d)/src/SUMMARY.md.in $(d)/src/SUMMARY-rl-next.md $(d)/src/store/types $(d)/src/command-ref/new-cli $(d)/src/development/experimental-feature-descriptions.md
+	@cp $< $@
+	@$(call process-includes,$@,$@)
+
+$(d)/src/store/types: $(d)/nix.json $(d)/utils.nix $(d)/generate-store-info.nix  $(d)/generate-store-types.nix $(d)/src/store/types/index.md.in $(doc_nix)
+	@# FIXME: build out of tree!
+	@rm -rf $@.tmp
+	$(trace-gen) $(nix-eval) --write-to $@.tmp --expr 'import doc/manual/generate-store-types.nix (builtins.fromJSON (builtins.readFile $<)).stores'
+	@# do not destroy existing contents
+	@mv $@.tmp/* $@/
+
+$(d)/src/command-ref/new-cli: $(d)/nix.json $(d)/utils.nix $(d)/generate-manpage.nix $(d)/generate-settings.nix $(d)/generate-store-info.nix $(doc_nix)
+	@rm -rf $@ $@.tmp
+	$(trace-gen) $(nix-eval) --write-to $@.tmp --expr 'import doc/manual/generate-manpage.nix true (builtins.readFile $<)'
+	@mv $@.tmp $@
+
+$(d)/src/command-ref/conf-file.md: $(d)/conf-file.json $(d)/utils.nix $(d)/generate-settings.nix $(d)/src/command-ref/conf-file-prefix.md $(d)/src/command-ref/experimental-features-shortlist.md $(doc_nix)
+	@cat doc/manual/src/command-ref/conf-file-prefix.md > $@.tmp
+	$(trace-gen) $(nix-eval) --expr 'import doc/manual/generate-settings.nix { prefix = "conf"; } (builtins.fromJSON (builtins.readFile $<))' >> $@.tmp;
+	@mv $@.tmp $@
+
+$(d)/nix.json: $(doc_nix)
+	$(trace-gen) $(dummy-env) $(doc_nix) __dump-cli > $@.tmp
+	@mv $@.tmp $@
+
+$(d)/conf-file.json: $(doc_nix)
+	$(trace-gen) $(dummy-env) $(doc_nix) config show --json --experimental-features nix-command > $@.tmp
+	@mv $@.tmp $@
+
+$(d)/src/development/experimental-feature-descriptions.md: $(d)/xp-features.json $(d)/utils.nix $(d)/generate-xp-features.nix $(doc_nix)
+	@rm -rf $@ $@.tmp
+	$(trace-gen) $(nix-eval) --write-to $@.tmp --expr 'import doc/manual/generate-xp-features.nix (builtins.fromJSON (builtins.readFile $<))'
+	@mv $@.tmp $@
+
+$(d)/src/command-ref/experimental-features-shortlist.md: $(d)/xp-features.json $(d)/utils.nix $(d)/generate-xp-features-shortlist.nix $(doc_nix)
+	@rm -rf $@ $@.tmp
+	$(trace-gen) $(nix-eval) --write-to $@.tmp --expr 'import doc/manual/generate-xp-features-shortlist.nix (builtins.fromJSON (builtins.readFile $<))'
+	@mv $@.tmp $@
+
+$(d)/xp-features.json: $(doc_nix)
+	$(trace-gen) $(dummy-env) $(doc_nix) __dump-xp-features > $@.tmp
+	@mv $@.tmp $@
+
+$(d)/src/language/builtins.md: $(d)/language.json $(d)/generate-builtins.nix $(d)/src/language/builtins-prefix.md $(doc_nix)
+	@cat doc/manual/src/language/builtins-prefix.md > $@.tmp
+	$(trace-gen) $(nix-eval) --expr 'import doc/manual/generate-builtins.nix (builtins.fromJSON (builtins.readFile $<))' >> $@.tmp;
+	@cat doc/manual/src/language/builtins-suffix.md >> $@.tmp
+	@mv $@.tmp $@
+
+$(d)/language.json: $(doc_nix)
+	$(trace-gen) $(dummy-env) $(doc_nix) __dump-language > $@.tmp
+	@mv $@.tmp $@
+
+# Generate "Upcoming release" notes (or clear it and remove from menu)
+$(d)/src/release-notes/rl-next.md: $(d)/rl-next $(d)/rl-next/*
+	@if type -p changelog-d > /dev/null; then \
+		echo "  GEN   " $@; \
+		changelog-d doc/manual/rl-next > $@; \
+	else \
+		echo "  NULL  " $@; \
+		true > $@; \
+	fi
+
+$(d)/src/SUMMARY-rl-next.md: $(d)/src/release-notes/rl-next.md
+	$(trace-gen) true
+	@if [ -s $< ]; then \
+		echo '  - [Upcoming release](release-notes/rl-next.md)' > $@; \
+	else \
+	  true > $@; \
+	fi
+
+# Generate the HTML manual.
+.PHONY: manual-html
+manual-html: $(docdir)/manual/index.html
+
+# Open the built HTML manual in the default browser.
+manual-html-open: $(docdir)/manual/index.html
+	@echo "  OPEN  " $<; \
+	  xdg-open $< \
+		  || open $< \
+			|| { \
+		echo "Could not open the manual in a browser. Please open '$<'" >&2; \
+		false; \
+		}
+install: $(docdir)/manual/index.html
+
+# Generate 'nix' manpages.
+.PHONY: manpages
+manpages: $(mandir)/man1/nix3-manpages
+install: $(mandir)/man1/nix3-manpages
+man: doc/manual/generated/man1/nix3-manpages
+all: doc/manual/generated/man1/nix3-manpages
+
+# FIXME: unify with how the other man pages are generated.
+# this one works differently and does not use any of the amenities provided by `/mk/lib.mk`.
+$(mandir)/man1/nix3-manpages: doc/manual/generated/man1/nix3-manpages
+	@mkdir -p $(DESTDIR)$$(dirname $@)
+	$(trace-install) install -m 0644 $$(dirname $<)/* $(DESTDIR)$$(dirname $@)
+
+doc/manual/generated/man1/nix3-manpages: $(d)/src/command-ref/new-cli
+	@mkdir -p $(DESTDIR)$$(dirname $@)
+	$(trace-gen) for i in doc/manual/src/command-ref/new-cli/*.md; do \
+		name=$$(basename $$i .md); \
+		tmpFile=$$(mktemp); \
+		if [[ $$name = SUMMARY ]]; then continue; fi; \
+		printf "Title: %s\n\n" "$$name" > $$tmpFile; \
+		cat $$i >> $$tmpFile; \
+		lowdown -sT man --nroff-nolinks -M section=1 $$tmpFile -o $(DESTDIR)$$(dirname $@)/$$name.1; \
+		rm $$tmpFile; \
+	done
+	@touch $@
+
+# the `! -name 'documentation.md'` filter excludes the one place where
+# `@docroot@` is to be preserved for documenting the mechanism
+# FIXME: maybe contributing guides should live right next to the code
+# instead of in the manual
+$(docdir)/manual/index.html: $(MANUAL_SRCS) $(d)/book.toml $(d)/anchors.jq $(d)/custom.css $(d)/src/SUMMARY.md $(d)/src/store/types $(d)/src/command-ref/new-cli $(d)/src/development/experimental-feature-descriptions.md $(d)/src/command-ref/conf-file.md $(d)/src/language/builtins.md $(d)/src/release-notes/rl-next.md $(d)/src/figures $(d)/src/favicon.png $(d)/src/favicon.svg
+	$(trace-gen) \
+		tmp="$$(mktemp -d)"; \
+		cp -r doc/manual "$$tmp"; \
+		find "$$tmp" -name '*.md' | while read -r file; do \
+			$(call process-includes,$$file,$$file); \
+		done; \
+		find "$$tmp" -name '*.md' ! -name 'documentation.md' | while read -r file; do \
+			docroot="$$(realpath --relative-to="$$(dirname "$$file")" $$tmp/manual/src)"; \
+			sed -i "s,@docroot@,$$docroot,g" "$$file"; \
+		done; \
+		set -euo pipefail; \
+		( \
+		    cd "$$tmp/manual"; \
+		    RUST_LOG=warn \
+		        MDBOOK_SUBSTITUTE_SEARCH=$(d)/src \
+		        mdbook build -d $(DESTDIR)$(docdir)/manual.tmp 2>&1 \
+			    | { grep -Fv "because fragment resolution isn't implemented" || :; } \
+		); \
+		rm -rf "$$tmp/manual"
+	@rm -rf $(DESTDIR)$(docdir)/manual
+	@mv $(DESTDIR)$(docdir)/manual.tmp/html $(DESTDIR)$(docdir)/manual
+	@rm -rf $(DESTDIR)$(docdir)/manual.tmp

doc/manual/meson.build

@@ -1,70 +1,50 @@
-project(
-  'nix-manual',
+project('nix-manual',
   version : files('.version'),
   meson_version : '>= 1.1',
   license : 'LGPL-2.1-or-later',
 )
 
-# Compute documentation URL based on version and release type
-version = meson.project_version()
-official_release = get_option('official-release')
-
-if official_release
-  # For official releases, use versioned URL (dropping patch version)
-  version_parts = version.split('.')
-  major_minor = '@0@.@1@'.format(version_parts[0], version_parts[1])
-  doc_url = 'https://nix.dev/manual/nix/@0@'.format(major_minor)
-else
-  # For development builds, use /latest
-  doc_url = 'https://nix.dev/manual/nix/latest'
-endif
-
 nix = find_program('nix', native : true)
 
+mdbook = find_program('mdbook', native : true)
 bash = find_program('bash', native : true)
 
-# HTML manual dependencies (conditional)
-if get_option('html-manual')
-  mdbook = find_program('mdbook', native : true)
-endif
-
 pymod = import('python')
 python = pymod.find_installation('python3')
 
 nix_env_for_docs = {
-  'HOME' : '/dummy',
-  'NIX_CONF_DIR' : '/dummy',
-  'NIX_SSL_CERT_FILE' : '/dummy/no-ca-bundle.crt',
-  'NIX_STATE_DIR' : '/dummy',
-  'NIX_CONFIG' : 'cores = 0',
+  'HOME': '/dummy',
+  'NIX_CONF_DIR': '/dummy',
+  'NIX_SSL_CERT_FILE': '/dummy/no-ca-bundle.crt',
+  'NIX_STATE_DIR': '/dummy',
+  'NIX_CONFIG': 'cores = 0',
 }
 
-nix_for_docs = [ nix, '--experimental-features', 'nix-command' ]
+nix_for_docs = [nix, '--experimental-features', 'nix-command']
 nix_eval_for_docs_common = nix_for_docs + [
   'eval',
-  '-I',
-  'nix=' + meson.current_source_dir(),
+  '-I', 'nix=' + meson.current_source_dir(),
   '--store', 'dummy://',
   '--impure',
 ]
 nix_eval_for_docs = nix_eval_for_docs_common + '--raw'
 
 conf_file_json = custom_target(
-  command : nix_for_docs + [ 'config', 'show', '--json' ],
+  command : nix_for_docs + ['config', 'show', '--json'],
   capture : true,
   output : 'conf-file.json',
   env : nix_env_for_docs,
 )
 
 language_json = custom_target(
-  command : [ nix, '__dump-language' ],
+  command: [nix, '__dump-language'],
   output : 'language.json',
   capture : true,
   env : nix_env_for_docs,
 )
 
 nix3_cli_json = custom_target(
-  command : [ nix, '__dump-cli' ],
+  command : [nix, '__dump-cli'],
   capture : true,
   output : 'nix.json',
   env : nix_env_for_docs,
@@ -74,117 +54,82 @@ generate_manual_deps = files(
   'generate-deps.py',
 )
 
-# Generate redirects.js from template and JSON data
-redirects_js = custom_target(
-  'redirects.js',
-  command : [
-    python,
-    '@INPUT0@',
-    '@INPUT1@',
-    '@INPUT2@',
-    '@OUTPUT@',
-  ],
-  input : [
-    'generate-redirects.py',
-    'redirects.js.in',
-    'redirects.json',
-  ],
-  output : 'redirects.js',
-)
-
 # Generates types
-subdir('source/store')
+subdir('src/store')
 # Generates builtins.md and builtin-constants.md.
-subdir('source/language')
+subdir('src/language')
 # Generates new-cli pages, experimental-features-shortlist.md, and conf-file.md.
-subdir('source/command-ref')
+subdir('src/command-ref')
 # Generates experimental-feature-descriptions.md.
-subdir('source/development')
+subdir('src/development')
 # Generates rl-next-generated.md.
-subdir('source/release-notes')
-subdir('source')
+subdir('src/release-notes')
+subdir('src')
 
 # Hacky way to figure out if `nix` is an `ExternalProgram` or
-# `Executable`. Only the latter can occur in custom target input lists.
+# `Exectuable`. Only the latter can occur in custom target input lists.
 if nix.full_path().startswith(meson.build_root())
   nix_input = nix
 else
   nix_input = []
 endif
 
-# HTML manual build (conditional)
-if get_option('html-manual')
-  manual = custom_target(
+manual = custom_target(
+  'manual',
+  command : [
+    bash,
+    '-euo', 'pipefail',
+    '-c',
+    '''
+        @0@ @INPUT0@ @CURRENT_SOURCE_DIR@ > @DEPFILE@
+        @0@ @INPUT1@ summary @2@ < @CURRENT_SOURCE_DIR@/src/SUMMARY.md.in > @2@/src/SUMMARY.md
+        rsync -r --include='*.md' @CURRENT_SOURCE_DIR@/ @2@/
+        (cd @2@; RUST_LOG=warn @1@ build -d @2@ 3>&2 2>&1 1>&3) | { grep -Fv "because fragment resolution isn't implemented" || :; } 3>&2 2>&1 1>&3
+        rm -rf @2@/manual
+        mv @2@/html @2@/manual
+        find @2@/manual -iname meson.build -delete
+    '''.format(
+      python.full_path(),
+      mdbook.full_path(),
+      meson.current_build_dir(),
+    ),
+  ],
+  input : [
+    generate_manual_deps,
+    'substitute.py',
+    'book.toml',
+    'anchors.jq',
+    'custom.css',
+    nix3_cli_files,
+    experimental_features_shortlist_md,
+    experimental_feature_descriptions_md,
+    types_dir,
+    conf_file_md,
+    builtins_md,
+    rl_next_generated,
+    summary_rl_next,
+    nix_input,
+  ],
+  output : [
     'manual',
-    command : [
-      bash,
-      '-euo',
-      'pipefail',
-      '-c',
-      '''
-          @0@ @INPUT0@ @CURRENT_SOURCE_DIR@ > @DEPFILE@
-          @0@ @INPUT1@ summary @2@ < @CURRENT_SOURCE_DIR@/source/SUMMARY.md.in > @2@/source/SUMMARY.md
-          sed -e 's|@version@|@3@|g' < @INPUT2@ > @2@/book.toml
-          # Copy source to build directory, excluding the build directory itself
-          # (which is present when built as an individual component).
-          # Use tar with --dereference to copy symlink targets (e.g., JSON examples from tests).
-          (cd @CURRENT_SOURCE_DIR@ && find . -mindepth 1 -maxdepth 1 ! -name build | tar -c --dereference -T - -f -) | (cd @2@ && tar -xf -)
-          chmod -R u+w @2@
-          find @2@ -name '*.drv' -delete
-          (cd @2@; RUST_LOG=warn @1@ build -d @2@ 3>&2 2>&1 1>&3) | { grep -Fv "because fragment resolution isn't implemented" || :; } 3>&2 2>&1 1>&3
-          rm -rf @2@/manual
-          mv @2@/html @2@/manual
-          # Remove Mathjax 2.7, because we will actually use MathJax 3.x
-          find @2@/manual | grep .html | xargs sed -i -e '/2.7.1.MathJax.js/d'
-          find @2@/manual -iname meson.build -delete
-      '''.format(
-        python.full_path(),
-        mdbook.full_path(),
-        meson.current_build_dir(),
-        meson.project_version(),
-      ),
-    ],
-    input : [
-      generate_manual_deps,
-      'substitute.py',
-      'book.toml.in',
-      'anchors.jq',
-      'custom.css',
-      redirects_js,
-      nix3_cli_files,
-      experimental_features_shortlist_md,
-      experimental_feature_descriptions_md,
-      types_dir,
-      conf_file_md,
-      builtins_md,
-      rl_next_generated,
-      summary_rl_next,
-      json_schema_generated_files,
-      nix_input,
-    ],
-    output : [
-      'manual',
-      'markdown',
-    ],
-    depfile : 'manual.d',
-    build_by_default : true,
-    env : {
-      'RUST_LOG' : 'info',
-      'MDBOOK_SUBSTITUTE_SEARCH' : meson.current_build_dir() / 'source',
-    },
-  )
-  manual_html = manual[0]
-  manual_md = manual[1]
+    'markdown',
+  ],
+  depfile : 'manual.d',
+  env : {
+    'RUST_LOG': 'info',
+    'MDBOOK_SUBSTITUTE_SEARCH': meson.current_build_dir() / 'src',
+  },
+)
+manual_html = manual[0]
+manual_md = manual[1]
 
-  install_subdir(
-    manual_html.full_path(),
-    install_dir : get_option('datadir') / 'doc/nix',
-  )
-endif
+install_subdir(
+  manual_html.full_path(),
+  install_dir : get_option('datadir') / 'doc/nix',
+)
 
 nix_nested_manpages = [
-  [
-    'nix-env',
+  [ 'nix-env',
     [
       'delete-generations',
       'install',
@@ -199,8 +144,7 @@ nix_nested_manpages = [
       'upgrade',
     ],
   ],
-  [
-    'nix-store',
+  [ 'nix-store',
     [
       'add-fixed',
       'add',
@@ -226,7 +170,6 @@ nix_nested_manpages = [
   ],
 ]
 
-# Manpage generation (standalone, no mdbook dependency)
 foreach command : nix_nested_manpages
   foreach page : command[1]
     title = command[0] + ' --' + page
@@ -234,19 +177,15 @@ foreach command : nix_nested_manpages
     custom_target(
       command : [
         bash,
-        '@INPUT0@',
+        files('./render-manpage.sh'),
         '--out-no-smarty',
         title,
         section,
-        meson.current_source_dir() / 'source',
-        meson.current_build_dir() / 'source',
-        doc_url,
-        meson.current_source_dir() / 'source/command-ref' / command[0] / (page + '.md'),
+        '@INPUT0@/command-ref' / command[0] / (page + '.md'),
         '@OUTPUT0@',
       ],
       input : [
-        files('./render-manpage.sh'),
-        files('./expand-includes.py'),
+        manual_md,
         nix_input,
       ],
       output : command[0] + '-' + page + '.1',
@@ -260,7 +199,6 @@ nix3_manpages = [
   'nix3-build',
   'nix3-bundle',
   'nix3-config',
-  'nix3-config-check',
   'nix3-config-show',
   'nix3-copy',
   'nix3-daemon',
@@ -268,8 +206,8 @@ nix3_manpages = [
   'nix3-derivation',
   'nix3-derivation-show',
   'nix3-develop',
+  #'nix3-doctor',
   'nix3-edit',
-  'nix3-env-shell',
   'nix3-eval',
   'nix3-flake-archive',
   'nix3-flake-check',
@@ -286,7 +224,6 @@ nix3_manpages = [
   'nix3-fmt',
   'nix3-hash-file',
   'nix3-hash',
-  'nix3-hash-convert',
   'nix3-hash-path',
   'nix3-hash-to-base16',
   'nix3-hash-to-base32',
@@ -301,15 +238,14 @@ nix3_manpages = [
   'nix3-nar-cat',
   'nix3-nar-dump-path',
   'nix3-nar-ls',
-  'nix3-nar-pack',
   'nix3-nar',
   'nix3-path-info',
   'nix3-print-dev-env',
-  'nix3-profile',
-  'nix3-profile-add',
   'nix3-profile-diff-closures',
   'nix3-profile-history',
+  'nix3-profile-install',
   'nix3-profile-list',
+  'nix3-profile',
   'nix3-profile-remove',
   'nix3-profile-rollback',
   'nix3-profile-upgrade',
@@ -324,7 +260,7 @@ nix3_manpages = [
   'nix3-repl',
   'nix3-run',
   'nix3-search',
-  'nix3-store-add',
+  #'nix3-shell',
   'nix3-store-add-file',
   'nix3-store-add-path',
   'nix3-store-cat',
@@ -334,12 +270,12 @@ nix3_manpages = [
   'nix3-store-diff-closures',
   'nix3-store-dump-path',
   'nix3-store-gc',
-  'nix3-store-info',
   'nix3-store-ls',
   'nix3-store-make-content-addressed',
   'nix3-store',
   'nix3-store-optimise',
   'nix3-store-path-from-hash-part',
+  'nix3-store-ping',
   'nix3-store-prefetch-file',
   'nix3-store-repair',
   'nix3-store-sign',
@@ -355,21 +291,14 @@ foreach page : nix3_manpages
     command : [
       bash,
       '@INPUT0@',
-      # Note: no --out-no-smarty flag (original behavior)
       page,
       section,
-      meson.current_source_dir() / 'source',
-      meson.current_build_dir() / 'source',
-      doc_url,
-      meson.current_build_dir() / 'source/command-ref/new-cli/@0@.md'.format(
-        page,
-      ),
+      '@INPUT1@/command-ref/new-cli/@0@.md'.format(page),
       '@OUTPUT@',
     ],
     input : [
       files('./render-manpage.sh'),
-      files('./expand-includes.py'),
-      nix3_cli_files,
+      manual_md,
       nix_input,
     ],
     output : page + '.1',
@@ -389,12 +318,7 @@ nix_manpages = [
   [ 'nix-channel', 1 ],
   [ 'nix-hash', 1 ],
   [ 'nix-copy-closure', 1 ],
-  [
-    'nix.conf',
-    5,
-    conf_file_md.full_path(),
-    [ conf_file_md, experimental_features_shortlist_md ],
-  ],
+  [ 'nix.conf', 5, conf_file_md.full_path() ],
   [ 'nix-daemon', 8 ],
   [ 'nix-profiles', 5, 'files/profiles.md' ],
 ]
@@ -406,24 +330,19 @@ foreach entry : nix_manpages
   # Therefore we use an optional third element of this array to override the name pattern
   md_file = entry.get(2, title + '.md')
   section = entry[1].to_string()
-  input_file = meson.current_source_dir() / 'source/command-ref' / md_file
-
+  md_file_resolved = join_paths('@INPUT1@/command-ref/', md_file)
   custom_target(
     command : [
       bash,
       '@INPUT0@',
-      # Note: no --out-no-smarty flag (original behavior)
       title,
       section,
-      meson.current_source_dir() / 'source',
-      meson.current_build_dir() / 'source',
-      doc_url,
-      input_file,
+      md_file_resolved,
       '@OUTPUT@',
     ],
     input : [
       files('./render-manpage.sh'),
-      files('./expand-includes.py'),
+      manual_md,
       entry.get(3, []),
       nix_input,
     ],

doc/manual/meson.options

@@ -1,13 +0,0 @@
-option(
-  'official-release',
-  type : 'boolean',
-  value : true,
-  description : 'Whether this is an official release build (affects documentation URLs)',
-)
-
-option(
-  'html-manual',
-  type : 'boolean',
-  value : true,
-  description : 'Whether to build the HTML manual (requires mdbook)',
-)

doc/manual/package.nix

@@ -1,31 +1,19 @@
-{
-  lib,
-  callPackage,
-  mkMesonDerivation,
-  runCommand,
+{ lib
+, mkMesonDerivation
 
-  meson,
-  ninja,
-  lowdown-unsandboxed,
-  mdbook,
-  jq,
-  python3,
-  nix-cli,
-  changelog-d,
-  json-schema-for-humans,
-  officialRelease,
+, meson
+, ninja
+, lowdown
+, mdbook
+, mdbook-linkcheck
+, jq
+, python3
+, rsync
+, nix-cli
 
-  # Configuration Options
+# Configuration Options
 
-  version,
-  /**
-    Whether to build the HTML manual.
-    When false, only manpages are built, avoiding the mdbook dependency.
-  */
-  buildHtmlManual ? true,
-
-  # `tests` attribute
-  testers,
+, version
 }:
 
 let
@@ -37,117 +25,46 @@ mkMesonDerivation (finalAttrs: {
   inherit version;
 
   workDir = ./.;
-  fileset =
-    fileset.difference
-      (fileset.unions [
-        ../../.version
-        # For example JSON
-        ../../src/libutil-tests/data/memory-source-accessor
-        ../../src/libutil-tests/data/hash
-        ../../src/libstore-tests/data/content-address
-        ../../src/libstore-tests/data/store-path
-        ../../src/libstore-tests/data/realisation
-        ../../src/libstore-tests/data/derivation
-        ../../src/libstore-tests/data/derived-path
-        ../../src/libstore-tests/data/path-info
-        ../../src/libstore-tests/data/nar-info
-        ../../src/libstore-tests/data/build-result
-        ../../src/libstore-tests/data/dummy-store
-        # For derivation examples referenced by symlinks in doc/manual/source/protocols/json/schema/
-        ../../tests/functional/derivation
-        # Too many different types of files to filter for now
-        ../../doc/manual
-        ./.
-      ])
-      # Do a blacklist instead
-      ../../doc/manual/package.nix;
+  fileset = fileset.difference
+    (fileset.unions [
+      ../../.version
+      # Too many different types of files to filter for now
+      ../../doc/manual
+      ./.
+    ])
+    # Do a blacklist instead
+    ../../doc/manual/package.nix;
 
   # TODO the man pages should probably be separate
-  outputs =
-    if buildHtmlManual then
-      [
-        "out"
-        "man"
-      ]
-    else
-      [ "out" ]; # Only one output when HTML manual is disabled; use "out" for manpages
+  outputs = [ "out" "man" ];
 
-  # When HTML manual is disabled, install manpages to "out" instead of "man"
-  mesonFlags = [
-    (lib.mesonBool "official-release" officialRelease)
-    (lib.mesonBool "html-manual" buildHtmlManual)
-  ]
-  ++ lib.optionals (!buildHtmlManual) [
-    "--mandir=${placeholder "out"}/share/man"
-  ];
-
-  nativeBuildInputs = [
-    nix-cli
+  # Hack for sake of the dev shell
+  passthru.externalNativeBuildInputs = [
     meson
     ninja
-    (lib.getBin lowdown-unsandboxed)
+    (lib.getBin lowdown)
+    mdbook
+    mdbook-linkcheck
     jq
     python3
-  ]
-  ++ lib.optionals buildHtmlManual [
-    mdbook
-    json-schema-for-humans
-  ]
-  ++ lib.optionals (!officialRelease && buildHtmlManual) [
-    # When not an official release, we likely have changelog entries that have
-    # yet to be rendered.
-    # When released, these are rendered into a committed file to save a dependency.
-    changelog-d
+    rsync
   ];
 
-  preConfigure = ''
-    chmod u+w ./.version
-    echo ${finalAttrs.version} > ./.version
-  '';
+  nativeBuildInputs = finalAttrs.passthru.externalNativeBuildInputs ++ [
+    nix-cli
+  ];
 
-  postInstall = lib.optionalString buildHtmlManual ''
+  preConfigure =
+    ''
+      chmod u+w ./.version
+      echo ${finalAttrs.version} > ./.version
+    '';
+
+  postInstall = ''
     mkdir -p ''$out/nix-support
     echo "doc manual ''$out/share/doc/nix/manual" >> ''$out/nix-support/hydra-build-products
   '';
 
-  passthru = lib.optionalAttrs buildHtmlManual {
-    /**
-      The root of the HTML manual.
-      E.g. "${nix-manual.site}/index.html" exists.
-    */
-
-    site = finalAttrs.finalPackage + "/share/doc/nix/manual";
-
-    tests =
-      let
-        redirect-targets = callPackage ./redirect-targets-html.nix { };
-      in
-      {
-        # https://nixos.org/manual/nixpkgs/stable/index.html#tester-lycheeLinkCheck
-        linkcheck = testers.lycheeLinkCheck {
-          site =
-            let
-              plain = finalAttrs.finalPackage.site;
-            in
-            runCommand "nix-manual-with-redirect-targets" { } ''
-              cp -r ${plain} $out
-              chmod -R u+w $out
-              cp ${redirect-targets}/redirect-targets.html $out/redirect-targets.html
-            '';
-          extraConfig = {
-            exclude = [
-              # Exclude auto-generated JSON schema documentation which has
-              # auto-generated fragment IDs that don't match the link references
-              ".*/protocols/json/.*\\.html"
-              # Exclude undocumented builtins
-              ".*/language/builtins\\.html#builtins-addErrorContext"
-              ".*/language/builtins\\.html#builtins-appendContext"
-            ];
-          };
-        };
-      };
-  };
-
   meta = {
     platforms = lib.platforms.all;
   };

doc/manual/redirect-targets-html.nix

@@ -1,62 +0,0 @@
-# Generates redirect-targets.html containing all redirect targets for link checking.
-# Used by: doc/manual/package.nix (passthru.tests.linkcheck)
-
-{
-  stdenv,
-  lib,
-  jq,
-}:
-
-stdenv.mkDerivation {
-  name = "redirect-targets-html";
-
-  src = lib.fileset.toSource {
-    root = ./.;
-    fileset = ./redirects.json;
-  };
-
-  nativeBuildInputs = [ jq ];
-
-  installPhase = ''
-    mkdir -p $out
-
-    {
-      echo '<!DOCTYPE html>'
-      echo '<html><head><title>Nix Manual Redirect Targets</title></head><body>'
-      echo '<h1>Redirect Targets to Check</h1>'
-      echo '<p>This document contains all redirect targets from the Nix manual.</p>'
-
-      echo '<h2>Client-side redirects (from redirects.json)</h2>'
-      echo '<ul>'
-
-      # Extract all redirects with their source pages to properly resolve relative paths
-      jq -r 'to_entries[] | .key as $page | .value | to_entries[] | "\($page)\t\(.value)"' \
-        redirects.json | while IFS=$'\t' read -r page target; do
-
-        page_dir=$(dirname "$page")
-
-        # Handle fragment-only targets (e.g., #primitives)
-        if [[ "$target" == \#* ]]; then
-          # Fragment is on the same page
-          resolved="$page$target"
-          echo "<li><a href=\"$resolved\">$resolved</a> (fragment on $page)</li>"
-          continue
-        fi
-
-        # Resolve relative path based on the source page location
-        resolved="$page_dir/$target"
-
-        echo "<li><a href=\"$resolved\">$resolved</a> (from $page)</li>"
-      done
-
-      echo '</ul>'
-      echo '</body></html>'
-    } > $out/redirect-targets.html
-
-    echo "Generated redirect targets document with $(grep -c '<li>' $out/redirect-targets.html) links"
-  '';
-
-  meta = {
-    description = "HTML document listing all Nix manual redirect targets for link checking";
-  };
-}

doc/manual/redirects.js

@@ -0,0 +1,455 @@
+// redirect rules for URL fragments (client-side) to prevent link rot.
+// this must be done on the client side, as web servers do not see the fragment part of the URL.
+// it will only work with JavaScript enabled in the browser, but this is the best we can do here.
+// see src/_redirects for path redirects (server-side)
+
+// redirects are declared as follows:
+// each entry has as its key a path matching the requested URL path, relative to the mdBook document root.
+//
+//     IMPORTANT: it must specify the full path with file name and suffix
+//
+// each entry is itself a set of key-value pairs, where
+// - keys are anchors on the matched path.
+// - values are redirection targets relative to the current path.
+
+const redirects = {
+ "index.html": {
+    "part-advanced-topics": "advanced-topics/index.html",
+    "chap-tuning-cores-and-jobs": "advanced-topics/cores-vs-jobs.html",
+    "chap-diff-hook": "advanced-topics/diff-hook.html",
+    "check-dirs-are-unregistered": "advanced-topics/diff-hook.html#check-dirs-are-unregistered",
+    "chap-distributed-builds": "command-ref/conf-file.html#conf-builders",
+    "chap-post-build-hook": "advanced-topics/post-build-hook.html",
+    "chap-post-build-hook-caveats": "advanced-topics/post-build-hook.html#implementation-caveats",
+    "chap-writing-nix-expressions": "language/index.html",
+    "part-command-ref": "command-ref/index.html",
+    "conf-allow-import-from-derivation": "command-ref/conf-file.html#conf-allow-import-from-derivation",
+    "conf-allow-new-privileges": "command-ref/conf-file.html#conf-allow-new-privileges",
+    "conf-allowed-uris": "command-ref/conf-file.html#conf-allowed-uris",
+    "conf-allowed-users": "command-ref/conf-file.html#conf-allowed-users",
+    "conf-auto-optimise-store": "command-ref/conf-file.html#conf-auto-optimise-store",
+    "conf-binary-cache-public-keys": "command-ref/conf-file.html#conf-binary-cache-public-keys",
+    "conf-binary-caches": "command-ref/conf-file.html#conf-binary-caches",
+    "conf-build-compress-log": "command-ref/conf-file.html#conf-build-compress-log",
+    "conf-build-cores": "command-ref/conf-file.html#conf-build-cores",
+    "conf-build-extra-chroot-dirs": "command-ref/conf-file.html#conf-build-extra-chroot-dirs",
+    "conf-build-extra-sandbox-paths": "command-ref/conf-file.html#conf-build-extra-sandbox-paths",
+    "conf-build-fallback": "command-ref/conf-file.html#conf-build-fallback",
+    "conf-build-max-jobs": "command-ref/conf-file.html#conf-build-max-jobs",
+    "conf-build-max-log-size": "command-ref/conf-file.html#conf-build-max-log-size",
+    "conf-build-max-silent-time": "command-ref/conf-file.html#conf-build-max-silent-time",
+    "conf-build-timeout": "command-ref/conf-file.html#conf-build-timeout",
+    "conf-build-use-chroot": "command-ref/conf-file.html#conf-build-use-chroot",
+    "conf-build-use-sandbox": "command-ref/conf-file.html#conf-build-use-sandbox",
+    "conf-build-use-substitutes": "command-ref/conf-file.html#conf-build-use-substitutes",
+    "conf-build-users-group": "command-ref/conf-file.html#conf-build-users-group",
+    "conf-builders": "command-ref/conf-file.html#conf-builders",
+    "conf-builders-use-substitutes": "command-ref/conf-file.html#conf-builders-use-substitutes",
+    "conf-compress-build-log": "command-ref/conf-file.html#conf-compress-build-log",
+    "conf-connect-timeout": "command-ref/conf-file.html#conf-connect-timeout",
+    "conf-cores": "command-ref/conf-file.html#conf-cores",
+    "conf-diff-hook": "command-ref/conf-file.html#conf-diff-hook",
+    "conf-env-keep-derivations": "command-ref/conf-file.html#conf-env-keep-derivations",
+    "conf-extra-binary-caches": "command-ref/conf-file.html#conf-extra-binary-caches",
+    "conf-extra-platforms": "command-ref/conf-file.html#conf-extra-platforms",
+    "conf-extra-sandbox-paths": "command-ref/conf-file.html#conf-extra-sandbox-paths",
+    "conf-extra-substituters": "command-ref/conf-file.html#conf-extra-substituters",
+    "conf-fallback": "command-ref/conf-file.html#conf-fallback",
+    "conf-fsync-metadata": "command-ref/conf-file.html#conf-fsync-metadata",
+    "conf-gc-keep-derivations": "command-ref/conf-file.html#conf-gc-keep-derivations",
+    "conf-gc-keep-outputs": "command-ref/conf-file.html#conf-gc-keep-outputs",
+    "conf-hashed-mirrors": "command-ref/conf-file.html#conf-hashed-mirrors",
+    "conf-http-connections": "command-ref/conf-file.html#conf-http-connections",
+    "conf-keep-build-log": "command-ref/conf-file.html#conf-keep-build-log",
+    "conf-keep-derivations": "command-ref/conf-file.html#conf-keep-derivations",
+    "conf-keep-env-derivations": "command-ref/conf-file.html#conf-keep-env-derivations",
+    "conf-keep-outputs": "command-ref/conf-file.html#conf-keep-outputs",
+    "conf-max-build-log-size": "command-ref/conf-file.html#conf-max-build-log-size",
+    "conf-max-free": "command-ref/conf-file.html#conf-max-free",
+    "conf-max-jobs": "command-ref/conf-file.html#conf-max-jobs",
+    "conf-max-silent-time": "command-ref/conf-file.html#conf-max-silent-time",
+    "conf-min-free": "command-ref/conf-file.html#conf-min-free",
+    "conf-narinfo-cache-negative-ttl": "command-ref/conf-file.html#conf-narinfo-cache-negative-ttl",
+    "conf-narinfo-cache-positive-ttl": "command-ref/conf-file.html#conf-narinfo-cache-positive-ttl",
+    "conf-netrc-file": "command-ref/conf-file.html#conf-netrc-file",
+    "conf-plugin-files": "command-ref/conf-file.html#conf-plugin-files",
+    "conf-post-build-hook": "command-ref/conf-file.html#conf-post-build-hook",
+    "conf-pre-build-hook": "command-ref/conf-file.html#conf-pre-build-hook",
+    "conf-require-sigs": "command-ref/conf-file.html#conf-require-sigs",
+    "conf-restrict-eval": "command-ref/conf-file.html#conf-restrict-eval",
+    "conf-run-diff-hook": "command-ref/conf-file.html#conf-run-diff-hook",
+    "conf-sandbox": "command-ref/conf-file.html#conf-sandbox",
+    "conf-sandbox-dev-shm-size": "command-ref/conf-file.html#conf-sandbox-dev-shm-size",
+    "conf-sandbox-paths": "command-ref/conf-file.html#conf-sandbox-paths",
+    "conf-secret-key-files": "command-ref/conf-file.html#conf-secret-key-files",
+    "conf-show-trace": "command-ref/conf-file.html#conf-show-trace",
+    "conf-stalled-download-timeout": "command-ref/conf-file.html#conf-stalled-download-timeout",
+    "conf-substitute": "command-ref/conf-file.html#conf-substitute",
+    "conf-substituters": "command-ref/conf-file.html#conf-substituters",
+    "conf-system": "command-ref/conf-file.html#conf-system",
+    "conf-system-features": "command-ref/conf-file.html#conf-system-features",
+    "conf-tarball-ttl": "command-ref/conf-file.html#conf-tarball-ttl",
+    "conf-timeout": "command-ref/conf-file.html#conf-timeout",
+    "conf-trace-function-calls": "command-ref/conf-file.html#conf-trace-function-calls",
+    "conf-trusted-binary-caches": "command-ref/conf-file.html#conf-trusted-binary-caches",
+    "conf-trusted-public-keys": "command-ref/conf-file.html#conf-trusted-public-keys",
+    "conf-trusted-substituters": "command-ref/conf-file.html#conf-trusted-substituters",
+    "conf-trusted-users": "command-ref/conf-file.html#conf-trusted-users",
+    "extra-sandbox-paths": "command-ref/conf-file.html#extra-sandbox-paths",
+    "sec-conf-file": "command-ref/conf-file.html",
+    "env-NIX_PATH": "command-ref/env-common.html#env-NIX_PATH",
+    "env-common": "command-ref/env-common.html",
+    "envar-remote": "command-ref/env-common.html#env-NIX_REMOTE",
+    "sec-common-env": "command-ref/env-common.html",
+    "ch-files": "command-ref/files.html",
+    "ch-main-commands": "command-ref/main-commands.html",
+    "opt-out-link": "command-ref/nix-build.html#opt-out-link",
+    "sec-nix-build": "command-ref/nix-build.html",
+    "sec-nix-channel": "command-ref/nix-channel.html",
+    "sec-nix-collect-garbage": "command-ref/nix-collect-garbage.html",
+    "sec-nix-copy-closure": "command-ref/nix-copy-closure.html",
+    "sec-nix-daemon": "command-ref/nix-daemon.html",
+    "refsec-nix-env-install-examples": "command-ref/nix-env.html#examples",
+    "rsec-nix-env-install": "command-ref/nix-env.html#operation---install",
+    "rsec-nix-env-set": "command-ref/nix-env.html#operation---set",
+    "rsec-nix-env-set-flag": "command-ref/nix-env.html#operation---set-flag",
+    "rsec-nix-env-upgrade": "command-ref/nix-env.html#operation---upgrade",
+    "sec-nix-env": "command-ref/nix-env.html",
+    "ssec-version-comparisons": "command-ref/nix-env.html#versions",
+    "sec-nix-hash": "command-ref/nix-hash.html",
+    "sec-nix-instantiate": "command-ref/nix-instantiate.html",
+    "sec-nix-prefetch-url": "command-ref/nix-prefetch-url.html",
+    "sec-nix-shell": "command-ref/nix-shell.html",
+    "ssec-nix-shell-shebang": "command-ref/nix-shell.html#use-as-a--interpreter",
+    "nixref-queries": "command-ref/nix-store.html#queries",
+    "opt-add-root": "command-ref/nix-store.html#opt-add-root",
+    "refsec-nix-store-dump": "command-ref/nix-store.html#operation---dump",
+    "refsec-nix-store-export": "command-ref/nix-store.html#operation---export",
+    "refsec-nix-store-import": "command-ref/nix-store.html#operation---import",
+    "refsec-nix-store-query": "command-ref/nix-store.html#operation---query",
+    "refsec-nix-store-verify": "command-ref/nix-store.html#operation---verify",
+    "rsec-nix-store-gc": "command-ref/nix-store.html#operation---gc",
+    "rsec-nix-store-generate-binary-cache-key": "command-ref/nix-store.html#operation---generate-binary-cache-key",
+    "rsec-nix-store-realise": "command-ref/nix-store.html#operation---realise",
+    "rsec-nix-store-serve": "command-ref/nix-store.html#operation---serve",
+    "sec-nix-store": "command-ref/nix-store.html",
+    "opt-I": "command-ref/opt-common.html#opt-I",
+    "opt-attr": "command-ref/opt-common.html#opt-attr",
+    "opt-common": "command-ref/opt-common.html",
+    "opt-cores": "command-ref/opt-common.html#opt-cores",
+    "opt-log-format": "command-ref/opt-common.html#opt-log-format",
+    "opt-max-jobs": "command-ref/opt-common.html#opt-max-jobs",
+    "opt-max-silent-time": "command-ref/opt-common.html#opt-max-silent-time",
+    "opt-timeout": "command-ref/opt-common.html#opt-timeout",
+    "sec-common-options": "command-ref/opt-common.html",
+    "ch-utilities": "command-ref/utilities.html",
+    "chap-hacking": "development/building.html",
+    "adv-attr-allowSubstitutes": "language/advanced-attributes.html#adv-attr-allowSubstitutes",
+    "adv-attr-allowedReferences": "language/advanced-attributes.html#adv-attr-allowedReferences",
+    "adv-attr-allowedRequisites": "language/advanced-attributes.html#adv-attr-allowedRequisites",
+    "adv-attr-disallowedReferences": "language/advanced-attributes.html#adv-attr-disallowedReferences",
+    "adv-attr-disallowedRequisites": "language/advanced-attributes.html#adv-attr-disallowedRequisites",
+    "adv-attr-exportReferencesGraph": "language/advanced-attributes.html#adv-attr-exportReferencesGraph",
+    "adv-attr-impureEnvVars": "language/advanced-attributes.html#adv-attr-impureEnvVars",
+    "adv-attr-outputHash": "language/advanced-attributes.html#adv-attr-outputHash",
+    "adv-attr-outputHashAlgo": "language/advanced-attributes.html#adv-attr-outputHashAlgo",
+    "adv-attr-outputHashMode": "language/advanced-attributes.html#adv-attr-outputHashMode",
+    "adv-attr-passAsFile": "language/advanced-attributes.html#adv-attr-passAsFile",
+    "adv-attr-preferLocalBuild": "language/advanced-attributes.html#adv-attr-preferLocalBuild",
+    "fixed-output-drvs": "language/advanced-attributes.html#adv-attr-outputHash",
+    "sec-advanced-attributes": "language/advanced-attributes.html",
+    "builtin-abort": "language/builtins.html#builtins-abort",
+    "builtin-add": "language/builtins.html#builtins-add",
+    "builtin-all": "language/builtins.html#builtins-all",
+    "builtin-any": "language/builtins.html#builtins-any",
+    "builtin-attrNames": "language/builtins.html#builtins-attrNames",
+    "builtin-attrValues": "language/builtins.html#builtins-attrValues",
+    "builtin-baseNameOf": "language/builtins.html#builtins-baseNameOf",
+    "builtin-bitAnd": "language/builtins.html#builtins-bitAnd",
+    "builtin-bitOr": "language/builtins.html#builtins-bitOr",
+    "builtin-bitXor": "language/builtins.html#builtins-bitXor",
+    "builtin-builtins": "language/builtins.html#builtins-builtins",
+    "builtin-compareVersions": "language/builtins.html#builtins-compareVersions",
+    "builtin-concatLists": "language/builtins.html#builtins-concatLists",
+    "builtin-concatStringsSep": "language/builtins.html#builtins-concatStringsSep",
+    "builtin-currentSystem": "language/builtins.html#builtins-currentSystem",
+    "builtin-deepSeq": "language/builtins.html#builtins-deepSeq",
+    "builtin-derivation": "language/builtins.html#builtins-derivation",
+    "builtin-dirOf": "language/builtins.html#builtins-dirOf",
+    "builtin-div": "language/builtins.html#builtins-div",
+    "builtin-elem": "language/builtins.html#builtins-elem",
+    "builtin-elemAt": "language/builtins.html#builtins-elemAt",
+    "builtin-fetchGit": "language/builtins.html#builtins-fetchGit",
+    "builtin-fetchTarball": "language/builtins.html#builtins-fetchTarball",
+    "builtin-fetchurl": "language/builtins.html#builtins-fetchurl",
+    "builtin-filterSource": "language/builtins.html#builtins-filterSource",
+    "builtin-foldl-prime": "language/builtins.html#builtins-foldl-prime",
+    "builtin-fromJSON": "language/builtins.html#builtins-fromJSON",
+    "builtin-functionArgs": "language/builtins.html#builtins-functionArgs",
+    "builtin-genList": "language/builtins.html#builtins-genList",
+    "builtin-getAttr": "language/builtins.html#builtins-getAttr",
+    "builtin-getEnv": "language/builtins.html#builtins-getEnv",
+    "builtin-hasAttr": "language/builtins.html#builtins-hasAttr",
+    "builtin-hashFile": "language/builtins.html#builtins-hashFile",
+    "builtin-hashString": "language/builtins.html#builtins-hashString",
+    "builtin-head": "language/builtins.html#builtins-head",
+    "builtin-import": "language/builtins.html#builtins-import",
+    "builtin-intersectAttrs": "language/builtins.html#builtins-intersectAttrs",
+    "builtin-isAttrs": "language/builtins.html#builtins-isAttrs",
+    "builtin-isBool": "language/builtins.html#builtins-isBool",
+    "builtin-isFloat": "language/builtins.html#builtins-isFloat",
+    "builtin-isFunction": "language/builtins.html#builtins-isFunction",
+    "builtin-isInt": "language/builtins.html#builtins-isInt",
+    "builtin-isList": "language/builtins.html#builtins-isList",
+    "builtin-isNull": "language/builtins.html#builtins-isNull",
+    "builtin-isString": "language/builtins.html#builtins-isString",
+    "builtin-length": "language/builtins.html#builtins-length",
+    "builtin-lessThan": "language/builtins.html#builtins-lessThan",
+    "builtin-listToAttrs": "language/builtins.html#builtins-listToAttrs",
+    "builtin-map": "language/builtins.html#builtins-map",
+    "builtin-match": "language/builtins.html#builtins-match",
+    "builtin-mul": "language/builtins.html#builtins-mul",
+    "builtin-parseDrvName": "language/builtins.html#builtins-parseDrvName",
+    "builtin-path": "language/builtins.html#builtins-path",
+    "builtin-pathExists": "language/builtins.html#builtins-pathExists",
+    "builtin-placeholder": "language/builtins.html#builtins-placeholder",
+    "builtin-readDir": "language/builtins.html#builtins-readDir",
+    "builtin-readFile": "language/builtins.html#builtins-readFile",
+    "builtin-removeAttrs": "language/builtins.html#builtins-removeAttrs",
+    "builtin-replaceStrings": "language/builtins.html#builtins-replaceStrings",
+    "builtin-seq": "language/builtins.html#builtins-seq",
+    "builtin-sort": "language/builtins.html#builtins-sort",
+    "builtin-split": "language/builtins.html#builtins-split",
+    "builtin-splitVersion": "language/builtins.html#builtins-splitVersion",
+    "builtin-stringLength": "language/builtins.html#builtins-stringLength",
+    "builtin-sub": "language/builtins.html#builtins-sub",
+    "builtin-substring": "language/builtins.html#builtins-substring",
+    "builtin-tail": "language/builtins.html#builtins-tail",
+    "builtin-throw": "language/builtins.html#builtins-throw",
+    "builtin-toFile": "language/builtins.html#builtins-toFile",
+    "builtin-toJSON": "language/builtins.html#builtins-toJSON",
+    "builtin-toPath": "language/builtins.html#builtins-toPath",
+    "builtin-toString": "language/builtins.html#builtins-toString",
+    "builtin-toXML": "language/builtins.html#builtins-toXML",
+    "builtin-trace": "language/builtins.html#builtins-trace",
+    "builtin-tryEval": "language/builtins.html#builtins-tryEval",
+    "builtin-typeOf": "language/builtins.html#builtins-typeOf",
+    "ssec-builtins": "language/builtins.html",
+    "attr-system": "language/derivations.html#attr-system",
+    "ssec-derivation": "language/derivations.html",
+    "ch-expression-language": "language/index.html",
+    "sec-constructs": "language/syntax.html",
+    "sect-let-language": "language/syntax.html#let-expressions",
+    "ss-functions": "language/syntax.html#functions",
+    "sec-language-operators": "language/operators.html",
+    "table-operators": "language/operators.html",
+    "ssec-values": "language/types.html",
+    "gloss-closure": "glossary.html#gloss-closure",
+    "gloss-derivation": "glossary.html#gloss-derivation",
+    "gloss-deriver": "glossary.html#gloss-deriver",
+    "gloss-nar": "glossary.html#gloss-nar",
+    "gloss-output-path": "glossary.html#gloss-output-path",
+    "gloss-profile": "glossary.html#gloss-profile",
+    "gloss-reachable": "glossary.html#gloss-reachable",
+    "gloss-reference": "glossary.html#gloss-reference",
+    "gloss-substitute": "glossary.html#gloss-substitute",
+    "gloss-user-env": "glossary.html#gloss-user-env",
+    "gloss-validity": "glossary.html#gloss-validity",
+    "part-glossary": "glossary.html",
+    "sec-building-source": "installation/building-source.html",
+    "ch-env-variables": "installation/env-variables.html",
+    "sec-installer-proxy-settings": "installation/env-variables.html#proxy-environment-variables",
+    "sec-nix-ssl-cert-file": "installation/env-variables.html#nix_ssl_cert_file",
+    "sec-nix-ssl-cert-file-with-nix-daemon-and-macos": "installation/env-variables.html#nix_ssl_cert_file-with-macos-and-the-nix-daemon",
+    "chap-installation": "installation/index.html",
+    "ch-installing-binary": "installation/installing-binary.html",
+    "sect-macos-installation": "installation/installing-binary.html#macos-installation",
+    "sect-macos-installation-change-store-prefix": "installation/installing-binary.html#macos-installation",
+    "sect-macos-installation-encrypted-volume": "installation/installing-binary.html#macos-installation",
+    "sect-macos-installation-recommended-notes": "installation/installing-binary.html#macos-installation",
+    "sect-macos-installation-symlink": "installation/installing-binary.html#macos-installation",
+    "sect-multi-user-installation": "installation/installing-binary.html#multi-user-installation",
+    "sect-nix-install-binary-tarball": "installation/installing-binary.html#installing-from-a-binary-tarball",
+    "sect-nix-install-pinned-version-url": "installation/installing-binary.html#installing-a-pinned-nix-version-from-a-url",
+    "sect-single-user-installation": "installation/installing-binary.html#single-user-installation",
+    "ch-installing-source": "installation/installing-source.html",
+    "ssec-multi-user": "installation/multi-user.html",
+    "ch-nix-security": "installation/nix-security.html",
+    "sec-obtaining-source": "installation/obtaining-source.html",
+    "sec-prerequisites-source": "installation/prerequisites-source.html",
+    "sec-single-user": "installation/single-user.html",
+    "ch-supported-platforms": "installation/supported-platforms.html",
+    "ch-upgrading-nix": "installation/upgrading.html",
+    "ch-about-nix": "introduction.html",
+    "chap-introduction": "introduction.html",
+    "ch-basic-package-mgmt": "package-management/basic-package-mgmt.html",
+    "ssec-binary-cache-substituter": "package-management/binary-cache-substituter.html",
+    "sec-channels": "command-ref/nix-channel.html",
+    "ssec-copy-closure": "command-ref/nix-copy-closure.html",
+    "sec-garbage-collection": "package-management/garbage-collection.html",
+    "ssec-gc-roots": "package-management/garbage-collector-roots.html",
+    "chap-package-management": "package-management/index.html",
+    "sec-profiles": "package-management/profiles.html",
+    "ssec-s3-substituter": "store/types/s3-substituter.html",
+    "ssec-s3-substituter-anonymous-reads": "store/types/s3-substituter.html#anonymous-reads-to-your-s3-compatible-binary-cache",
+    "ssec-s3-substituter-authenticated-reads": "store/types/s3-substituter.html#authenticated-reads-to-your-s3-binary-cache",
+    "ssec-s3-substituter-authenticated-writes": "store/types/s3-substituter.html#authenticated-writes-to-your-s3-compatible-binary-cache",
+    "sec-sharing-packages": "package-management/sharing-packages.html",
+    "ssec-ssh-substituter": "package-management/ssh-substituter.html",
+    "chap-quick-start": "quick-start.html",
+    "sec-relnotes": "release-notes/index.html",
+    "ch-relnotes-0.10.1": "release-notes/rl-0.10.1.html",
+    "ch-relnotes-0.10": "release-notes/rl-0.10.html",
+    "ssec-relnotes-0.11": "release-notes/rl-0.11.html",
+    "ssec-relnotes-0.12": "release-notes/rl-0.12.html",
+    "ssec-relnotes-0.13": "release-notes/rl-0.13.html",
+    "ssec-relnotes-0.14": "release-notes/rl-0.14.html",
+    "ssec-relnotes-0.15": "release-notes/rl-0.15.html",
+    "ssec-relnotes-0.16": "release-notes/rl-0.16.html",
+    "ch-relnotes-0.5": "release-notes/rl-0.5.html",
+    "ch-relnotes-0.6": "release-notes/rl-0.6.html",
+    "ch-relnotes-0.7": "release-notes/rl-0.7.html",
+    "ch-relnotes-0.8.1": "release-notes/rl-0.8.1.html",
+    "ch-relnotes-0.8": "release-notes/rl-0.8.html",
+    "ch-relnotes-0.9.1": "release-notes/rl-0.9.1.html",
+    "ch-relnotes-0.9.2": "release-notes/rl-0.9.2.html",
+    "ch-relnotes-0.9": "release-notes/rl-0.9.html",
+    "ssec-relnotes-1.0": "release-notes/rl-1.0.html",
+    "ssec-relnotes-1.1": "release-notes/rl-1.1.html",
+    "ssec-relnotes-1.10": "release-notes/rl-1.10.html",
+    "ssec-relnotes-1.11.10": "release-notes/rl-1.11.10.html",
+    "ssec-relnotes-1.11": "release-notes/rl-1.11.html",
+    "ssec-relnotes-1.2": "release-notes/rl-1.2.html",
+    "ssec-relnotes-1.3": "release-notes/rl-1.3.html",
+    "ssec-relnotes-1.4": "release-notes/rl-1.4.html",
+    "ssec-relnotes-1.5.1": "release-notes/rl-1.5.1.html",
+    "ssec-relnotes-1.5.2": "release-notes/rl-1.5.2.html",
+    "ssec-relnotes-1.5": "release-notes/rl-1.5.html",
+    "ssec-relnotes-1.6.1": "release-notes/rl-1.6.1.html",
+    "ssec-relnotes-1.6.0": "release-notes/rl-1.6.html",
+    "ssec-relnotes-1.7": "release-notes/rl-1.7.html",
+    "ssec-relnotes-1.8": "release-notes/rl-1.8.html",
+    "ssec-relnotes-1.9": "release-notes/rl-1.9.html",
+    "ssec-relnotes-2.0": "release-notes/rl-2.0.html",
+    "ssec-relnotes-2.1": "release-notes/rl-2.1.html",
+    "ssec-relnotes-2.2": "release-notes/rl-2.2.html",
+    "ssec-relnotes-2.3": "release-notes/rl-2.3.html",
+  },
+  "language/types.html": {
+    "simple-values": "#primitives",
+    "lists": "#list",
+    "strings": "#string",
+    "attribute-sets": "#attribute-set",
+    "type-number": "#type-int",
+  },
+  "language/syntax.html": {
+    "scoping-rules": "scoping.html",
+    "string-literal": "string-literals.html",
+  },
+  "installation/installing-binary.html": {
+    "linux": "uninstall.html#linux",
+    "macos": "uninstall.html#macos",
+    "uninstalling": "uninstall.html",
+  },
+  "development/building.html": {
+    "nix-with-flakes": "#building-nix-with-flakes",
+    "classic-nix": "#building-nix",
+    "running-tests": "testing.html#running-tests",
+    "unit-tests": "testing.html#unit-tests",
+    "functional-tests": "testing.html#functional-tests",
+    "debugging-failing-functional-tests": "testing.html#debugging-failing-functional-tests",
+    "integration-tests": "testing.html#integration-tests",
+    "installer-tests": "testing.html#installer-tests",
+    "one-time-setup": "testing.html#one-time-setup",
+    "using-the-ci-generated-installer-for-manual-testing": "testing.html#using-the-ci-generated-installer-for-manual-testing",
+    "characterization-testing": "testing.html#characterisation-testing-unit",
+    "add-a-release-note": "contributing.html#add-a-release-note",
+    "add-an-entry": "contributing.html#add-an-entry",
+    "build-process": "contributing.html#build-process",
+    "reverting": "contributing.html#reverting",
+    "branches": "contributing.html#branches",
+  },
+  "glossary.html": {
+    "gloss-local-store": "store/types/local-store.html",
+    "gloss-chroot-store": "store/types/local-store.html",
+  },
+};
+
+// the following code matches the current page's URL against the set of redirects.
+//
+// it is written to minimize the latency between page load and redirect.
+// therefore we avoid function calls, copying data, and unnecessary loops.
+// IMPORTANT: we use stateful array operations and their order matters!
+//
+// matching URLs is more involved than it should be:
+//
+// 1. `document.location.pathname` can have an arbitrary prefix.
+//
+// 2. `path_to_root` is set by mdBook. it consists only of `../`s and
+//    determines the depth of `<path>` relative to the prefix:
+//
+//          `document.location.pathname`
+//        |------------------------------|
+//        /<prefix>/<path>/[<file>[.html]][#<anchor>]
+//                  |----|
+//              `path_to_root` has same number of path segments
+//
+//    source: https://phaiax.github.io/mdBook/format/theme/index-hbs.html#data
+//
+// 3. the following paths are equivalent:
+//
+//        /foo/bar/
+//        /foo/bar/index.html
+//        /foo/bar/index
+//
+//  4. the following paths are also equivalent:
+//
+//        /foo/bar/baz
+//        /foo/bar/baz.html
+//
+
+let segments = document.location.pathname.split('/');
+
+let file = segments.pop();
+
+// normalize file name
+if (file === '') { file = "index.html"; }
+else if (!file.endsWith('.html')) { file = file + '.html'; }
+
+segments.push(file);
+
+// use `path_to_root` to discern prefix from path.
+const depth = path_to_root.split('/').length;
+
+// remove segments containing prefix. the following works because
+// 1. the original `document.location.pathname` is absolute,
+//    hence first element of `segments` is always empty.
+// 2. last element of splitting `path_to_root` is also always empty.
+// 3. last element of `segments` is the file name.
+//
+// visual example:
+//
+//     '/foo/bar/baz.html'.split('/') -> [ '', 'foo', 'bar', 'baz.html' ]
+//          '../'.split('/')          -> [ '..', '' ]
+//
+// the following operations will then result in
+//
+//     path = 'bar/baz.html'
+//
+segments.splice(0, segments.length - depth);
+const path = segments.join('/');
+
+// anchor starts with the hash character (`#`),
+// but our redirect declarations don't, so we strip it.
+// example:
+//     document.location.hash -> '#foo'
+//     document.location.hash.substring(1) -> 'foo'
+const anchor = document.location.hash.substring(1);
+
+const redirect = redirects[path];
+if (redirect) {
+  const target = redirect[anchor];
+  if (target) {
+    document.location.href = target;
+  }
+}

doc/manual/redirects.js.in

@@ -1,94 +0,0 @@
-// redirect rules for URL fragments (client-side) to prevent link rot.
-// this must be done on the client side, as web servers do not see the fragment part of the URL.
-// it will only work with JavaScript enabled in the browser, but this is the best we can do here.
-// see source/_redirects for path redirects (server-side)
-
-// redirects are declared as follows:
-// each entry has as its key a path matching the requested URL path, relative to the mdBook document root.
-//
-//     IMPORTANT: it must specify the full path with file name and suffix
-//
-// each entry is itself a set of key-value pairs, where
-// - keys are anchors on the matched path.
-// - values are redirection targets relative to the current path.
-
-const redirects = @REDIRECTS_JSON@;
-
-// the following code matches the current page's URL against the set of redirects.
-//
-// it is written to minimize the latency between page load and redirect.
-// therefore we avoid function calls, copying data, and unnecessary loops.
-// IMPORTANT: we use stateful array operations and their order matters!
-//
-// matching URLs is more involved than it should be:
-//
-// 1. `document.location.pathname` can have an arbitrary prefix.
-//
-// 2. `path_to_root` is set by mdBook. it consists only of `../`s and
-//    determines the depth of `<path>` relative to the prefix:
-//
-//          `document.location.pathname`
-//        |------------------------------|
-//        /<prefix>/<path>/[<file>[.html]][#<anchor>]
-//                  |----|
-//              `path_to_root` has same number of path segments
-//
-//    source: https://phaiax.github.io/mdBook/format/theme/index-hbs.html#data
-//
-// 3. the following paths are equivalent:
-//
-//        /foo/bar/
-//        /foo/bar/index.html
-//        /foo/bar/index
-//
-//  4. the following paths are also equivalent:
-//
-//        /foo/bar/baz
-//        /foo/bar/baz.html
-//
-
-let segments = document.location.pathname.split('/');
-
-let file = segments.pop();
-
-// normalize file name
-if (file === '') { file = "index.html"; }
-else if (!file.endsWith('.html')) { file = file + '.html'; }
-
-segments.push(file);
-
-// use `path_to_root` to discern prefix from path.
-const depth = path_to_root.split('/').length;
-
-// remove segments containing prefix. the following works because
-// 1. the original `document.location.pathname` is absolute,
-//    hence first element of `segments` is always empty.
-// 2. last element of splitting `path_to_root` is also always empty.
-// 3. last element of `segments` is the file name.
-//
-// visual example:
-//
-//     '/foo/bar/baz.html'.split('/') -> [ '', 'foo', 'bar', 'baz.html' ]
-//          '../'.split('/')          -> [ '..', '' ]
-//
-// the following operations will then result in
-//
-//     path = 'bar/baz.html'
-//
-segments.splice(0, segments.length - depth);
-const path = segments.join('/');
-
-// anchor starts with the hash character (`#`),
-// but our redirect declarations don't, so we strip it.
-// example:
-//     document.location.hash -> '#foo'
-//     document.location.hash.substring(1) -> 'foo'
-const anchor = document.location.hash.substring(1);
-
-const redirect = redirects[path];
-if (redirect) {
-  const target = redirect[anchor];
-  if (target) {
-    document.location.href = target;
-  }
-}

doc/manual/redirects.json

@@ -1,372 +0,0 @@
-{
-    "index.html": {
-        "part-advanced-topics": "advanced-topics/index.html",
-        "chap-tuning-cores-and-jobs": "advanced-topics/cores-vs-jobs.html",
-        "chap-diff-hook": "advanced-topics/diff-hook.html",
-        "check-dirs-are-unregistered": "advanced-topics/diff-hook.html#check-dirs-are-unregistered",
-        "chap-distributed-builds": "command-ref/conf-file.html#conf-builders",
-        "chap-post-build-hook": "advanced-topics/post-build-hook.html",
-        "chap-post-build-hook-caveats": "advanced-topics/post-build-hook.html#implementation-caveats",
-        "chap-writing-nix-expressions": "language/index.html",
-        "part-command-ref": "command-ref/index.html",
-        "conf-allow-import-from-derivation": "command-ref/conf-file.html#conf-allow-import-from-derivation",
-        "conf-allow-new-privileges": "command-ref/conf-file.html#conf-allow-new-privileges",
-        "conf-allowed-uris": "command-ref/conf-file.html#conf-allowed-uris",
-        "conf-allowed-users": "command-ref/conf-file.html#conf-allowed-users",
-        "conf-auto-optimise-store": "command-ref/conf-file.html#conf-auto-optimise-store",
-        "conf-binary-cache-public-keys": "command-ref/conf-file.html#conf-trusted-public-keys",
-        "conf-binary-caches": "command-ref/conf-file.html#conf-substituters",
-        "conf-build-compress-log": "command-ref/conf-file.html#conf-compress-build-log",
-        "conf-build-cores": "command-ref/conf-file.html#conf-cores",
-        "conf-build-extra-chroot-dirs": "command-ref/conf-file.html#conf-sandbox-paths",
-        "conf-build-extra-sandbox-paths": "command-ref/conf-file.html#conf-sandbox-paths",
-        "conf-build-fallback": "command-ref/conf-file.html#conf-fallback",
-        "conf-build-max-jobs": "command-ref/conf-file.html#conf-max-jobs",
-        "conf-build-max-log-size": "command-ref/conf-file.html#conf-max-build-log-size",
-        "conf-build-max-silent-time": "command-ref/conf-file.html#conf-max-silent-time",
-        "conf-build-timeout": "command-ref/conf-file.html#conf-timeout",
-        "conf-build-use-chroot": "command-ref/conf-file.html#conf-sandbox",
-        "conf-build-use-sandbox": "command-ref/conf-file.html#conf-sandbox",
-        "conf-build-use-substitutes": "command-ref/conf-file.html#conf-substitute",
-        "conf-build-users-group": "command-ref/conf-file.html#conf-build-users-group",
-        "conf-builders": "command-ref/conf-file.html#conf-builders",
-        "conf-builders-use-substitutes": "command-ref/conf-file.html#conf-builders-use-substitutes",
-        "conf-compress-build-log": "command-ref/conf-file.html#conf-compress-build-log",
-        "conf-connect-timeout": "command-ref/conf-file.html#conf-connect-timeout",
-        "conf-cores": "command-ref/conf-file.html#conf-cores",
-        "conf-diff-hook": "command-ref/conf-file.html#conf-diff-hook",
-        "conf-env-keep-derivations": "command-ref/conf-file.html#conf-keep-env-derivations",
-        "conf-extra-binary-caches": "command-ref/conf-file.html#conf-substituters",
-        "conf-extra-platforms": "command-ref/conf-file.html#conf-extra-platforms",
-        "conf-extra-sandbox-paths": "command-ref/conf-file.html#conf-sandbox-paths",
-        "conf-extra-substituters": "command-ref/conf-file.html#conf-substituters",
-        "conf-fallback": "command-ref/conf-file.html#conf-fallback",
-        "conf-fsync-metadata": "command-ref/conf-file.html#conf-fsync-metadata",
-        "conf-gc-keep-derivations": "command-ref/conf-file.html#conf-keep-derivations",
-        "conf-gc-keep-outputs": "command-ref/conf-file.html#conf-keep-outputs",
-        "conf-hashed-mirrors": "command-ref/conf-file.html#conf-hashed-mirrors",
-        "conf-http-connections": "command-ref/conf-file.html#conf-http-connections",
-        "conf-keep-build-log": "command-ref/conf-file.html#conf-keep-build-log",
-        "conf-keep-derivations": "command-ref/conf-file.html#conf-keep-derivations",
-        "conf-keep-env-derivations": "command-ref/conf-file.html#conf-keep-env-derivations",
-        "conf-keep-outputs": "command-ref/conf-file.html#conf-keep-outputs",
-        "conf-max-build-log-size": "command-ref/conf-file.html#conf-max-build-log-size",
-        "conf-max-free": "command-ref/conf-file.html#conf-max-free",
-        "conf-max-jobs": "command-ref/conf-file.html#conf-max-jobs",
-        "conf-max-silent-time": "command-ref/conf-file.html#conf-max-silent-time",
-        "conf-min-free": "command-ref/conf-file.html#conf-min-free",
-        "conf-narinfo-cache-negative-ttl": "command-ref/conf-file.html#conf-narinfo-cache-negative-ttl",
-        "conf-narinfo-cache-positive-ttl": "command-ref/conf-file.html#conf-narinfo-cache-positive-ttl",
-        "conf-netrc-file": "command-ref/conf-file.html#conf-netrc-file",
-        "conf-plugin-files": "command-ref/conf-file.html#conf-plugin-files",
-        "conf-post-build-hook": "command-ref/conf-file.html#conf-post-build-hook",
-        "conf-pre-build-hook": "command-ref/conf-file.html#conf-pre-build-hook",
-        "conf-require-sigs": "command-ref/conf-file.html#conf-require-sigs",
-        "conf-restrict-eval": "command-ref/conf-file.html#conf-restrict-eval",
-        "conf-run-diff-hook": "command-ref/conf-file.html#conf-run-diff-hook",
-        "conf-sandbox": "command-ref/conf-file.html#conf-sandbox",
-        "conf-sandbox-dev-shm-size": "command-ref/conf-file.html#conf-sandbox-dev-shm-size",
-        "conf-sandbox-paths": "command-ref/conf-file.html#conf-sandbox-paths",
-        "conf-secret-key-files": "command-ref/conf-file.html#conf-secret-key-files",
-        "conf-show-trace": "command-ref/conf-file.html#conf-show-trace",
-        "conf-stalled-download-timeout": "command-ref/conf-file.html#conf-stalled-download-timeout",
-        "conf-substitute": "command-ref/conf-file.html#conf-substitute",
-        "conf-substituters": "command-ref/conf-file.html#conf-substituters",
-        "conf-system": "command-ref/conf-file.html#conf-system",
-        "conf-system-features": "command-ref/conf-file.html#conf-system-features",
-        "conf-tarball-ttl": "command-ref/conf-file.html#conf-tarball-ttl",
-        "conf-timeout": "command-ref/conf-file.html#conf-timeout",
-        "conf-trace-function-calls": "command-ref/conf-file.html#conf-trace-function-calls",
-        "conf-trusted-binary-caches": "command-ref/conf-file.html#conf-trusted-substituters",
-        "conf-trusted-public-keys": "command-ref/conf-file.html#conf-trusted-public-keys",
-        "conf-trusted-substituters": "command-ref/conf-file.html#conf-trusted-substituters",
-        "conf-trusted-users": "command-ref/conf-file.html#conf-trusted-users",
-        "extra-sandbox-paths": "command-ref/conf-file.html#conf-sandbox-paths",
-        "sec-conf-file": "command-ref/conf-file.html",
-        "env-NIX_PATH": "command-ref/env-common.html#env-NIX_PATH",
-        "env-common": "command-ref/env-common.html",
-        "envar-remote": "command-ref/env-common.html#env-NIX_REMOTE",
-        "sec-common-env": "command-ref/env-common.html",
-        "ch-files": "command-ref/files.html",
-        "ch-main-commands": "command-ref/main-commands.html",
-        "opt-out-link": "command-ref/nix-build.html#opt-out-link",
-        "sec-nix-build": "command-ref/nix-build.html",
-        "sec-nix-channel": "command-ref/nix-channel.html",
-        "sec-nix-collect-garbage": "command-ref/nix-collect-garbage.html",
-        "sec-nix-copy-closure": "command-ref/nix-copy-closure.html",
-        "sec-nix-daemon": "command-ref/nix-daemon.html",
-        "refsec-nix-env-install-examples": "command-ref/nix-env/install.html#examples",
-        "rsec-nix-env-install": "command-ref/nix-env/install.html",
-        "rsec-nix-env-set": "command-ref/nix-env/set.html",
-        "rsec-nix-env-set-flag": "command-ref/nix-env/set-flag.html",
-        "rsec-nix-env-upgrade": "command-ref/nix-env/upgrade.html",
-        "sec-nix-env": "command-ref/nix-env.html",
-        "ssec-version-comparisons": "command-ref/nix-env.html#selectors",
-        "sec-nix-hash": "command-ref/nix-hash.html",
-        "sec-nix-instantiate": "command-ref/nix-instantiate.html",
-        "sec-nix-prefetch-url": "command-ref/nix-prefetch-url.html",
-        "sec-nix-shell": "command-ref/nix-shell.html",
-        "ssec-nix-shell-shebang": "command-ref/nix-shell.html#use-as-a--interpreter",
-        "nixref-queries": "command-ref/nix-store/query.html#queries",
-        "opt-add-root": "command-ref/nix-store/query.html#opt-add-root",
-        "refsec-nix-store-dump": "command-ref/nix-store/dump.html",
-        "refsec-nix-store-export": "command-ref/nix-store/export.html",
-        "refsec-nix-store-import": "command-ref/nix-store/import.html",
-        "refsec-nix-store-query": "command-ref/nix-store/query.html",
-        "refsec-nix-store-verify": "command-ref/nix-store/verify.html",
-        "rsec-nix-store-gc": "command-ref/nix-store/gc.html",
-        "rsec-nix-store-generate-binary-cache-key": "command-ref/nix-store/generate-binary-cache-key.html",
-        "rsec-nix-store-realise": "command-ref/nix-store/realise.html",
-        "rsec-nix-store-serve": "command-ref/nix-store/serve.html",
-        "sec-nix-store": "command-ref/nix-store.html",
-        "opt-I": "command-ref/opt-common.html#opt-I",
-        "opt-attr": "command-ref/opt-common.html#opt-attr",
-        "opt-common": "command-ref/opt-common.html",
-        "opt-cores": "command-ref/opt-common.html#opt-cores",
-        "opt-log-format": "command-ref/opt-common.html#opt-log-format",
-        "opt-max-jobs": "command-ref/opt-common.html#opt-max-jobs",
-        "opt-max-silent-time": "command-ref/opt-common.html#opt-max-silent-time",
-        "opt-timeout": "command-ref/opt-common.html#opt-timeout",
-        "sec-common-options": "command-ref/opt-common.html",
-        "ch-utilities": "command-ref/utilities.html",
-        "chap-hacking": "development/building.html",
-        "adv-attr-allowSubstitutes": "language/advanced-attributes.html#adv-attr-allowSubstitutes",
-        "adv-attr-allowedReferences": "language/advanced-attributes.html#adv-attr-allowedReferences",
-        "adv-attr-allowedRequisites": "language/advanced-attributes.html#adv-attr-allowedRequisites",
-        "adv-attr-disallowedReferences": "language/advanced-attributes.html#adv-attr-disallowedReferences",
-        "adv-attr-disallowedRequisites": "language/advanced-attributes.html#adv-attr-disallowedRequisites",
-        "adv-attr-exportReferencesGraph": "language/advanced-attributes.html#adv-attr-exportReferencesGraph",
-        "adv-attr-impureEnvVars": "language/advanced-attributes.html#adv-attr-impureEnvVars",
-        "adv-attr-outputHash": "language/advanced-attributes.html#adv-attr-outputHash",
-        "adv-attr-outputHashAlgo": "language/advanced-attributes.html#adv-attr-outputHashAlgo",
-        "adv-attr-outputHashMode": "language/advanced-attributes.html#adv-attr-outputHashMode",
-        "adv-attr-passAsFile": "language/advanced-attributes.html#adv-attr-passAsFile",
-        "adv-attr-preferLocalBuild": "language/advanced-attributes.html#adv-attr-preferLocalBuild",
-        "fixed-output-drvs": "language/advanced-attributes.html#adv-attr-outputHash",
-        "sec-advanced-attributes": "language/advanced-attributes.html",
-        "builtin-abort": "language/builtins.html#builtins-abort",
-        "builtin-add": "language/builtins.html#builtins-add",
-        "builtin-all": "language/builtins.html#builtins-all",
-        "builtin-any": "language/builtins.html#builtins-any",
-        "builtin-attrNames": "language/builtins.html#builtins-attrNames",
-        "builtin-attrValues": "language/builtins.html#builtins-attrValues",
-        "builtin-baseNameOf": "language/builtins.html#builtins-baseNameOf",
-        "builtin-bitAnd": "language/builtins.html#builtins-bitAnd",
-        "builtin-bitOr": "language/builtins.html#builtins-bitOr",
-        "builtin-bitXor": "language/builtins.html#builtins-bitXor",
-        "builtin-builtins": "language/builtins.html#builtins-builtins",
-        "builtin-compareVersions": "language/builtins.html#builtins-compareVersions",
-        "builtin-concatLists": "language/builtins.html#builtins-concatLists",
-        "builtin-concatStringsSep": "language/builtins.html#builtins-concatStringsSep",
-        "builtin-currentSystem": "language/builtins.html#builtins-currentSystem",
-        "builtin-deepSeq": "language/builtins.html#builtins-deepSeq",
-        "builtin-derivation": "language/builtins.html#builtins-derivation",
-        "builtin-dirOf": "language/builtins.html#builtins-dirOf",
-        "builtin-div": "language/builtins.html#builtins-div",
-        "builtin-elem": "language/builtins.html#builtins-elem",
-        "builtin-elemAt": "language/builtins.html#builtins-elemAt",
-        "builtin-fetchGit": "language/builtins.html#builtins-fetchGit",
-        "builtin-fetchTarball": "language/builtins.html#builtins-fetchTarball",
-        "builtin-fetchurl": "language/builtins.html#builtins-fetchurl",
-        "builtin-filterSource": "language/builtins.html#builtins-filterSource",
-        "builtin-foldl-prime": "language/builtins.html#builtins-foldl'",
-        "builtin-fromJSON": "language/builtins.html#builtins-fromJSON",
-        "builtin-functionArgs": "language/builtins.html#builtins-functionArgs",
-        "builtin-genList": "language/builtins.html#builtins-genList",
-        "builtin-getAttr": "language/builtins.html#builtins-getAttr",
-        "builtin-getEnv": "language/builtins.html#builtins-getEnv",
-        "builtin-hasAttr": "language/builtins.html#builtins-hasAttr",
-        "builtin-hashFile": "language/builtins.html#builtins-hashFile",
-        "builtin-hashString": "language/builtins.html#builtins-hashString",
-        "builtin-head": "language/builtins.html#builtins-head",
-        "builtin-import": "language/builtins.html#builtins-import",
-        "builtin-intersectAttrs": "language/builtins.html#builtins-intersectAttrs",
-        "builtin-isAttrs": "language/builtins.html#builtins-isAttrs",
-        "builtin-isBool": "language/builtins.html#builtins-isBool",
-        "builtin-isFloat": "language/builtins.html#builtins-isFloat",
-        "builtin-isFunction": "language/builtins.html#builtins-isFunction",
-        "builtin-isInt": "language/builtins.html#builtins-isInt",
-        "builtin-isList": "language/builtins.html#builtins-isList",
-        "builtin-isNull": "language/builtins.html#builtins-isNull",
-        "builtin-isString": "language/builtins.html#builtins-isString",
-        "builtin-length": "language/builtins.html#builtins-length",
-        "builtin-lessThan": "language/builtins.html#builtins-lessThan",
-        "builtin-listToAttrs": "language/builtins.html#builtins-listToAttrs",
-        "builtin-map": "language/builtins.html#builtins-map",
-        "builtin-match": "language/builtins.html#builtins-match",
-        "builtin-mul": "language/builtins.html#builtins-mul",
-        "builtin-parseDrvName": "language/builtins.html#builtins-parseDrvName",
-        "builtin-path": "language/builtins.html#builtins-path",
-        "builtin-pathExists": "language/builtins.html#builtins-pathExists",
-        "builtin-placeholder": "language/builtins.html#builtins-placeholder",
-        "builtin-readDir": "language/builtins.html#builtins-readDir",
-        "builtin-readFile": "language/builtins.html#builtins-readFile",
-        "builtin-removeAttrs": "language/builtins.html#builtins-removeAttrs",
-        "builtin-replaceStrings": "language/builtins.html#builtins-replaceStrings",
-        "builtin-seq": "language/builtins.html#builtins-seq",
-        "builtin-sort": "language/builtins.html#builtins-sort",
-        "builtin-split": "language/builtins.html#builtins-split",
-        "builtin-splitVersion": "language/builtins.html#builtins-splitVersion",
-        "builtin-stringLength": "language/builtins.html#builtins-stringLength",
-        "builtin-sub": "language/builtins.html#builtins-sub",
-        "builtin-substring": "language/builtins.html#builtins-substring",
-        "builtin-tail": "language/builtins.html#builtins-tail",
-        "builtin-throw": "language/builtins.html#builtins-throw",
-        "builtin-toFile": "language/builtins.html#builtins-toFile",
-        "builtin-toJSON": "language/builtins.html#builtins-toJSON",
-        "builtin-toPath": "language/builtins.html#builtins-toPath",
-        "builtin-toString": "language/builtins.html#builtins-toString",
-        "builtin-toXML": "language/builtins.html#builtins-toXML",
-        "builtin-trace": "language/builtins.html#builtins-trace",
-        "builtin-tryEval": "language/builtins.html#builtins-tryEval",
-        "builtin-typeOf": "language/builtins.html#builtins-typeOf",
-        "ssec-builtins": "language/builtins.html",
-        "attr-system": "language/derivations.html#attr-system",
-        "ssec-derivation": "language/derivations.html",
-        "ch-expression-language": "language/index.html",
-        "sec-constructs": "language/syntax.html",
-        "sect-let-language": "language/syntax.html#let-expressions",
-        "ss-functions": "language/syntax.html#functions",
-        "sec-language-operators": "language/operators.html",
-        "table-operators": "language/operators.html",
-        "ssec-values": "language/types.html",
-        "gloss-closure": "glossary.html#gloss-closure",
-        "gloss-derivation": "glossary.html#gloss-derivation",
-        "gloss-deriver": "glossary.html#gloss-deriver",
-        "gloss-nar": "glossary.html#gloss-nar",
-        "gloss-output-path": "glossary.html#gloss-output-path",
-        "gloss-profile": "glossary.html#gloss-profile",
-        "gloss-reachable": "glossary.html#gloss-reachable",
-        "gloss-reference": "glossary.html#gloss-reference",
-        "gloss-substitute": "glossary.html#gloss-substitute",
-        "gloss-user-env": "glossary.html#gloss-user-env",
-        "gloss-validity": "glossary.html#gloss-validity",
-        "part-glossary": "glossary.html",
-        "sec-building-source": "installation/building-source.html",
-        "ch-env-variables": "installation/env-variables.html",
-        "sec-installer-proxy-settings": "installation/env-variables.html#proxy-environment-variables",
-        "sec-nix-ssl-cert-file": "installation/env-variables.html#nix_ssl_cert_file",
-        "sec-nix-ssl-cert-file-with-nix-daemon-and-macos": "installation/env-variables.html#nix_ssl_cert_file",
-        "chap-installation": "installation/index.html",
-        "ch-installing-binary": "installation/installing-binary.html",
-        "sect-macos-installation": "installation/installing-binary.html#macos-installation",
-        "sect-macos-installation-change-store-prefix": "installation/installing-binary.html#macos-installation",
-        "sect-macos-installation-encrypted-volume": "installation/installing-binary.html#macos-installation",
-        "sect-macos-installation-recommended-notes": "installation/installing-binary.html#macos-installation",
-        "sect-macos-installation-symlink": "installation/installing-binary.html#macos-installation",
-        "sect-multi-user-installation": "installation/installing-binary.html#multi-user-installation",
-        "sect-nix-install-binary-tarball": "installation/installing-binary.html#installing-from-a-binary-tarball",
-        "sect-nix-install-pinned-version-url":
-            "installation/installing-binary.html#installing-a-pinned-nix-version-from-a-url",
-        "sect-single-user-installation": "installation/installing-binary.html#single-user-installation",
-        "ch-installing-source": "installation/installing-source.html",
-        "ssec-multi-user": "installation/multi-user.html",
-        "ch-nix-security": "installation/nix-security.html",
-        "sec-obtaining-source": "installation/obtaining-source.html",
-        "sec-prerequisites-source": "installation/prerequisites-source.html",
-        "sec-single-user": "installation/single-user.html",
-        "ch-supported-platforms": "installation/supported-platforms.html",
-        "ch-upgrading-nix": "installation/upgrading.html",
-        "ch-about-nix": "introduction.html",
-        "chap-introduction": "introduction.html",
-        "ch-basic-package-mgmt": "package-management/index.html",
-        "ssec-binary-cache-substituter": "package-management/binary-cache-substituter.html",
-        "sec-channels": "command-ref/nix-channel.html",
-        "ssec-copy-closure": "command-ref/nix-copy-closure.html",
-        "sec-garbage-collection": "package-management/garbage-collection.html",
-        "ssec-gc-roots": "package-management/garbage-collector-roots.html",
-        "chap-package-management": "package-management/index.html",
-        "sec-profiles": "package-management/profiles.html",
-        "ssec-s3-substituter": "store/types/s3-binary-cache-store.html",
-        "ssec-s3-substituter-anonymous-reads":
-            "store/types/s3-binary-cache-store.html#anonymous-reads-to-your-s3-compatible-binary-cache",
-        "ssec-s3-substituter-authenticated-reads":
-            "store/types/s3-binary-cache-store.html#authenticated-reads-to-your-s3-binary-cache",
-        "ssec-s3-substituter-authenticated-writes":
-            "store/types/s3-binary-cache-store.html#authenticated-writes-to-your-s3-compatible-binary-cache",
-        "sec-sharing-packages": "package-management/sharing-packages.html",
-        "ssec-ssh-substituter": "package-management/ssh-substituter.html",
-        "chap-quick-start": "quick-start.html",
-        "sec-relnotes": "release-notes/index.html",
-        "ch-relnotes-0.10.1": "release-notes/rl-0.10.1.html",
-        "ch-relnotes-0.10": "release-notes/rl-0.10.html",
-        "ssec-relnotes-0.11": "release-notes/rl-0.11.html",
-        "ssec-relnotes-0.12": "release-notes/rl-0.12.html",
-        "ssec-relnotes-0.13": "release-notes/rl-0.13.html",
-        "ssec-relnotes-0.14": "release-notes/rl-0.14.html",
-        "ssec-relnotes-0.15": "release-notes/rl-0.15.html",
-        "ssec-relnotes-0.16": "release-notes/rl-0.16.html",
-        "ch-relnotes-0.5": "release-notes/rl-0.5.html",
-        "ch-relnotes-0.6": "release-notes/rl-0.6.html",
-        "ch-relnotes-0.7": "release-notes/rl-0.7.html",
-        "ch-relnotes-0.8.1": "release-notes/rl-0.8.1.html",
-        "ch-relnotes-0.8": "release-notes/rl-0.8.html",
-        "ch-relnotes-0.9.1": "release-notes/rl-0.9.1.html",
-        "ch-relnotes-0.9.2": "release-notes/rl-0.9.2.html",
-        "ch-relnotes-0.9": "release-notes/rl-0.9.html",
-        "ssec-relnotes-1.0": "release-notes/rl-1.0.html",
-        "ssec-relnotes-1.1": "release-notes/rl-1.1.html",
-        "ssec-relnotes-1.10": "release-notes/rl-1.10.html",
-        "ssec-relnotes-1.11.10": "release-notes/rl-1.11.10.html",
-        "ssec-relnotes-1.11": "release-notes/rl-1.11.html",
-        "ssec-relnotes-1.2": "release-notes/rl-1.2.html",
-        "ssec-relnotes-1.3": "release-notes/rl-1.3.html",
-        "ssec-relnotes-1.4": "release-notes/rl-1.4.html",
-        "ssec-relnotes-1.5.1": "release-notes/rl-1.5.html",
-        "ssec-relnotes-1.5.2": "release-notes/rl-1.5.2.html",
-        "ssec-relnotes-1.5": "release-notes/rl-1.5.html",
-        "ssec-relnotes-1.6.1": "release-notes/rl-1.6.1.html",
-        "ssec-relnotes-1.6.0": "release-notes/rl-1.6.html",
-        "ssec-relnotes-1.7": "release-notes/rl-1.7.html",
-        "ssec-relnotes-1.8": "release-notes/rl-1.8.html",
-        "ssec-relnotes-1.9": "release-notes/rl-1.9.html",
-        "ssec-relnotes-2.0": "release-notes/rl-2.0.html",
-        "ssec-relnotes-2.1": "release-notes/rl-2.1.html",
-        "ssec-relnotes-2.2": "release-notes/rl-2.2.html",
-        "ssec-relnotes-2.3": "release-notes/rl-2.3.html"
-    },
-    "language/types.html": {
-        "simple-values": "#primitives",
-        "lists": "#type-list",
-        "strings": "#type-string",
-        "attribute-sets": "#type-attrs",
-        "type-number": "#type-int"
-    },
-    "language/syntax.html": {
-        "scoping-rules": "scope.html",
-        "string-literal": "string-literals.html"
-    },
-    "language/derivations.html": {
-        "builder-execution": "../store/building.html#builder-execution"
-    },
-    "installation/installing-binary.html": {
-        "linux": "uninstall.html#linux",
-        "macos": "uninstall.html#macos",
-        "uninstalling": "uninstall.html"
-    },
-    "development/building.html": {
-        "nix-with-flakes": "#building-nix-with-flakes",
-        "classic-nix": "#building-nix",
-        "running-tests": "testing.html#running-tests",
-        "unit-tests": "testing.html#unit-tests",
-        "functional-tests": "testing.html#functional-tests",
-        "debugging-failing-functional-tests": "testing.html#debugging-failing-functional-tests",
-        "integration-tests": "testing.html#integration-tests",
-        "installer-tests": "testing.html#installer-tests",
-        "one-time-setup": "testing.html#one-time-setup",
-        "using-the-ci-generated-installer-for-manual-testing":
-            "testing.html#using-the-ci-generated-installer-for-manual-testing",
-        "characterization-testing": "testing.html#characterisation-testing-unit",
-        "add-a-release-note": "contributing.html#add-a-release-note",
-        "add-an-entry": "contributing.html#add-an-entry",
-        "build-process": "contributing.html#build-process",
-        "reverting": "contributing.html#reverting",
-        "branches": "contributing.html#branches"
-    },
-    "glossary.html": {
-        "gloss-local-store": "store/types/local-store.html",
-        "package-attribute-set": "#package",
-        "gloss-chroot-store": "store/types/local-store.html",
-        "gloss-content-addressed-derivation": "#gloss-content-addressing-derivation"
-    }
-}

doc/manual/render-manpage.sh

@@ -1,55 +1,25 @@
 #!/usr/bin/env bash
-#
-# Standalone manpage renderer that doesn't require mdbook.
-# Uses expand-includes.py to preprocess markdown, then lowdown to generate manpages.
 
 set -euo pipefail
 
-script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-
 lowdown_args=
 
-# Optional --out-no-smarty flag for compatibility with nix_nested_manpages
 if [ "$1" = --out-no-smarty ]; then
     lowdown_args=--out-no-smarty
     shift
 fi
 
-[ "$#" = 7 ] || {
-    cat >&2 <<EOF
-Usage: $0 [--out-no-smarty] <title> <section> <source-root> <generated-root> <doc-url> <infile> <outfile>
-
-Arguments:
-  title           - Manpage title (e.g., "nix-env --install")
-  section         - Manpage section number (1, 5, 8, etc.)
-  source-root     - Root directory of markdown sources
-  generated-root  - Root directory of generated markdown files
-  doc-url         - Base URL for documentation links
-  infile          - Input markdown file (relative to build directory)
-  outfile         - Output manpage file
-
-Examples:
-  $0 "nix-store --query" 1 doc/manual/source build/doc/manual/source \\
-     https://nix.dev/manual/nix/latest \\
-     build/doc/manual/source/command-ref/nix-store/query.md nix-store-query.1
-EOF
+[ "$#" = 4 ] || {
+    echo "wrong number of args passed" >&2
     exit 1
 }
 
 title="$1"
 section="$2"
-source_root="$3"
-generated_root="$4"
-doc_url="$5"
-infile="$6"
-outfile="$7"
+infile="$3"
+outfile="$4"
 
-# Expand includes and pipe to lowdown
 (
     printf "Title: %s\n\n" "$title"
-    python3 "$script_dir/expand-includes.py" \
-        --source-root "$source_root" \
-        --generated-root "$generated_root" \
-        --doc-url "$doc_url" \
-        "$infile"
+    cat "$infile"
 ) | lowdown -sT man --nroff-nolinks $lowdown_args -M section="$section" -o "$outfile"

doc/manual/rl-next/add-nix-state-home.md

@@ -0,0 +1,14 @@
+---
+synopsis: Use envvars NIX_CACHE_HOME, NIX_CONFIG_HOME, NIX_DATA_HOME, NIX_STATE_HOME if defined
+prs: [11351]
+---
+
+Added new environment variables:
+
+- `NIX_CACHE_HOME`
+- `NIX_CONFIG_HOME`
+- `NIX_DATA_HOME`
+- `NIX_STATE_HOME`
+
+Each, if defined, takes precedence over the corresponding [XDG environment variable](@docroot@/command-ref/env-common.md#xdg-base-directories).
+This provides more fine-grained control over where Nix looks for files, and allows to have a stand-alone Nix environment, which only uses files in a specific directory, and doesn't interfere with the user environment.

doc/manual/rl-next/ban-integer-overflow.md

@@ -0,0 +1,21 @@
+---
+synopsis: Define integer overflow in the Nix language as an error
+issues: [10968]
+prs: [11188]
+---
+
+Previously, integer overflow in the Nix language invoked C++ level signed overflow, which was undefined behaviour, but *usually* manifested as wrapping around on overflow.
+
+Since prior to the public release of Lix, Lix had C++ signed overflow defined to crash the process and nobody noticed this having accidentally removed overflow from the Nix language for three months until it was caught by fiddling around.
+Given the significant body of actual Nix code that has been evaluated by Lix in that time, it does not appear that nixpkgs or much of importance depends on integer overflow, so it appears safe to turn into an error.
+
+Some other overflows were fixed:
+- `builtins.fromJSON` of values greater than the maximum representable value in a signed 64-bit integer will generate an error.
+- `nixConfig` in flakes will no longer accept negative values for configuration options.
+
+Integer overflow now looks like the following:
+
+```
+$ nix eval --expr '9223372036854775807 + 1'
+error: integer overflow in adding 9223372036854775807 + 1
+```

doc/manual/rl-next/beta-installer

@@ -1,29 +0,0 @@
----
-synopsis: "Rust nix-installer in beta"
-prs: []
----
-
-The Rust-based rewrite of the Nix installer is now in beta.
-We'd love help testing it out!
-
-To test out the new installer, run:
-```
-curl -sSfL https://artifacts.nixos.org/nix-installer | sh -s -- install
-```
-
-This installer can be run even when you have an existing, script-based Nix installation without any adjustments.
-
-This new installer also comes with the ability to uninstall your Nix installation; run:
-```
-/nix/nix-installer uninstall
-```
-
-This will get rid of your entire Nix installation (even if you installed over an existing, script-based installation).
-
-This installer is a modified version of the [Determinate Nix Installer](https://github.com/DeterminateSystems/nix-installer) by Determinate Systems.
-Thanks to Determinate Systems for all the investment they've put into the installer.
-
-Source for the installer is in https://github.com/NixOS/nix-installer.
-Report any issues in that repo.
-
-For CI usage, a GitHub Action to install Nix using this installer is available at https://github.com/NixOS/nix-installer-action.

doc/manual/rl-next/build-hook-default.md

@@ -0,0 +1,22 @@
+---
+synopsis: |-
+  The `build-hook` setting's default is less useful when using `libnixstore` as a library
+prs:
+- 11178
+---
+
+*This is an obscure issue that only affects usage of the `libnixstore` library outside of the Nix executable.*
+
+As part the ongoing [rewrite of the build system](https://github.com/NixOS/nix/issues/2503) to use [Meson](https://mesonbuild.com/), we are also switching to packaging individual Nix components separately (and building them in separate derivations).
+This means that when building `libnixstore` we do not know where the Nix binaries will be installed --- `libnixstore` doesn't know about downstream consumers like the Nix binaries at all.
+
+*This is also unrelated to the _`post`_-`build-hook`*, which is often used for pushing to a cache.*
+
+This has a small adverse affect on remote building --- the `build-remote` executable that is specified from the [`build-hook`](@docroot@/command-ref/conf-file.md#conf-build-hook) setting will not be gotten from the (presumed) installation location, but instead looked up on the `PATH`.
+This means that other applications linking `libnixstore` that wish to use remote building must arrange for the `nix` command to be on the PATH (or manually overriding `build-hook`) in order for that to work.
+
+Long term we don't envision this being a downside, because we plan to [get rid of `build-remote` and the build hook setting entirely](https://github.com/NixOS/nix/issues/1221).
+There should simply be no need to have an extra, intermediate layer of remote-procedure-calling when we want to connect to a remote builder.
+The build hook protocol did in principle support custom ways of remote building, but that can also be accomplished with a custom service for the ssh or daemon/ssh-ng protocols, or with a custom [store type](@docroot@/store/types/index.md) i.e. `Store` subclass. <!-- we normally don't mention classes, but consider that this release note is about a library use case -->
+
+The Perl bindings no longer expose `getBinDir` either, since the underlying C++ libraries those bindings wrap no longer know the location of installed binaries as described above.

doc/manual/rl-next/c-api-new-store-methods.md

@@ -1,9 +0,0 @@
----
-synopsis: "C API: New store API methods"
-prs: [14766]
----
-
-The C API now includes additional methods:
-
-- `nix_store_query_path_from_hash_part()` - Get the full store path given its hash part
-- `nix_store_copy_path()` - Copy a single store path between two stores, allows repairs and configuring signature checking

doc/manual/rl-next/filesystem-errors.md

@@ -0,0 +1,14 @@
+---
+synopsis: wrap filesystem exceptions more correctly
+issues: []
+prs: [11378]
+---
+
+
+With the switch to `std::filesystem` in different places, Nix started to throw `std::filesystem::filesystem_error` in many places instead of its own exceptions.
+
+This lead to no longer generating error traces, for example when listing a non-existing directory, and can also lead to crashes inside the Nix REPL.
+
+This version catches these types of exception correctly and wrap them into Nix's own exeception type.
+
+Author: [**@Mic92**](https://github.com/Mic92)

doc/manual/rl-next/fsync-store-paths.md

@@ -0,0 +1,9 @@
+---
+synopsis: Add setting `fsync-store-paths`
+issues: [1218]
+prs: [7126]
+---
+
+Nix now has a setting `fsync-store-paths` that ensures that new store paths are durably written to disk before they are registered as "valid" in Nix's database. This can prevent Nix store corruption if the system crashes or there is a power loss. This setting defaults to `false`.
+
+Author: [**@squalus**](https://github.com/squalus)

doc/manual/rl-next/getflake-path.md

@@ -1,6 +0,0 @@
----
-synopsis: "`builtins.getFlake` now supports path values"
-prs: [15290]
----
-
-`builtins.getFlake` now accepts path values in addition to flakerefs, allowing you to write `builtins.getFlake ./subflake` instead of having to use ugly workarounds to construct a pure flakeref.

doc/manual/rl-next/ignore-gc-delete-failure.md

@@ -1,10 +0,0 @@
----
-synopsis: "New setting `ignore-gc-delete-failure` for local stores"
-prs: [15054]
----
-
-A new local store setting [`ignore-gc-delete-failure`](@docroot@/store/types/local-store.md#store-local-store-ignore-gc-delete-failure) has been added.
-When enabled, garbage collection will log warnings instead of failing when it cannot delete store paths.
-This is useful when running Nix as an unprivileged user that may not have write access to all paths in the store.
-
-This setting is experimental and requires the [`local-overlay-store`](@docroot@/development/experimental-features.md#xp-feature-local-overlay-store) experimental feature.

doc/manual/rl-next/mtls-substituter.md

@@ -1,15 +0,0 @@
----
-synopsis: Support HTTPS binary caches using mTLS (client certificate) authentication
-issues: [13002]
-prs: [13030]
----
-
-Added support for `tls-certificate` and `tls-private-key` options in substituter URLs.
-
-Example:
-
-```
-https://substituter.invalid?tls-certificate=/path/to/cert.pem&tls-private-key=/path/to/key.pem
-```
-
-When these options are configured, Nix will use this certificate/private key pair to authenticate to the server.

doc/manual/rl-next/nix-flake-show-description.md

@@ -0,0 +1,25 @@
+---
+synopsis: Show package descriptions with `nix flake show`
+issues: [10977]
+prs: [10980]
+---
+
+`nix flake show` will now display a package's `meta.description` if it exists. If the description does not fit in the terminal it will be truncated to fit the terminal width. If the size of the terminal width is unknown the description will be capped at 80 characters.
+
+```
+$ nix flake show
+└───packages
+    └───x86_64-linux
+        ├───builderImage: package 'docker-image-ara-builder-image.tar.gz' - 'Docker image hosting the nix build environment'
+        └───runnerImage: package 'docker-image-gitlab-runner.tar.gz' - 'Docker image hosting the gitlab-runner executable'
+```
+
+In a narrower terminal:
+
+```
+$ nix flake show
+└───packages
+    └───x86_64-linux
+        ├───builderImage: package 'docker-image-ara-builder-image.tar.gz' - 'Docker image hosting the nix b...
+        └───runnerImage: package 'docker-image-gitlab-runner.tar.gz' - 'Docker image hosting the gitlab-run...
+```

doc/manual/rl-next/nix-fmt-default-argument.md

@@ -0,0 +1,17 @@
+---
+synopsis: Removing the default argument passed to the `nix fmt` formatter
+issues: []
+prs: [11438]
+---
+
+The underlying formatter no longer receives the ". " default argument when `nix fmt` is called with no arguments.
+
+This change was necessary as the formatter wasn't able to distinguish between
+a user wanting to format the current folder with `nix fmt .` or the generic
+`nix fmt`.
+
+The default behaviour is now the responsibility of the formatter itself, and
+allows tools such as treefmt to format the whole tree instead of only the
+current directory and below.
+
+Author: [**@zimbatm**](https://github.com/zimbatm)

doc/manual/rl-next/no-flake-substitution.md

@@ -0,0 +1,8 @@
+---
+synopsis: Flakes are no longer substituted
+prs: [10612]
+---
+
+Nix will no longer attempt to substitute the source code of flakes from a binary cache. This functionality was broken because it could lead to different evaluation results depending on whether the flake was available in the binary cache, or even depending on whether the flake was already in the local store.
+
+Author: [**@edolstra**](https://github.com/edolstra)

doc/manual/rl-next/roots-daemon.md

@@ -1,11 +0,0 @@
----
-synopsis: New command `nix store roots-daemon` for serving GC roots
-prs: [15143]
----
-
-New command [`nix store roots-daemon`](@docroot@/command-ref/new-cli/nix3-store-roots-daemon.md) runs a daemon that serves garbage collector roots over a Unix domain socket.
-It enables the garbage collector to discover runtime roots when the main Nix daemon doesn't have `CAP_SYS_PTRACE` capability and therefore cannot scan `/proc`.
-
-The garbage collector can be configured to use this daemon via the [`use-roots-daemon`](@docroot@/store/types/local-store.md#store-experimental-option-use-roots-daemon) store setting.
-
-This feature requires the [`local-overlay-store` experimental feature](@docroot@/development/experimental-features.md#xp-feature-local-overlay-store).

doc/manual/rl-next/s3-virtual-hosted-style.md

@@ -1,32 +0,0 @@
----
-synopsis: S3 binary caches now use virtual-hosted-style addressing by default
-issues: [15208]
----
-
-S3 binary caches now use virtual-hosted-style URLs
-(`https://bucket.s3.region.amazonaws.com/key`) instead of path-style URLs
-(`https://s3.region.amazonaws.com/bucket/key`) when connecting to standard AWS
-S3 endpoints. This enables HTTP/2 multiplexing and fixes TCP connection
-exhaustion (TIME_WAIT socket accumulation) under high-concurrency workloads.
-
-A new `addressing-style` store option controls this behavior:
-
-- `auto` (default): virtual-hosted-style for standard AWS endpoints, path-style
-  for custom endpoints.
-- `path`: forces path-style addressing (deprecated by AWS).
-- `virtual`: forces virtual-hosted-style addressing (bucket names must not
-  contain dots).
-
-Bucket names containing dots (e.g., `my.bucket.name`) automatically fall back
-to path-style addressing in `auto` mode, because dotted names create
-multi-level subdomains that break TLS wildcard certificate validation.
-
-Example using path-style for backwards compatibility:
-
-```
-s3://my-bucket/key?region=us-east-1&addressing-style=path
-```
-
-Additionally, TCP keep-alive is now enabled on all HTTP connections, preventing
-idle connections from being silently dropped by intermediate network devices
-(NATs, firewalls, load balancers).

doc/manual/rl-next/verify-tls.md

@@ -0,0 +1,8 @@
+---
+synopsis: "`<nix/fetchurl.nix>` uses TLS verification"
+prs: [11585]
+---
+
+Previously `<nix/fetchurl.nix>` did not do TLS verification. This was because the Nix sandbox in the past did not have access to TLS certificates, and Nix checks the hash of the fetched file anyway. However, this can expose authentication data from `netrc` and URLs to man-in-the-middle attackers. In addition, Nix now in some cases (such as when using impure derivations) does *not* check the hash. Therefore we have now enabled TLS verification. This means that downloads by `<nix/fetchurl.nix>` will now fail if you're fetching from a HTTPS server that does not have a valid certificate.
+
+`<nix/fetchurl.nix>` is also known as the builtin derivation builder `builtin:fetchurl`. It's not to be confused with the evaluation-time function `builtins.fetchurl`, which was not affected by this issue.

doc/manual/source/advanced-topics/distributed-builds.md

@@ -1,110 +0,0 @@
-# Remote Builds
-
-A local Nix installation can forward Nix builds to other machines,
-this allows multiple builds to be performed in parallel.
-
-Remote builds also allow Nix to perform multi-platform builds in a
-semi-transparent way. For example, if you perform a build for a
-`x86_64-darwin` on an `i686-linux` machine, Nix can automatically
-forward the build to a `x86_64-darwin` machine, if one is available.
-
-## Requirements
-
-For a local machine to forward a build to a remote machine, the remote machine must:
-
-- Have Nix installed
-- Be running an SSH server, e.g. `sshd`
-- Be accessible via SSH from the local machine over the network
-- Have the local machine's public SSH key in `/etc/ssh/authorized_keys.d/<username>`
-- Have the username of the SSH user in the `trusted-users` setting in `nix.conf`
-
-## Testing
-
-To test connecting to a remote [Nix instance] (in this case `mac`), run:
-
-```console
-nix store info --store ssh://username@mac
-```
-
-To specify an SSH identity file as part of the remote store URI add a
-query parameter, e.g.
-
-```console
-nix store info --store ssh://username@mac?ssh-key=/home/alice/my-key
-```
-
-Since builds should be non-interactive, the key should not have a
-passphrase. Alternatively, you can load identities ahead of time into
-`ssh-agent` or `gpg-agent`.
-
-In a multi-user installation (default), builds are executed by the Nix
-Daemon. The Nix Daemon cannot prompt for a passphrase via the terminal
-or `ssh-agent`, so the SSH key must not have a passphrase.
-
-In addition, the Nix Daemon's user (typically root) needs to have SSH
-access to the remote builder.
-
-Access can be verified by running `sudo su`, and then validating SSH
-access, e.g. by running `ssh mac`. SSH identity files for root users
-are usually stored in `/root/.ssh/` (Linux) or `/var/root/.ssh` (MacOS).
-
-If you get the error
-
-```console
-bash: nix: command not found
-error: cannot connect to 'mac'
-```
-
-then you need to ensure that the `PATH` of non-interactive login shells
-contains Nix.
-
-The [list of remote build machines](@docroot@/command-ref/conf-file.md#conf-builders) can be specified on the command line or in the Nix configuration file.
-For example, the following command allows you to build a derivation for `x86_64-darwin` on a Linux machine:
-
-```console
-uname
-```
-
-```console
-Linux
-```
-
-```console
-nix build --impure \
- --expr '(with import <nixpkgs> { system = "x86_64-darwin"; }; runCommand "foo" {} "uname > $out")' \
- --builders 'ssh://mac x86_64-darwin'
-```
-
-```console
-[1/0/1 built, 0.0 MiB DL] building foo on ssh://mac
-```
-
-```console
-cat ./result
-```
-
-```console
-Darwin
-```
-
-It is possible to specify multiple build machines separated by a semicolon or a newline, e.g.
-
-```console
-  --builders 'ssh://mac x86_64-darwin ; ssh://beastie x86_64-freebsd'
-```
-
-Remote build machines can also be configured in [`nix.conf`](@docroot@/command-ref/conf-file.md), e.g.
-
-    builders = ssh://mac x86_64-darwin ; ssh://beastie x86_64-freebsd
-
-After making changes to `nix.conf`, restart the Nix daemon for changes to take effect.
-
-Finally, remote build machines can be configured in a separate configuration
-file included in `builders` via the syntax `@/path/to/file`. For example,
-
-    builders = @/etc/nix/machines
-
-causes the list of machines in `/etc/nix/machines` to be included.
-(This is the default.)
-
-[Nix instance]: @docroot@/glossary.md#gloss-nix-instance

doc/manual/source/advanced-topics/eval-profiler.md

@@ -1,33 +0,0 @@
-# Using the `eval-profiler`
-
-Nix evaluator supports [evaluation](@docroot@/language/evaluation.md)
-[profiling](<https://en.wikipedia.org/wiki/Profiling_(computer_programming)>)
-compatible with `flamegraph.pl`. The profiler samples the nix
-function call stack at regular intervals. It can be enabled with the
-[`eval-profiler`](@docroot@/command-ref/conf-file.md#conf-eval-profiler)
-setting:
-
-```console
-$ nix-instantiate "<nixpkgs>" -A hello --eval-profiler flamegraph
-```
-
-Stack sampling frequency and the output file path can be configured with
-[`eval-profile-file`](@docroot@/command-ref/conf-file.md#conf-eval-profile-file)
-and [`eval-profiler-frequency`](@docroot@/command-ref/conf-file.md#conf-eval-profiler-frequency).
-By default the collected profile is saved to `nix.profile` file in the current working directory.
-
-The collected profile can be directly consumed by `flamegraph.pl`:
-
-```console
-$ flamegraph.pl nix.profile > flamegraph.svg
-```
-
-The line information in the profile contains the location of the [call
-site](https://en.wikipedia.org/wiki/Call_site) position and the name of the
-function being called (when available). For example:
-
-```
-/nix/store/2q71fdvr4h33g9832hiriwnf20fn630l-source/pkgs/top-level/default.nix:167:5:primop import
-```
-
-Here `import` primop is called at `/nix/store/2q71fdvr4h33g9832hiriwnf20fn630l-source/pkgs/top-level/default.nix:167:5`.

doc/manual/source/command-ref/files/profiles.md

@@ -1,74 +0,0 @@
-## Profiles
-
-A directory that contains links to profiles managed by [`nix-env`] and [`nix profile`]:
-
-- `$XDG_STATE_HOME/nix/profiles` for regular users
-- `$NIX_STATE_DIR/profiles/per-user/root` if the user is `root`
-
-A profile is a directory of symlinks to files in the Nix store.
-
-### Filesystem layout
-
-Profiles are versioned as follows. When using a profile named *path*, *path* is a symlink to *path*`-`*N*`-link`, where *N* is the version of the profile.
-In turn, *path*`-`*N*`-link` is a symlink to a path in the Nix store.
-For example:
-
-```console
-$ ls -l ~alice/.local/state/nix/profiles/profile*
-lrwxrwxrwx 1 alice users 14 Nov 25 14:35 /home/alice/.local/state/nix/profiles/profile -> profile-7-link
-lrwxrwxrwx 1 alice users 51 Oct 28 16:18 /home/alice/.local/state/nix/profiles/profile-5-link -> /nix/store/q69xad13ghpf7ir87h0b2gd28lafjj1j-profile
-lrwxrwxrwx 1 alice users 51 Oct 29 13:20 /home/alice/.local/state/nix/profiles/profile-6-link -> /nix/store/6bvhpysd7vwz7k3b0pndn7ifi5xr32dg-profile
-lrwxrwxrwx 1 alice users 51 Nov 25 14:35 /home/alice/.local/state/nix/profiles/profile-7-link -> /nix/store/mp0x6xnsg0b8qhswy6riqvimai4gm677-profile
-```
-
-Each of these symlinks is a root for the Nix garbage collector.
-
-The contents of the store path corresponding to each version of the
-profile is a tree of symlinks to the files of the installed packages,
-e.g.
-
-```console
-$ ll -R ~eelco/.local/state/nix/profiles/profile-7-link/
-/home/eelco/.local/state/nix/profiles/profile-7-link/:
-total 20
-dr-xr-xr-x 2 root root 4096 Jan  1  1970 bin
--r--r--r-- 2 root root 1402 Jan  1  1970 manifest.nix
-dr-xr-xr-x 4 root root 4096 Jan  1  1970 share
-
-/home/eelco/.local/state/nix/profiles/profile-7-link/bin:
-total 20
-lrwxrwxrwx 5 root root 79 Jan  1  1970 chromium -> /nix/store/cyxny9d1zjb9l9103fr6j6kavp3bqjxf-chromium-86.0.4240.111/bin/chromium
-lrwxrwxrwx 7 root root 87 Jan  1  1970 spotify -> /nix/store/w9182874m1bl56smps3m5zjj36jhp3rn-spotify-1.1.26.501.gbe11e53b-15/bin/spotify
-lrwxrwxrwx 3 root root 79 Jan  1  1970 zoom-us -> /nix/store/wbhg2ga8f3h87s9h5k0slxk0m81m4cxl-zoom-us-5.3.469451.0927/bin/zoom-us
-
-/home/eelco/.local/state/nix/profiles/profile-7-link/share/applications:
-total 12
-lrwxrwxrwx 4 root root 120 Jan  1  1970 chromium-browser.desktop -> /nix/store/sqzyx2l85i6j2a77pnyvglh3bvzwmjjp-chromium-unwrapped-86.0.4240.111/share/applications/chromium-browser.desktop
-lrwxrwxrwx 7 root root 110 Jan  1  1970 spotify.desktop -> /nix/store/w9182874m1bl56smps3m5zjj36jhp3rn-spotify-1.1.26.501.gbe11e53b-15/share/applications/spotify.desktop
-lrwxrwxrwx 3 root root 107 Jan  1  1970 us.zoom.Zoom.desktop -> /nix/store/wbhg2ga8f3h87s9h5k0slxk0m81m4cxl-zoom-us-5.3.469451.0927/share/applications/us.zoom.Zoom.desktop
-
-…
-```
-
-Each profile version contains a manifest file:
-- [`manifest.nix`](@docroot@/command-ref/files/manifest.nix.md) used by [`nix-env`](@docroot@/command-ref/nix-env.md).
-- [`manifest.json`](@docroot@/command-ref/files/manifest.json.md) used by [`nix profile`](@docroot@/command-ref/new-cli/nix3-profile.md) (experimental).
-
-## User profile link
-
-A symbolic link to the user's current profile:
-
-- `~/.nix-profile`
-- `$XDG_STATE_HOME/nix/profile` if [`use-xdg-base-directories`] is set to `true`.
-
-By default, this symlink points to:
-
-- `$XDG_STATE_HOME/nix/profiles/profile` for regular users
-- `$NIX_STATE_DIR/profiles/per-user/root/profile` for `root`
-
-The `PATH` environment variable should include `/bin` subdirectory of the profile link (e.g. `~/.nix-profile/bin`) for the user environment to be visible to the user.
-The [installer](@docroot@/installation/installing-binary.md) sets this up by default, unless you enable [`use-xdg-base-directories`].
-
-[`nix-env`]: @docroot@/command-ref/nix-env.md
-[`nix profile`]: @docroot@/command-ref/new-cli/nix3-profile.md
-[`use-xdg-base-directories`]: @docroot@/command-ref/conf-file.md#conf-use-xdg-base-directories

doc/manual/source/command-ref/meson.build

@@ -1,56 +0,0 @@
-xp_features_json = custom_target(
-  command : [ nix, '__dump-xp-features' ],
-  capture : true,
-  output : 'xp-features.json',
-  env : nix_env_for_docs,
-)
-
-experimental_features_shortlist_md = custom_target(
-  command : nix_eval_for_docs + [
-    '--expr', 'import @INPUT0@ (builtins.fromJSON (builtins.readFile ./@INPUT1@))',
-  ],
-  input : [
-    '../../generate-xp-features-shortlist.nix',
-    xp_features_json,
-  ],
-  output : 'experimental-features-shortlist.md',
-  capture : true,
-  env : nix_env_for_docs,
-)
-
-nix3_cli_files = custom_target(
-  command : [ python.full_path(), '@INPUT0@', '@OUTPUT@', '--' ] + nix_eval_for_docs + [
-    '--expr', 'import @INPUT1@ true (builtins.readFile ./@INPUT2@)',
-  ],
-  input : [
-    '../../remove_before_wrapper.py',
-    '../../generate-manpage.nix',
-    nix3_cli_json,
-  ],
-  output : 'new-cli',
-  env : nix_env_for_docs,
-)
-
-conf_file_md_body = custom_target(
-  command : [
-    nix_eval_for_docs,
-    '--expr', 'import @INPUT0@ { prefix = "conf"; } (builtins.fromJSON (builtins.readFile ./@INPUT1@))',
-  ],
-  capture : true,
-  input : [
-    '../../generate-settings.nix',
-    conf_file_json,
-  ],
-  output : 'conf-file.body.md',
-  env : nix_env_for_docs,
-)
-
-conf_file_md = custom_target(
-  command : [ 'cat', '@INPUT0@', '@INPUT1@' ],
-  capture : true,
-  input : [
-    'conf-file-prefix.md',
-    conf_file_md_body,
-  ],
-  output : 'conf-file.md',
-)

doc/manual/source/command-ref/nix-env/query.md

@@ -1,236 +0,0 @@
-# Name
-
-`nix-env --query` - display information about packages
-
-# Synopsis
-
-`nix-env` {`--query` | `-q`} *names…*
-  [`--installed` | `--available` | `-a`]
-  [{`--status` | `-s`}]
-  [{`--attr-path` | `-P`}]
-  [`--no-name`]
-  [{`--compare-versions` | `-c`}]
-  [`--system`]
-  [`--drv-path`]
-  [`--out-path`]
-  [`--description`]
-  [`--meta`]
-  [`--xml`]
-  [`--json`]
-  [{`--prebuilt-only` | `-b`}]
-  [{`--attr` | `-A`} *attribute-path*]
-
-# Description
-
-The query operation displays information about either the store paths
-that are installed in the current generation of the active profile
-(`--installed`), or the derivations that are available for installation
-in the active Nix expression (`--available`). It only prints information
-about derivations whose symbolic name matches one of *names*.
-
-The derivations are sorted by their `name` attributes.
-
-# Source selection
-
-The following flags specify the set of things on which the query
-operates.
-
-  - `--installed`
-
-    The query operates on the store paths that are installed in the
-    current generation of the active profile. This is the default.
-
-  - `--available` / `-a`
-
-    The query operates on the derivations that are available in the
-    active Nix expression.
-
-# Queries
-
-The following flags specify what information to display about the
-selected derivations. Multiple flags may be specified, in which case the
-information is shown in the order given here. Note that the name of the
-derivation is shown unless `--no-name` is specified.
-
-  - `--xml`
-
-    Print the result in an XML representation suitable for automatic
-    processing by other tools. The root element is called `items`, which
-    contains a `item` element for each available or installed
-    derivation. The fields discussed below are all stored in attributes
-    of the `item` elements.
-
-  - `--json`
-
-    Print the result in a JSON representation suitable for automatic
-    processing by other tools.
-
-  - `--prebuilt-only` / `-b`
-
-    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.
-
-  - `--status` / `-s`
-
-    Print the *status* of the derivation. The status consists of three
-    characters. The first is `I` or `-`, indicating whether the
-    derivation is currently installed in the current generation of the
-    active profile. This is by definition the case for `--installed`,
-    but not for `--available`. The second is `P` or `-`, indicating
-    whether the derivation is present on the system. This indicates
-    whether installation of an available derivation will require the
-    derivation to be built. The third is `S` or `-`, indicating whether
-    a substitute is available for the derivation.
-
-  - `--attr-path` / `-P`
-
-    Print the *attribute path* of the derivation, which can be used to
-    unambiguously select it using the `--attr` option available in
-    commands that install derivations like `nix-env --install`. This
-    option only works together with `--available`
-
-  - `--no-name`
-
-    Suppress printing of the `name` attribute of each derivation.
-
-  - `--compare-versions` / `-c`
-
-    Compare installed versions to available versions, or vice versa (if
-    `--available` 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:
-
-      - `<` *version*
-
-        A newer version of the package is available or installed.
-
-      - `=` *version*
-
-        At most the same version of the package is available or
-        installed.
-
-      - `>` *version*
-
-        Only older versions of the package are available or installed.
-
-      - `- ?`
-
-        No version of the package is available or installed.
-
-  - `--system`
-
-    Print the `system` attribute of the derivation.
-
-  - `--drv-path`
-
-    Print the [store path] to the [store derivation].
-
-    [store path]: @docroot@/glossary.md#gloss-store-path
-    [store derivation]: @docroot@/glossary.md#gloss-derivation
-
-  - `--out-path`
-
-    Print the output path of the derivation.
-
-  - `--description`
-
-    Print a short (one-line) description of the derivation, if
-    available. The description is taken from the `meta.description`
-    attribute of the derivation.
-
-  - `--meta`
-
-    Print all of the meta-attributes of the derivation. This option is
-    only available with `--xml` or `--json`.
-
-{{#include ./opt-common.md}}
-
-{{#include ../opt-common.md}}
-
-{{#include ./env-common.md}}
-
-{{#include ../env-common.md}}
-
-# Examples
-
-To show installed packages:
-
-```console
-$ nix-env --query
-bison-1.875c
-docbook-xml-4.2
-firefox-1.0.4
-MPlayer-1.0pre7
-ORBit2-2.8.3
-…
-```
-
-To show available packages:
-
-```console
-$ nix-env --query --available
-firefox-1.0.7
-GConf-2.4.0.1
-MPlayer-1.0pre7
-ORBit2-2.8.3
-…
-```
-
-To show the status of available packages:
-
-```console
-$ nix-env --query --available --status
--P- firefox-1.0.7   (not installed but present)
---S GConf-2.4.0.1   (not present, but there is a substitute for fast installation)
---S MPlayer-1.0pre3 (i.e., this is not the installed MPlayer, even though the version is the same!)
-IP- ORBit2-2.8.3    (installed and by definition present)
-…
-```
-
-To show available packages in the Nix expression `foo.nix`:
-
-```console
-$ nix-env --file ./foo.nix --query --available
-foo-1.2.3
-```
-
-To compare installed versions to what’s available:
-
-```console
-$ nix-env --query --compare-versions
-...
-acrobat-reader-7.0 - ?      (package is not available at all)
-autoconf-2.59      = 2.59   (same version)
-firefox-1.0.4      < 1.0.7  (a more recent version is available)
-...
-```
-
-To show all packages with “`zip`” in the name:
-
-```console
-$ nix-env --query --available '.*zip.*'
-bzip2-1.0.6
-gzip-1.6
-zip-3.0
-…
-```
-
-To show all packages with “`firefox`” or “`chromium`” in the name:
-
-```console
-$ nix-env --query --available '.*(firefox|chromium).*'
-chromium-37.0.2062.94
-chromium-beta-38.0.2125.24
-firefox-32.0.3
-firefox-with-plugins-13.0.1
-…
-```
-
-To show all packages in the latest revision of the Nixpkgs repository:
-
-```console
-$ nix-env --file https://github.com/NixOS/nixpkgs/archive/master.tar.gz --query --available
-```
-

doc/manual/source/command-ref/nix-store/query.md

@@ -1,248 +0,0 @@
-# Name
-
-`nix-store --query` - display information about store paths
-
-# Synopsis
-
-`nix-store` {`--query` | `-q`}
-  {`--outputs` | `--requisites` | `-R` | `--references` | `--referrers` |
-  `--referrers-closure` | `--deriver` | `-d` | `--valid-derivers` |
-  `--graph` | `--tree` | `--binding` *name* | `-b` *name* | `--hash` |
-  `--size` | `--roots`}
-  [`--use-output`] [`-u`] [`--force-realise`] [`-f`]
-  *paths…*
-
-# Description
-
-The operation `--query` displays various bits of information about the
-store paths . The queries are described below. At most one query can be
-specified. The default query is `--outputs`.
-
-The paths *paths* may also be symlinks from outside of the Nix store, to
-the Nix store. In that case, the query is applied to the target of the
-symlink.
-
-# Common query options
-
-- `--use-output` / `-u`
-
-  For each argument to the query that is a [store derivation], apply the
-  query to the output path of the derivation instead.
-
-- `--force-realise` / `-f`
-
-  Realise each argument to the query first (see [`nix-store --realise`](./realise.md)).
-
-[store derivation]: @docroot@/glossary.md#gloss-store-derivation
-
-# Queries
-
-- `--outputs`
-
-  Prints out the [output paths] of the store
-  derivations *paths*. These are the paths that will be produced when
-  the derivation is built.
-
-  [output paths]: @docroot@/glossary.md#gloss-output-path
-
-- `--references`
-
-  Prints the set of [references] of the store paths
-  *paths*, that is, their immediate dependencies. (For *all*
-  dependencies, use `--requisites`.)
-
-  [references]: @docroot@/glossary.md#gloss-reference
-
-- `--requisites` / `-R`
-
-  Prints out the set of [*requisites*][requisite] (better known as the [closure]) of the store path *paths*.
-
-  [requisite]: @docroot@/glossary.md#gloss-requisite
-  [closure]: @docroot@/glossary.md#gloss-closure
-
-  This query has one option:
-
-    - `--include-outputs`
-      Also include the existing output paths of [store derivation]s,
-      and their closures.
-
-  This query can be used to implement various kinds of deployment. A
-  *source deployment* is obtained by distributing the closure of a
-  store derivation. A *binary deployment* is obtained by distributing
-  the closure of an output path. A *cache deployment* (combined
-  source/binary deployment, including binaries of build-time-only
-  dependencies) is obtained by distributing the closure of a store
-  derivation and specifying the option `--include-outputs`.
-
-- `--referrers`
-
-  Prints the set of [*referrers*][referrer] of the store paths *paths*, that is,
-  the store paths currently existing in the Nix store that refer to
-  one of *paths*. Note that contrary to the references, the set of
-  referrers is not constant; it can change as store paths are added or
-  removed.
-
-  [referrer]: @docroot@/glossary.md#gloss-referrer
-
-- `--referrers-closure`
-
-  Prints the closure of the set of store paths *paths* under the
-  [referrers relation][referrer]; that is, all store paths that directly or
-  indirectly refer to one of *paths*. These are all the path currently
-  in the Nix store that are dependent on *paths*.
-
-  [referrer]: @docroot@/glossary.md#gloss-referrer
-
-- `--deriver` / `-d`
-
-  Prints the [deriver] that was used to build the store paths *paths*. If
-  the path has no deriver (e.g., if it is a source file), or if the
-  deriver is not known (e.g., in the case of a binary-only
-  deployment), the string `unknown-deriver` is printed.
-  The returned deriver is not guaranteed to exist in the local store, for
-  example when *paths* were substituted from a binary cache.
-  Use `--valid-derivers` instead to obtain valid paths only.
-
-  [deriver]: @docroot@/glossary.md#gloss-deriver
-
-- `--valid-derivers`
-
-  Prints a set of derivation files (`.drv`) which are supposed produce
-  said paths when realized. Might print nothing, for example for source paths
-  or paths substituted from a binary cache.
-
-- `--graph`
-
-  Prints the references graph of the store paths *paths* in the format
-  of the `dot` tool of AT\&T's [Graphviz
-  package](http://www.graphviz.org/). 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.
-
-- `--tree`
-
-  Prints the references graph of the store paths *paths* as a nested
-  ASCII tree. References are ordered by descending closure size; this
-  tends to flatten the tree, making it more readable. The query only
-  recurses into a store path when it is first encountered; this
-  prevents a blowup of the tree representation of the graph.
-
-- `--graphml`
-
-  Prints the references graph of the store paths *paths* in the
-  [GraphML](http://graphml.graphdrawing.org/) file format. 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.
-
-- `--binding` *name* / `-b` *name*
-
-  Prints the value of the attribute *name* (i.e., environment
-  variable) of the [store derivation]s *paths*. It is an error for a
-  derivation to not have the specified attribute.
-
-- `--hash`
-
-  Prints the SHA-256 hash of the contents of the store paths *paths*
-  (that is, the hash of the output of `nix-store --dump` on the given
-  paths). Since the hash is stored in the Nix database, this is a fast
-  operation.
-
-- `--size`
-
-  Prints the size in bytes of the contents of the store paths *paths*
-  — to be precise, the size of the output of `nix-store --dump` on
-  the given paths. Note that the actual disk space required by the
-  store paths may be higher, especially on filesystems with large
-  cluster sizes.
-
-- `--roots`
-
-  Prints the garbage collector roots that point, directly or
-  indirectly, at the store paths *paths*.
-
-{{#include ./opt-common.md}}
-
-{{#include ../opt-common.md}}
-
-{{#include ../env-common.md}}
-
-# Examples
-
-Print the closure (runtime dependencies) of the `svn` program in the
-current user environment:
-
-```console
-$ nix-store --query --requisites $(which svn)
-/nix/store/5mbglq5ldqld8sj57273aljwkfvj22mc-subversion-1.1.4
-/nix/store/9lz9yc6zgmc0vlqmn2ipcpkjlmbi51vv-glibc-2.3.4
-...
-```
-
-Print the build-time dependencies of `svn`:
-
-```console
-$ nix-store --query --requisites $(nix-store --query --deriver $(which svn))
-/nix/store/y6qa66l9h0pw161crnlk6y16rdrcljx4-grep-2.5.1.tar.bz2.drv
-/nix/store/z716h753s97jhnzvfank2srqbljswpgm-gcc-wrapper.sh
-/nix/store/f39x0q73rjdyvzm93y9wrkfr6x39lb7f-glibc-2.3.4.drv
-... lots of other paths ...
-```
-
-The difference with the previous example is that we ask the closure of
-the derivation (`-qd`), not the closure of the output path that contains
-`svn`.
-
-Show the build-time dependencies as a tree:
-
-```console
-$ nix-store --query --tree $(nix-store --query --deriver $(which svn))
-/nix/store/7i5082kfb6yjbqdbiwdhhza0am2xvh6c-subversion-1.1.4.drv
-+---/nix/store/vxnmkc8l8d2ijjha4xwhkfgx9vvc3q4c-builder.sh
-+---/nix/store/rn9776dy82n5qrgz7xbcl1iw4vfkcrkk-bash-3.0.drv
-|   +---/nix/store/x9j20hz6bln1crzn55qifk0bbsm8v5ac-bash
-|   +---/nix/store/ajnn1mcm45wjvn0rlc22gvx2cwhjnazx-builder.sh
-...
-```
-
-Show all paths that depend on the same OpenSSL library as `svn`:
-
-```console
-$ nix-store --query --referrers $(nix-store --query --binding openssl $(nix-store --query --deriver $(which svn)))
-/nix/store/23ny9l9wixx21632y2wi4p585qhva1q8-sylpheed-1.0.0
-/nix/store/5mbglq5ldqld8sj57273aljwkfvj22mc-subversion-1.1.4
-/nix/store/dpmvp969yhdqs7lm2r1a3gng7pyq6vy4-subversion-1.1.3
-/nix/store/l51240xqsgg8a7yrbqdx1rfzyv6l26fx-lynx-2.8.5
-```
-
-Show all paths that directly or indirectly depend on the Glibc (C
-library) used by `svn`:
-
-```console
-$ nix-store --query --referrers-closure $(ldd $(which svn) | grep /libc.so | awk '{print $3}')
-/nix/store/034a6h4vpz9kds5r6kzb9lhh81mscw43-libgnomeprintui-2.8.2
-/nix/store/15l3yi0d45prm7a82pcrknxdh6nzmxza-gawk-3.1.4
-...
-```
-
-Note that `ldd` is a command that prints out the dynamic libraries used
-by an ELF executable.
-
-Make a picture of the runtime dependency graph of the current user
-environment:
-
-```console
-$ nix-store --query --graph ~/.nix-profile | dot -Tps > graph.ps
-$ gv graph.ps
-```
-
-Show every garbage collector root that points to a store path that
-depends on `svn`:
-
-```console
-$ nix-store --query --roots $(which svn)
-/nix/var/nix/profiles/default-81-link
-/nix/var/nix/profiles/default-82-link
-/home/eelco/.local/state/nix/profiles/profile-97-link
-```

doc/manual/source/development/benchmarking.md

@@ -1,187 +0,0 @@
-# Running Benchmarks
-
-This guide explains how to build and run performance benchmarks in the Nix codebase.
-
-## Overview
-
-Nix uses the [Google Benchmark](https://github.com/google/benchmark) framework for performance testing. Benchmarks help measure and track the performance of critical operations like derivation parsing.
-
-## Building Benchmarks
-
-Benchmarks are disabled by default and must be explicitly enabled during the build configuration. For accurate results, use a debug-optimized release build.
-
-### Development Environment Setup
-
-First, enter the development shell which includes the necessary dependencies:
-
-```bash
-nix develop .#native-ccacheStdenv
-```
-
-### Configure Build with Benchmarks
-
-From the project root, configure the build with benchmarks enabled and optimization:
-
-```bash
-cd build
-meson configure -Dbenchmarks=true -Dbuildtype=debugoptimized
-```
-
-The `debugoptimized` build type provides:
-- Compiler optimizations for realistic performance measurements
-- Debug symbols for profiling and analysis
-- Balance between performance and debuggability
-
-### Build the Benchmarks
-
-Build the project including benchmarks:
-
-```bash
-ninja
-```
-
-This will create benchmark executables in the build directory. Currently available:
-- `build/src/libstore-tests/nix-store-benchmarks` - Store-related performance benchmarks
-
-Additional benchmark executables will be created as more benchmarks are added to the codebase.
-
-## Running Benchmarks
-
-### Basic Usage
-
-Run benchmark executables directly. For example, to run store benchmarks:
-
-```bash
-./build/src/libstore-tests/nix-store-benchmarks
-```
-
-As more benchmark executables are added, run them similarly from their respective build directories.
-
-### Filtering Benchmarks
-
-Run specific benchmarks using regex patterns:
-
-```bash
-# Run only derivation parser benchmarks
-./build/src/libstore-tests/nix-store-benchmarks --benchmark_filter="derivation.*"
-
-# Run only benchmarks for hello.drv
-./build/src/libstore-tests/nix-store-benchmarks --benchmark_filter=".*hello.*"
-```
-
-### Output Formats
-
-Generate benchmark results in different formats:
-
-```bash
-# JSON output
-./build/src/libstore-tests/nix-store-benchmarks --benchmark_format=json > results.json
-
-# CSV output
-./build/src/libstore-tests/nix-store-benchmarks --benchmark_format=csv > results.csv
-```
-
-### Advanced Options
-
-```bash
-# Run benchmarks multiple times for better statistics
-./build/src/libstore-tests/nix-store-benchmarks --benchmark_repetitions=10
-
-# Set minimum benchmark time (useful for micro-benchmarks)
-./build/src/libstore-tests/nix-store-benchmarks --benchmark_min_time=2
-
-# Compare against baseline
-./build/src/libstore-tests/nix-store-benchmarks --benchmark_baseline=baseline.json
-
-# Display time in custom units
-./build/src/libstore-tests/nix-store-benchmarks --benchmark_time_unit=ms
-```
-
-## Writing New Benchmarks
-
-To add new benchmarks:
-
-1. Create a new `.cc` file in the appropriate `*-tests` directory
-2. Include the benchmark header:
-   ```cpp
-   #include <benchmark/benchmark.h>
-   ```
-
-3. Write benchmark functions:
-   ```cpp
-   static void BM_YourBenchmark(benchmark::State & state)
-   {
-       // Setup code here
-
-       for (auto _ : state) {
-           // Code to benchmark
-       }
-   }
-   BENCHMARK(BM_YourBenchmark);
-   ```
-
-4. Add the file to the corresponding `meson.build`:
-   ```meson
-   benchmarks_sources = files(
-       'your-benchmark.cc',
-       # existing benchmarks...
-   )
-   ```
-
-## Profiling with Benchmarks
-
-For deeper performance analysis, combine benchmarks with profiling tools:
-
-```bash
-# Using Linux perf
-perf record ./build/src/libstore-tests/nix-store-benchmarks
-perf report
-```
-
-### Using Valgrind Callgrind
-
-Valgrind's callgrind tool provides detailed profiling information that can be visualized with kcachegrind:
-
-```bash
-# Profile with callgrind
-valgrind --tool=callgrind ./build/src/libstore-tests/nix-store-benchmarks
-
-# Visualize the results with kcachegrind
-kcachegrind callgrind.out.*
-```
-
-This provides:
-- Function call graphs
-- Instruction-level profiling
-- Source code annotation
-- Interactive visualization of performance bottlenecks
-
-## Continuous Performance Testing
-
-```bash
-# Save baseline results
-./build/src/libstore-tests/nix-store-benchmarks --benchmark_format=json > baseline.json
-
-# Compare against baseline in CI
-./build/src/libstore-tests/nix-store-benchmarks --benchmark_baseline=baseline.json
-```
-
-## Troubleshooting
-
-### Benchmarks not building
-
-Ensure benchmarks are enabled:
-```bash
-meson configure build | grep benchmarks
-# Should show: benchmarks true
-```
-
-### Inconsistent results
-
-- Ensure your system is not under heavy load
-- Disable CPU frequency scaling for consistent results
-- Run benchmarks multiple times with `--benchmark_repetitions`
-
-## See Also
-
-- [Google Benchmark documentation](https://github.com/google/benchmark/blob/main/docs/user_guide.md)

doc/manual/source/development/building.md

@@ -1,327 +0,0 @@
-# Building Nix
-
-This section provides some notes on how to start hacking on Nix.
-To get the latest version of Nix from GitHub:
-
-> **Note**
->
-> When checking out the repo on Windows, make sure you have the git setting `core.symlinks` enabled, before cloning, as there are symlinks in the repo.
-
-```console
-$ git clone https://github.com/NixOS/nix.git
-$ cd nix
-```
-
-> **Note**
->
-> The following instructions assume you already have some version of Nix installed locally, so that you can use it to set up the development environment.
-> If you don't have it installed, follow the [installation instructions](../installation/index.md).
-
-
-To build all dependencies and start a shell in which all environment variables are set up so that those dependencies can be found:
-
-```console
-$ nix-shell
-```
-
-To get a shell with one of the other [supported compilation environments](#compilation-environments):
-
-```console
-$ nix-shell --attr devShells.x86_64-linux.native-clangStdenv
-```
-
-> **Note**
->
-> You can use `native-ccacheStdenv` to drastically improve rebuild time.
-> By default, [ccache](https://ccache.dev) keeps artifacts in `~/.cache/ccache/`.
-
-To build Nix itself in this shell:
-
-```console
-[nix-shell]$ out="$(pwd)/outputs/out" dev=$out debug=$out mesonFlags+=" --prefix=${out}"
-[nix-shell]$ dontAddPrefix=1 configurePhase
-[nix-shell]$ buildPhase
-```
-
-To test it:
-
-```console
-[nix-shell]$ checkPhase
-```
-
-To install it in `$(pwd)/outputs`:
-
-```console
-[nix-shell]$ installPhase
-[nix-shell]$ ./outputs/out/bin/nix --version
-nix (Nix) 2.12
-```
-
-To build a release version of Nix for the current operating system and CPU architecture:
-
-```console
-$ nix-build
-```
-
-You can also build Nix for one of the [supported platforms](#platforms).
-
-## Building Nix with flakes
-
-This section assumes you are using Nix with the [`flakes`] and [`nix-command`] experimental features enabled.
-
-[`flakes`]: @docroot@/development/experimental-features.md#xp-feature-flakes
-[`nix-command`]: @docroot@/development/experimental-features.md#xp-feature-nix-command
-
-To build all dependencies and start a shell in which all environment variables are set up so that those dependencies can be found:
-
-```console
-$ nix develop
-```
-
-This shell also adds `./outputs/bin/nix` to your `$PATH` so you can run `nix` immediately after building it.
-
-To get a shell with one of the other [supported compilation environments](#compilation-environments):
-
-```console
-$ nix develop .#native-clangStdenv
-```
-
-> **Note**
->
-> Use `ccacheStdenv` to drastically improve rebuild time.
-> By default, [ccache](https://ccache.dev) keeps artifacts in `~/.cache/ccache/`.
-
-To build Nix itself in this shell:
-
-```console
-[nix-shell]$ configurePhase
-[nix-shell]$ buildPhase
-```
-
-To test it:
-
-```console
-[nix-shell]$ checkPhase
-```
-
-To install it in `$(pwd)/outputs`:
-
-```console
-[nix-shell]$ installPhase
-[nix-shell]$ nix --version
-nix (Nix) 2.12
-```
-
-For more information on running and filtering tests, see
-[`testing.md`](./testing.md).
-
-To build a release version of Nix for the current operating system and CPU architecture:
-
-```console
-$ nix build
-```
-
-You can also build Nix for one of the [supported platforms](#platforms).
-
-## Platforms
-
-Nix can be built for various platforms, as specified in [`flake.nix`]:
-
-[`flake.nix`]: https://github.com/nixos/nix/blob/master/flake.nix
-
-- `x86_64-linux`
-- `x86_64-darwin`
-- `i686-linux`
-- `aarch64-linux`
-- `aarch64-darwin`
-- `armv6l-linux`
-- `armv7l-linux`
-- `riscv64-linux`
-
-In order to build Nix for a different platform than the one you're currently
-on, you need a way for your current Nix installation to build code for that
-platform. Common solutions include [remote build machines] and [binary format emulation]
-(only supported on NixOS).
-
-[remote builders]: @docroot@/language/derivations.md#attr-builder
-[binary format emulation]: https://nixos.org/manual/nixos/stable/options.html#opt-boot.binfmt.emulatedSystems
-
-Given such a setup, executing the build only requires selecting the respective attribute.
-For example, to compile for `aarch64-linux`:
-
-```console
-$ nix-build --attr packages.aarch64-linux.default
-```
-
-or for Nix with the [`flakes`] and [`nix-command`] experimental features enabled:
-
-```console
-$ nix build .#packages.aarch64-linux.default
-```
-
-Cross-compiled builds are available for:
-- `armv6l-linux`
-- `armv7l-linux`
-- `riscv64-linux`
-Add more [system types](#system-type) to `crossSystems` in `flake.nix` to bootstrap Nix on unsupported platforms.
-
-### Building for multiple platforms at once
-
-It is useful to perform multiple cross and native builds on the same source tree,
-for example to ensure that better support for one platform doesn't break the build for another.
-Meson thankfully makes this very easy by confining all build products to the build directory --- one simple shares the source directory between multiple build directories, each of which contains the build for Nix to a different platform.
-
-Here's how to do that:
-
-1. Instruct Nixpkgs's infra where we want Meson to put its build directory
-
-   ```bash
-   mesonBuildDir=build-my-variant-name
-   ```
-
-1. Configure as usual
-
-   ```bash
-   configurePhase
-   ```
-
-3. Build as usual
-
-   ```bash
-   buildPhase
-   ```
-
-## System type
-
-Nix uses a string with the following format to identify the *system type* or *platform* it runs on:
-
-```
-<cpu>-<os>[-<abi>]
-```
-
-It is set when Nix is compiled for the given system, and based on the output of Meson's [`host_machine` information](https://mesonbuild.com/Reference-manual_builtin_host_machine.html)>
-
-```
-<cpu>-<vendor>-<os>[<version>][-<abi>]
-```
-
-When cross-compiling Nix with Meson for local development, you need to specify a [cross-file](https://mesonbuild.com/Cross-compilation.html) using the `--cross-file` option. Cross-files define the target architecture and toolchain. When cross-compiling Nix with Nix, Nixpkgs takes care of this for you.
-
-In the nix flake we also have some cross-compilation targets available:
-
-```
-nix build .#nix-everything-riscv64-unknown-linux-gnu
-nix build .#nix-everything-armv7l-unknown-linux-gnueabihf
-nix build .#nix-everything-armv7l-unknown-linux-gnueabihf
-nix build .#nix-everything-x86_64-unknown-freebsd
-nix build .#nix-everything-x86_64-w64-mingw32
-```
-
-For historic reasons and backward-compatibility, some CPU and OS identifiers are translated as follows:
-
-| `host_machine.cpu_family()` | `host_machine.endian()` | Nix                 |
-|-----------------------------|-------------------------|---------------------|
-| `x86`                       |                         | `i686`              |
-| `arm`                       |                         | `host_machine.cpu()`|
-| `ppc`                       | `little`                | `powerpcle`         |
-| `ppc64`                     | `little`                | `powerpc64le`       |
-| `ppc`                       | `big`                   | `powerpc`           |
-| `ppc64`                     | `big`                   | `powerpc64`         |
-| `mips`                      | `little`                | `mipsel`            |
-| `mips64`                    | `little`                | `mips64el`          |
-| `mips`                      | `big`                   | `mips`              |
-| `mips64`                    | `big`                   | `mips64`            |
-
-## Compilation environments
-
-Nix can be compiled using multiple environments:
-
-- `stdenv`: default;
-- `gccStdenv`: force the use of `gcc` compiler;
-- `clangStdenv`: force the use of `clang` compiler;
-- `ccacheStdenv`: enable [ccache], a compiler cache to speed up compilation.
-
-To build with one of those environments, you can use
-
-```console
-$ nix build .#nix-cli-ccacheStdenv
-```
-
-for flake-enabled Nix, or
-
-```console
-$ nix-build --attr nix-cli-ccacheStdenv
-```
-
-for classic Nix.
-
-You can use any of the other supported environments in place of `nix-cli-ccacheStdenv`.
-
-## Editor integration
-
-The `clangd` LSP server is installed by default on the `clang`-based `devShell`s.
-See [supported compilation environments](#compilation-environments) and instructions how to set up a shell [with flakes](#building-nix-with-flakes) or in [classic Nix](#building-nix).
-
-To use the LSP with your editor, you will want a `compile_commands.json` file telling `clangd` how we are compiling the code.
-Meson's configure always produces this inside the build directory.
-
-Configure your editor to use the `clangd` from the `.#native-clangStdenv` shell.
-You can do that either by running it inside the development shell, or by using [nix-direnv](https://github.com/nix-community/nix-direnv) and [the appropriate editor plugin](https://github.com/direnv/direnv/wiki#editor-integration).
-
-> **Note**
->
-> For some editors (e.g. Visual Studio Code), you may need to install a [special extension](https://open-vsx.org/extension/llvm-vs-code-extensions/vscode-clangd) for the editor to interact with `clangd`.
-> Some other editors (e.g. Emacs, Vim) need a plugin to support LSP servers in general (e.g. [lsp-mode](https://github.com/emacs-lsp/lsp-mode) for Emacs and [vim-lsp](https://github.com/prabirshrestha/vim-lsp) for vim).
-> Editor-specific setup is typically opinionated, so we will not cover it here in more detail.
-
-## Formatting and pre-commit hooks
-
-You may run the formatters as a one-off using:
-
-```console
-./maintainers/format.sh
-```
-
-### Pre-commit hooks
-
-If you'd like to run the formatters before every commit, install the hooks:
-
-```
-pre-commit-hooks-install
-```
-
-This installs [pre-commit](https://pre-commit.com) using [cachix/git-hooks.nix](https://github.com/cachix/git-hooks.nix).
-
-When making a commit, pay attention to the console output.
-If it fails, run `git add --patch` to approve the suggestions _and commit again_.
-
-To refresh pre-commit hook's config file, do the following:
-1. Exit the development shell and start it again by running `nix develop`.
-2. If you also use the pre-commit hook, also run `pre-commit-hooks-install` again.
-
-### VSCode
-
-Insert the following json into your `.vscode/settings.json` file to configure `nixfmt`.
-This will be picked up by the _Format Document_ command, `"editor.formatOnSave"`, etc.
-
-```json
-{
-  "nix.formatterPath": "nixfmt",
-  "nix.serverSettings": {
-    "nixd": {
-      "formatting": {
-        "command": [
-          "nixfmt"
-        ],
-      },
-    },
-    "nil": {
-      "formatting": {
-        "command": [
-          "nixfmt"
-        ],
-      },
-    },
-  },
-}
-```

doc/manual/source/development/debugging.md

@@ -1,79 +0,0 @@
-# Debugging Nix
-
-This section shows how to build and debug Nix with debug symbols enabled.
-
-Additionally, see [Testing Nix](./testing.md) for further instructions on how to debug Nix in the context of a unit test or functional test.
-
-## Building Nix with Debug Symbols
-
-In the development shell, `mesonBuildType` is set automatically to `debugoptimized`. This builds Nix with debug symbols, which are essential for effective debugging.
-
-It is also possible to build without optimization for faster build:
-
-```console
-[nix-shell]$ NIX_HARDENING_ENABLE=$(printLines $NIX_HARDENING_ENABLE | grep -v fortify)
-[nix-shell]$ export mesonBuildType=debug
-```
-
-(The first line is needed because `fortify` hardening requires at least some optimization.)
-
-## Building Nix with sanitizers
-
-Nix can be built with [Address](https://clang.llvm.org/docs/AddressSanitizer.html) and
-[UB](https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html) sanitizers using LLVM
-or GCC. This is useful when debugging memory corruption issues.
-
-```console
-[nix-shell]$ export mesonBuildType=debugoptimized
-[nix-shell]$ appendToVar mesonFlags "-Dlibexpr:gc=disabled" # Disable Boehm
-[nix-shell]$ appendToVar mesonFlags "-Dbindings=false" # Disable nix-perl
-[nix-shell]$ appendToVar mesonFlags "-Db_sanitize=address,undefined"
-```
-
-## Debugging the Nix Binary
-
-Obtain your preferred debugger within the development shell:
-
-```console
-[nix-shell]$ nix-shell -p gdb
-```
-
-On macOS, use `lldb`:
-
-```console
-[nix-shell]$ nix-shell -p lldb
-```
-
-### Launching the Debugger
-
-To debug the Nix binary, run:
-
-```console
-[nix-shell]$ gdb --args ../outputs/out/bin/nix
-```
-
-On macOS, use `lldb`:
-
-```console
-[nix-shell]$ lldb -- ../outputs/out/bin/nix
-```
-
-### Using the Debugger
-
-Inside the debugger, you can set breakpoints, run the program, and inspect variables.
-
-```gdb
-(gdb) break main
-(gdb) run <arguments>
-```
-
-Refer to the [GDB Documentation](https://www.gnu.org/software/gdb/documentation/) for comprehensive usage instructions.
-
-On macOS, use `lldb`:
-
-```lldb
-(lldb) breakpoint set --name main
-(lldb) process launch -- <arguments>
-```
-
-Refer to the [LLDB Tutorial](https://lldb.llvm.org/use/tutorial.html) for comprehensive usage instructions.

doc/manual/source/development/meson.build

@@ -1,12 +0,0 @@
-experimental_feature_descriptions_md = custom_target(
-  command : nix_eval_for_docs + [
-    '--expr', 'import @INPUT0@ (builtins.fromJSON (builtins.readFile @INPUT1@))',
-  ],
-  input : [
-    '../../generate-xp-features.nix',
-    xp_features_json,
-  ],
-  capture : true,
-  env : nix_env_for_docs,
-  output : 'experimental-feature-descriptions.md',
-)

doc/manual/source/glossary.md

@@ -1,415 +0,0 @@
-# Glossary
-
-- [build system]{#gloss-build-system}
-
-  Generic term for software that facilitates the building of software by automating the invocation of compilers, linkers, and other tools.
-
-  Nix can be used as a generic build system.
-  It has no knowledge of any particular programming language or toolchain.
-  These details are specified in [derivation expressions](#gloss-derivation-expression).
-
-- [content address]{#gloss-content-address}
-
-  A
-  [*content address*](https://en.wikipedia.org/wiki/Content-addressable_storage)
-  is a secure way to reference immutable data.
-  The reference is calculated directly from the content of the data being referenced, which means the reference is
-  [*tamper proof*](https://en.wikipedia.org/wiki/Tamperproofing)
-  --- variations of the data should always calculate to distinct content addresses.
-
-  For how Nix uses content addresses, see:
-
-    - [Content-Addressing File System Objects](@docroot@/store/file-system-object/content-address.md)
-    - [Content-Addressing Store Objects](@docroot@/store/store-object/content-address.md)
-    - [content-addressing derivation](#gloss-content-addressing-derivation)
-
-  Software Heritage's writing on [*Intrinsic and Extrinsic identifiers*](https://www.softwareheritage.org/2020/07/09/intrinsic-vs-extrinsic-identifiers) is also a good introduction to the value of content-addressing over other referencing schemes.
-
-  Besides content addressing, the Nix store also uses [input addressing](#gloss-input-addressed-store-object).
-
-- [content-addressed storage]{#gloss-content-addressed-store}
-
-  The industry term for storage and retrieval systems using [content addressing](#gloss-content-address). A Nix store also has [input addressing](#gloss-input-addressed-store-object), and metadata.
-
-- [derivation]{#gloss-derivation}
-
-  A derivation can be thought of as a [pure function](https://en.wikipedia.org/wiki/Pure_function) that produces new [store objects][store object] from existing store objects.
-
-  Derivations are implemented as [operating system processes that run in a sandbox](@docroot@/store/building.md#builder-execution).
-  This sandbox by default only allows reading from store objects specified as inputs, and only allows writing to designated [outputs][output] to be [captured as store objects](@docroot@/store/building.md#processing-outputs).
-
-  A derivation is typically specified as a [derivation expression] in the [Nix language], and [instantiated][instantiate] to a [store derivation].
-  There are multiple ways of obtaining store objects from store derivatons, collectively called [realisation][realise].
-
-  [derivation]: #gloss-derivation
-
-- [store derivation]{#gloss-store-derivation}
-
-  A [derivation] represented as a [store object].
-
-  See [Store Derivation](@docroot@/store/derivation/index.md#store-derivation) for details.
-
-  [store derivation]: #gloss-store-derivation
-
-- [directed acyclic graph]{#gloss-directed-acyclic-graph}
-
-  A [directed acyclic graph](https://en.wikipedia.org/wiki/Directed_acyclic_graph) (DAG) is graph whose edges are given a direction ("a to b" is not the same edge as "b to a"), and for which no possible path (created by joining together edges) forms a cycle.
-
-  DAGs are very important to Nix.
-  In particular, the non-self-[references][reference] of [store object][store object] form a cycle.
-
-- [derivation path]{#gloss-derivation-path}
-
-  A [store path] which uniquely identifies a [store derivation].
-
-  See [Referencing Store Derivations](@docroot@/store/derivation/index.md#derivation-path) for details.
-
-  Not to be confused with [deriving path].
-
-  [derivation path]: #gloss-derivation-path
-
-- [derivation expression]{#gloss-derivation-expression}
-
-  A description of a [store derivation] using the [`derivation` primitive](./language/derivations.md) in the [Nix language].
-
-  [derivation expression]: #gloss-derivation-expression
-
-- [instantiate]{#gloss-instantiate}, instantiation
-
-  Translate a [derivation expression] into a [store derivation].
-
-  See [`nix-instantiate`](./command-ref/nix-instantiate.md), which produces a store derivation from a Nix expression that evaluates to a derivation.
-
-  [instantiate]: #gloss-instantiate
-
-- [realise]{#gloss-realise}, realisation
-
-  Ensure a [store path] is [valid][validity].
-
-  This can be achieved by:
-  - Fetching a pre-built [store object] from a [substituter]
-  - [Building](@docroot@/store/building.md) the corresponding [store derivation]
-  - Delegating to a [remote machine](@docroot@/command-ref/conf-file.md#conf-builders) and retrieving the outputs
-
-  See [`nix-store --realise`](@docroot@/command-ref/nix-store/realise.md) for a detailed description of the algorithm.
-
-  See also [`nix-build`](./command-ref/nix-build.md) and [`nix build`](./command-ref/new-cli/nix3-build.md) (experimental).
-
-  [realise]: #gloss-realise
-
-- [content-addressing derivation]{#gloss-content-addressing-derivation}
-
-  A derivation which has the
-  [`__contentAddressed`](./language/advanced-attributes.md#adv-attr-__contentAddressed)
-  attribute set to `true`.
-
-- [fixed-output derivation]{#gloss-fixed-output-derivation} (FOD)
-
-  A [store derivation] where a cryptographic hash of the [output] is determined in advance using the [`outputHash`](./language/advanced-attributes.md#adv-attr-outputHash) attribute, and where the [`builder`](@docroot@/language/derivations.md#attr-builder) executable has access to the network.
-
-- [store]{#gloss-store}
-
-  A collection of [store objects][store object], with operations to manipulate that collection.
-  See [Nix Store](./store/index.md) for details.
-
-  There are many types of stores, see [Store Types](./store/types/index.md) for details.
-
-  [store]: #gloss-store
-
-- [Nix instance]{#gloss-nix-instance}
-  <!-- ambiguous -->
-  1. An installation of Nix, which includes the presence of a [store], and the Nix package manager which operates on that store.
-     A local Nix installation and a [remote builder](@docroot@/advanced-topics/distributed-builds.md) are two examples of Nix instances.
-  2. A running Nix process, such as the `nix` command.
-
-- [binary cache]{#gloss-binary-cache}
-
-  A *binary cache* is a Nix store which uses a different format: its
-  metadata and signatures are kept in `.narinfo` files rather than in a
-  [Nix database]. This different format simplifies serving store objects
-  over the network, but cannot host builds. Examples of binary caches
-  include S3 buckets and the [NixOS binary cache](https://cache.nixos.org).
-
-- [store path]{#gloss-store-path}
-
-  The location of a [store object] in the file system, i.e., an immediate child of the Nix store directory.
-
-  > **Example**
-  >
-  > `/nix/store/jf6gn2dzna4nmsfbdxsd7kwhsk6gnnlr-git-2.38.1`
-
-  See [Store Path](@docroot@/store/store-path.md) for details.
-
-  [store path]: #gloss-store-path
-
-- [file system object]{#gloss-file-system-object}
-
-  The Nix data model for representing simplified file system data.
-
-  See [File System Object](@docroot@/store/file-system-object.md) for details.
-
-  [file system object]: #gloss-file-system-object
-
-- [store object]{#gloss-store-object}
-
-  Part of the contents of a [store].
-
-  A store object consists of a [file system object], [references][reference] to other store objects, and other metadata.
-  It can be referred to by a [store path].
-
-  See [Store Object](@docroot@/store/store-object.md) for details.
-
-  [store object]: #gloss-store-object
-
-- [IFD]{#gloss-ifd}
-
-  [Import From Derivation](./language/import-from-derivation.md)
-
-- [input-addressed store object]{#gloss-input-addressed-store-object}
-
-  A store object produced by building a
-  non-[content-addressed](#gloss-content-addressing-derivation),
-  non-[fixed-output](#gloss-fixed-output-derivation)
-  derivation.
-
-  See [input-addressing derivation outputs](store/derivation/outputs/input-address.md) for details.
-
-- [content-addressed store object]{#gloss-content-addressed-store-object}
-
-  A [store object] which is [content-addressed](#gloss-content-address),
-  i.e. whose [store path] is determined by its contents.
-  This includes derivations, the outputs of [content-addressing derivations](#gloss-content-addressing-derivation), and the outputs of [fixed-output derivations](#gloss-fixed-output-derivation).
-
-  See [Content-Addressing Store Objects](@docroot@/store/store-object/content-address.md) for details.
-
-- [substitute]{#gloss-substitute}
-
-  A substitute is a command invocation stored in the [Nix database] that
-  describes how to build a store object, bypassing the normal build
-  mechanism (i.e., derivations). Typically, the substitute builds the
-  store object by downloading a pre-built version of the store object
-  from some server.
-
-- [substituter]{#gloss-substituter}
-
-  An additional [store]{#gloss-store} from which Nix can obtain store objects instead of building them.
-  Often the substituter is a [binary cache](#gloss-binary-cache), but any store can serve as substituter.
-
-  See the [`substituters` configuration option](./command-ref/conf-file.md#conf-substituters) for details.
-
-  [substituter]: #gloss-substituter
-
-- [purity]{#gloss-purity}
-
-  The assumption that equal Nix derivations when run always produce
-  the same output. This cannot be guaranteed in general (e.g., a
-  builder can rely on external inputs such as the network or the
-  system time) but the Nix model assumes it.
-
-- [impure derivation]{#gloss-impure-derivation}
-
-  [An experimental feature](@docroot@/development/experimental-features.md#xp-feature-impure-derivations) that allows derivations to be explicitly marked as impure,
-  so that they are always rebuilt, and their outputs not reused by subsequent calls to realise them.
-
-- [Nix database]{#gloss-nix-database}
-
-  An SQlite database to track [reference]s between [store object]s.
-  This is an implementation detail of the [local store].
-
-  Default location: `/nix/var/nix/db`.
-
-  [Nix database]: #gloss-nix-database
-
-- [Nix expression]{#gloss-nix-expression}
-
-  A syntactically valid use of the [Nix language].
-
-  > **Example**
-  >
-  > The contents of a `.nix` file form a Nix expression.
-
-  Nix expressions specify [derivation expressions][derivation expression], which are [instantiated][instantiate] into the Nix store as [store derivations][store derivation].
-  These derivations can then be [realised][realise] to produce [outputs][output].
-
-  > **Example**
-  >
-  > Building and deploying software using Nix entails writing Nix expressions to describe [packages][package] and compositions thereof.
-
-- [reference]{#gloss-reference}
-
-  An edge from one [store object] to another.
-
-  See [References](@docroot@/store/store-object.md#references) for details.
-
-  [reference]: #gloss-reference
-
-  See [References](@docroot@/store/store-object.md#references) for details.
-
-- [reachable]{#gloss-reachable}
-
-  A store path `Q` is reachable from another store path `P` if `Q`
-  is in the *closure* of the *references* relation.
-
-  See [References](@docroot@/store/store-object.md#references) for details.
-
-- [closure]{#gloss-closure}
-
-  The closure of a store path is the set of store paths that are
-  directly or indirectly “reachable” from that store path; that is,
-  it’s the closure of the path under the *references* relation. For
-  a package, the closure of its derivation is equivalent to the
-  build-time dependencies, while the closure of its [output path] is
-  equivalent to its runtime dependencies. For correct deployment it
-  is necessary to deploy whole closures, since otherwise at runtime
-  files could be missing. The command `nix-store --query --requisites ` prints out
-  closures of store paths.
-
-  As an example, if the [store object] at path `P` contains a [reference]
-  to a store object at path `Q`, then `Q` is in the closure of `P`. Further, if `Q`
-  references `R` then `R` is also in the closure of `P`.
-
-  See [References](@docroot@/store/store-object.md#references) for details.
-
-  [closure]: #gloss-closure
-
-- [requisite]{#gloss-requisite}
-
-  A store object [reachable] by a path (chain of references) from a given [store object].
-  The [closure] is the set of requisites.
-
-  See [References](@docroot@/store/store-object.md#references) for details.
-
-- [referrer]{#gloss-referrer}
-
-  A reversed edge from one [store object] to another.
-
-- [output]{#gloss-output}
-
-  A [store object] produced by a [store derivation].
-  See [the `outputs` argument to the `derivation` function](@docroot@/language/derivations.md#attr-outputs) for details.
-
-  [output]: #gloss-output
-
-- [output path]{#gloss-output-path}
-
-  The [store path] to the [output] of a [store derivation].
-
-  [output path]: #gloss-output-path
-
-- [output closure]{#gloss-output-closure}\
-  The [closure] of an [output path]. It only contains what is [reachable] from the output.
-
-- [deriving path]{#gloss-deriving-path}
-
-  Deriving paths are a way to refer to [store objects][store object] that might not yet be [realised][realise].
-
-  See [Deriving Path](./store/derivation/index.md#deriving-path) for details.
-
-  Not to be confused with [derivation path].
-
-- [deriver]{#gloss-deriver}
-
-  The [store derivation] that produced an [output path].
-
-  The deriver for an output path can be queried with the `--deriver` option to
-  [`nix-store --query`](@docroot@/command-ref/nix-store/query.md).
-
-- [validity]{#gloss-validity}
-
-  A store path is valid if all [store object]s in its [closure] can be read from the [store].
-
-  For a [local store], this means:
-  - The store path leads to an existing [store object] in that [store].
-  - The store path is listed in the [Nix database] as being valid.
-  - All paths in the store path's [closure] are valid.
-
-  [validity]: #gloss-validity
-  [local store]: @docroot@/store/types/local-store.md
-
-- [user environment]{#gloss-user-env}
-
-  An automatically generated store object that consists of a set of
-  symlinks to “active” applications, i.e., other store paths. These
-  are generated automatically by
-  [`nix-env`](./command-ref/nix-env.md). See *profiles*.
-
-- [profile]{#gloss-profile}
-
-  A symlink to the current *user environment* of a user, e.g.,
-  `/nix/var/nix/profiles/default`.
-
-- [installable]{#gloss-installable}
-
-  Something that can be realised in the Nix store.
-
-  See [installables](./command-ref/new-cli/nix.md#installables) for [`nix` commands](./command-ref/new-cli/nix.md) (experimental) for details.
-
-- [Nix Archive (NAR)]{#gloss-nar}
-
-  A *N*ix *AR*chive. This is a serialisation of a path in the Nix
-  store. It can contain regular files, directories and symbolic
-  links.  NARs are generated and unpacked using `nix-store --dump`
-  and `nix-store --restore`.
-
-  See [Nix Archive](store/file-system-object/content-address.html#serial-nix-archive) for details.
-
-- [`∅`]{#gloss-empty-set}
-
-  The empty set symbol. In the context of profile history, this denotes a package is not present in a particular version of the profile.
-
-- [`ε`]{#gloss-epsilon}
-
-  The epsilon symbol. In the context of a package, this means the version is empty. More precisely, the derivation does not have a version attribute.
-
-- [package]{#package}
-
-  A software package; files that belong together for a particular purpose, and metadata.
-
-  Nix represents files as [file system objects][file system object], and how they belong together is encoded as [references][reference] between [store objects][store object] that contain these file system objects.
-
-  The [Nix language] allows denoting packages in terms of [attribute sets](@docroot@/language/types.md#type-attrs) containing:
-  - attributes that refer to the files of a package, typically in the form of [derivation outputs](#gloss-output),
-  - attributes with metadata, such as information about how the package is supposed to be used.
-
-  The exact shape of these attribute sets is up to convention.
-
-  [package]: #package
-
-- [string interpolation]{#gloss-string-interpolation}
-
-  Expanding expressions enclosed in `${ }` within a [string], [path], or [attribute name].
-
-  See [String interpolation](./language/string-interpolation.md) for details.
-
-  [string]: ./language/types.md#type-string
-  [path]: ./language/types.md#type-path
-  [attribute name]: ./language/types.md#type-attrs
-
-- [base directory]{#gloss-base-directory}
-
-  The location from which relative paths are resolved.
-
-  - For expressions in a file, the base directory is the directory containing that file.
-    This is analogous to the directory of a [base URL](https://datatracker.ietf.org/doc/html/rfc1808#section-3.3).
-    <!-- which is sufficient for resolving non-empty URLs -->
-
-  <!--
-    The wording here may look awkward, but it's for these reasons:
-      * "with --expr": it's a flag, and not an option with an accompanying value
-      * "written in": the expression itself must be written as an argument,
-        whereas the more natural "passed as an argument" allows an interpretation
-        where the expression could be passed by file name.
-    -->
-  - For expressions written in command line arguments with [`--expr`](@docroot@/command-ref/opt-common.html#opt-expr), the base directory is the current working directory.
-
-  [base directory]: #gloss-base-directory
-
-- [experimental feature]{#gloss-experimental-feature}
-
-  Not yet stabilized functionality guarded by named experimental feature flags.
-  These flags are enabled or disabled with the [`experimental-features`](./command-ref/conf-file.html#conf-experimental-features) setting.
-
-  See the contribution guide on the [purpose and lifecycle of experimental feaures](@docroot@/development/experimental-features.md).
-
-
-[Nix language]: ./language/index.md

doc/manual/source/installation/index.md

@@ -1,48 +0,0 @@
-# Installation
-
-This section describes how to install and configure Nix for first-time use.
-
-The current recommended option on Linux and MacOS is [multi-user](#multi-user).
-
-## Multi-user
-
-This installation offers better sharing, improved isolation, and more security
-over a single user installation.
-
-This option requires either:
-
-* Linux running systemd, with SELinux disabled
-* MacOS
-
-> **Updating to macOS 15 Sequoia**
->
-> If you recently updated to macOS 15 Sequoia and are getting
-> ```console
-> error: the user '_nixbld1' in the group 'nixbld' does not exist
-> ```
-> when running Nix commands, refer to GitHub issue [NixOS/nix#10892](https://github.com/NixOS/nix/issues/10892) for instructions to fix your installation without reinstalling.
-
-```console
-$ curl -L https://nixos.org/nix/install | sh -s -- --daemon
-```
-
-## Single-user
-
-> Single-user is not supported on Mac.
-
-> `warning: installing Nix as root is not supported by this script!`
-
-This installation has less requirements than the multi-user install, however it
-cannot offer equivalent sharing, isolation, or security.
-
-This option is suitable for systems without systemd.
-
-```console
-$ curl -L https://nixos.org/nix/install | sh -s -- --no-daemon
-```
-
-## Distributions
-
-The Nix community maintains installers for several distributions.
-
-They can be found in the [`nix-community/nix-installers`](https://github.com/nix-community/nix-installers) repository.

doc/manual/source/installation/installing-docker.md

@@ -1,79 +0,0 @@
-# Using Nix within Docker
-
-To run the latest stable release of Nix with Docker run the following command:
-
-```console
-$ docker run -ti docker.io/nixos/nix
-Unable to find image 'docker.io/nixos/nix:latest' locally
-latest: Pulling from docker.io/nixos/nix
-5843afab3874: Pull complete
-b52bf13f109c: Pull complete
-1e2415612aa3: Pull complete
-Digest: sha256:27f6e7f60227e959ee7ece361f75d4844a40e1cc6878b6868fe30140420031ff
-Status: Downloaded newer image for docker.io/nixos/nix:latest
-35ca4ada6e96:/# nix --version
-nix (Nix) 2.3.12
-35ca4ada6e96:/# exit
-```
-
-> If you want the latest pre-release you can use ghcr.io/nixos/nix and view them at https://github.com/nixos/nix/pkgs/container/nix
-
-# What is included in Nix's Docker image?
-
-The official Docker image is created using `pkgs.dockerTools.buildLayeredImage`
-(and not with `Dockerfile` as it is usual with Docker images). You can still
-base your custom Docker image on it as you would do with any other Docker
-image.
-
-The Docker image is also not based on any other image and includes minimal set
-of runtime dependencies that are required to use Nix:
-
- - pkgs.nix
- - pkgs.bashInteractive
- - pkgs.coreutils-full
- - pkgs.gnutar
- - pkgs.gzip
- - pkgs.gnugrep
- - pkgs.which
- - pkgs.curl
- - pkgs.less
- - pkgs.wget
- - pkgs.man
- - pkgs.cacert.out
- - pkgs.findutils
-
-# Docker image with the latest development version of Nix
-
-To get the latest image that was built by [Hydra](https://hydra.nixos.org) run
-the following command:
-
-```console
-$ curl -L https://hydra.nixos.org/job/nix/master/dockerImage.x86_64-linux/latest/download/1 | docker load
-$ docker run -ti nix:2.5pre20211105
-```
-
-You can also build a Docker image from source yourself:
-
-```console
-$ nix build ./\#hydraJobs.dockerImage.x86_64-linux
-$ docker load -i ./result/image.tar.gz
-$ docker run -ti nix:2.5pre20211105
-```
-
-# Docker image with non-root Nix
-
-If you would like to run Nix in a container under a user other than `root`,
-you can build an image with a non-root single-user installation of Nix
-by specifying the `uid`, `gid`, `uname`, and `gname` arguments to `docker.nix`:
-
-```console
-$ nix build --file docker.nix \
-    --arg uid 1000 \
-    --arg gid 1000 \
-    --argstr uname user \
-    --argstr gname user \
-    --argstr name nix-user \
-    --out-link nix-user.tar.gz
-$ docker load -i nix-user.tar.gz
-$ docker run -ti nix-user
-```

doc/manual/source/language/advanced-attributes.md

@@ -1,374 +0,0 @@
-# Advanced Attributes
-
-Derivations can declare some infrequently used optional attributes.
-
-## Inputs
-
-  - [`exportReferencesGraph`]{#adv-attr-exportReferencesGraph}\
-    This attribute allows builders access to the references graph of
-    their inputs. The attribute is a list of inputs in the Nix store
-    whose references graph the builder needs to know. The value of
-    this attribute should be a list of pairs `[ name1 path1 name2
-    path2 ...  ]`. The references graph of each *pathN* will be stored
-    in a text file *nameN* in the temporary build directory. The text
-    files have the format used by `nix-store --register-validity`
-    (with the deriver fields left empty). For example, when the
-    following derivation is built:
-
-    ```nix
-    derivation {
-      ...
-      exportReferencesGraph = [ "libfoo-graph" libfoo ];
-    };
-    ```
-
-    the references graph of `libfoo` is placed in the file
-    `libfoo-graph` in the temporary build directory.
-
-    `exportReferencesGraph` is useful for builders that want to do
-    something with the closure of a store path. Examples include the
-    builders in NixOS that generate the initial ramdisk for booting
-    Linux (a `cpio` archive containing the closure of the boot script)
-    and the ISO-9660 image for the installation CD (which is populated
-    with a Nix store containing the closure of a bootable NixOS
-    configuration).
-
-  - [`passAsFile`]{#adv-attr-passAsFile}\
-    A list of names of attributes that should be passed via files rather
-    than environment variables. For example, if you have
-
-    ```nix
-    passAsFile = ["big"];
-    big = "a very long string";
-    ```
-
-    then when the builder runs, the environment variable `bigPath`
-    will contain the absolute path to a temporary file containing `a
-    very long string`. That is, for any attribute *x* listed in
-    `passAsFile`, Nix will pass an environment variable `xPath`
-    holding the path of the file containing the value of attribute
-    *x*. This is useful when you need to pass large strings to a
-    builder, since most operating systems impose a limit on the size
-    of the environment (typically, a few hundred kilobyte).
-
-  - [`__structuredAttrs`]{#adv-attr-structuredAttrs}\
-    If the special attribute `__structuredAttrs` is set to `true`, the other derivation
-    attributes are serialised into a file in JSON format.
-
-    This obviates the need for [`passAsFile`](#adv-attr-passAsFile) since JSON files have no size restrictions, unlike process environments.
-    It also makes it possible to tweak derivation settings in a structured way;
-    see [`outputChecks`](#adv-attr-outputChecks) for example.
-
-    See the [corresponding section in the derivation page](@docroot@/store/derivation/index.md#structured-attrs) for further details.
-
-    > **Warning**
-    >
-    > If set to `true`, other advanced attributes such as [`allowedReferences`](#adv-attr-allowedReferences), [`allowedRequisites`](#adv-attr-allowedRequisites),
-    [`disallowedReferences`](#adv-attr-disallowedReferences) and [`disallowedRequisites`](#adv-attr-disallowedRequisites), maxSize, and maxClosureSize.
-    will have no effect.
-
-## Output checks
-
-See the [corresponding section in the derivation output page](@docroot@/store/derivation/outputs/index.md).
-
-  - [`allowedReferences`]{#adv-attr-allowedReferences}\
-    The optional attribute `allowedReferences` specifies a list of legal
-    references (dependencies) of the output of the builder. For example,
-
-    ```nix
-    allowedReferences = [];
-    ```
-
-    enforces that the output of a derivation cannot have any runtime
-    dependencies on its inputs. To allow an output to have a runtime
-    dependency on itself, use `"out"` as a list item. This is used in
-    NixOS to check that generated files such as initial ramdisks for
-    booting Linux don’t have accidental dependencies on other paths in
-    the Nix store.
-
-  - [`allowedRequisites`]{#adv-attr-allowedRequisites}\
-    This attribute is similar to `allowedReferences`, but it specifies
-    the legal requisites of the whole closure, so all the dependencies
-    recursively. For example,
-
-    ```nix
-    allowedRequisites = [ foobar ];
-    ```
-
-    enforces that the output of a derivation cannot have any other
-    runtime dependency than `foobar`, and in addition it enforces that
-    `foobar` itself doesn't introduce any other dependency itself.
-
-  - [`disallowedReferences`]{#adv-attr-disallowedReferences}\
-    The optional attribute `disallowedReferences` specifies a list of
-    illegal references (dependencies) of the output of the builder. For
-    example,
-
-    ```nix
-    disallowedReferences = [ foo ];
-    ```
-
-    enforces that the output of a derivation cannot have a direct
-    runtime dependencies on the derivation `foo`.
-
-  - [`disallowedRequisites`]{#adv-attr-disallowedRequisites}\
-    This attribute is similar to `disallowedReferences`, but it
-    specifies illegal requisites for the whole closure, so all the
-    dependencies recursively. For example,
-
-    ```nix
-    disallowedRequisites = [ foobar ];
-    ```
-
-    enforces that the output of a derivation cannot have any runtime
-    dependency on `foobar` or any other derivation depending recursively
-    on `foobar`.
-
-  - [`outputChecks`]{#adv-attr-outputChecks}\
-    When using [structured attributes](#adv-attr-structuredAttrs), the `outputChecks`
-    attribute allows defining checks per-output.
-
-    In addition to
-    [`allowedReferences`](#adv-attr-allowedReferences), [`allowedRequisites`](#adv-attr-allowedRequisites),
-    [`disallowedReferences`](#adv-attr-disallowedReferences) and [`disallowedRequisites`](#adv-attr-disallowedRequisites),
-    the following attributes are available:
-
-    - `maxSize` defines the maximum size of the resulting [store object](@docroot@/store/store-object.md).
-    - `maxClosureSize` defines the maximum size of the output's closure.
-    - `ignoreSelfRefs` controls whether self-references should be considered when
-      checking for allowed references/requisites.
-
-    Example:
-
-    ```nix
-    __structuredAttrs = true;
-
-    outputChecks.out = {
-      # The closure of 'out' must not be larger than 256 MiB.
-      maxClosureSize = 256 * 1024 * 1024;
-
-      # It must not refer to the C compiler or to the 'dev' output.
-      disallowedRequisites = [ stdenv.cc "dev" ];
-    };
-
-    outputChecks.dev = {
-      # The 'dev' output must not be larger than 128 KiB.
-      maxSize = 128 * 1024;
-    };
-    ```
-
-## Other output modifications
-
-  - [`unsafeDiscardReferences`]{#adv-attr-unsafeDiscardReferences}\
-    When using [structured attributes](#adv-attr-structuredAttrs), the
-    attribute `unsafeDiscardReferences` is an attribute set with a boolean value for each output name.
-    If set to `true`, it disables scanning the output for runtime dependencies.
-
-    Example:
-
-    ```nix
-    __structuredAttrs = true;
-    unsafeDiscardReferences.out = true;
-    ```
-
-    This is useful, for example, when generating self-contained filesystem images with
-    their own embedded Nix store: hashes found inside such an image refer
-    to the embedded store and not to the host's Nix store.
-
-## Build scheduling
-
-  - [`preferLocalBuild`]{#adv-attr-preferLocalBuild}\
-    If this attribute is set to `true` and [distributed building is enabled](@docroot@/command-ref/conf-file.md#conf-builders), then, if possible, the derivation will be built locally instead of being forwarded to a remote machine.
-    This is useful for derivations that are cheapest to build locally.
-
-  - [`allowSubstitutes`]{#adv-attr-allowSubstitutes}\
-    If this attribute is set to `false`, then Nix will always build this derivation (locally or remotely); it will not try to substitute its outputs.
-    This is useful for derivations that are cheaper to build than to substitute.
-
-    This attribute can be ignored by setting [`always-allow-substitutes`](@docroot@/command-ref/conf-file.md#conf-always-allow-substitutes) to `true`.
-
-    > **Note**
-    >
-    > If set to `false`, the [`builder`] should be able to run on the system type specified in the [`system` attribute](./derivations.md#attr-system), since the derivation cannot be substituted.
-
-    [`builder`]: ./derivations.md#attr-builder
-
-- [`requiredSystemFeatures`]{#adv-attr-requiredSystemFeatures}\
-  If a derivation has the `requiredSystemFeatures` attribute, then Nix will only build it on a machine that has the corresponding features set in its [`system-features` configuration](@docroot@/command-ref/conf-file.md#conf-system-features).
-
-  For example, setting
-
-  ```nix
-  requiredSystemFeatures = [ "kvm" ];
-  ```
-
-  ensures that the derivation can only be built on a machine with the `kvm` feature.
-
-# Impure builder configuration
-
-  - [`impureEnvVars`]{#adv-attr-impureEnvVars}\
-    This attribute allows you to specify a list of environment variables
-    that should be passed from the environment of the calling user to
-    the builder. Usually, the environment is cleared completely when the
-    builder is executed, but with this attribute you can allow specific
-    environment variables to be passed unmodified. For example,
-    `fetchurl` in Nixpkgs has the line
-
-    ```nix
-    impureEnvVars = [ "http_proxy" "https_proxy" ... ];
-    ```
-
-    to make it use the proxy server configuration specified by the user
-    in the environment variables `http_proxy` and friends.
-
-    This attribute is only allowed in [fixed-output derivations][fixed-output derivation],
-    where impurities such as these are okay since (the hash
-    of) the output is known in advance. It is ignored for all other
-    derivations.
-
-    > **Warning**
-    >
-    > `impureEnvVars` implementation takes environment variables from
-    > the current builder process. When a daemon is building its
-    > environmental variables are used. Without the daemon, the
-    > environmental variables come from the environment of the
-    > `nix-build`.
-
-    If the [`configurable-impure-env` experimental
-    feature](@docroot@/development/experimental-features.md#xp-feature-configurable-impure-env)
-    is enabled, these environment variables can also be controlled
-    through the
-    [`impure-env`](@docroot@/command-ref/conf-file.md#conf-impure-env)
-    configuration setting.
-
-## Setting the derivation type
-
-As discussed in [Derivation Outputs and Types of Derivations](@docroot@/store/derivation/outputs/index.md), there are multiples kinds of derivations / kinds of derivation outputs.
-The choice of the following attributes determines which kind of derivation we are making.
-
-- [`__contentAddressed`]
-
-- [`outputHash`]
-
-- [`outputHashAlgo`]
-
-- [`outputHashMode`]
-
-The three types of derivations are chosen based on the following combinations of these attributes.
-All other combinations are invalid.
-
-- [Input-addressing derivations](@docroot@/store/derivation/outputs/input-address.md)
-
-  This is the default for `builtins.derivation`.
-  Nix only currently supports one kind of input-addressing, so no other information is needed.
-
-  `__contentAddressed = false;` may also be included, but is not needed, and will trigger the experimental feature check.
-
-- [Fixed-output derivations][fixed-output derivation]
-
-  All of [`outputHash`], [`outputHashAlgo`], and [`outputHashMode`].
-
-  <!--
-
-  `__contentAddressed` is ignored, because fixed-output derivations always content-address their outputs, by definition.
-
-  **TODO CHECK**
-
-  -->
-
-- [(Floating) content-addressing derivations](@docroot@/store/derivation/outputs/content-address.md)
-
-  Both [`outputHashAlgo`] and [`outputHashMode`], `__contentAddressed = true;`, and *not* `outputHash`.
-
-  If an output hash was given, then the derivation output would be "fixed" not "floating".
-
-Here is more information on the `output*` attributes, and what values they may be set to:
-
-  - [`outputHashMode`]{#adv-attr-outputHashMode}
-
-    This specifies how the files of a content-addressing derivation output are digested to produce a content address.
-
-    This works in conjunction with [`outputHashAlgo`](#adv-attr-outputHashAlgo).
-    Specifying one without the other is an error (unless [`outputHash` is also specified and includes its own hash algorithm as described below).
-
-    The `outputHashMode` attribute determines how the hash is computed.
-    It must be one of the following values:
-
-      - [`"flat"`](@docroot@/store/store-object/content-address.md#method-flat)
-
-        This is the default.
-
-      - [`"recursive"` or `"nar"`](@docroot@/store/store-object/content-address.md#method-nix-archive)
-
-        > **Compatibility**
-        >
-        > `"recursive"` is the traditional way of indicating this,
-        > and is supported since 2005 (virtually the entire history of Nix).
-        > `"nar"` is more clear, and consistent with other parts of Nix (such as the CLI),
-        > however support for it is only added in Nix version 2.21.
-
-      - [`"text"`](@docroot@/store/store-object/content-address.md#method-text)
-
-        > **Warning**
-        >
-        > The use of this method for derivation outputs is part of the [`dynamic-derivations`][xp-feature-dynamic-derivations] experimental feature.
-
-      - [`"git"`](@docroot@/store/store-object/content-address.md#method-git)
-
-        > **Warning**
-        >
-        > This method is part of the [`git-hashing`][xp-feature-git-hashing] experimental feature.
-
-    See [content-addressing store objects](@docroot@/store/store-object/content-address.md) for more information about the process this flag controls.
-
-  - [`outputHashAlgo`]{#adv-attr-outputHashAlgo}
-
-    This specifies the hash algorithm used to digest the [file system object] data of a content-addressing derivation output.
-
-    This works in conjunction with [`outputHashMode`](#adv-attr-outputHashAlgo).
-    Specifying one without the other is an error (unless `outputHash` is also specified and includes its own hash algorithm as described below).
-
-    The `outputHashAlgo` attribute specifies the hash algorithm used to compute the hash.
-    It can currently be `"blake3"`, `"sha1"`, `"sha256"`, `"sha512"`, or `null`.
-
-    `outputHashAlgo` can only be `null` when `outputHash` follows the SRI format, because in that case the choice of hash algorithm is determined by `outputHash`.
-
-  - [`outputHash`]{#adv-attr-outputHash}
-
-    This will specify the output hash of the single output of a [fixed-output derivation].
-
-    The `outputHash` attribute must be a string containing the hash in either hexadecimal or "nix32" encoding, or following the format for integrity metadata as defined by [SRI](https://www.w3.org/TR/SRI/).
-    The ["nix32" encoding](@docroot@/protocols/nix32.md) is Nix's variant of base-32 encoding.
-
-    > **Note**
-    >
-    > The [`convertHash`](@docroot@/language/builtins.md#builtins-convertHash) function shows how to convert between different encodings.
-    > The [`nix-hash` command](../command-ref/nix-hash.md) has information about obtaining the hash for some contents, as well as converting to and from encodings.
-
-  - [`__contentAddressed`]{#adv-attr-__contentAddressed}
-
-    > **Warning**
-    >
-    > This attribute is part of an [experimental feature](@docroot@/development/experimental-features.md).
-    >
-    > To use this attribute, you must enable the
-    > [`ca-derivations`][xp-feature-ca-derivations] experimental feature.
-    > For example, in [nix.conf](../command-ref/conf-file.md) you could add:
-    >
-    > ```
-    > extra-experimental-features = ca-derivations
-    > ```
-
-    This is a boolean with a default of `false`.
-    It determines whether the derivation is floating content-addressing.
-
-[`__contentAddressed`]: #adv-attr-__contentAddressed
-[`outputHash`]: #adv-attr-outputHash
-[`outputHashAlgo`]: #adv-attr-outputHashAlgo
-[`outputHashMode`]: #adv-attr-outputHashMode
-
-[fixed-output derivation]: @docroot@/glossary.md#gloss-fixed-output-derivation
-[file system object]: @docroot@/store/file-system-object.md
-[store object]: @docroot@/store/store-object.md
-[xp-feature-dynamic-derivations]: @docroot@/development/experimental-features.md#xp-feature-dynamic-derivations
-[xp-feature-git-hashing]: @docroot@/development/experimental-features.md#xp-feature-git-hashing

doc/manual/source/language/builtins-prefix.md

@@ -1,34 +0,0 @@
-# Built-ins
-
-This section lists the values and functions built into the Nix language evaluator.
-All built-ins are available through the global [`builtins`](#builtins-builtins) constant.
-
-Some built-ins are also exposed directly in the global scope:
-
-- [`derivation`](#builtins-derivation)
-- `derivationStrict`
-- [`abort`](#builtins-abort)
-- [`baseNameOf`](#builtins-baseNameOf)
-- [`break`](#builtins-break)
-- [`dirOf`](#builtins-dirOf)
-- [`false`](#builtins-false)
-- [`fetchGit`](#builtins-fetchGit)
-- `fetchMercurial`
-- [`fetchTarball`](#builtins-fetchTarball)
-- [`fetchTree`](#builtins-fetchTree)
-- [`fromTOML`](#builtins-fromTOML)
-- [`import`](#builtins-import)
-- [`isNull`](#builtins-isNull)
-- [`map`](#builtins-map)
-- [`null`](#builtins-null)
-- [`placeholder`](#builtins-placeholder)
-- [`removeAttrs`](#builtins-removeAttrs)
-- [`scopedImport`](#builtins-scopedImport)
-- [`throw`](#builtins-throw)
-- [`toString`](#builtins-toString)
-- [`true`](#builtins-true)
-
-<dl>
-  <dt id="builtins-derivation"><a href="#builtins-derivation"><code>derivation <var>attrs</var></code></a></dt>
-  <dd><p><var>derivation</var> is described in
-         <a href="derivations.md">its own section</a>.</p></dd>

doc/manual/source/language/derivations.md

@@ -1,237 +0,0 @@
-# Derivations
-
-The most important built-in function is `derivation`, which is used to describe a single store-layer [store derivation].
-Consult the [store chapter](@docroot@/store/derivation/index.md) for what a store derivation is;
-this section just concerns how to create one from the Nix language.
-
-This builtin function takes as input an attribute set, the attributes of which specify the inputs to the process.
-It outputs an attribute set, and produces a [store derivation] as a side effect of evaluation.
-
-[store derivation]: @docroot@/glossary.md#gloss-store-derivation
-
-## Input attributes
-
-### Required
-
-- [`name`]{#attr-name} ([String](@docroot@/language/types.md#type-string))
-
-  A symbolic name for the derivation.
-  See [derivation outputs](@docroot@/store/derivation/outputs/index.md#outputs) for what this is affects.
-
-  [store path]: @docroot@/store/store-path.md
-
-  > **Example**
-  >
-  > ```nix
-  > derivation {
-  >   name = "hello";
-  >   # ...
-  > }
-  > ```
-  >
-  > The derivation's path will be `/nix/store/<hash>-hello.drv`.
-  > The [output](#attr-outputs) paths will be of the form `/nix/store/<hash>-hello[-<output>]`
-
-- [`system`]{#attr-system} ([String](@docroot@/language/types.md#type-string))
-
-  See [system](@docroot@/store/derivation/index.md#system).
-
-  > **Example**
-  >
-  > Declare a derivation to be built on a specific system type:
-  >
-  > ```nix
-  > derivation {
-  >   # ...
-  >   system = "x86_64-linux";
-  >   # ...
-  > }
-  > ```
-
-  > **Example**
-  >
-  > Declare a derivation to be built on the system type that evaluates the expression:
-  >
-  > ```nix
-  > derivation {
-  >   # ...
-  >   system = builtins.currentSystem;
-  >   # ...
-  > }
-  > ```
-  >
-  > [`builtins.currentSystem`](@docroot@/language/builtins.md#builtins-currentSystem) has the value of the [`system` configuration option], and defaults to the system type of the current Nix installation.
-
-- [`builder`]{#attr-builder} ([Path](@docroot@/language/types.md#type-path) | [String](@docroot@/language/types.md#type-string))
-
-  See [builder](@docroot@/store/derivation/index.md#builder).
-
-  > **Example**
-  >
-  > Use the file located at `/bin/bash` as the builder executable:
-  >
-  > ```nix
-  > derivation {
-  >   # ...
-  >   builder = "/bin/bash";
-  >   # ...
-  > };
-  > ```
-
-  <!-- -->
-
-  > **Example**
-  >
-  > Copy a local file to the Nix store for use as the builder executable:
-  >
-  > ```nix
-  > derivation {
-  >   # ...
-  >   builder = ./builder.sh;
-  >   # ...
-  > };
-  > ```
-
-  <!-- -->
-
-  > **Example**
-  >
-  > Use a file from another derivation as the builder executable:
-  >
-  > ```nix
-  > let pkgs = import <nixpkgs> {}; in
-  > derivation {
-  >   # ...
-  >   builder = "${pkgs.python}/bin/python";
-  >   # ...
-  > };
-  > ```
-
-### Optional
-
-- [`args`]{#attr-args} ([List](@docroot@/language/types.md#type-list) of [String](@docroot@/language/types.md#type-string))
-
-  Default: `[ ]`
-
-  See [args](@docroot@/store/derivation/index.md#args).
-
-  > **Example**
-  >
-  > Pass arguments to Bash to interpret a shell command:
-  >
-  > ```nix
-  > derivation {
-  >   # ...
-  >   builder = "/bin/bash";
-  >   args = [ "-c" "echo hello world > $out" ];
-  >   # ...
-  > };
-  > ```
-
-- [`outputs`]{#attr-outputs} ([List](@docroot@/language/types.md#type-list) of [String](@docroot@/language/types.md#type-string))
-
-  Default: `[ "out" ]`
-
-  Symbolic outputs of the derivation.
-  Each output name is passed to the [`builder`](#attr-builder) executable as an environment variable with its value set to the corresponding [store path].
-
-  By default, a derivation produces a single output called `out`.
-  However, derivations can produce multiple outputs.
-  This allows the associated [store objects](@docroot@/store/store-object.md) and their [closures](@docroot@/glossary.md#gloss-closure) to be copied or garbage-collected separately.
-
-  > **Example**
-  >
-  > Imagine a library package that provides a dynamic library, header files, and documentation.
-  > A program that links against such a library doesn’t need the header files and documentation at runtime, and it doesn’t need the documentation at build time.
-  > Thus, the library package could specify:
-  >
-  > ```nix
-  > derivation {
-  >   # ...
-  >   outputs = [ "lib" "dev" "doc" ];
-  >   # ...
-  > }
-  > ```
-  >
-  > This will cause Nix to pass environment variables `lib`, `dev`, and `doc` to the builder containing the intended store paths of each output.
-  > The builder would typically do something like
-  >
-  > ```bash
-  > ./configure \
-  >   --libdir=$lib/lib \
-  >   --includedir=$dev/include \
-  >   --docdir=$doc/share/doc
-  > ```
-  >
-  > for an Autoconf-style package.
-
-  The name of an output is combined with the name of the derivation to create the name part of the output's store path, unless it is `out`, in which case just the name of the derivation is used.
-
-  > **Example**
-  >
-  >
-  > ```nix
-  > derivation {
-  >   name = "example";
-  >   outputs = [ "lib" "dev" "doc" "out" ];
-  >   # ...
-  > }
-  > ```
-  >
-  > The store derivation path will be `/nix/store/<hash>-example.drv`.
-  > The output paths will be
-  > - `/nix/store/<hash>-example-lib`
-  > - `/nix/store/<hash>-example-dev`
-  > - `/nix/store/<hash>-example-doc`
-  > - `/nix/store/<hash>-example`
-
-  You can refer to each output of a derivation by selecting it as an attribute.
-  The first element of `outputs` determines the *default output* and ends up at the top-level.
-
-  > **Example**
-  >
-  > Select an output by attribute name:
-  >
-  > ```nix
-  > let
-  >   myPackage = derivation {
-  >     name = "example";
-  >     outputs = [ "lib" "dev" "doc" "out" ];
-  >     # ...
-  >   };
-  > in myPackage.dev
-  > ```
-  >
-  > Since `lib` is the first output, `myPackage` is equivalent to `myPackage.lib`.
-
-  <!-- FIXME: refer to the output attributes when we have one -->
-
-- See [Advanced Attributes](./advanced-attributes.md) for more, infrequently used, optional attributes.
-
-  <!-- FIXME: This should be moved here -->
-
-- Every other attribute is passed as an environment variable to the builder.
-  Attribute values are translated to environment variables as follows:
-
-    - Strings are passed unchanged.
-
-    - Integral numbers are converted to decimal notation.
-
-    - Floating point numbers are converted to simple decimal or scientific notation with a preset precision.
-
-    - A *path* (e.g., `../foo/sources.tar`) causes the referenced file
-      to be copied to the store; its location in the store is put in
-      the environment variable. The idea is that all sources should
-      reside in the Nix store, since all inputs to a derivation should
-      reside in the Nix store.
-
-    - A *derivation* causes that derivation to be built prior to the
-      present derivation. The environment variable is set to the [store path] of the derivation's default [output](#attr-outputs).
-
-    - Lists of the previous types are also allowed. They are simply
-      concatenated, separated by spaces.
-
-    - `true` is passed as the string `1`, `false` and `null` are
-      passed as an empty string.
-
-<!-- FIXME: add a section on output attributes -->

doc/manual/source/language/evaluation.md

@@ -1,121 +0,0 @@
-# Evaluation
-
-Evaluation is the process of turning a Nix expression into a [Nix value](types.md).
-
-This happens by a number of rules, such as:
-- Constructing values from literals. 
-  For example the number literal `1` is turned into the number value `1`.
-- Applying operators
-  For example the addition operator `+` is applied to two number values to produce a new number value.
-- Applying built-in functions
-  For example the expression `builtins.isInt 1` is evaluated to `true`.
-- Applying user-defined functions
-  For example the expression `(x: x + 1) 10` can[*](#laziness) be thought of rewriting `x` in the function body to the argument, `10 + 1`, which is then evaluated to `11`.
-
-These rules are applied as needed, driven by the specific use of the expression. For example, this can occur in the Nix command line interface or interactively with the [repl (read-eval-print loop)](@docroot@/command-ref/new-cli/nix3-repl.md), which is a useful tool when learning about evaluation.
-
-# Details
-
-## Values {#values}
-
-Nix values can be thought of as a subset of Nix expressions.
-For example, the expression `1 + 2` is not a value, because it can be reduced to `3`. The expression `3` is a value, because it cannot be reduced any further.
-
-Evaluation normally happens by applying rules to the "head" of the expression, which is the outermost part of the expression. The head of an expression like `[ 1 2 ]` is the list literal (`[ a1 a2 ]`), for `1 + 2` it is the addition operator (`+`), and for `f 1` it is the function application "operator" (` `).
-
-After applying all possible rules to the head until no rules can be applied, the expression is in "weak head normal form" (WHNF). This means that the outermost constructor of the expression is evaluated, but the inner values may or may not be. "Weak" only signifies that the expression may be a function. This is an historical or academic artifact, and Nix has no use for the non-weak "head normal form".
-
-## Laziness and thunks {#laziness}
-
-The Nix language implements _call by need_ (as opposed to _call by value_ or _call by reference_). <!-- No wikipedia link, which would be a huge distraction. --> Call by need is commonly known as laziness in functional programming, as it is a specific implementation of the concept where evaluation is deferred until the result is required, aiming to only evaluate the parts of an expression that are needed to produce the final result.
-
-Furthermore, the result of evaluation is preserved, in values, in `let` bindings, in function _parameters_, which behave a lot like `let` bindings, but with the notable exception of function _calls_. Results of function calls rely on being put into `let` bindings, etc to be reused. <!-- which would be prohibitively expensive and too strict, or we wouldn't have a cache key for the argument -->
-
-When discussing the process of evaluation in lower level terms, we may define values not as a subset of expressions, but separately, where each "value" is either a data constructor, a function or a _thunk_. A thunk is a delayed computation, represented by an expression reference and a "closure" &ndash; the values for the lexical scope around the delayed expression.
-
-As a user of the language, you generally don't have to think about thunks, as they are not part of the language semantics, but you may encounter them in the repl, in the [C API] or in discussions.
-
-## Strictness
-
-Instead of thinking about thunks, it is often more productive to think in terms of _strictness_.
-This term is used in functional programming to refer to the opposite of laziness, i.e. not just for something like error propagation. It refers to the need to evaluate certain expressions before evaluation can produce any result.
-
-Statements about strictness usually implicitly refer to weak head normal form.
-For example, we can say that the following function is strict in its argument:
-
-```nix
-x: isAttrs x || isFunction x
-```
-
-The above function must be strict in its argument `x` because determining its type requires evaluating `x` to at least some degree.
-
-The following function is not strict in its argument:
-
-```nix
-x: { isOk = isAttrs x || isFunction x; }
-```
-
-It is not strict, because it can return the attribute set before evaluating `x`.
-The attribute value for `isOk` _is_ strict in `x`.
-
-A function with a _set pattern_ is always strict in its argument, as a consequence of checking the argument's type and/or attribute names:
-
-```nix
-let f = { ... }: "ok";
-in f (throw "kablam")
-=> error: kablam
-```
-
-However, a set pattern does not add any strictness beyond WHNF of the attribute set argument.
-
-```nix
-let f = orig@{ x, ... }: "ok";
-in f { x = throw "error"; y = throw "error"; }
-=> "ok"
-```
-
-## Evaluation order
-
-The order in which expressions are evaluated is generally unspecified, because it does not affect successful evaluation outcomes.
-This allows more freedom for the evaluator to evolve and to evaluate efficiently.
-
-Data dependencies naturally impose some ordering constraints: a value cannot be used before it is computed.
-Beyond these constraints, the evaluator is free to choose any order.
-
-The order in which side effects such as [`builtins.trace`](@docroot@/language/builtins.md#builtins-trace) output occurs is not defined, but may be expected to follow data dependencies. <!-- we may want to be more specific about this. -->
-
-In a lazy language, evaluation order is often opposite to expectations from strict languages.
-For example, in `let wrap = x: { wrapped = x; }; in wrap (1 + 2)`, the function body produces a result (`{ wrapped = ...; }`) *before* evaluating `x`.
-
-## Infinite recursion and stack overflow
-
-During evaluation, two types of errors can occur when expressions reference themselves or call functions too deeply:
-
-### Infinite recursion
-
-This error occurs when a value depends on itself through a cycle, making it impossible to compute.
-
-```nix
-let x = x; in x
-=> error: infinite recursion encountered
-```
-
-Infinite recursion happens at the value level when evaluating an expression requires evaluating the same expression again.
-
-Despite the name, infinite recursion is cheap to compute and does not involve a stack overflow.
-The cycle is finite and fairly easy to detect.
-
-### Stack overflow
-
-This error occurs when the call depth exceeds the maximum allowed limit.
-
-```nix
-let f = x: f (x + 1);
-in f 0
-=> error: stack overflow; max-call-depth exceeded
-```
-
-Stack overflow happens when too many function calls are nested without returning.
-The maximum call depth is controlled by the [`max-call-depth` setting](@docroot@/command-ref/conf-file.md#conf-max-call-depth).
-
-[C API]: @docroot@/c-api.md

doc/manual/source/language/index.md

@@ -1,638 +0,0 @@
-# Nix Language
-
-The Nix language is designed for conveniently creating and composing [derivations](@docroot@/glossary.md#gloss-derivation) – precise descriptions of how contents of existing files are used to derive new files.
-
-> **Tip**
->
-> These pages are written as a reference.
-> If you are learning Nix, nix.dev has a good [introduction to the Nix language](https://nix.dev/tutorials/nix-language).
-
-The language is:
-
-- *domain-specific*
-
-  The Nix language is purpose-built for working with text files.
-  Its most characteristic features are:
-
-  - [File system path primitives](@docroot@/language/types.md#type-path), for accessing source files
-  - [Indented strings](@docroot@/language/string-literals.md) and [string interpolation](@docroot@/language/string-interpolation.md), for creating file contents
-  - [Strings with contexts](@docroot@/language/string-context.md), for transparently linking files
-
-  It comes with [built-in functions](@docroot@/language/builtins.md) to integrate with the [Nix store](@docroot@/store/index.md), which manages files and enables [realising](@docroot@/glossary.md#gloss-realise) derivations declared in the Nix language.
-
-- *declarative*
-
-  There is no notion of executing sequential steps.
-  Dependencies between operations are established only through data.
-
-- *pure*
-
-  Values cannot change during computation.
-  Functions always produce the same output if their input does not change.
-
-- *functional*
-
-  Functions are like any other value.
-  Functions can be assigned to names, taken as arguments, or returned by functions.
-
-- *lazy*
-
-  Values are only computed when they are needed.
-
-- *dynamically typed*
-
-  Type errors are only detected when expressions are evaluated.
-
-# Overview
-
-This is an incomplete overview of language features, by example.
-
-<table>
- <tr>
-  <th>
-   Example
-  </th>
-  <th>
-   Description
-  </th>
- </tr>
- <tr>
-  <td>
-
-
-   *Basic values ([primitives](@docroot@/language/types.md#primitives))*
-
-
-  </td>
-  <td>
-
-
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `"hello world"`
-
-  </td>
-  <td>
-
-   A [string](@docroot@/language/types.md#type-string)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   ```
-   ''
-     multi
-      line
-       string
-   ''
-   ```
-
-  </td>
-  <td>
-
-   <!-- FIXME: using two no-break spaces, because apparently mdBook swallows the second regular space! -->
-   A multi-line string. Strips common prefixed whitespace. Evaluates to `"multi\n line\n  string"`.
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `# Explanation`
-
-  </td>
-  <td>
-
-   A [comment](@docroot@/language/syntax.md#comments).
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `"hello ${ { a = "world"; }.a }"`
-
-   `"1 2 ${toString 3}"`
-
-   `"${pkgs.bash}/bin/sh"`
-
-  </td>
-  <td>
-
-   [String interpolation](@docroot@/language/string-interpolation.md) (expands to `"hello world"`, `"1 2 3"`, `"/nix/store/<hash>-bash-<version>/bin/sh"`)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `true`, `false`
-
-  </td>
-  <td>
-
-   [Booleans](@docroot@/language/types.md#type-bool)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `null`
-
-  </td>
-  <td>
-
-   [Null](@docroot@/language/types.md#type-null) value
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `123`
-
-  </td>
-  <td>
-
-   An [integer](@docroot@/language/types.md#type-int)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `3.141`
-
-  </td>
-  <td>
-
-   A [floating point number](@docroot@/language/types.md#type-float)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `/etc`
-
-  </td>
-  <td>
-
-   An absolute [path](@docroot@/language/types.md#type-path)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `./foo.png`
-
-  </td>
-  <td>
-
-   A [path](@docroot@/language/types.md#type-path) relative to the file containing this Nix expression
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `~/.config`
-
-  </td>
-  <td>
-
-   A home [path](@docroot@/language/types.md#type-path). Evaluates to the `"<user's home directory>/.config"`.
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `<nixpkgs>`
-
-  </td>
-  <td>
-
-   A [lookup path](@docroot@/language/constructs/lookup-path.md) for Nix files. Value determined by [`$NIX_PATH` environment variable](../command-ref/env-common.md#env-NIX_PATH).
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   *Compound values*
-
-  </td>
-  <td>
-
-
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `{ x = 1; y = 2; }`
-
-  </td>
-  <td>
-
-   An [attribute set](@docroot@/language/types.md#type-attrs) with attributes named `x` and `y`
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `{ foo.bar = 1; }`
-
-  </td>
-  <td>
-
-   A nested set, equivalent to `{ foo = { bar = 1; }; }`
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `rec { x = "foo"; y = x + "bar"; }`
-
-  </td>
-  <td>
-
-   A [recursive set](@docroot@/language/syntax.md#recursive-sets), equivalent to `{ x = "foo"; y = "foobar"; }`.
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `[ "foo" "bar" "baz" ]`
-
-   `[ 1 2 3 ]`
-
-   `[ (f 1) { a = 1; b = 2; } [ "c" ] ]`
-
-  </td>
-  <td>
-
-   [Lists](@docroot@/language/types.md#type-list) with three elements.
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   *Operators*
-
-  </td>
-  <td>
-
-
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `"foo" + "bar"`
-
-  </td>
-  <td>
-
-   String concatenation
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `1 + 2`
-
-  </td>
-  <td>
-
-   Integer addition
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `"foo" == "f" + "oo"`
-
-  </td>
-  <td>
-
-   Equality test (evaluates to `true`)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `"foo" != "bar"`
-
-  </td>
-  <td>
-
-   Inequality test (evaluates to `true`)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `!true`
-
-  </td>
-  <td>
-
-   Boolean negation
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `{ x = 1; y = 2; }.x`
-
-  </td>
-  <td>
-
-   [Attribute selection](@docroot@/language/types.md#type-attrs) (evaluates to `1`)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `{ x = 1; y = 2; }.z or 3`
-
-  </td>
-  <td>
-
-   [Attribute selection](@docroot@/language/types.md#type-attrs) with default (evaluates to `3`)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `{ x = 1; y = 2; } // { z = 3; }`
-
-  </td>
-  <td>
-
-   Merge two sets (attributes in the right-hand set taking precedence)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   *Control structures*
-
-  </td>
-  <td>
-
-
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `if 1 + 1 == 2 then "yes!" else "no!"`
-
-  </td>
-  <td>
-
-   [Conditional expression](@docroot@/language/syntax.md#conditionals).
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `assert 1 + 1 == 2; "yes!"`
-
-  </td>
-  <td>
-
-   [Assertion](@docroot@/language/syntax.md#assertions) check (evaluates to `"yes!"`).
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `let x = "foo"; y = "bar"; in x + y`
-
-  </td>
-  <td>
-
-   Variable definition. See [`let`-expressions](@docroot@/language/syntax.md#let-expressions).
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `with builtins; head [ 1 2 3 ]`
-
-  </td>
-  <td>
-
-   Add all attributes from the given set to the scope (evaluates to `1`).
-
-   See [`with`-expressions](@docroot@/language/syntax.md#with-expressions) for details and shadowing caveats.
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `inherit pkgs src;`
-
-  </td>
-  <td>
-
-   Adds the variables to the current scope (attribute set or `let` binding).
-   Desugars to `pkgs = pkgs; src = src;`.
-   See [Inheriting attributes](@docroot@/language/syntax.md#inheriting-attributes).
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `inherit (pkgs) lib stdenv;`
-
-  </td>
-  <td>
-
-   Adds the attributes, from the attribute set in parentheses, to the current scope (attribute set or `let` binding).
-   Desugars to `lib = pkgs.lib; stdenv = pkgs.stdenv;`.
-   See [Inheriting attributes](@docroot@/language/syntax.md#inheriting-attributes).
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   *[Functions](@docroot@/language/syntax.md#functions) (lambdas)*
-
-  </td>
-  <td>
-
-
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `x: x + 1`
-
-  </td>
-  <td>
-
-   A [function](@docroot@/language/syntax.md#functions) that expects an integer and returns it increased by 1.
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `x: y: x + y`
-
-  </td>
-  <td>
-
-   Curried [function](@docroot@/language/syntax.md#functions), equivalent to `x: (y: x + y)`. Can be used like a function that takes two arguments and returns their sum.
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `(x: x + 1) 100`
-
-  </td>
-  <td>
-
-   A [function](@docroot@/language/syntax.md#functions) call (evaluates to 101)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `let inc = x: x + 1; in inc (inc (inc 100))`
-
-  </td>
-  <td>
-
-   A [function](@docroot@/language/syntax.md#functions) bound to a variable and subsequently called by name (evaluates to 103)
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `{ x, y }: x + y`
-
-  </td>
-  <td>
-
-   A [function](@docroot@/language/syntax.md#functions) that expects a set with required attributes `x` and `y` and concatenates them
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `{ x, y ? "bar" }: x + y`
-
-  </td>
-  <td>
-
-   A [function](@docroot@/language/syntax.md#functions) that expects a set with required attribute `x` and optional `y`, using `"bar"` as default value for `y`
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `{ x, y, ... }: x + y`
-
-  </td>
-  <td>
-
-   A [function](@docroot@/language/syntax.md#functions) that expects a set with required attributes `x` and `y` and ignores any other attributes
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `{ x, y } @ args: x + y`
-
-   `args @ { x, y }: x + y`
-
-  </td>
-  <td>
-
-   A [function](@docroot@/language/syntax.md#functions) that expects a set with required attributes `x` and `y`, and binds the whole set to `args`
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   *Built-in functions*
-
-  </td>
-  <td>
-
-
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `import ./foo.nix`
-
-  </td>
-  <td>
-
-   Load and return Nix expression in given file.
-   See [import](@docroot@/language/builtins.md#builtins-import).
-
-  </td>
- </tr>
- <tr>
-  <td>
-
-   `map (x: x + x) [ 1 2 3 ]`
-
-  </td>
-  <td>
-
-   Apply a function to every element of a list (evaluates to `[ 2 4 6 ]`).
-   See [`map`](@docroot@/language/builtins.md#builtins-map).
-
-  </td>
- </tr>
-</table>

doc/manual/source/language/meson.build

@@ -1,14 +0,0 @@
-builtins_md = custom_target(
-  command : [ python.full_path(), '@INPUT0@', '@OUTPUT@', '--' ] + nix_eval_for_docs + [
-    '--expr', '(builtins.readFile @INPUT3@) + import @INPUT1@ (builtins.fromJSON (builtins.readFile ./@INPUT2@)) + (builtins.readFile @INPUT4@)',
-  ],
-  input : [
-    '../../remove_before_wrapper.py',
-    '../../generate-builtins.nix',
-    language_json,
-    'builtins-prefix.md',
-    'builtins-suffix.md',
-  ],
-  output : 'builtins.md',
-  env : nix_env_for_docs,
-)

doc/manual/source/language/operators.md

@@ -1,315 +0,0 @@
-# Operators
-
-| Name                                   | Syntax                                     | Associativity | Precedence |
-|----------------------------------------|--------------------------------------------|---------------|------------|
-| [Attribute selection]                  | *attrset* `.` *attrpath* \[ `or` *expr* \] | none          | 1          |
-| [Function application]                 | *func* *expr*                              | left          | 2          |
-| [Arithmetic negation][arithmetic]      | `-` *number*                               | none          | 3          |
-| [Has attribute]                        | *attrset* `?` *attrpath*                   | none          | 4          |
-| List concatenation                     | *list* `++` *list*                         | right         | 5          |
-| [Multiplication][arithmetic]           | *number* `*` *number*                      | left          | 6          |
-| [Division][arithmetic]                 | *number* `/` *number*                      | left          | 6          |
-| [Subtraction][arithmetic]              | *number* `-` *number*                      | left          | 7          |
-| [Addition][arithmetic]                 | *number* `+` *number*                      | left          | 7          |
-| [String concatenation]                 | *string* `+` *string*                      | left          | 7          |
-| [Path concatenation]                   | *path* `+` *path*                          | left          | 7          |
-| [Path and string concatenation]        | *path* `+` *string*                        | left          | 7          |
-| [String and path concatenation]        | *string* `+` *path*                        | left          | 7          |
-| Logical negation (`NOT`)               | `!` *bool*                                 | none          | 8          |
-| [Update]                               | *attrset* `//` *attrset*                   | right         | 9          |
-| [Less than][Comparison]                | *expr* `<` *expr*                          | none          | 10         |
-| [Less than or equal to][Comparison]    | *expr* `<=` *expr*                         | none          | 10         |
-| [Greater than][Comparison]             | *expr* `>` *expr*                          | none          | 10         |
-| [Greater than or equal to][Comparison] | *expr* `>=` *expr*                         | none          | 10         |
-| [Equality]                             | *expr* `==` *expr*                         | none          | 11         |
-| Inequality                             | *expr* `!=` *expr*                         | none          | 11         |
-| [Logical conjunction] (`AND`)          | *bool* `&&` *bool*                         | left          | [12](#precedence-and-disjunctive-normal-form)         |
-| [Logical disjunction] (`OR`)           | *bool* <code>\|\|</code> *bool*            | left          | [13](#precedence-and-disjunctive-normal-form)         |
-| [Logical implication]                  | *bool* `->` *bool*                         | right         | 14         |
-| [Pipe operator] (experimental)         | *expr* `\|>` *func*                        | left          | 15         |
-| [Pipe operator] (experimental)         | *func* `<\|` *expr*                        | right         | 15         |
-
-[string]: ./types.md#type-string
-[path]: ./types.md#type-path
-[number]: ./types.md#type-float
-[list]: ./types.md#type-list
-[attribute set]: ./types.md#type-attrs
-
-<!-- TODO(@rhendric, #10970): ^ rationalize number -> int/float -->
-
-## Attribute selection
-
-> **Syntax**
->
-> *attrset* `.` *attrpath* \[ `or` *expr* \]
-
-Select the attribute denoted by attribute path *attrpath* from [attribute set] *attrset*.
-If the attribute doesn’t exist, return the *expr* after `or` if provided, otherwise abort evaluation.
-
-[Attribute selection]: #attribute-selection
-
-## Function application
-
-> **Syntax**
->
-> *func* *expr*
-
-Apply the callable value *func* to the argument *expr*. Note the absence of any visible operator symbol.
-A callable value is either:
-- a [user-defined function][function]
-- a [built-in][builtins] function
-- an attribute set with a [`__functor` attribute](./syntax.md#attr-__functor)
-
-> **Warning**
->
-> [List][list] items are also separated by whitespace, which means that function calls in list items must be enclosed by parentheses.
-
-## Has attribute
-
-> **Syntax**
->
-> *attrset* `?` *attrpath*
-
-Test whether [attribute set] *attrset* contains the attribute denoted by *attrpath*.
-The result is a [Boolean] value.
-
-See also: [`builtins.hasAttr`](@docroot@/language/builtins.md#builtins-hasAttr)
-
-[Boolean]: ./types.md#type-bool
-
-[Has attribute]: #has-attribute
-
-After evaluating *attrset* and *attrpath*, the computational complexity is O(log(*n*)) for *n* attributes in the *attrset*
-
-## Arithmetic
-
-Numbers will retain their type unless mixed with other numeric types:
-Pure integer operations will always return integers, whereas any operation involving at least one floating point number returns a floating point number.
-
-Evaluation of the following numeric operations throws an evaluation error:
-- Division by zero
-- Integer overflow, that is, any operation yielding a result outside of the representable range of [Nix language integers](./syntax.md#number-literal)
-
-See also [Comparison] and [Equality].
-
-The `+` operator is overloaded to also work on strings and paths.
-
-[arithmetic]: #arithmetic
-
-## String concatenation
-
-> **Syntax**
->
-> *string* `+` *string*
-
-Concatenate two [strings][string] and merge their [string contexts](./string-context.md).
-
-[String concatenation]: #string-concatenation
-
-## Path concatenation
-
-> **Syntax**
->
-> *path* `+` *path*
-
-Concatenate two [paths][path].
-The result is a path.
-
-[Path concatenation]: #path-concatenation
-
-## Path and string concatenation
-
-> **Syntax**
->
-> *path* + *string*
-
-Concatenate *[path]* with *[string]*.
-The result is a path.
-
-> **Note**
->
-> The string must not have a [string context](./string-context.md) that refers to a [store path].
-
-[Path and string concatenation]: #path-and-string-concatenation
-
-## String and path concatenation
-
-> **Syntax**
->
-> *string* + *path*
-
-Concatenate *[string]* with *[path]*.
-The result is a string.
-
-> **Important**
->
-> The file or directory at *path* must exist and is copied to the [store].
-> The path appears in the result as the corresponding [store path].
-
-[store path]: @docroot@/store/store-path.md
-[store]: @docroot@/glossary.md#gloss-store
-
-[String and path concatenation]: #string-and-path-concatenation
-
-## Update
-
-> **Syntax**
->
-> *attrset1* // *attrset2*
-
-Update [attribute set] *attrset1* with names and values from *attrset2*.
-
-The returned attribute set will have all of the attributes in *attrset1* and *attrset2*.
-If an attribute name is present in both, the attribute value from the latter is taken.
-
-This operator is [strict](@docroot@/language/evaluation.md#strictness) in both *attrset1* and *attrset2*.
-That means that both arguments are evaluated to [weak head normal form](@docroot@/language/evaluation.md#values), so the attribute sets themselves are evaluated, but their attribute values are not evaluated.
-
-[Update]: #update
-
-## Comparison
-
-Comparison is
-
-- [arithmetic] for [numbers][number]
-- lexicographic for [strings][string] and [paths][path]
-- item-wise lexicographic for [lists][list]:
-  elements at the same index in both lists are compared according to their type and skipped if they are equal.
-
-All comparison operators are implemented in terms of `<`, and the following equivalencies hold:
-
-| comparison   | implementation        |
-|--------------|-----------------------|
-| *a* `<=` *b* | `! (` *b* `<` *a* `)` |
-| *a* `>`  *b* |       *b* `<` *a*     |
-| *a* `>=` *b* | `! (` *a* `<` *b* `)` |
-
-[Comparison]: #comparison
-
-## Equality
-
-- [Attribute sets][attribute set] are compared first by attribute names and then by items until a difference is found.
-- [Lists][list] are compared first by length and then by items until a difference is found.
-- Comparison of distinct [functions][function] returns `false`, but identical functions may be subject to [value identity optimization](#value-identity-optimization).
-- Numbers are type-compatible, see [arithmetic] operators.
-- Floating point numbers only differ up to a limited precision.
-
-The `==` operator is [strict](@docroot@/language/evaluation.md#strictness) in both arguments; when comparing composite types ([attribute sets][attribute set] and [lists][list]), it is partially strict in their contained values: they are evaluated until a difference is found. <!-- this is woefully underspecified, affecting which expressions evaluate correctly; not just "ordering" or error messages. -->
-
-### Value identity optimization
-
-Nix performs equality comparisons of nested values by pointer equality or more abstractly, _identity_.
-Nix semantics ideally do not assign a unique identity to values as they are created, but equality is an exception to this rule.
-The disputable benefit of this is that it is more efficient, and it allows cyclical structures to be compared, e.g. `let x = { x = x; }; in x == x` evaluates to `true`.
-However, as a consequence, it makes a function equal to itself when the comparison is made in a list or attribute set, in contradiction to a simple direct comparison.
-
-[function]: ./syntax.md#functions
-
-[Equality]: #equality
-
-## Logical conjunction
-
-> **Syntax**
->
-> *bool1* `&&` *bool2*
-
-Logical AND. Equivalent to `if` *bool1* `then` *bool2* `else false`.
-
-This operator is [strict](@docroot@/language/evaluation.md#strictness) in *bool1*, but only evaluates *bool2* if *bool1* is `true`.
-
-> **Example**
->
-> ```nix
-> true && false
-> => false
->
-> false && throw "never evaluated"
-> => false
-> ```
-
-[Logical conjunction]: #logical-conjunction
-
-## Logical disjunction
-
-> **Syntax**
->
-> *bool1* `||` *bool2*
-
-Logical OR. Equivalent to `if` *bool1* `then true` `else` *bool2*.
-
-This operator is [strict](@docroot@/language/evaluation.md#strictness) in *bool1*, but only evaluates *bool2* if *bool1* is `false`.
-
-> **Example**
->
-> ```nix
-> true || false
-> => true
->
-> true || throw "never evaluated"
-> => true
-> ```
-
-[Logical disjunction]: #logical-disjunction
-
-### Precedence and disjunctive normal form
-
-The precedence of `&&` and `||` aligns with disjunctive normal form.
-Without parentheses, an expression describes multiple "permissible situations" (connected by `||`), where each situation consists of multiple simultaneous conditions (connected by `&&`).
-
-For example, `A || B && C || D && E` is parsed as `A || (B && C) || (D && E)`, describing three permissible situations: A holds, or both B and C hold, or both D and E hold.
-
-## Logical implication
-
-> **Syntax**
->
-> *bool1* `->` *bool2*
-
-Logical implication. Equivalent to `!`*bool1* `||` *bool2* (or `if` *bool1* `then` *bool2* `else true`).
-
-This operator is [strict](@docroot@/language/evaluation.md#strictness) in *bool1*, but only evaluates *bool2* if *bool1* is `true`.
-
-> **Example**
->
-> ```nix
-> true -> false
-> => false
->
-> false -> throw "never evaluated"
-> => true
-> ```
-
-[Logical implication]: #logical-implication
-
-## Pipe operators
-
-- *a* `|>` *b* is equivalent to *b* *a*
-- *a* `<|` *b* is equivalent to *a* *b*
-
-> **Example**
->
-> ```
-> nix-repl> 1 |> builtins.add 2 |> builtins.mul 3
-> 9
->
-> nix-repl> builtins.add 1 <| builtins.mul 2 <| 3
-> 7
-> ```
-
-> **Warning**
->
-> This syntax is part of an
-> [experimental feature](@docroot@/development/experimental-features.md)
-> and may change in future releases.
->
-> To use this syntax, make sure the
-> [`pipe-operators` experimental feature](@docroot@/development/experimental-features.md#xp-feature-pipe-operators)
-> is enabled.
-> For example, include the following in [`nix.conf`](@docroot@/command-ref/conf-file.md):
->
-> ```
-> extra-experimental-features = pipe-operators
-> ```
-
-[Pipe operator]: #pipe-operators
-[builtins]: ./builtins.md
-[Function application]: #function-application

doc/manual/source/meson.build

@@ -1,21 +0,0 @@
-# Process JSON schema documentation
-subdir('protocols')
-
-summary_rl_next = custom_target(
-  command : [
-    bash,
-    '-euo',
-    'pipefail',
-    '-c',
-    '''
-      if [ -e "@INPUT@" ]; then
-        echo '  - [Upcoming release](release-notes/rl-next.md)'
-      fi
-    ''',
-  ],
-  input : [
-    rl_next_generated,
-  ],
-  capture : true,
-  output : 'SUMMARY-rl-next.md',
-)