Merge pull request #13746 from NixOS/mergify/bp/2.29-maintenance/pr-13741

libexpr: Canonicalize TOML timestamps for toml11 > 4.0 (backport #13741)

.clang-format

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

.git-blame-ignore-revs

@@ -0,0 +1,4 @@
+# bulk initial re-formatting with clang-format
+0e35cd6f3e27760976ead16fb45008ece0185aad # !autorebase ./maintainers/format.sh --until-stable
+# nixfmt 1.0.0
+d6aebd884790ae82c21ef2b58a010026ce757eaf # !autorebase ./maintainers/format.sh --until-stable

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

@@ -0,0 +1,50 @@
+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
+  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-2.29.1/install"
+  github_token:
+    description: "Github token"
+    required: true
+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"
+
+        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"
+    - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31.5.1
+      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 }}

.github/workflows/ci.yml

@@ -13,8 +13,13 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0
-    - uses: cachix/install-nix-action@v31
-    - run: nix --experimental-features 'nix-command flakes' flake show --all-systems --json
+    - uses: ./.github/actions/install-nix-action
+      with:
+        dogfood: false
+        extra_nix_config:
+          experimental-features = nix-command flakes
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+    - run: nix flake show --all-systems --json
 
   tests:
     strategy:
@@ -34,8 +39,10 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0
-    - uses: cachix/install-nix-action@v31
+    - uses: ./.github/actions/install-nix-action
       with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        dogfood: false
         # The sandbox would otherwise be disabled by default on Darwin
         extra_nix_config: |
           sandbox = true
@@ -175,7 +182,12 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: ./.github/actions/install-nix-action
+        with:
+          dogfood: false
+          extra_nix_config:
+            experimental-features = nix-command flakes
+          github_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: DeterminateSystems/magic-nix-cache-action@main
       - run: |
           nix build -L \
@@ -201,6 +213,11 @@ jobs:
         with:
           repository: NixOS/flake-regressions-data
           path: flake-regressions/tests
-      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: ./.github/actions/install-nix-action
+        with:
+          dogfood: false
+          extra_nix_config:
+            experimental-features = nix-command flakes
+          github_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: DeterminateSystems/magic-nix-cache-action@main
       - run: nix build -L --out-link ./new-nix && PATH=$(pwd)/new-nix/bin:$PATH MAX_FLAKES=25 flake-regressions/eval-all.sh

.gitignore

@@ -47,3 +47,6 @@ result-*
 .DS_Store
 
 flake-regressions
+
+# direnv
+.direnv/

.version

@@ -1 +1 @@
-2.29.0
+2.29.2

doc/manual/package.nix

@@ -46,24 +46,23 @@ mkMesonDerivation (finalAttrs: {
   ];
 
   # Hack for sake of the dev shell
-  passthru.externalNativeBuildInputs =
-    [
-      meson
-      ninja
-      (lib.getBin lowdown-unsandboxed)
-      mdbook
-      mdbook-linkcheck
-      jq
-      python3
-      rsync
-      changelog-d
-    ]
-    ++ lib.optionals (!officialRelease) [
-      # 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
-    ];
+  passthru.externalNativeBuildInputs = [
+    meson
+    ninja
+    (lib.getBin lowdown-unsandboxed)
+    mdbook
+    mdbook-linkcheck
+    jq
+    python3
+    rsync
+    changelog-d
+  ]
+  ++ lib.optionals (!officialRelease) [
+    # 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
+  ];
 
   nativeBuildInputs = finalAttrs.passthru.externalNativeBuildInputs ++ [
     nix-cli

doc/manual/rl-next/outpath-and-sourceinfo-fixes.md

@@ -0,0 +1,17 @@
+---
+synopsis: Non-flake inputs now contain a `sourceInfo` attribute
+issues: 13164
+prs: 13170
+---
+
+Flakes have always a `sourceInfo` attribute which describes the source of the flake.
+The `sourceInfo.outPath` is often identical to the flake's `outPath`, however it can differ when the flake is located in a subdirectory of its source.
+
+Non-flake inputs (i.e. inputs with `flake = false`) can also be located at some path _within_ a wider source.
+This usually happens when defining a relative path input within the same source as the parent flake, e.g. `inputs.foo.url = ./some-file.nix`.
+Such relative inputs will now inherit their parent's `sourceInfo`.
+
+This also means it is now possible to use `?dir=subdir` on non-flake inputs.
+
+This iterates on the work done in 2.26 to improve relative path support ([#10089](https://github.com/NixOS/nix/pull/10089)),
+and resolves a regression introduced in 2.28 relating to nested relative path inputs ([#13164](https://github.com/NixOS/nix/issues/13164)).

doc/manual/source/command-ref/nix-channel.md

@@ -53,6 +53,11 @@ This command has the following operations:
   Download the Nix expressions of subscribed channels and create a new generation.
   Update all channels if none is specified, and only those included in *names* otherwise.
 
+  > **Note**
+  >
+  > Downloaded channel contents are cached.
+  > Use `--tarball-ttl` or the [`tarball-ttl` configuration option](@docroot@/command-ref/conf-file.md#conf-tarball-ttl) to change the validity period of cached downloads.
+
 - `--list-generations`
 
   Prints a list of all the current existing generations for the

doc/manual/source/development/building.md

@@ -215,14 +215,18 @@ nix build .#nix-everything-x86_64-w64-mingw32
 
 For historic reasons and backward-compatibility, some CPU and OS identifiers are translated as follows:
 
-| `config.guess`             | Nix                 |
-|----------------------------|---------------------|
-| `amd64`                    | `x86_64`            |
-| `i*86`                     | `i686`              |
-| `arm6`                     | `arm6l`             |
-| `arm7`                     | `arm7l`             |
-| `linux-gnu*`               | `linux`             |
-| `linux-musl*`              | `linux`             |
+| `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
 

doc/manual/source/development/contributing.md

@@ -20,8 +20,9 @@ prs: 1238
 Here's one or more paragraphs that describe the change.
 
 - It's markdown
-- Add references to the manual using @docroot@
+- Add references to the manual using [links like this](@_at_docroot@/example.md)
 ```
+<!-- for the raw markdown readers: that means using @docroot@ -->
 
 Significant changes should add the following header, which moves them to the top.
 

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

@@ -25,7 +25,7 @@ This performs the default type of installation for your platform:
 
 We recommend the multi-user installation if it supports your platform and you can authenticate with `sudo`.
 
-The installer can configured with various command line arguments and environment variables.
+The installer can be configured with various command line arguments and environment variables.
 To show available command line flags:
 
 ```console

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

@@ -73,7 +73,7 @@ Derivations can declare some infrequently used optional attributes.
 
     > **Warning**
     >
-    > If set to `true`, other advanced attributes such as [`allowedReferences`](#adv-attr-allowedReferences), [`allowedReferences`](#adv-attr-allowedReferences), [`allowedRequisites`](#adv-attr-allowedRequisites),
+    > 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.
 

doc/manual/source/language/operators.md

@@ -196,7 +196,7 @@ All comparison operators are implemented in terms of `<`, and the following equi
 
 ## Logical implication
 
-Equivalent to `!`*b1* `||` *b2*.
+Equivalent to `!`*b1* `||` *b2*  (or `if` *b1* `then` *b2* `else true`)
 
 [Logical implication]: #logical-implication
 

doc/manual/source/store/derivation/index.md

@@ -162,7 +162,7 @@ There are two types of placeholder, corresponding to the two cases where this pr
 
 > **Explanation**
 >
-> In general, we need to realise [realise] a [store object] in order to be sure to have a store object for it.
+> In general, we need to [realise] a [store object] in order to be sure to have a store object for it.
 > But for these two cases this is either impossible or impractical:
 >
 > - In the output case this is impossible:
@@ -189,7 +189,7 @@ This ensures that there is a canonical [store path] used to refer to the derivat
 > **Note**
 >
 > Currently, the canonical encoding for every derivation is the "ATerm" format,
-> but this is subject to change for types derivations which are not yet stable.
+> but this is subject to change for the types of derivations which are not yet stable.
 
 Regardless of the format used, when serializing a derivation to a store object, that store object will be content-addressed.
 
@@ -282,7 +282,7 @@ type DerivingPath = ConstantPath | OutputPath;
 
 Under this extended model, `DerivingPath`s are thus inductively built up from a root `ConstantPath`, wrapped with zero or more outer `OutputPath`s.
 
-### Encoding {#deriving-path-encoding}
+### Encoding {#deriving-path-encoding-higher-order}
 
 The encoding is adjusted in the natural way, encoding the `drv` field recursively using the same deriving path encoding.
 The result of this is that it is possible to have a chain of `^<output-name>` at the end of the final string, as opposed to just a single one.

doc/manual/source/store/derivation/outputs/content-address.md

@@ -23,7 +23,7 @@ The output spec for an output with a fixed content addresses additionally contai
 > **Design note**
 >
 > In principle, the output spec could also specify the references the store object should have, since the references and file system objects are equally parts of a content-addressed store object proper that contribute to its content-addressed.
-> However, at this time, the references are not not done because all fixed content-addressed outputs are required to have no references (including no self-reference).
+> However, at this time, the references are not done because all fixed content-addressed outputs are required to have no references (including no self-reference).
 >
 > Also in principle, rather than specifying the references and file system object data with separate hashes, a single hash that constraints both could be used.
 > This could be done with the final store path's digest, or better yet, the hash that will become the store path's digest before it is truncated.
@@ -116,7 +116,7 @@ Because the derivation output is not fixed (just like with [input addressing]),
 > (The "environment", in this case, consists of attributes such as the Operating System Nix runs atop, along with the operating-system-specific privileges that Nix has been granted.
 > Because of how conventional operating systems like macos, Linux, etc. work, granting builders *fewer* privileges may ironically require that Nix be run with *more* privileges.)
 
-That said, derivations producing floating content-addressed outputs may declare their builders as impure (like the builders of derivations producing producing fixed outputs).
+That said, derivations producing floating content-addressed outputs may declare their builders as impure (like the builders of derivations producing fixed outputs).
 This is provisionally supported as part of the [`impure-derivations`][xp-feature-impure-derivations] experimental feature.
 
 ### Compatibility negotiation
@@ -144,7 +144,7 @@ A *deterministic* content-addressing derivation should produce outputs with the
   The choice of provisional store path can be thought of as an impurity, since it is an arbitrary choice.
 
   If provisional outputs paths are deterministically chosen, we are in the first branch of part (1).
-  The builder the data it produces based on it in arbitrary ways, but this gets us closer to to [input addressing].
+  The builder the data it produces based on it in arbitrary ways, but this gets us closer to [input addressing].
   Deterministically choosing the provisional path may be considered "complete sandboxing" by removing an impurity, but this is unsatisfactory
 
   <!--

doc/manual/source/store/derivation/outputs/index.md

@@ -83,7 +83,7 @@ The rules for this are fairly concise:
 
   - A content-addressing derivation may be pure or impure
 
-   - If it is impure, it may be be fixed (typical), or it may be floating if the additional [`impure-derivations`][xp-feature-impure-derivations] experimental feature is enabled.
+   - If it is impure, it may be fixed (typical), or it may be floating if the additional [`impure-derivations`][xp-feature-impure-derivations] experimental feature is enabled.
 
    - If it is pure, it must be floating.
 

doc/manual/source/store/store-object.md

@@ -18,14 +18,14 @@ In particular, the edge corresponding to a reference is from the store object th
 References other than a self-reference must not form a cycle.
 The graph of references excluding self-references thus forms a [directed acyclic graph].
 
-[directed acyclic graph]: @docroot@/glossary.md#gloss-directed acyclic graph
+[directed acyclic graph]: @docroot@/glossary.md#gloss-directed-acyclic-graph
 
 We can take the [transitive closure] of the references graph, which any pair of store objects have an edge not if there is a single reference from the first to the second, but a path of one or more references from the first to the second.
 The *requisites* of a store object are all store objects reachable by paths of references which start with given store object's references.
 
 [transitive closure]: https://en.wikipedia.org/wiki/Transitive_closure
 
-We can also take the [transpose graph] ofthe references graph, where we reverse the orientation of all edges.
+We can also take the [transpose graph] of the references graph, where we reverse the orientation of all edges.
 The *referrers* of a store object are the store objects that reference it.
 
 [transpose graph]: https://en.wikipedia.org/wiki/Transpose_graph

doc/manual/substitute.py

@@ -57,6 +57,9 @@ def recursive_replace(data: dict[str, t.Any], book_root: Path, search_path: Path
                     ).replace(
                         '@docroot@',
                         ("../" * len(path_to_chapter.parent.parts) or "./")[:-1]
+                    ).replace(
+                        '@_at_',
+                        '@'
                     ),
                     sub_items = [
                         recursive_replace(sub_item, book_root, search_path)

docker.nix

@@ -38,60 +38,58 @@ let
     ]
     ++ extraPkgs;
 
-  users =
-    {
+  users = {
 
-      root = {
-        uid = 0;
-        shell = "${pkgs.bashInteractive}/bin/bash";
-        home = "/root";
-        gid = 0;
-        groups = [ "root" ];
-        description = "System administrator";
-      };
-
-      nobody = {
-        uid = 65534;
-        shell = "${pkgs.shadow}/bin/nologin";
-        home = "/var/empty";
-        gid = 65534;
-        groups = [ "nobody" ];
-        description = "Unprivileged account (don't use!)";
-      };
-
-    }
-    // lib.optionalAttrs (uid != 0) {
-      "${uname}" = {
-        uid = uid;
-        shell = "${pkgs.bashInteractive}/bin/bash";
-        home = "/home/${uname}";
-        gid = gid;
-        groups = [ "${gname}" ];
-        description = "Nix user";
-      };
-    }
-    // lib.listToAttrs (
-      map (n: {
-        name = "nixbld${toString n}";
-        value = {
-          uid = 30000 + n;
-          gid = 30000;
-          groups = [ "nixbld" ];
-          description = "Nix build user ${toString n}";
-        };
-      }) (lib.lists.range 1 32)
-    );
-
-  groups =
-    {
-      root.gid = 0;
-      nixbld.gid = 30000;
-      nobody.gid = 65534;
-    }
-    // lib.optionalAttrs (gid != 0) {
-      "${gname}".gid = gid;
+    root = {
+      uid = 0;
+      shell = "${pkgs.bashInteractive}/bin/bash";
+      home = "/root";
+      gid = 0;
+      groups = [ "root" ];
+      description = "System administrator";
     };
 
+    nobody = {
+      uid = 65534;
+      shell = "${pkgs.shadow}/bin/nologin";
+      home = "/var/empty";
+      gid = 65534;
+      groups = [ "nobody" ];
+      description = "Unprivileged account (don't use!)";
+    };
+
+  }
+  // lib.optionalAttrs (uid != 0) {
+    "${uname}" = {
+      uid = uid;
+      shell = "${pkgs.bashInteractive}/bin/bash";
+      home = "/home/${uname}";
+      gid = gid;
+      groups = [ "${gname}" ];
+      description = "Nix user";
+    };
+  }
+  // lib.listToAttrs (
+    map (n: {
+      name = "nixbld${toString n}";
+      value = {
+        uid = 30000 + n;
+        gid = 30000;
+        groups = [ "nixbld" ];
+        description = "Nix build user ${toString n}";
+      };
+    }) (lib.lists.range 1 32)
+  );
+
+  groups = {
+    root.gid = 0;
+    nixbld.gid = 30000;
+    nobody.gid = 65534;
+  }
+  // lib.optionalAttrs (gid != 0) {
+    "${gname}".gid = gid;
+  };
+
   userToPasswd = (
     k:
     {
@@ -155,7 +153,7 @@ let
 
   nixConfContents =
     (lib.concatStringsSep "\n" (
-      lib.mapAttrsFlatten (
+      lib.mapAttrsToList (
         n: v:
         let
           vStr = if builtins.isList v then lib.concatStringsSep " " v else v;
@@ -173,7 +171,12 @@ let
       channel = pkgs.runCommand "channel-nixos" { inherit bundleNixpkgs; } ''
         mkdir $out
         if [ "$bundleNixpkgs" ]; then
-          ln -s ${nixpkgs} $out/nixpkgs
+          ln -s ${
+            builtins.path {
+              path = nixpkgs;
+              name = "source";
+            }
+          } $out/nixpkgs
           echo "[]" > $out/manifest.nix
         fi
       '';
@@ -275,7 +278,6 @@ let
 
           ln -s ${profile} $out/nix/var/nix/profiles/default-1-link
           ln -s /nix/var/nix/profiles/default-1-link $out/nix/var/nix/profiles/default
-          ln -s /nix/var/nix/profiles/default $out${userHome}/.nix-profile
 
           ln -s ${channel} $out/nix/var/nix/profiles/per-user/${uname}/channels-1-link
           ln -s /nix/var/nix/profiles/per-user/${uname}/channels-1-link $out/nix/var/nix/profiles/per-user/${uname}/channels
@@ -327,7 +329,7 @@ pkgs.dockerTools.buildLayeredImageWithNixDb {
   '';
 
   config = {
-    Cmd = [ "${userHome}/.nix-profile/bin/bash" ];
+    Cmd = [ (lib.getExe pkgs.bashInteractive) ];
     User = "${toString uid}:${toString gid}";
     Env = [
       "USER=${uname}"

flake.lock

@@ -63,16 +63,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1746141548,
-        "narHash": "sha256-IgBWhX7A2oJmZFIrpRuMnw5RAufVnfvOgHWgIdds+hc=",
+        "lastModified": 1756178832,
+        "narHash": "sha256-O2CIn7HjZwEGqBrwu9EU76zlmA5dbmna7jL1XUmAId8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "f02fddb8acef29a8b32f10a335d44828d7825b78",
+        "rev": "d98ce345cdab58477ca61855540999c86577d19d",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-unstable",
+        "ref": "nixos-25.05-small",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -1,7 +1,7 @@
 {
   description = "The purely functional package manager";
 
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05-small";
 
   inputs.nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
   inputs.nixpkgs-23-11.url = "github:NixOS/nixpkgs/a62e6edd6d5e1fa0329b8653c801147986f8d446";
@@ -32,7 +32,7 @@
     let
       inherit (nixpkgs) lib;
 
-      officialRelease = false;
+      officialRelease = true;
 
       linux32BitSystems = [ "i686-linux" ];
       linux64BitSystems = [

maintainers/flake-module.nix

@@ -77,467 +77,6 @@
               # Don't format vendored code
               ''^doc/manual/redirects\.js$''
               ''^doc/manual/theme/highlight\.js$''
-
-              # We haven't applied formatting to these files yet
-              ''^doc/manual/redirects\.js$''
-              ''^doc/manual/theme/highlight\.js$''
-              ''^precompiled-headers\.h$''
-              ''^src/build-remote/build-remote\.cc$''
-              ''^src/libcmd/built-path\.cc$''
-              ''^src/libcmd/include/nix/cmd/built-path\.hh$''
-              ''^src/libcmd/common-eval-args\.cc$''
-              ''^src/libcmd/include/nix/cmd/common-eval-args\.hh$''
-              ''^src/libcmd/editor-for\.cc$''
-              ''^src/libcmd/installable-attr-path\.cc$''
-              ''^src/libcmd/include/nix/cmd/installable-attr-path\.hh$''
-              ''^src/libcmd/installable-derived-path\.cc$''
-              ''^src/libcmd/include/nix/cmd/installable-derived-path\.hh$''
-              ''^src/libcmd/installable-flake\.cc$''
-              ''^src/libcmd/include/nix/cmd/installable-flake\.hh$''
-              ''^src/libcmd/installable-value\.cc$''
-              ''^src/libcmd/include/nix/cmd/installable-value\.hh$''
-              ''^src/libcmd/installables\.cc$''
-              ''^src/libcmd/include/nix/cmd/installables\.hh$''
-              ''^src/libcmd/include/nix/cmd/legacy\.hh$''
-              ''^src/libcmd/markdown\.cc$''
-              ''^src/libcmd/misc-store-flags\.cc$''
-              ''^src/libcmd/repl-interacter\.cc$''
-              ''^src/libcmd/include/nix/cmd/repl-interacter\.hh$''
-              ''^src/libcmd/repl\.cc$''
-              ''^src/libcmd/include/nix/cmd/repl\.hh$''
-              ''^src/libexpr-c/nix_api_expr\.cc$''
-              ''^src/libexpr-c/nix_api_external\.cc$''
-              ''^src/libexpr/attr-path\.cc$''
-              ''^src/libexpr/include/nix/expr/attr-path\.hh$''
-              ''^src/libexpr/attr-set\.cc$''
-              ''^src/libexpr/include/nix/expr/attr-set\.hh$''
-              ''^src/libexpr/eval-cache\.cc$''
-              ''^src/libexpr/include/nix/expr/eval-cache\.hh$''
-              ''^src/libexpr/eval-error\.cc$''
-              ''^src/libexpr/include/nix/expr/eval-inline\.hh$''
-              ''^src/libexpr/eval-settings\.cc$''
-              ''^src/libexpr/include/nix/expr/eval-settings\.hh$''
-              ''^src/libexpr/eval\.cc$''
-              ''^src/libexpr/include/nix/expr/eval\.hh$''
-              ''^src/libexpr/function-trace\.cc$''
-              ''^src/libexpr/include/nix/expr/gc-small-vector\.hh$''
-              ''^src/libexpr/get-drvs\.cc$''
-              ''^src/libexpr/include/nix/expr/get-drvs\.hh$''
-              ''^src/libexpr/json-to-value\.cc$''
-              ''^src/libexpr/nixexpr\.cc$''
-              ''^src/libexpr/include/nix/expr/nixexpr\.hh$''
-              ''^src/libexpr/include/nix/expr/parser-state\.hh$''
-              ''^src/libexpr/primops\.cc$''
-              ''^src/libexpr/include/nix/expr/primops\.hh$''
-              ''^src/libexpr/primops/context\.cc$''
-              ''^src/libexpr/primops/fetchClosure\.cc$''
-              ''^src/libexpr/primops/fetchMercurial\.cc$''
-              ''^src/libexpr/primops/fetchTree\.cc$''
-              ''^src/libexpr/primops/fromTOML\.cc$''
-              ''^src/libexpr/print-ambiguous\.cc$''
-              ''^src/libexpr/include/nix/expr/print-ambiguous\.hh$''
-              ''^src/libexpr/include/nix/expr/print-options\.hh$''
-              ''^src/libexpr/print\.cc$''
-              ''^src/libexpr/include/nix/expr/print\.hh$''
-              ''^src/libexpr/search-path\.cc$''
-              ''^src/libexpr/include/nix/expr/symbol-table\.hh$''
-              ''^src/libexpr/value-to-json\.cc$''
-              ''^src/libexpr/include/nix/expr/value-to-json\.hh$''
-              ''^src/libexpr/value-to-xml\.cc$''
-              ''^src/libexpr/include/nix/expr/value-to-xml\.hh$''
-              ''^src/libexpr/include/nix/expr/value\.hh$''
-              ''^src/libexpr/value/context\.cc$''
-              ''^src/libexpr/include/nix/expr/value/context\.hh$''
-              ''^src/libfetchers/attrs\.cc$''
-              ''^src/libfetchers/cache\.cc$''
-              ''^src/libfetchers/include/nix/fetchers/cache\.hh$''
-              ''^src/libfetchers/fetch-settings\.cc$''
-              ''^src/libfetchers/include/nix/fetchers/fetch-settings\.hh$''
-              ''^src/libfetchers/fetch-to-store\.cc$''
-              ''^src/libfetchers/fetchers\.cc$''
-              ''^src/libfetchers/include/nix/fetchers/fetchers\.hh$''
-              ''^src/libfetchers/filtering-source-accessor\.cc$''
-              ''^src/libfetchers/include/nix/fetchers/filtering-source-accessor\.hh$''
-              ''^src/libfetchers/fs-source-accessor\.cc$''
-              ''^src/libfetchers/include/nix/fs-source-accessor\.hh$''
-              ''^src/libfetchers/git-utils\.cc$''
-              ''^src/libfetchers/include/nix/fetchers/git-utils\.hh$''
-              ''^src/libfetchers/github\.cc$''
-              ''^src/libfetchers/indirect\.cc$''
-              ''^src/libfetchers/memory-source-accessor\.cc$''
-              ''^src/libfetchers/path\.cc$''
-              ''^src/libfetchers/registry\.cc$''
-              ''^src/libfetchers/include/nix/fetchers/registry\.hh$''
-              ''^src/libfetchers/tarball\.cc$''
-              ''^src/libfetchers/include/nix/fetchers/tarball\.hh$''
-              ''^src/libfetchers/git\.cc$''
-              ''^src/libfetchers/mercurial\.cc$''
-              ''^src/libflake/config\.cc$''
-              ''^src/libflake/flake\.cc$''
-              ''^src/libflake/include/nix/flake/flake\.hh$''
-              ''^src/libflake/flakeref\.cc$''
-              ''^src/libflake/include/nix/flake/flakeref\.hh$''
-              ''^src/libflake/lockfile\.cc$''
-              ''^src/libflake/include/nix/flake/lockfile\.hh$''
-              ''^src/libflake/url-name\.cc$''
-              ''^src/libmain/common-args\.cc$''
-              ''^src/libmain/include/nix/main/common-args\.hh$''
-              ''^src/libmain/loggers\.cc$''
-              ''^src/libmain/include/nix/main/loggers\.hh$''
-              ''^src/libmain/progress-bar\.cc$''
-              ''^src/libmain/shared\.cc$''
-              ''^src/libmain/include/nix/main/shared\.hh$''
-              ''^src/libmain/unix/stack\.cc$''
-              ''^src/libstore/binary-cache-store\.cc$''
-              ''^src/libstore/include/nix/store/binary-cache-store\.hh$''
-              ''^src/libstore/include/nix/store/build-result\.hh$''
-              ''^src/libstore/include/nix/store/builtins\.hh$''
-              ''^src/libstore/builtins/buildenv\.cc$''
-              ''^src/libstore/include/nix/store/builtins/buildenv\.hh$''
-              ''^src/libstore/include/nix/store/common-protocol-impl\.hh$''
-              ''^src/libstore/common-protocol\.cc$''
-              ''^src/libstore/include/nix/store/common-protocol\.hh$''
-              ''^src/libstore/include/nix/store/common-ssh-store-config\.hh$''
-              ''^src/libstore/content-address\.cc$''
-              ''^src/libstore/include/nix/store/content-address\.hh$''
-              ''^src/libstore/daemon\.cc$''
-              ''^src/libstore/include/nix/store/daemon\.hh$''
-              ''^src/libstore/derivations\.cc$''
-              ''^src/libstore/include/nix/store/derivations\.hh$''
-              ''^src/libstore/derived-path-map\.cc$''
-              ''^src/libstore/include/nix/store/derived-path-map\.hh$''
-              ''^src/libstore/derived-path\.cc$''
-              ''^src/libstore/include/nix/store/derived-path\.hh$''
-              ''^src/libstore/downstream-placeholder\.cc$''
-              ''^src/libstore/include/nix/store/downstream-placeholder\.hh$''
-              ''^src/libstore/dummy-store\.cc$''
-              ''^src/libstore/export-import\.cc$''
-              ''^src/libstore/filetransfer\.cc$''
-              ''^src/libstore/include/nix/store/filetransfer\.hh$''
-              ''^src/libstore/include/nix/store/gc-store\.hh$''
-              ''^src/libstore/globals\.cc$''
-              ''^src/libstore/include/nix/store/globals\.hh$''
-              ''^src/libstore/http-binary-cache-store\.cc$''
-              ''^src/libstore/legacy-ssh-store\.cc$''
-              ''^src/libstore/include/nix/store/legacy-ssh-store\.hh$''
-              ''^src/libstore/include/nix/store/length-prefixed-protocol-helper\.hh$''
-              ''^src/libstore/linux/personality\.cc$''
-              ''^src/libstore/linux/include/nix/store/personality\.hh$''
-              ''^src/libstore/local-binary-cache-store\.cc$''
-              ''^src/libstore/local-fs-store\.cc$''
-              ''^src/libstore/include/nix/store/local-fs-store\.hh$''
-              ''^src/libstore/log-store\.cc$''
-              ''^src/libstore/include/nix/store/log-store\.hh$''
-              ''^src/libstore/machines\.cc$''
-              ''^src/libstore/include/nix/store/machines\.hh$''
-              ''^src/libstore/make-content-addressed\.cc$''
-              ''^src/libstore/include/nix/store/make-content-addressed\.hh$''
-              ''^src/libstore/misc\.cc$''
-              ''^src/libstore/names\.cc$''
-              ''^src/libstore/include/nix/store/names\.hh$''
-              ''^src/libstore/nar-accessor\.cc$''
-              ''^src/libstore/include/nix/store/nar-accessor\.hh$''
-              ''^src/libstore/nar-info-disk-cache\.cc$''
-              ''^src/libstore/include/nix/store/nar-info-disk-cache\.hh$''
-              ''^src/libstore/nar-info\.cc$''
-              ''^src/libstore/include/nix/store/nar-info\.hh$''
-              ''^src/libstore/outputs-spec\.cc$''
-              ''^src/libstore/include/nix/store/outputs-spec\.hh$''
-              ''^src/libstore/parsed-derivations\.cc$''
-              ''^src/libstore/path-info\.cc$''
-              ''^src/libstore/include/nix/store/path-info\.hh$''
-              ''^src/libstore/path-references\.cc$''
-              ''^src/libstore/include/nix/store/path-regex\.hh$''
-              ''^src/libstore/path-with-outputs\.cc$''
-              ''^src/libstore/path\.cc$''
-              ''^src/libstore/include/nix/store/path\.hh$''
-              ''^src/libstore/pathlocks\.cc$''
-              ''^src/libstore/include/nix/store/pathlocks\.hh$''
-              ''^src/libstore/profiles\.cc$''
-              ''^src/libstore/include/nix/store/profiles\.hh$''
-              ''^src/libstore/realisation\.cc$''
-              ''^src/libstore/include/nix/store/realisation\.hh$''
-              ''^src/libstore/remote-fs-accessor\.cc$''
-              ''^src/libstore/include/nix/store/remote-fs-accessor\.hh$''
-              ''^src/libstore/include/nix/store/remote-store-connection\.hh$''
-              ''^src/libstore/remote-store\.cc$''
-              ''^src/libstore/include/nix/store/remote-store\.hh$''
-              ''^src/libstore/s3-binary-cache-store\.cc$''
-              ''^src/libstore/include/nix/store/s3\.hh$''
-              ''^src/libstore/serve-protocol-impl\.cc$''
-              ''^src/libstore/include/nix/store/serve-protocol-impl\.hh$''
-              ''^src/libstore/serve-protocol\.cc$''
-              ''^src/libstore/include/nix/store/serve-protocol\.hh$''
-              ''^src/libstore/sqlite\.cc$''
-              ''^src/libstore/include/nix/store/sqlite\.hh$''
-              ''^src/libstore/ssh-store\.cc$''
-              ''^src/libstore/ssh\.cc$''
-              ''^src/libstore/include/nix/store/ssh\.hh$''
-              ''^src/libstore/store-api\.cc$''
-              ''^src/libstore/include/nix/store/store-api\.hh$''
-              ''^src/libstore/include/nix/store/store-dir-config\.hh$''
-              ''^src/libstore/build/derivation-goal\.cc$''
-              ''^src/libstore/include/nix/store/build/derivation-goal\.hh$''
-              ''^src/libstore/build/drv-output-substitution-goal\.cc$''
-              ''^src/libstore/include/nix/store/build/drv-output-substitution-goal\.hh$''
-              ''^src/libstore/build/entry-points\.cc$''
-              ''^src/libstore/build/goal\.cc$''
-              ''^src/libstore/include/nix/store/build/goal\.hh$''
-              ''^src/libstore/unix/build/hook-instance\.cc$''
-              ''^src/libstore/unix/build/derivation-builder\.cc$''
-              ''^src/libstore/unix/include/nix/store/build/derivation-builder\.hh$''
-              ''^src/libstore/build/substitution-goal\.cc$''
-              ''^src/libstore/include/nix/store/build/substitution-goal\.hh$''
-              ''^src/libstore/build/worker\.cc$''
-              ''^src/libstore/include/nix/store/build/worker\.hh$''
-              ''^src/libstore/builtins/fetchurl\.cc$''
-              ''^src/libstore/builtins/unpack-channel\.cc$''
-              ''^src/libstore/gc\.cc$''
-              ''^src/libstore/local-overlay-store\.cc$''
-              ''^src/libstore/include/nix/store/local-overlay-store\.hh$''
-              ''^src/libstore/local-store\.cc$''
-              ''^src/libstore/include/nix/store/local-store\.hh$''
-              ''^src/libstore/unix/user-lock\.cc$''
-              ''^src/libstore/unix/include/nix/store/user-lock\.hh$''
-              ''^src/libstore/optimise-store\.cc$''
-              ''^src/libstore/unix/pathlocks\.cc$''
-              ''^src/libstore/posix-fs-canonicalise\.cc$''
-              ''^src/libstore/include/nix/store/posix-fs-canonicalise\.hh$''
-              ''^src/libstore/uds-remote-store\.cc$''
-              ''^src/libstore/include/nix/store/uds-remote-store\.hh$''
-              ''^src/libstore/windows/build\.cc$''
-              ''^src/libstore/include/nix/store/worker-protocol-impl\.hh$''
-              ''^src/libstore/worker-protocol\.cc$''
-              ''^src/libstore/include/nix/store/worker-protocol\.hh$''
-              ''^src/libutil-c/nix_api_util_internal\.h$''
-              ''^src/libutil/archive\.cc$''
-              ''^src/libutil/include/nix/util/archive\.hh$''
-              ''^src/libutil/args\.cc$''
-              ''^src/libutil/include/nix/util/args\.hh$''
-              ''^src/libutil/include/nix/util/args/root\.hh$''
-              ''^src/libutil/include/nix/util/callback\.hh$''
-              ''^src/libutil/canon-path\.cc$''
-              ''^src/libutil/include/nix/util/canon-path\.hh$''
-              ''^src/libutil/include/nix/util/chunked-vector\.hh$''
-              ''^src/libutil/include/nix/util/closure\.hh$''
-              ''^src/libutil/include/nix/util/comparator\.hh$''
-              ''^src/libutil/compute-levels\.cc$''
-              ''^src/libutil/include/nix/util/config-impl\.hh$''
-              ''^src/libutil/configuration\.cc$''
-              ''^src/libutil/include/nix/util/configuration\.hh$''
-              ''^src/libutil/current-process\.cc$''
-              ''^src/libutil/include/nix/util/current-process\.hh$''
-              ''^src/libutil/english\.cc$''
-              ''^src/libutil/include/nix/util/english\.hh$''
-              ''^src/libutil/error\.cc$''
-              ''^src/libutil/include/nix/util/error\.hh$''
-              ''^src/libutil/include/nix/util/exit\.hh$''
-              ''^src/libutil/experimental-features\.cc$''
-              ''^src/libutil/include/nix/util/experimental-features\.hh$''
-              ''^src/libutil/file-content-address\.cc$''
-              ''^src/libutil/include/nix/util/file-content-address\.hh$''
-              ''^src/libutil/file-descriptor\.cc$''
-              ''^src/libutil/include/nix/util/file-descriptor\.hh$''
-              ''^src/libutil/include/nix/util/file-path-impl\.hh$''
-              ''^src/libutil/include/nix/util/file-path\.hh$''
-              ''^src/libutil/file-system\.cc$''
-              ''^src/libutil/include/nix/util/file-system\.hh$''
-              ''^src/libutil/include/nix/util/finally\.hh$''
-              ''^src/libutil/include/nix/util/fmt\.hh$''
-              ''^src/libutil/fs-sink\.cc$''
-              ''^src/libutil/include/nix/util/fs-sink\.hh$''
-              ''^src/libutil/git\.cc$''
-              ''^src/libutil/include/nix/util/git\.hh$''
-              ''^src/libutil/hash\.cc$''
-              ''^src/libutil/include/nix/util/hash\.hh$''
-              ''^src/libutil/hilite\.cc$''
-              ''^src/libutil/include/nix/util/hilite\.hh$''
-              ''^src/libutil/source-accessor\.hh$''
-              ''^src/libutil/include/nix/util/json-impls\.hh$''
-              ''^src/libutil/json-utils\.cc$''
-              ''^src/libutil/include/nix/util/json-utils\.hh$''
-              ''^src/libutil/linux/cgroup\.cc$''
-              ''^src/libutil/linux/namespaces\.cc$''
-              ''^src/libutil/logging\.cc$''
-              ''^src/libutil/include/nix/util/logging\.hh$''
-              ''^src/libutil/memory-source-accessor\.cc$''
-              ''^src/libutil/include/nix/util/memory-source-accessor\.hh$''
-              ''^src/libutil/include/nix/util/pool\.hh$''
-              ''^src/libutil/position\.cc$''
-              ''^src/libutil/include/nix/util/position\.hh$''
-              ''^src/libutil/posix-source-accessor\.cc$''
-              ''^src/libutil/include/nix/util/posix-source-accessor\.hh$''
-              ''^src/libutil/include/nix/util/processes\.hh$''
-              ''^src/libutil/include/nix/util/ref\.hh$''
-              ''^src/libutil/references\.cc$''
-              ''^src/libutil/include/nix/util/references\.hh$''
-              ''^src/libutil/regex-combinators\.hh$''
-              ''^src/libutil/serialise\.cc$''
-              ''^src/libutil/include/nix/util/serialise\.hh$''
-              ''^src/libutil/include/nix/util/signals\.hh$''
-              ''^src/libutil/signature/local-keys\.cc$''
-              ''^src/libutil/include/nix/util/signature/local-keys\.hh$''
-              ''^src/libutil/signature/signer\.cc$''
-              ''^src/libutil/include/nix/util/signature/signer\.hh$''
-              ''^src/libutil/source-accessor\.cc$''
-              ''^src/libutil/include/nix/util/source-accessor\.hh$''
-              ''^src/libutil/source-path\.cc$''
-              ''^src/libutil/include/nix/util/source-path\.hh$''
-              ''^src/libutil/include/nix/util/split\.hh$''
-              ''^src/libutil/suggestions\.cc$''
-              ''^src/libutil/include/nix/util/suggestions\.hh$''
-              ''^src/libutil/include/nix/util/sync\.hh$''
-              ''^src/libutil/terminal\.cc$''
-              ''^src/libutil/include/nix/util/terminal\.hh$''
-              ''^src/libutil/thread-pool\.cc$''
-              ''^src/libutil/include/nix/util/thread-pool\.hh$''
-              ''^src/libutil/include/nix/util/topo-sort\.hh$''
-              ''^src/libutil/include/nix/util/types\.hh$''
-              ''^src/libutil/unix/file-descriptor\.cc$''
-              ''^src/libutil/unix/file-path\.cc$''
-              ''^src/libutil/unix/processes\.cc$''
-              ''^src/libutil/unix/include/nix/util/signals-impl\.hh$''
-              ''^src/libutil/unix/signals\.cc$''
-              ''^src/libutil/unix-domain-socket\.cc$''
-              ''^src/libutil/unix/users\.cc$''
-              ''^src/libutil/include/nix/util/url-parts\.hh$''
-              ''^src/libutil/url\.cc$''
-              ''^src/libutil/include/nix/util/url\.hh$''
-              ''^src/libutil/users\.cc$''
-              ''^src/libutil/include/nix/util/users\.hh$''
-              ''^src/libutil/util\.cc$''
-              ''^src/libutil/include/nix/util/util\.hh$''
-              ''^src/libutil/include/nix/util/variant-wrapper\.hh$''
-              ''^src/libutil/widecharwidth/widechar_width\.h$'' # vendored source
-              ''^src/libutil/windows/file-descriptor\.cc$''
-              ''^src/libutil/windows/file-path\.cc$''
-              ''^src/libutil/windows/processes\.cc$''
-              ''^src/libutil/windows/users\.cc$''
-              ''^src/libutil/windows/windows-error\.cc$''
-              ''^src/libutil/windows/include/nix/util/windows-error\.hh$''
-              ''^src/libutil/xml-writer\.cc$''
-              ''^src/libutil/include/nix/util/xml-writer\.hh$''
-              ''^src/nix-build/nix-build\.cc$''
-              ''^src/nix-channel/nix-channel\.cc$''
-              ''^src/nix-collect-garbage/nix-collect-garbage\.cc$''
-              ''^src/nix-env/buildenv.nix$''
-              ''^src/nix-env/nix-env\.cc$''
-              ''^src/nix-env/user-env\.cc$''
-              ''^src/nix-env/user-env\.hh$''
-              ''^src/nix-instantiate/nix-instantiate\.cc$''
-              ''^src/nix-store/dotgraph\.cc$''
-              ''^src/nix-store/graphml\.cc$''
-              ''^src/nix-store/nix-store\.cc$''
-              ''^src/nix/add-to-store\.cc$''
-              ''^src/nix/app\.cc$''
-              ''^src/nix/build\.cc$''
-              ''^src/nix/bundle\.cc$''
-              ''^src/nix/cat\.cc$''
-              ''^src/nix/config-check\.cc$''
-              ''^src/nix/config\.cc$''
-              ''^src/nix/copy\.cc$''
-              ''^src/nix/derivation-add\.cc$''
-              ''^src/nix/derivation-show\.cc$''
-              ''^src/nix/derivation\.cc$''
-              ''^src/nix/develop\.cc$''
-              ''^src/nix/diff-closures\.cc$''
-              ''^src/nix/dump-path\.cc$''
-              ''^src/nix/edit\.cc$''
-              ''^src/nix/eval\.cc$''
-              ''^src/nix/flake\.cc$''
-              ''^src/nix/fmt\.cc$''
-              ''^src/nix/hash\.cc$''
-              ''^src/nix/log\.cc$''
-              ''^src/nix/ls\.cc$''
-              ''^src/nix/main\.cc$''
-              ''^src/nix/make-content-addressed\.cc$''
-              ''^src/nix/nar\.cc$''
-              ''^src/nix/optimise-store\.cc$''
-              ''^src/nix/path-from-hash-part\.cc$''
-              ''^src/nix/path-info\.cc$''
-              ''^src/nix/prefetch\.cc$''
-              ''^src/nix/profile\.cc$''
-              ''^src/nix/realisation\.cc$''
-              ''^src/nix/registry\.cc$''
-              ''^src/nix/repl\.cc$''
-              ''^src/nix/run\.cc$''
-              ''^src/nix/run\.hh$''
-              ''^src/nix/search\.cc$''
-              ''^src/nix/sigs\.cc$''
-              ''^src/nix/store-copy-log\.cc$''
-              ''^src/nix/store-delete\.cc$''
-              ''^src/nix/store-gc\.cc$''
-              ''^src/nix/store-info\.cc$''
-              ''^src/nix/store-repair\.cc$''
-              ''^src/nix/store\.cc$''
-              ''^src/nix/unix/daemon\.cc$''
-              ''^src/nix/upgrade-nix\.cc$''
-              ''^src/nix/verify\.cc$''
-              ''^src/nix/why-depends\.cc$''
-
-              ''^tests/functional/plugins/plugintest\.cc''
-              ''^tests/functional/test-libstoreconsumer/main\.cc''
-              ''^tests/nixos/ca-fd-leak/sender\.c''
-              ''^tests/nixos/ca-fd-leak/smuggler\.c''
-              ''^tests/nixos/user-sandboxing/attacker\.c''
-              ''^src/libexpr-test-support/include/nix/expr/tests/libexpr\.hh''
-              ''^src/libexpr-test-support/tests/value/context\.cc''
-              ''^src/libexpr-test-support/include/nix/expr/tests/value/context\.hh''
-              ''^src/libexpr-tests/derived-path\.cc''
-              ''^src/libexpr-tests/error_traces\.cc''
-              ''^src/libexpr-tests/eval\.cc''
-              ''^src/libexpr-tests/json\.cc''
-              ''^src/libexpr-tests/main\.cc''
-              ''^src/libexpr-tests/primops\.cc''
-              ''^src/libexpr-tests/search-path\.cc''
-              ''^src/libexpr-tests/trivial\.cc''
-              ''^src/libexpr-tests/value/context\.cc''
-              ''^src/libexpr-tests/value/print\.cc''
-              ''^src/libfetchers-tests/public-key\.cc''
-              ''^src/libflake-tests/flakeref\.cc''
-              ''^src/libflake-tests/url-name\.cc''
-              ''^src/libstore-test-support/tests/derived-path\.cc''
-              ''^src/libstore-test-support/include/nix/store/tests/derived-path\.hh''
-              ''^src/libstore-test-support/include/nix/store/tests/nix_api_store\.hh''
-              ''^src/libstore-test-support/tests/outputs-spec\.cc''
-              ''^src/libstore-test-support/include/nix/store/tests/outputs-spec\.hh''
-              ''^src/libstore-test-support/path\.cc''
-              ''^src/libstore-test-support/include/nix/store/tests/path\.hh''
-              ''^src/libstore-test-support/include/nix/store/tests/protocol\.hh''
-              ''^src/libstore-tests/common-protocol\.cc''
-              ''^src/libstore-tests/content-address\.cc''
-              ''^src/libstore-tests/derivation\.cc''
-              ''^src/libstore-tests/derived-path\.cc''
-              ''^src/libstore-tests/downstream-placeholder\.cc''
-              ''^src/libstore-tests/machines\.cc''
-              ''^src/libstore-tests/nar-info-disk-cache\.cc''
-              ''^src/libstore-tests/nar-info\.cc''
-              ''^src/libstore-tests/outputs-spec\.cc''
-              ''^src/libstore-tests/path-info\.cc''
-              ''^src/libstore-tests/path\.cc''
-              ''^src/libstore-tests/serve-protocol\.cc''
-              ''^src/libstore-tests/worker-protocol\.cc''
-              ''^src/libutil-test-support/include/nix/util/tests/characterization\.hh''
-              ''^src/libutil-test-support/hash\.cc''
-              ''^src/libutil-test-support/include/nix/util/tests/hash\.hh''
-              ''^src/libutil-tests/args\.cc''
-              ''^src/libutil-tests/canon-path\.cc''
-              ''^src/libutil-tests/chunked-vector\.cc''
-              ''^src/libutil-tests/closure\.cc''
-              ''^src/libutil-tests/compression\.cc''
-              ''^src/libutil-tests/config\.cc''
-              ''^src/libutil-tests/file-content-address\.cc''
-              ''^src/libutil-tests/git\.cc''
-              ''^src/libutil-tests/hash\.cc''
-              ''^src/libutil-tests/hilite\.cc''
-              ''^src/libutil-tests/json-utils\.cc''
-              ''^src/libutil-tests/logging\.cc''
-              ''^src/libutil-tests/lru-cache\.cc''
-              ''^src/libutil-tests/pool\.cc''
-              ''^src/libutil-tests/references\.cc''
-              ''^src/libutil-tests/suggestions\.cc''
-              ''^src/libutil-tests/url\.cc''
-              ''^src/libutil-tests/xml-writer\.cc''
             ];
           };
           shellcheck = {

maintainers/format.sh

@@ -1,11 +1,16 @@
 #!/usr/bin/env bash
 
 if ! type -p pre-commit &>/dev/null; then
-  echo "format.sh: pre-commit not found. Please use \`nix develop\`.";
+  echo "format.sh: pre-commit not found. Please use \`nix develop -c ./maintainers/format.sh\`.";
   exit 1;
 fi;
 if test -z "$_NIX_PRE_COMMIT_HOOKS_CONFIG"; then
-  echo "format.sh: _NIX_PRE_COMMIT_HOOKS_CONFIG not set. Please use \`nix develop\`.";
+  echo "format.sh: _NIX_PRE_COMMIT_HOOKS_CONFIG not set. Please use \`nix develop -c ./maintainers/format.sh\`.";
   exit 1;
 fi;
-pre-commit run --config "$_NIX_PRE_COMMIT_HOOKS_CONFIG" --all-files
+
+while ! pre-commit run --config "$_NIX_PRE_COMMIT_HOOKS_CONFIG" --all-files; do
+    if [ "${1:-}" != "--until-stable" ]; then
+        exit 1
+    fi
+done

nix-meson-build-support/default-system-cpu/meson.build

@@ -0,0 +1,19 @@
+# This attempts to translate meson cpu_family and cpu_name specified via
+# --cross-file [1] into a nix *system double*. Nixpkgs mostly respects ([2]) the
+# conventions outlined in [1].
+#
+# [1]: https://mesonbuild.com/Reference-tables.html#cpu-families
+# [2]: https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-support/lib/meson.nix
+
+nix_system_cpu = {'ppc64' : 'powerpc64', 'ppc' : 'powerpc', 'x86' : 'i686'}.get(
+  host_machine.cpu_family(),
+  host_machine.cpu_family(),
+)
+
+if (host_machine.cpu_family() in [ 'ppc64', 'ppc' ]) and host_machine.endian() == 'little'
+  nix_system_cpu += 'le'
+elif host_machine.cpu_family() in [ 'mips64', 'mips' ] and host_machine.endian() == 'little'
+  nix_system_cpu += 'el'
+elif host_machine.cpu_family() == 'arm'
+  nix_system_cpu = host_machine.cpu()
+endif

nix-meson-build-support/export/meson.build

@@ -11,12 +11,18 @@ endforeach
 requires_public += deps_public
 
 extra_pkg_config_variables = get_variable('extra_pkg_config_variables', {})
+
+extra_cflags = []
+if not meson.project_name().endswith('-c')
+    extra_cflags += ['-std=c++2a']
+endif
+
 import('pkgconfig').generate(
   this_library,
   filebase : meson.project_name(),
   name : 'Nix',
   description : 'Nix Package Manager',
-  extra_cflags : ['-std=c++2a'],
+  extra_cflags : extra_cflags,
   requires : requires_public,
   requires_private : requires_private,
   libraries_private : libraries_private,

packaging/components.nix

@@ -54,12 +54,12 @@ let
     preConfigure =
       prevAttrs.preConfigure or ""
       +
-        # Update the repo-global .version file.
-        # Symlink ./.version points there, but by default only workDir is writable.
-        ''
-          chmod u+w ./.version
-          echo ${finalAttrs.version} > ./.version
-        '';
+      # Update the repo-global .version file.
+      # Symlink ./.version points there, but by default only workDir is writable.
+      ''
+        chmod u+w ./.version
+        echo ${finalAttrs.version} > ./.version
+      '';
   };
 
   localSourceLayer =
@@ -148,7 +148,8 @@ let
     nativeBuildInputs = [
       meson
       ninja
-    ] ++ prevAttrs.nativeBuildInputs or [ ];
+    ]
+    ++ prevAttrs.nativeBuildInputs or [ ];
     mesonCheckFlags = prevAttrs.mesonCheckFlags or [ ] ++ [
       "--print-errorlogs"
     ];
@@ -166,6 +167,17 @@ let
     outputs = prevAttrs.outputs or [ "out" ] ++ [ "dev" ];
   };
 
+  fixupStaticLayer = finalAttrs: prevAttrs: {
+    postFixup =
+      prevAttrs.postFixup or ""
+      + lib.optionalString (stdenv.hostPlatform.isStatic) ''
+        # HACK: Otherwise the result will have the entire buildInputs closure
+        # injected by the pkgsStatic stdenv
+        # <https://github.com/NixOS/nixpkgs/issues/83667>
+        rm -f $out/nix-support/propagated-build-inputs
+      '';
+  };
+
   # Work around weird `--as-needed` linker behavior with BSD, see
   # https://github.com/mesonbuild/meson/issues/3593
   bsdNoLinkAsNeeded =
@@ -301,6 +313,7 @@ in
     scope.sourceLayer
     setVersionLayer
     mesonLayer
+    fixupStaticLayer
     scope.mesonComponentOverrides
   ];
   mkMesonExecutable = mkPackageBuilder [
@@ -310,6 +323,7 @@ in
     setVersionLayer
     mesonLayer
     mesonBuildLayer
+    fixupStaticLayer
     scope.mesonComponentOverrides
   ];
   mkMesonLibrary = mkPackageBuilder [
@@ -320,6 +334,7 @@ in
     setVersionLayer
     mesonBuildLayer
     mesonLibraryLayer
+    fixupStaticLayer
     scope.mesonComponentOverrides
   ];
 

packaging/dependencies.nix

@@ -63,6 +63,7 @@ scope: {
         "--with-coroutine"
         "--with-iostreams"
       ];
+      enableIcu = false;
     }).overrideAttrs
       (old: {
         # Need to remove `--with-*` to use `--with-libraries=...`

packaging/dev-shell.nix

@@ -71,17 +71,16 @@ pkgs.nixComponents2.nix-util.overrideAttrs (
     # We use this shell with the local checkout, not unpackPhase.
     src = null;
 
-    env =
-      {
-        # For `make format`, to work without installing pre-commit
-        _NIX_PRE_COMMIT_HOOKS_CONFIG = "${(pkgs.formats.yaml { }).generate "pre-commit-config.yaml"
-          modular.pre-commit.settings.rawConfig
-        }";
-      }
-      // lib.optionalAttrs stdenv.hostPlatform.isLinux {
-        CC_LD = "mold";
-        CXX_LD = "mold";
-      };
+    env = {
+      # For `make format`, to work without installing pre-commit
+      _NIX_PRE_COMMIT_HOOKS_CONFIG = "${(pkgs.formats.yaml { }).generate "pre-commit-config.yaml"
+        modular.pre-commit.settings.rawConfig
+      }";
+    }
+    // lib.optionalAttrs stdenv.hostPlatform.isLinux {
+      CC_LD = "mold";
+      CXX_LD = "mold";
+    };
 
     mesonFlags =
       map (transformFlag "libutil") (ignoreCrossFile pkgs.nixComponents2.nix-util.mesonFlags)
@@ -113,15 +112,13 @@ pkgs.nixComponents2.nix-util.overrideAttrs (
       ) pkgs.buildPackages.mesonEmulatorHook
       ++ [
         pkgs.buildPackages.cmake
+        pkgs.buildPackages.gnused
         pkgs.buildPackages.shellcheck
         pkgs.buildPackages.changelog-d
         modular.pre-commit.settings.package
         (pkgs.writeScriptBin "pre-commit-hooks-install" modular.pre-commit.settings.installationScript)
         pkgs.buildPackages.nixfmt-rfc-style
       ]
-      # TODO: Remove the darwin check once
-      # https://github.com/NixOS/nixpkgs/pull/291814 is available
-      ++ lib.optional (stdenv.cc.isClang && !stdenv.buildPlatform.isDarwin) pkgs.buildPackages.bear
       ++ lib.optional (stdenv.cc.isClang && stdenv.hostPlatform == stdenv.buildPlatform) (
         lib.hiPrio pkgs.buildPackages.clang-tools
       )

packaging/everything.nix

@@ -47,25 +47,25 @@
 }:
 
 let
-  libs =
-    {
-      inherit
-        nix-util
-        nix-util-c
-        nix-store
-        nix-store-c
-        nix-fetchers
-        nix-fetchers-c
-        nix-expr
-        nix-expr-c
-        nix-flake
-        nix-flake-c
-        nix-main
-        nix-main-c
-        nix-cmd
-        ;
-    }
-    // lib.optionalAttrs
+  libs = {
+    inherit
+      nix-util
+      nix-util-c
+      nix-store
+      nix-store-c
+      nix-fetchers
+      nix-fetchers-c
+      nix-expr
+      nix-expr-c
+      nix-flake
+      nix-flake-c
+      nix-main
+      nix-main-c
+      nix-cmd
+      ;
+  }
+  //
+    lib.optionalAttrs
       (!stdenv.hostPlatform.isStatic && stdenv.buildPlatform.canExecute stdenv.hostPlatform)
       {
         # Currently fails in static build
@@ -127,20 +127,19 @@ stdenv.mkDerivation (finalAttrs: {
   */
   dontFixup = true;
 
-  checkInputs =
-    [
-      # Make sure the unit tests have passed
-      nix-util-tests.tests.run
-      nix-store-tests.tests.run
-      nix-expr-tests.tests.run
-      nix-fetchers-tests.tests.run
-      nix-flake-tests.tests.run
+  checkInputs = [
+    # Make sure the unit tests have passed
+    nix-util-tests.tests.run
+    nix-store-tests.tests.run
+    nix-expr-tests.tests.run
+    nix-fetchers-tests.tests.run
+    nix-flake-tests.tests.run
 
-      # Make sure the functional tests have passed
-      nix-functional-tests
-    ]
-    ++ lib.optionals
-      (!stdenv.hostPlatform.isStatic && stdenv.buildPlatform.canExecute stdenv.hostPlatform)
+    # Make sure the functional tests have passed
+    nix-functional-tests
+  ]
+  ++
+    lib.optionals (!stdenv.hostPlatform.isStatic && stdenv.buildPlatform.canExecute stdenv.hostPlatform)
       [
         # Perl currently fails in static build
         # TODO: Split out tests into a separate derivation?

precompiled-headers.h

@@ -49,15 +49,15 @@
 #include <unistd.h>
 
 #ifndef _WIN32
-# include <grp.h>
-# include <netdb.h>
-# include <pwd.h>
-# include <sys/resource.h>
-# include <sys/select.h>
-# include <sys/socket.h>
-# include <sys/utsname.h>
-# include <sys/wait.h>
-# include <termios.h>
+#  include <grp.h>
+#  include <netdb.h>
+#  include <pwd.h>
+#  include <sys/resource.h>
+#  include <sys/select.h>
+#  include <sys/socket.h>
+#  include <sys/utsname.h>
+#  include <sys/wait.h>
+#  include <termios.h>
 #endif
 
 #include <nlohmann/json.hpp>

scripts/nix-profile-daemon.fish.in

@@ -1,17 +1,16 @@
 # Only execute this file once per shell.
-if test -z "$HOME" || \
-    test -n "$__ETC_PROFILE_NIX_SOURCED"
+if test -z "$HOME" || test -n "$__ETC_PROFILE_NIX_SOURCED"
     exit
 end
 
-set --global __ETC_PROFILE_NIX_SOURCED 1
+set --global --export __ETC_PROFILE_NIX_SOURCED 1
 
 # Local helpers
 
 function add_path --argument-names new_path
     if type -q fish_add_path
         # fish 3.2.0 or newer
-	fish_add_path --prepend --global $new_path
+        fish_add_path --prepend --global $new_path
     else
         # older versions of fish
         if not contains $new_path $fish_user_paths
@@ -24,7 +23,33 @@ end
 
 # Set up the per-user profile.
 
-set --local NIX_LINK $HOME/.nix-profile
+set --local NIX_LINK "$HOME/.nix-profile"
+set --local NIX_LINK_NEW
+if test -n "$XDG_STATE_HOME"
+    set NIX_LINK_NEW "$XDG_STATE_HOME/nix/profile"
+else
+    set NIX_LINK_NEW "$HOME/.local/state/nix/profile"
+end
+if test -e "$NIX_LINK_NEW"
+    if test -t 2; and test -e "$NIX_LINK"
+        set --local warning "\033[1;35mwarning:\033[0m "
+        printf "$warning Both %s and legacy %s exist; using the former.\n" "$NIX_LINK_NEW" "$NIX_LINK" 1>&2
+
+        if test (realpath "$NIX_LINK") = (realpath "$NIX_LINK_NEW")
+            printf "         Since the profiles match, you can safely delete either of them.\n" 1>&2
+        else
+            # This should be an exceptionally rare occasion: the only way to get it would be to
+            # 1. Update to newer Nix;
+            # 2. Remove .nix-profile;
+            # 3. Set the $NIX_LINK_NEW to something other than the default user profile;
+            # 4. Roll back to older Nix.
+            # If someone did all that, they can probably figure out how to migrate the profile.
+            printf "$warning Profiles do not match. You should manually migrate from %s to %s.\n" "$NIX_LINK" "$NIX_LINK_NEW" 1>&2
+        end
+    end
+
+    set NIX_LINK "$NIX_LINK_NEW"
+end
 
 # Set up environment.
 # This part should be kept in sync with nixpkgs:nixos/modules/programs/environment.nix

scripts/nix-profile.fish.in

@@ -1,17 +1,16 @@
 # Only execute this file once per shell.
-if test -z "$HOME" || \
-    test -n "$__ETC_PROFILE_NIX_SOURCED"
+if test -z "$HOME" || test -n "$__ETC_PROFILE_NIX_SOURCED"
     exit
 end
 
-set --global __ETC_PROFILE_NIX_SOURCED 1
+set --global --export __ETC_PROFILE_NIX_SOURCED 1
 
 # Local helpers
 
 function add_path --argument-names new_path
     if type -q fish_add_path
         # fish 3.2.0 or newer
-	fish_add_path --prepend --global $new_path
+        fish_add_path --prepend --global $new_path
     else
         # older versions of fish
         if not contains $new_path $fish_user_paths
@@ -24,7 +23,38 @@ end
 
 # Set up the per-user profile.
 
-set --local NIX_LINK $HOME/.nix-profile
+set --local NIX_LINK
+if test -n "$NIX_STATE_HOME"
+    set NIX_LINK "$NIX_STATE_HOME/.nix-profile"
+else
+    set NIX_LINK "$HOME/.nix-profile"
+    set --local NIX_LINK_NEW
+    if test -n "$XDG_STATE_HOME"
+        set NIX_LINK_NEW "$XDG_STATE_HOME/nix/profile"
+    else
+        set NIX_LINK_NEW "$HOME/.local/state/nix/profile"
+    end
+    if test -e "$NIX_LINK_NEW"
+        if test -t 2; and test -e "$NIX_LINK"
+            set --local warning "\033[1;35mwarning:\033[0m "
+            printf "$warning Both %s and legacy %s exist; using the former.\n" "$NIX_LINK_NEW" "$NIX_LINK" 1>&2
+
+            if test (realpath "$NIX_LINK") = (realpath "$NIX_LINK_NEW")
+                printf "         Since the profiles match, you can safely delete either of them.\n" 1>&2
+            else
+                # This should be an exceptionally rare occasion: the only way to get it would be to
+                # 1. Update to newer Nix;
+                # 2. Remove .nix-profile;
+                # 3. Set the $NIX_LINK_NEW to something other than the default user profile;
+                # 4. Roll back to older Nix.
+                # If someone did all that, they can probably figure out how to migrate the profile.
+                printf "$warning Profiles do not match. You should manually migrate from %s to %s.\n" "$NIX_LINK" "$NIX_LINK_NEW" 1>&2
+            end
+        end
+
+        set NIX_LINK "$NIX_LINK_NEW"
+    end
+end
 
 # Set up environment.
 # This part should be kept in sync with nixpkgs:nixos/modules/programs/environment.nix

src/build-remote/build-remote.cc

@@ -6,7 +6,7 @@
 #include <tuple>
 #include <iomanip>
 #ifdef __APPLE__
-#include <sys/time.h>
+#  include <sys/time.h>
 #endif
 
 #include "nix/store/machines.hh"
@@ -26,8 +26,7 @@
 using namespace nix;
 using std::cin;
 
-static void handleAlarm(int sig) {
-}
+static void handleAlarm(int sig) {}
 
 std::string escapeUri(std::string uri)
 {
@@ -42,13 +41,15 @@ static AutoCloseFD openSlotLock(const Machine & m, uint64_t slot)
     return openLockFile(fmt("%s/%s-%d", currentLoad, escapeUri(m.storeUri.render()), slot), true);
 }
 
-static bool allSupportedLocally(Store & store, const StringSet& requiredFeatures) {
+static bool allSupportedLocally(Store & store, const StringSet & requiredFeatures)
+{
     for (auto & feature : requiredFeatures)
-        if (!store.config.systemFeatures.get().count(feature)) return false;
+        if (!store.config.systemFeatures.get().count(feature))
+            return false;
     return true;
 }
 
-static int main_build_remote(int argc, char * * argv)
+static int main_build_remote(int argc, char ** argv)
 {
     {
         logger = makeJSONLogger(getStandardError());
@@ -85,7 +86,7 @@ static int main_build_remote(int argc, char * * argv)
            that gets cleared on reboot, but it wouldn't work on macOS. */
         auto currentLoadName = "/current-load";
         if (auto localStore = store.dynamic_pointer_cast<LocalFSStore>())
-            currentLoad = std::string { localStore->config.stateDir } + currentLoadName;
+            currentLoad = std::string{localStore->config.stateDir} + currentLoadName;
         else
             currentLoad = settings.nixStateDir + currentLoadName;
 
@@ -107,8 +108,11 @@ static int main_build_remote(int argc, char * * argv)
 
             try {
                 auto s = readString(source);
-                if (s != "try") return 0;
-            } catch (EndOfFile &) { return 0; }
+                if (s != "try")
+                    return 0;
+            } catch (EndOfFile &) {
+                return 0;
+            }
 
             auto amWilling = readInt(source);
             auto neededSystem = readString(source);
@@ -117,10 +121,10 @@ static int main_build_remote(int argc, char * * argv)
 
             /* It would be possible to build locally after some builds clear out,
                so don't show the warning now: */
-            bool couldBuildLocally = maxBuildJobs > 0
-                 &&  (  neededSystem == settings.thisSystem
-                     || settings.extraPlatforms.get().count(neededSystem) > 0)
-                 &&  allSupportedLocally(*store, requiredFeatures);
+            bool couldBuildLocally =
+                maxBuildJobs > 0
+                && (neededSystem == settings.thisSystem || settings.extraPlatforms.get().count(neededSystem) > 0)
+                && allSupportedLocally(*store, requiredFeatures);
             /* It's possible to build this locally right now: */
             bool canBuildLocally = amWilling && couldBuildLocally;
 
@@ -139,11 +143,8 @@ static int main_build_remote(int argc, char * * argv)
                 for (auto & m : machines) {
                     debug("considering building on remote machine '%s'", m.storeUri.render());
 
-                    if (m.enabled &&
-                        m.systemSupported(neededSystem) &&
-                        m.allSupported(requiredFeatures) &&
-                        m.mandatoryMet(requiredFeatures))
-                    {
+                    if (m.enabled && m.systemSupported(neededSystem) && m.allSupported(requiredFeatures)
+                        && m.mandatoryMet(requiredFeatures)) {
                         rightType = true;
                         AutoCloseFD free;
                         uint64_t load = 0;
@@ -185,8 +186,7 @@ static int main_build_remote(int argc, char * * argv)
                 if (!bestSlotLock) {
                     if (rightType && !canBuildLocally)
                         std::cerr << "# postpone\n";
-                    else
-                    {
+                    else {
                         // build the hint template.
                         std::string errorText =
                             "Failed to find a machine for remote build!\n"
@@ -205,16 +205,11 @@ static int main_build_remote(int argc, char * * argv)
                             drvstr = "<unknown>";
 
                         auto error = HintFmt::fromFormatString(errorText);
-                        error
-                            % drvstr
-                            % neededSystem
-                            % concatStringsSep<StringSet>(", ", requiredFeatures)
+                        error % drvstr % neededSystem % concatStringsSep<StringSet>(", ", requiredFeatures)
                             % machines.size();
 
                         for (auto & m : machines)
-                            error
-                                % concatStringsSep<StringSet>(", ", m.systemTypes)
-                                % m.maxJobs
+                            error % concatStringsSep<StringSet>(", ", m.systemTypes) % m.maxJobs
                                 % concatStringsSep<StringSet>(", ", m.supportedFeatures)
                                 % concatStringsSep<StringSet>(", ", m.mandatoryFeatures);
 
@@ -242,9 +237,7 @@ static int main_build_remote(int argc, char * * argv)
                     sshStore->connect();
                 } catch (std::exception & e) {
                     auto msg = chomp(drainFD(5, false));
-                    printError("cannot build on '%s': %s%s",
-                        storeUri, e.what(),
-                        msg.empty() ? "" : ": " + msg);
+                    printError("cannot build on '%s': %s%s", storeUri, e.what(), msg.empty() ? "" : ": " + msg);
                     bestMachine->enabled = false;
                     continue;
                 }
@@ -253,7 +246,7 @@ static int main_build_remote(int argc, char * * argv)
             }
         }
 
-connected:
+    connected:
         close(5);
 
         assert(sshStore);
@@ -265,13 +258,14 @@ connected:
 
         AutoCloseFD uploadLock;
         {
-            auto setUpdateLock = [&](auto && fileName){
+            auto setUpdateLock = [&](auto && fileName) {
                 uploadLock = openLockFile(currentLoad + "/" + escapeUri(fileName) + ".upload-lock", true);
             };
             try {
                 setUpdateLock(storeUri);
             } catch (SysError & e) {
-                if (e.errNo != ENAMETOOLONG) throw;
+                if (e.errNo != ENAMETOOLONG)
+                    throw;
                 // Try again hashing the store URL so we have a shorter path
                 auto h = hashString(HashAlgorithm::MD5, storeUri);
                 setUpdateLock(h.to_string(HashFormat::Base64, false));
@@ -315,7 +309,7 @@ connected:
         //
         // This condition mirrors that: that code enforces the "rules" outlined there;
         // we do the best we can given those "rules".
-        if (trustedOrLegacy || drv.type().isCA())  {
+        if (trustedOrLegacy || drv.type().isCA()) {
             // Hijack the inputs paths of the derivation to include all
             // the paths that come from the `inputDrvs` set. We don’t do
             // that for the derivations whose `inputDrvs` is empty
@@ -330,28 +324,26 @@ connected:
             optResult = sshStore->buildDerivation(*drvPath, (const BasicDerivation &) drv);
             auto & result = *optResult;
             if (!result.success())
-                throw Error("build of '%s' on '%s' failed: %s", store->printStorePath(*drvPath), storeUri, result.errorMsg);
+                throw Error(
+                    "build of '%s' on '%s' failed: %s", store->printStorePath(*drvPath), storeUri, result.errorMsg);
         } else {
-            copyClosure(*store, *sshStore, StorePathSet {*drvPath}, NoRepair, NoCheckSigs, substitute);
-            auto res = sshStore->buildPathsWithResults({
-                DerivedPath::Built {
-                    .drvPath = makeConstantStorePathRef(*drvPath),
-                    .outputs = OutputsSpec::All {},
-                }
-            });
+            copyClosure(*store, *sshStore, StorePathSet{*drvPath}, NoRepair, NoCheckSigs, substitute);
+            auto res = sshStore->buildPathsWithResults({DerivedPath::Built{
+                .drvPath = makeConstantStorePathRef(*drvPath),
+                .outputs = OutputsSpec::All{},
+            }});
             // One path to build should produce exactly one build result
             assert(res.size() == 1);
             optResult = std::move(res[0]);
         }
 
-
         auto outputHashes = staticOutputHashes(*store, drv);
         std::set<Realisation> missingRealisations;
         StorePathSet missingPaths;
         if (experimentalFeatureSettings.isEnabled(Xp::CaDerivations) && !drv.type().hasKnownOutputPaths()) {
             for (auto & outputName : wantedOutputs) {
                 auto thisOutputHash = outputHashes.at(outputName);
-                auto thisOutputId = DrvOutput{ thisOutputHash, outputName };
+                auto thisOutputId = DrvOutput{thisOutputHash, outputName};
                 if (!store->queryRealisation(thisOutputId)) {
                     debug("missing output %s", outputName);
                     assert(optResult);

src/libcmd/built-path.cc

@@ -10,23 +10,13 @@
 namespace nix {
 
 // Custom implementation to avoid `ref` ptr equality
-GENERATE_CMP_EXT(
-    ,
-    std::strong_ordering,
-    SingleBuiltPathBuilt,
-    *me->drvPath,
-    me->output);
+GENERATE_CMP_EXT(, std::strong_ordering, SingleBuiltPathBuilt, *me->drvPath, me->output);
 
 // Custom implementation to avoid `ref` ptr equality
 
 // TODO no `GENERATE_CMP_EXT` because no `std::set::operator<=>` on
 // Darwin, per header.
-GENERATE_EQUAL(
-    ,
-    BuiltPathBuilt ::,
-    BuiltPathBuilt,
-    *me->drvPath,
-    me->outputs);
+GENERATE_EQUAL(, BuiltPathBuilt ::, BuiltPathBuilt, *me->drvPath, me->outputs);
 
 StorePath SingleBuiltPath::outPath() const
 {
@@ -34,8 +24,8 @@ StorePath SingleBuiltPath::outPath() const
         overloaded{
             [](const SingleBuiltPath::Opaque & p) { return p.path; },
             [](const SingleBuiltPath::Built & b) { return b.output.second; },
-        }, raw()
-    );
+        },
+        raw());
 }
 
 StorePathSet BuiltPath::outPaths() const
@@ -49,13 +39,13 @@ StorePathSet BuiltPath::outPaths() const
                     res.insert(path);
                 return res;
             },
-        }, raw()
-    );
+        },
+        raw());
 }
 
 SingleDerivedPath::Built SingleBuiltPath::Built::discardOutputPath() const
 {
-    return SingleDerivedPath::Built {
+    return SingleDerivedPath::Built{
         .drvPath = make_ref<SingleDerivedPath>(drvPath->discardOutputPath()),
         .output = output.first,
     };
@@ -65,14 +55,10 @@ SingleDerivedPath SingleBuiltPath::discardOutputPath() const
 {
     return std::visit(
         overloaded{
-            [](const SingleBuiltPath::Opaque & p) -> SingleDerivedPath {
-                return p;
-            },
-            [](const SingleBuiltPath::Built & b) -> SingleDerivedPath {
-                return b.discardOutputPath();
-            },
-        }, raw()
-    );
+            [](const SingleBuiltPath::Opaque & p) -> SingleDerivedPath { return p; },
+            [](const SingleBuiltPath::Built & b) -> SingleDerivedPath { return b.discardOutputPath(); },
+        },
+        raw());
 }
 
 nlohmann::json BuiltPath::Built::toJSON(const StoreDirConfig & store) const
@@ -97,16 +83,12 @@ nlohmann::json SingleBuiltPath::Built::toJSON(const StoreDirConfig & store) cons
 
 nlohmann::json SingleBuiltPath::toJSON(const StoreDirConfig & store) const
 {
-    return std::visit([&](const auto & buildable) {
-        return buildable.toJSON(store);
-    }, raw());
+    return std::visit([&](const auto & buildable) { return buildable.toJSON(store); }, raw());
 }
 
 nlohmann::json BuiltPath::toJSON(const StoreDirConfig & store) const
 {
-    return std::visit([&](const auto & buildable) {
-        return buildable.toJSON(store);
-    }, raw());
+    return std::visit([&](const auto & buildable) { return buildable.toJSON(store); }, raw());
 }
 
 RealisedPath::Set BuiltPath::toRealisedPaths(Store & store) const
@@ -116,20 +98,18 @@ RealisedPath::Set BuiltPath::toRealisedPaths(Store & store) const
         overloaded{
             [&](const BuiltPath::Opaque & p) { res.insert(p.path); },
             [&](const BuiltPath::Built & p) {
-                auto drvHashes =
-                    staticOutputHashes(store, store.readDerivation(p.drvPath->outPath()));
-                for (auto& [outputName, outputPath] : p.outputs) {
-                    if (experimentalFeatureSettings.isEnabled(
-                                Xp::CaDerivations)) {
+                auto drvHashes = staticOutputHashes(store, store.readDerivation(p.drvPath->outPath()));
+                for (auto & [outputName, outputPath] : p.outputs) {
+                    if (experimentalFeatureSettings.isEnabled(Xp::CaDerivations)) {
                         auto drvOutput = get(drvHashes, outputName);
                         if (!drvOutput)
                             throw Error(
                                 "the derivation '%s' has unrealised output '%s' (derived-path.cc/toRealisedPaths)",
-                                store.printStorePath(p.drvPath->outPath()), outputName);
-                        auto thisRealisation = store.queryRealisation(
-                            DrvOutput{*drvOutput, outputName});
-                        assert(thisRealisation);  // We’ve built it, so we must
-                                                  // have the realisation
+                                store.printStorePath(p.drvPath->outPath()),
+                                outputName);
+                        auto thisRealisation = store.queryRealisation(DrvOutput{*drvOutput, outputName});
+                        assert(thisRealisation); // We’ve built it, so we must
+                                                 // have the realisation
                         res.insert(*thisRealisation);
                     } else {
                         res.insert(outputPath);
@@ -141,4 +121,4 @@ RealisedPath::Set BuiltPath::toRealisedPaths(Store & store) const
     return res;
 }
 
-}
+} // namespace nix

src/libcmd/command-installable-value.cc

@@ -8,4 +8,4 @@ void InstallableValueCommand::run(ref<Store> store, ref<Installable> installable
     run(store, installableValue);
 }
 
-}
+} // namespace nix

src/libcmd/command.cc

@@ -402,4 +402,4 @@ void MixOutLinkBase::createOutLinksMaybe(const std::vector<BuiltPathWithResult>
             createOutLinks(outLink, toBuiltPaths(buildables), *store2);
 }
 
-}
+} // namespace nix

src/libcmd/common-eval-args.cc

@@ -18,12 +18,11 @@
 
 namespace nix {
 
-
 fetchers::Settings fetchSettings;
 
 static GlobalConfig::Register rFetchSettings(&fetchSettings);
 
-EvalSettings evalSettings {
+EvalSettings evalSettings{
     settings.readOnlyMode,
     {
         {
@@ -31,10 +30,11 @@ EvalSettings evalSettings {
             [](EvalState & state, std::string_view rest) {
                 experimentalFeatureSettings.require(Xp::Flakes);
                 // FIXME `parseFlakeRef` should take a `std::string_view`.
-                auto flakeRef = parseFlakeRef(fetchSettings, std::string { rest }, {}, true, false);
+                auto flakeRef = parseFlakeRef(fetchSettings, std::string{rest}, {}, true, false);
                 debug("fetching flake search path element '%s''", rest);
                 auto [accessor, lockedRef] = flakeRef.resolve(state.store).lazyFetch(state.store);
-                auto storePath = nix::fetchToStore(*state.store, SourcePath(accessor), FetchMode::Copy, lockedRef.input.getName());
+                auto storePath =
+                    nix::fetchToStore(*state.store, SourcePath(accessor), FetchMode::Copy, lockedRef.input.getName());
                 state.allowPath(storePath);
                 return state.storePath(storePath);
             },
@@ -44,17 +44,14 @@ EvalSettings evalSettings {
 
 static GlobalConfig::Register rEvalSettings(&evalSettings);
 
-
 flake::Settings flakeSettings;
 
 static GlobalConfig::Register rFlakeSettings(&flakeSettings);
 
-
-CompatibilitySettings compatibilitySettings {};
+CompatibilitySettings compatibilitySettings{};
 
 static GlobalConfig::Register rCompatibilitySettings(&compatibilitySettings);
 
-
 MixEvalArgs::MixEvalArgs()
 {
     addFlag({
@@ -62,7 +59,9 @@ MixEvalArgs::MixEvalArgs()
         .description = "Pass the value *expr* as the argument *name* to Nix functions.",
         .category = category,
         .labels = {"name", "expr"},
-        .handler = {[&](std::string name, std::string expr) { autoArgs.insert_or_assign(name, AutoArg{AutoArgExpr{expr}}); }},
+        .handler = {[&](std::string name, std::string expr) {
+            autoArgs.insert_or_assign(name, AutoArg{AutoArgExpr{expr}});
+        }},
     });
 
     addFlag({
@@ -70,7 +69,9 @@ MixEvalArgs::MixEvalArgs()
         .description = "Pass the string *string* as the argument *name* to Nix functions.",
         .category = category,
         .labels = {"name", "string"},
-        .handler = {[&](std::string name, std::string s) { autoArgs.insert_or_assign(name, AutoArg{AutoArgString{s}}); }},
+        .handler = {[&](std::string name, std::string s) {
+            autoArgs.insert_or_assign(name, AutoArg{AutoArgString{s}});
+        }},
     });
 
     addFlag({
@@ -78,7 +79,9 @@ MixEvalArgs::MixEvalArgs()
         .description = "Pass the contents of file *path* as the argument *name* to Nix functions.",
         .category = category,
         .labels = {"name", "path"},
-        .handler = {[&](std::string name, std::string path) { autoArgs.insert_or_assign(name, AutoArg{AutoArgFile{path}}); }},
+        .handler = {[&](std::string name, std::string path) {
+            autoArgs.insert_or_assign(name, AutoArg{AutoArgFile{path}});
+        }},
         .completer = completePath,
     });
 
@@ -102,18 +105,14 @@ MixEvalArgs::MixEvalArgs()
   )",
         .category = category,
         .labels = {"path"},
-        .handler = {[&](std::string s) {
-            lookupPath.elements.emplace_back(LookupPath::Elem::parse(s));
-        }},
+        .handler = {[&](std::string s) { lookupPath.elements.emplace_back(LookupPath::Elem::parse(s)); }},
     });
 
     addFlag({
         .longName = "impure",
         .description = "Allow access to mutable paths and repositories.",
         .category = category,
-        .handler = {[&]() {
-            evalSettings.pureEval = false;
-        }},
+        .handler = {[&]() { evalSettings.pureEval = false; }},
     });
 
     addFlag({
@@ -125,7 +124,8 @@ MixEvalArgs::MixEvalArgs()
             auto from = parseFlakeRef(fetchSettings, _from, std::filesystem::current_path().string());
             auto to = parseFlakeRef(fetchSettings, _to, std::filesystem::current_path().string());
             fetchers::Attrs extraAttrs;
-            if (to.subdir != "") extraAttrs["dir"] = to.subdir;
+            if (to.subdir != "")
+                extraAttrs["dir"] = to.subdir;
             fetchers::overrideRegistry(from.input, to.input, extraAttrs);
         }},
         .completer = {[&](AddCompletions & completions, size_t, std::string_view prefix) {
@@ -136,7 +136,7 @@ MixEvalArgs::MixEvalArgs()
     addFlag({
         .longName = "eval-store",
         .description =
-          R"(
+            R"(
             The [URL of the Nix store](@docroot@/store/types/index.md#store-url-format)
             to use for evaluation, i.e. to store derivations (`.drv` files) and inputs referenced by them.
           )",
@@ -151,20 +151,21 @@ Bindings * MixEvalArgs::getAutoArgs(EvalState & state)
     auto res = state.buildBindings(autoArgs.size());
     for (auto & [name, arg] : autoArgs) {
         auto v = state.allocValue();
-        std::visit(overloaded {
-            [&](const AutoArgExpr & arg) {
-                state.mkThunk_(*v, state.parseExprFromString(arg.expr, compatibilitySettings.nixShellShebangArgumentsRelativeToScript ? state.rootPath(absPath(getCommandBaseDir())) : state.rootPath(".")));
-            },
-            [&](const AutoArgString & arg) {
-                v->mkString(arg.s);
-            },
-            [&](const AutoArgFile & arg) {
-                v->mkString(readFile(arg.path.string()));
-            },
-            [&](const AutoArgStdin & arg) {
-                v->mkString(readFile(STDIN_FILENO));
-            }
-        }, arg);
+        std::visit(
+            overloaded{
+                [&](const AutoArgExpr & arg) {
+                    state.mkThunk_(
+                        *v,
+                        state.parseExprFromString(
+                            arg.expr,
+                            compatibilitySettings.nixShellShebangArgumentsRelativeToScript
+                                ? state.rootPath(absPath(getCommandBaseDir()))
+                                : state.rootPath(".")));
+                },
+                [&](const AutoArgString & arg) { v->mkString(arg.s); },
+                [&](const AutoArgFile & arg) { v->mkString(readFile(arg.path.string())); },
+                [&](const AutoArgStdin & arg) { v->mkString(readFile(STDIN_FILENO)); }},
+            arg);
         res.insert(state.symbols.create(name), v);
     }
     return res.finish();
@@ -173,10 +174,7 @@ Bindings * MixEvalArgs::getAutoArgs(EvalState & state)
 SourcePath lookupFileArg(EvalState & state, std::string_view s, const Path * baseDir)
 {
     if (EvalSettings::isPseudoUrl(s)) {
-        auto accessor = fetchers::downloadTarball(
-            state.store,
-            state.fetchSettings,
-            EvalSettings::resolvePseudoUrl(s));
+        auto accessor = fetchers::downloadTarball(state.store, state.fetchSettings, EvalSettings::resolvePseudoUrl(s));
         auto storePath = fetchToStore(*state.store, SourcePath(accessor), FetchMode::Copy);
         return state.storePath(storePath);
     }
@@ -185,7 +183,8 @@ SourcePath lookupFileArg(EvalState & state, std::string_view s, const Path * bas
         experimentalFeatureSettings.require(Xp::Flakes);
         auto flakeRef = parseFlakeRef(fetchSettings, std::string(s.substr(6)), {}, true, false);
         auto [accessor, lockedRef] = flakeRef.resolve(state.store).lazyFetch(state.store);
-        auto storePath = nix::fetchToStore(*state.store, SourcePath(accessor), FetchMode::Copy, lockedRef.input.getName());
+        auto storePath =
+            nix::fetchToStore(*state.store, SourcePath(accessor), FetchMode::Copy, lockedRef.input.getName());
         state.allowPath(storePath);
         return state.storePath(storePath);
     }
@@ -199,4 +198,4 @@ SourcePath lookupFileArg(EvalState & state, std::string_view s, const Path * bas
         return state.rootPath(baseDir ? absPath(s, *baseDir) : absPath(s));
 }
 
-}
+} // namespace nix

src/libcmd/editor-for.cc

@@ -11,14 +11,12 @@ Strings editorFor(const SourcePath & file, uint32_t line)
         throw Error("cannot open '%s' in an editor because it has no physical path", file);
     auto editor = getEnv("EDITOR").value_or("cat");
     auto args = tokenizeString<Strings>(editor);
-    if (line > 0 && (
-        editor.find("emacs") != std::string::npos ||
-        editor.find("nano") != std::string::npos ||
-        editor.find("vim") != std::string::npos ||
-        editor.find("kak") != std::string::npos))
+    if (line > 0
+        && (editor.find("emacs") != std::string::npos || editor.find("nano") != std::string::npos
+            || editor.find("vim") != std::string::npos || editor.find("kak") != std::string::npos))
         args.push_back(fmt("+%d", line));
     args.push_back(path->string());
     return args;
 }
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/built-path.hh

@@ -8,7 +8,8 @@ namespace nix {
 
 struct SingleBuiltPath;
 
-struct SingleBuiltPathBuilt {
+struct SingleBuiltPathBuilt
+{
     ref<SingleBuiltPath> drvPath;
     std::pair<std::string, StorePath> output;
 
@@ -18,26 +19,25 @@ struct SingleBuiltPathBuilt {
     static SingleBuiltPathBuilt parse(const StoreDirConfig & store, std::string_view, std::string_view);
     nlohmann::json toJSON(const StoreDirConfig & store) const;
 
-    bool operator ==(const SingleBuiltPathBuilt &) const noexcept;
-    std::strong_ordering operator <=>(const SingleBuiltPathBuilt &) const noexcept;
+    bool operator==(const SingleBuiltPathBuilt &) const noexcept;
+    std::strong_ordering operator<=>(const SingleBuiltPathBuilt &) const noexcept;
 };
 
-using _SingleBuiltPathRaw = std::variant<
-    DerivedPathOpaque,
-    SingleBuiltPathBuilt
->;
+using _SingleBuiltPathRaw = std::variant<DerivedPathOpaque, SingleBuiltPathBuilt>;
 
-struct SingleBuiltPath : _SingleBuiltPathRaw {
+struct SingleBuiltPath : _SingleBuiltPathRaw
+{
     using Raw = _SingleBuiltPathRaw;
     using Raw::Raw;
 
     using Opaque = DerivedPathOpaque;
     using Built = SingleBuiltPathBuilt;
 
-    bool operator == (const SingleBuiltPath &) const = default;
-    auto operator <=> (const SingleBuiltPath &) const = default;
+    bool operator==(const SingleBuiltPath &) const = default;
+    auto operator<=>(const SingleBuiltPath &) const = default;
 
-    inline const Raw & raw() const {
+    inline const Raw & raw() const
+    {
         return static_cast<const Raw &>(*this);
     }
 
@@ -51,7 +51,7 @@ struct SingleBuiltPath : _SingleBuiltPathRaw {
 
 static inline ref<SingleBuiltPath> staticDrv(StorePath drvPath)
 {
-    return make_ref<SingleBuiltPath>(SingleBuiltPath::Opaque { drvPath });
+    return make_ref<SingleBuiltPath>(SingleBuiltPath::Opaque{drvPath});
 }
 
 /**
@@ -59,40 +59,41 @@ static inline ref<SingleBuiltPath> staticDrv(StorePath drvPath)
  *
  * See 'BuiltPath' for more an explanation.
  */
-struct BuiltPathBuilt {
+struct BuiltPathBuilt
+{
     ref<SingleBuiltPath> drvPath;
     std::map<std::string, StorePath> outputs;
 
-    bool operator == (const BuiltPathBuilt &) const noexcept;
+    bool operator==(const BuiltPathBuilt &) const noexcept;
     // TODO libc++ 16 (used by darwin) missing `std::map::operator <=>`, can't do yet.
-    //std::strong_ordering operator <=> (const BuiltPathBuilt &) const noexcept;
+    // std::strong_ordering operator <=> (const BuiltPathBuilt &) const noexcept;
 
     std::string to_string(const StoreDirConfig & store) const;
     static BuiltPathBuilt parse(const StoreDirConfig & store, std::string_view, std::string_view);
     nlohmann::json toJSON(const StoreDirConfig & store) const;
 };
 
-using _BuiltPathRaw = std::variant<
-    DerivedPath::Opaque,
-    BuiltPathBuilt
->;
+using _BuiltPathRaw = std::variant<DerivedPath::Opaque, BuiltPathBuilt>;
 
 /**
  * A built path. Similar to a DerivedPath, but enriched with the corresponding
  * output path(s).
  */
-struct BuiltPath : _BuiltPathRaw {
+struct BuiltPath : _BuiltPathRaw
+{
     using Raw = _BuiltPathRaw;
     using Raw::Raw;
 
     using Opaque = DerivedPathOpaque;
     using Built = BuiltPathBuilt;
 
-    bool operator == (const BuiltPath &) const = default;
-    // TODO libc++ 16 (used by darwin) missing `std::map::operator <=>`, can't do yet.
-    //auto operator <=> (const BuiltPath &) const = default;
+    bool operator==(const BuiltPath &) const = default;
 
-    inline const Raw & raw() const {
+    // TODO libc++ 16 (used by darwin) missing `std::map::operator <=>`, can't do yet.
+    // auto operator <=> (const BuiltPath &) const = default;
+
+    inline const Raw & raw() const
+    {
         return static_cast<const Raw &>(*this);
     }
 
@@ -104,4 +105,4 @@ struct BuiltPath : _BuiltPathRaw {
 
 typedef std::vector<BuiltPath> BuiltPaths;
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/command-installable-value.hh

@@ -20,4 +20,4 @@ struct InstallableValueCommand : InstallableCommand
     void run(ref<Store> store, ref<Installable> installable) override;
 };
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/common-eval-args.hh

@@ -12,7 +12,9 @@ namespace nix {
 
 class Store;
 
-namespace fetchers { struct Settings; }
+namespace fetchers {
+struct Settings;
+}
 
 class EvalState;
 struct EvalSettings;
@@ -20,7 +22,9 @@ struct CompatibilitySettings;
 class Bindings;
 struct SourcePath;
 
-namespace flake { struct Settings; }
+namespace flake {
+struct Settings;
+}
 
 /**
  * @todo Get rid of global setttings variables
@@ -55,10 +59,23 @@ struct MixEvalArgs : virtual Args, virtual MixRepair
     std::optional<std::string> evalStoreUrl;
 
 private:
-    struct AutoArgExpr { std::string expr; };
-    struct AutoArgString { std::string s; };
-    struct AutoArgFile { std::filesystem::path path; };
-    struct AutoArgStdin { };
+    struct AutoArgExpr
+    {
+        std::string expr;
+    };
+
+    struct AutoArgString
+    {
+        std::string s;
+    };
+
+    struct AutoArgFile
+    {
+        std::filesystem::path path;
+    };
+
+    struct AutoArgStdin
+    {};
 
     using AutoArg = std::variant<AutoArgExpr, AutoArgString, AutoArgFile, AutoArgStdin>;
 
@@ -70,4 +87,4 @@ private:
  */
 SourcePath lookupFileArg(EvalState & state, std::string_view s, const Path * baseDir = nullptr);
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/compatibility-settings.hh

@@ -33,4 +33,4 @@ struct CompatibilitySettings : public Config
     )"};
 };
 
-};
+}; // namespace nix

src/libcmd/include/nix/cmd/editor-for.hh

@@ -12,4 +12,4 @@ namespace nix {
  */
 Strings editorFor(const SourcePath & file, uint32_t line);
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/installable-attr-path.hh

@@ -39,7 +39,10 @@ class InstallableAttrPath : public InstallableValue
         const std::string & attrPath,
         ExtendedOutputsSpec extendedOutputsSpec);
 
-    std::string what() const override { return attrPath; };
+    std::string what() const override
+    {
+        return attrPath;
+    };
 
     std::pair<Value *, PosIdx> toValue(EvalState & state) override;
 
@@ -55,4 +58,4 @@ public:
         ExtendedOutputsSpec extendedOutputsSpec);
 };
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/installable-derived-path.hh

@@ -11,8 +11,10 @@ struct InstallableDerivedPath : Installable
     DerivedPath derivedPath;
 
     InstallableDerivedPath(ref<Store> store, DerivedPath && derivedPath)
-        : store(store), derivedPath(std::move(derivedPath))
-    { }
+        : store(store)
+        , derivedPath(std::move(derivedPath))
+    {
+    }
 
     std::string what() const override;
 
@@ -20,10 +22,8 @@ struct InstallableDerivedPath : Installable
 
     std::optional<StorePath> getStorePath() override;
 
-    static InstallableDerivedPath parse(
-        ref<Store> store,
-        std::string_view prefix,
-        ExtendedOutputsSpec extendedOutputsSpec);
+    static InstallableDerivedPath
+    parse(ref<Store> store, std::string_view prefix, ExtendedOutputsSpec extendedOutputsSpec);
 };
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/installable-flake.hh

@@ -18,7 +18,8 @@ struct ExtraPathInfoFlake : ExtraPathInfoValue
     /**
      * Extra struct to get around C++ designated initializer limitations
      */
-    struct Flake {
+    struct Flake
+    {
         FlakeRef originalRef;
         FlakeRef lockedRef;
     };
@@ -26,8 +27,10 @@ struct ExtraPathInfoFlake : ExtraPathInfoValue
     Flake flake;
 
     ExtraPathInfoFlake(Value && v, Flake && f)
-        : ExtraPathInfoValue(std::move(v)), flake(std::move(f))
-    { }
+        : ExtraPathInfoValue(std::move(v))
+        , flake(std::move(f))
+    {
+    }
 };
 
 struct InstallableFlake : InstallableValue
@@ -49,7 +52,10 @@ struct InstallableFlake : InstallableValue
         Strings prefixes,
         const flake::LockFlags & lockFlags);
 
-    std::string what() const override { return flakeRef.to_string() + "#" + *attrPaths.begin(); }
+    std::string what() const override
+    {
+        return flakeRef.to_string() + "#" + *attrPaths.begin();
+    }
 
     std::vector<std::string> getActualAttrPaths();
 
@@ -61,8 +67,7 @@ struct InstallableFlake : InstallableValue
      * Get a cursor to every attrpath in getActualAttrPaths() that
      * exists. However if none exists, throw an exception.
      */
-    std::vector<ref<eval_cache::AttrCursor>>
-    getCursors(EvalState & state) override;
+    std::vector<ref<eval_cache::AttrCursor>> getCursors(EvalState & state) override;
 
     std::shared_ptr<flake::LockedFlake> getLockedFlake() const;
 
@@ -79,11 +84,9 @@ struct InstallableFlake : InstallableValue
  */
 static inline FlakeRef defaultNixpkgsFlakeRef()
 {
-    return FlakeRef::fromAttrs(fetchSettings, {{"type","indirect"}, {"id", "nixpkgs"}});
+    return FlakeRef::fromAttrs(fetchSettings, {{"type", "indirect"}, {"id", "nixpkgs"}});
 }
 
-ref<eval_cache::EvalCache> openEvalCache(
-    EvalState & state,
-    std::shared_ptr<flake::LockedFlake> lockedFlake);
+ref<eval_cache::EvalCache> openEvalCache(EvalState & state, std::shared_ptr<flake::LockedFlake> lockedFlake);
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/installable-value.hh

@@ -9,7 +9,10 @@ namespace nix {
 struct PackageInfo;
 struct SourceExprCommand;
 
-namespace eval_cache { class EvalCache; class AttrCursor; }
+namespace eval_cache {
+class EvalCache;
+class AttrCursor;
+} // namespace eval_cache
 
 struct App
 {
@@ -37,7 +40,8 @@ struct ExtraPathInfoValue : ExtraPathInfo
     /**
      * Extra struct to get around C++ designated initializer limitations
      */
-    struct Value {
+    struct Value
+    {
         /**
          * An optional priority for use with "build envs". See Package
          */
@@ -61,7 +65,8 @@ struct ExtraPathInfoValue : ExtraPathInfo
 
     ExtraPathInfoValue(Value && v)
         : value(std::move(v))
-    { }
+    {
+    }
 
     virtual ~ExtraPathInfoValue() = default;
 };
@@ -74,9 +79,12 @@ struct InstallableValue : Installable
 {
     ref<EvalState> state;
 
-    InstallableValue(ref<EvalState> state) : state(state) {}
+    InstallableValue(ref<EvalState> state)
+        : state(state)
+    {
+    }
 
-    virtual ~InstallableValue() { }
+    virtual ~InstallableValue() {}
 
     virtual std::pair<Value *, PosIdx> toValue(EvalState & state) = 0;
 
@@ -85,15 +93,13 @@ struct InstallableValue : Installable
      * However if none exists, throw exception instead of returning
      * empty vector.
      */
-    virtual std::vector<ref<eval_cache::AttrCursor>>
-    getCursors(EvalState & state);
+    virtual std::vector<ref<eval_cache::AttrCursor>> getCursors(EvalState & state);
 
     /**
      * Get the first and most preferred cursor this Installable could
      * refer to, or throw an exception if none exists.
      */
-    virtual ref<eval_cache::AttrCursor>
-    getCursor(EvalState & state);
+    virtual ref<eval_cache::AttrCursor> getCursor(EvalState & state);
 
     UnresolvedApp toApp(EvalState & state);
 
@@ -116,7 +122,8 @@ protected:
      * @result A derived path (with empty info, for now) if the value
      * matched the above criteria.
      */
-    std::optional<DerivedPathWithInfo> trySinglePathToDerivedPaths(Value & v, const PosIdx pos, std::string_view errorCtx);
+    std::optional<DerivedPathWithInfo>
+    trySinglePathToDerivedPaths(Value & v, const PosIdx pos, std::string_view errorCtx);
 };
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/installables.hh

@@ -112,7 +112,7 @@ typedef std::vector<ref<Installable>> Installables;
  */
 struct Installable
 {
-    virtual ~Installable() { }
+    virtual ~Installable() {}
 
     /**
      * What Installable is this?
@@ -168,37 +168,19 @@ struct Installable
         BuildMode bMode = bmNormal);
 
     static std::set<StorePath> toStorePathSet(
-        ref<Store> evalStore,
-        ref<Store> store,
-        Realise mode,
-        OperateOn operateOn,
-        const Installables & installables);
+        ref<Store> evalStore, ref<Store> store, Realise mode, OperateOn operateOn, const Installables & installables);
 
     static std::vector<StorePath> toStorePaths(
-        ref<Store> evalStore,
-        ref<Store> store,
-        Realise mode,
-        OperateOn operateOn,
-        const Installables & installables);
+        ref<Store> evalStore, ref<Store> store, Realise mode, OperateOn operateOn, const Installables & installables);
 
     static StorePath toStorePath(
-        ref<Store> evalStore,
-        ref<Store> store,
-        Realise mode,
-        OperateOn operateOn,
-        ref<Installable> installable);
+        ref<Store> evalStore, ref<Store> store, Realise mode, OperateOn operateOn, ref<Installable> installable);
 
-    static std::set<StorePath> toDerivations(
-        ref<Store> store,
-        const Installables & installables,
-        bool useDeriver = false);
+    static std::set<StorePath>
+    toDerivations(ref<Store> store, const Installables & installables, bool useDeriver = false);
 
     static BuiltPaths toBuiltPaths(
-        ref<Store> evalStore,
-        ref<Store> store,
-        Realise mode,
-        OperateOn operateOn,
-        const Installables & installables);
+        ref<Store> evalStore, ref<Store> store, Realise mode, OperateOn operateOn, const Installables & installables);
 };
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/legacy.hh

@@ -7,13 +7,14 @@
 
 namespace nix {
 
-typedef std::function<void(int, char * *)> MainFunction;
+typedef std::function<void(int, char **)> MainFunction;
 
 struct RegisterLegacyCommand
 {
     typedef std::map<std::string, MainFunction> Commands;
 
-    static Commands & commands() {
+    static Commands & commands()
+    {
         static Commands commands;
         return commands;
     }
@@ -24,4 +25,4 @@ struct RegisterLegacyCommand
     }
 };
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/markdown.hh

@@ -14,4 +14,4 @@ namespace nix {
  */
 std::string renderMarkdownToTerminal(std::string_view markdown);
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/misc-store-flags.hh

@@ -4,18 +4,22 @@
 namespace nix::flag {
 
 Args::Flag hashAlgo(std::string && longName, HashAlgorithm * ha);
+
 static inline Args::Flag hashAlgo(HashAlgorithm * ha)
 {
     return hashAlgo("hash-algo", ha);
 }
+
 Args::Flag hashAlgoOpt(std::string && longName, std::optional<HashAlgorithm> * oha);
 Args::Flag hashFormatWithDefault(std::string && longName, HashFormat * hf);
 Args::Flag hashFormatOpt(std::string && longName, std::optional<HashFormat> * ohf);
+
 static inline Args::Flag hashAlgoOpt(std::optional<HashAlgorithm> * oha)
 {
     return hashAlgoOpt("hash-algo", oha);
 }
+
 Args::Flag fileIngestionMethod(FileIngestionMethod * method);
 Args::Flag contentAddressMethod(ContentAddressMethod * method);
 
-}
+} // namespace nix::flag

src/libcmd/include/nix/cmd/network-proxy.hh

@@ -19,4 +19,4 @@ extern const StringSet networkProxyVariables;
  */
 bool haveNetworkProxyConnection();
 
-}
+} // namespace nix

src/libcmd/include/nix/cmd/repl-interacter.hh

@@ -11,10 +11,11 @@ namespace nix {
 namespace detail {
 /** Provides the completion hooks for the repl, without exposing its complete
  * internals. */
-struct ReplCompleterMixin {
+struct ReplCompleterMixin
+{
     virtual StringSet completePrefix(const std::string & prefix) = 0;
 };
-};
+}; // namespace detail
 
 enum class ReplPromptType {
     ReplPrompt,
@@ -29,7 +30,7 @@ public:
     virtual Guard init(detail::ReplCompleterMixin * repl) = 0;
     /** Returns a boolean of whether the interacter got EOF */
     virtual bool getLine(std::string & input, ReplPromptType promptType) = 0;
-    virtual ~ReplInteracter(){};
+    virtual ~ReplInteracter() {};
 };
 
 class ReadlineLikeInteracter : public virtual ReplInteracter
@@ -40,9 +41,10 @@ public:
         : historyFile(historyFile)
     {
     }
+
     virtual Guard init(detail::ReplCompleterMixin * repl) override;
     virtual bool getLine(std::string & input, ReplPromptType promptType) override;
     virtual ~ReadlineLikeInteracter() override;
 };
 
-};
+}; // namespace nix

src/libcmd/include/nix/cmd/repl.hh

@@ -12,12 +12,12 @@ struct AbstractNixRepl
 
     AbstractNixRepl(ref<EvalState> state)
         : state(state)
-    { }
+    {
+    }
 
-    virtual ~AbstractNixRepl()
-    { }
+    virtual ~AbstractNixRepl() {}
 
-    typedef std::vector<std::pair<Value*,std::string>> AnnotatedValues;
+    typedef std::vector<std::pair<Value *, std::string>> AnnotatedValues;
 
     using RunNix = void(Path program, const Strings & args, const std::optional<std::string> & input);
 
@@ -33,13 +33,11 @@ struct AbstractNixRepl
         std::function<AnnotatedValues()> getValues,
         RunNix * runNix = nullptr);
 
-    static ReplExitStatus runSimple(
-        ref<EvalState> evalState,
-        const ValMap & extraEnv);
+    static ReplExitStatus runSimple(ref<EvalState> evalState, const ValMap & extraEnv);
 
     virtual void initEnv() = 0;
 
     virtual ReplExitStatus mainLoop() = 0;
 };
 
-}
+} // namespace nix

src/libcmd/installable-attr-path.cc

@@ -35,7 +35,8 @@ InstallableAttrPath::InstallableAttrPath(
     , v(allocRootValue(v))
     , attrPath(attrPath)
     , extendedOutputsSpec(std::move(extendedOutputsSpec))
-{ }
+{
+}
 
 std::pair<Value *, PosIdx> InstallableAttrPath::toValue(EvalState & state)
 {
@@ -48,12 +49,9 @@ DerivedPathsWithInfo InstallableAttrPath::toDerivedPaths()
 {
     auto [v, pos] = toValue(*state);
 
-    if (std::optional derivedPathWithInfo = trySinglePathToDerivedPaths(
-        *v,
-        pos,
-        fmt("while evaluating the attribute '%s'", attrPath)))
-    {
-        return { *derivedPathWithInfo };
+    if (std::optional derivedPathWithInfo =
+            trySinglePathToDerivedPaths(*v, pos, fmt("while evaluating the attribute '%s'", attrPath))) {
+        return {*derivedPathWithInfo};
     }
 
     Bindings & autoArgs = *cmd.getAutoArgs(*state);
@@ -70,19 +68,19 @@ DerivedPathsWithInfo InstallableAttrPath::toDerivedPaths()
         if (!drvPath)
             throw Error("'%s' is not a derivation", what());
 
-        auto newOutputs = std::visit(overloaded {
-            [&](const ExtendedOutputsSpec::Default & d) -> OutputsSpec {
-                StringSet outputsToInstall;
-                for (auto & output : packageInfo.queryOutputs(false, true))
-                    outputsToInstall.insert(output.first);
-                if (outputsToInstall.empty())
-                    outputsToInstall.insert("out");
-                return OutputsSpec::Names { std::move(outputsToInstall) };
+        auto newOutputs = std::visit(
+            overloaded{
+                [&](const ExtendedOutputsSpec::Default & d) -> OutputsSpec {
+                    StringSet outputsToInstall;
+                    for (auto & output : packageInfo.queryOutputs(false, true))
+                        outputsToInstall.insert(output.first);
+                    if (outputsToInstall.empty())
+                        outputsToInstall.insert("out");
+                    return OutputsSpec::Names{std::move(outputsToInstall)};
+                },
+                [&](const ExtendedOutputsSpec::Explicit & e) -> OutputsSpec { return e; },
             },
-            [&](const ExtendedOutputsSpec::Explicit & e) -> OutputsSpec {
-                return e;
-            },
-        }, extendedOutputsSpec.raw);
+            extendedOutputsSpec.raw);
 
         auto [iter, didInsert] = byDrvPath.emplace(*drvPath, newOutputs);
 
@@ -93,11 +91,12 @@ DerivedPathsWithInfo InstallableAttrPath::toDerivedPaths()
     DerivedPathsWithInfo res;
     for (auto & [drvPath, outputs] : byDrvPath)
         res.push_back({
-            .path = DerivedPath::Built {
-                .drvPath = makeConstantStorePathRef(drvPath),
-                .outputs = outputs,
-            },
-            .info = make_ref<ExtraPathInfoValue>(ExtraPathInfoValue::Value {
+            .path =
+                DerivedPath::Built{
+                    .drvPath = makeConstantStorePathRef(drvPath),
+                    .outputs = outputs,
+                },
+            .info = make_ref<ExtraPathInfoValue>(ExtraPathInfoValue::Value{
                 .extendedOutputsSpec = outputs,
                 /* FIXME: reconsider backwards compatibility above
                    so we can fill in this info. */
@@ -115,10 +114,12 @@ InstallableAttrPath InstallableAttrPath::parse(
     ExtendedOutputsSpec extendedOutputsSpec)
 {
     return {
-        state, cmd, v,
-        prefix == "." ? "" : std::string { prefix },
+        state,
+        cmd,
+        v,
+        prefix == "." ? "" : std::string{prefix},
         std::move(extendedOutputsSpec),
     };
 }
 
-}
+} // namespace nix

src/libcmd/installable-derived-path.cc

@@ -21,35 +21,35 @@ std::optional<StorePath> InstallableDerivedPath::getStorePath()
     return derivedPath.getBaseStorePath();
 }
 
-InstallableDerivedPath InstallableDerivedPath::parse(
-    ref<Store> store,
-    std::string_view prefix,
-    ExtendedOutputsSpec extendedOutputsSpec)
+InstallableDerivedPath
+InstallableDerivedPath::parse(ref<Store> store, std::string_view prefix, ExtendedOutputsSpec extendedOutputsSpec)
 {
-    auto derivedPath = std::visit(overloaded {
-        // If the user did not use ^, we treat the output more
-        // liberally: we accept a symlink chain or an actual
-        // store path.
-        [&](const ExtendedOutputsSpec::Default &) -> DerivedPath {
-            auto storePath = store->followLinksToStorePath(prefix);
-            return DerivedPath::Opaque {
-                .path = std::move(storePath),
-            };
+    auto derivedPath = std::visit(
+        overloaded{
+            // If the user did not use ^, we treat the output more
+            // liberally: we accept a symlink chain or an actual
+            // store path.
+            [&](const ExtendedOutputsSpec::Default &) -> DerivedPath {
+                auto storePath = store->followLinksToStorePath(prefix);
+                return DerivedPath::Opaque{
+                    .path = std::move(storePath),
+                };
+            },
+            // If the user did use ^, we just do exactly what is written.
+            [&](const ExtendedOutputsSpec::Explicit & outputSpec) -> DerivedPath {
+                auto drv = make_ref<SingleDerivedPath>(SingleDerivedPath::parse(*store, prefix));
+                drvRequireExperiment(*drv);
+                return DerivedPath::Built{
+                    .drvPath = std::move(drv),
+                    .outputs = outputSpec,
+                };
+            },
         },
-        // If the user did use ^, we just do exactly what is written.
-        [&](const ExtendedOutputsSpec::Explicit & outputSpec) -> DerivedPath {
-            auto drv = make_ref<SingleDerivedPath>(SingleDerivedPath::parse(*store, prefix));
-            drvRequireExperiment(*drv);
-            return DerivedPath::Built {
-                .drvPath = std::move(drv),
-                .outputs = outputSpec,
-            };
-        },
-    }, extendedOutputsSpec.raw);
-    return InstallableDerivedPath {
+        extendedOutputsSpec.raw);
+    return InstallableDerivedPath{
         store,
         std::move(derivedPath),
     };
 }
 
-}
+} // namespace nix

src/libcmd/installable-flake.cc

@@ -28,8 +28,8 @@ namespace nix {
 std::vector<std::string> InstallableFlake::getActualAttrPaths()
 {
     std::vector<std::string> res;
-    if (attrPaths.size() == 1 && attrPaths.front().starts_with(".")){
-        attrPaths.front().erase(0,1);
+    if (attrPaths.size() == 1 && attrPaths.front().starts_with(".")) {
+        attrPaths.front().erase(0, 1);
         res.push_back(attrPaths.front());
         return res;
     }
@@ -47,8 +47,11 @@ static std::string showAttrPaths(const std::vector<std::string> & paths)
 {
     std::string s;
     for (const auto & [n, i] : enumerate(paths)) {
-        if (n > 0) s += n + 1 == paths.size() ? " or " : ", ";
-        s += '\''; s += i; s += '\'';
+        if (n > 0)
+            s += n + 1 == paths.size() ? " or " : ", ";
+        s += '\'';
+        s += i;
+        s += '\'';
     }
     return s;
 }
@@ -62,12 +65,12 @@ InstallableFlake::InstallableFlake(
     Strings attrPaths,
     Strings prefixes,
     const flake::LockFlags & lockFlags)
-    : InstallableValue(state),
-      flakeRef(flakeRef),
-      attrPaths(fragment == "" ? attrPaths : Strings{(std::string) fragment}),
-      prefixes(fragment == "" ? Strings{} : prefixes),
-      extendedOutputsSpec(std::move(extendedOutputsSpec)),
-      lockFlags(lockFlags)
+    : InstallableValue(state)
+    , flakeRef(flakeRef)
+    , attrPaths(fragment == "" ? attrPaths : Strings{(std::string) fragment})
+    , prefixes(fragment == "" ? Strings{} : prefixes)
+    , extendedOutputsSpec(std::move(extendedOutputsSpec))
+    , lockFlags(lockFlags)
 {
     if (cmd && cmd->getAutoArgs(*state)->size())
         throw UsageError("'--arg' and '--argstr' are incompatible with flakes");
@@ -87,18 +90,14 @@ DerivedPathsWithInfo InstallableFlake::toDerivedPaths()
         auto v = attr->forceValue();
 
         if (std::optional derivedPathWithInfo = trySinglePathToDerivedPaths(
-            v,
-            noPos,
-            fmt("while evaluating the flake output attribute '%s'", attrPath)))
-        {
-            return { *derivedPathWithInfo };
+                v, noPos, fmt("while evaluating the flake output attribute '%s'", attrPath))) {
+            return {*derivedPathWithInfo};
         } else {
             throw Error(
                 "expected flake output attribute '%s' to be a derivation or path but found %s: %s",
                 attrPath,
                 showType(v),
-                ValuePrinter(*this->state, v, errorPrintOptions)
-            );
+                ValuePrinter(*this->state, v, errorPrintOptions));
         }
     }
 
@@ -113,39 +112,40 @@ DerivedPathsWithInfo InstallableFlake::toDerivedPaths()
     }
 
     return {{
-        .path = DerivedPath::Built {
-            .drvPath = makeConstantStorePathRef(std::move(drvPath)),
-            .outputs = std::visit(overloaded {
-                [&](const ExtendedOutputsSpec::Default & d) -> OutputsSpec {
-                    StringSet outputsToInstall;
-                    if (auto aOutputSpecified = attr->maybeGetAttr(state->sOutputSpecified)) {
-                        if (aOutputSpecified->getBool()) {
-                            if (auto aOutputName = attr->maybeGetAttr("outputName"))
-                                outputsToInstall = { aOutputName->getString() };
-                        }
-                    } else if (auto aMeta = attr->maybeGetAttr(state->sMeta)) {
-                        if (auto aOutputsToInstall = aMeta->maybeGetAttr("outputsToInstall"))
-                            for (auto & s : aOutputsToInstall->getListOfStrings())
-                                outputsToInstall.insert(s);
-                    }
+        .path =
+            DerivedPath::Built{
+                .drvPath = makeConstantStorePathRef(std::move(drvPath)),
+                .outputs = std::visit(
+                    overloaded{
+                        [&](const ExtendedOutputsSpec::Default & d) -> OutputsSpec {
+                            StringSet outputsToInstall;
+                            if (auto aOutputSpecified = attr->maybeGetAttr(state->sOutputSpecified)) {
+                                if (aOutputSpecified->getBool()) {
+                                    if (auto aOutputName = attr->maybeGetAttr("outputName"))
+                                        outputsToInstall = {aOutputName->getString()};
+                                }
+                            } else if (auto aMeta = attr->maybeGetAttr(state->sMeta)) {
+                                if (auto aOutputsToInstall = aMeta->maybeGetAttr("outputsToInstall"))
+                                    for (auto & s : aOutputsToInstall->getListOfStrings())
+                                        outputsToInstall.insert(s);
+                            }
 
-                    if (outputsToInstall.empty())
-                        outputsToInstall.insert("out");
+                            if (outputsToInstall.empty())
+                                outputsToInstall.insert("out");
 
-                    return OutputsSpec::Names { std::move(outputsToInstall) };
-                },
-                [&](const ExtendedOutputsSpec::Explicit & e) -> OutputsSpec {
-                    return e;
-                },
-            }, extendedOutputsSpec.raw),
-        },
+                            return OutputsSpec::Names{std::move(outputsToInstall)};
+                        },
+                        [&](const ExtendedOutputsSpec::Explicit & e) -> OutputsSpec { return e; },
+                    },
+                    extendedOutputsSpec.raw),
+            },
         .info = make_ref<ExtraPathInfoFlake>(
-            ExtraPathInfoValue::Value {
+            ExtraPathInfoValue::Value{
                 .priority = priority,
                 .attrPath = attrPath,
                 .extendedOutputsSpec = extendedOutputsSpec,
             },
-            ExtraPathInfoFlake::Flake {
+            ExtraPathInfoFlake::Flake{
                 .originalRef = flakeRef,
                 .lockedRef = getLockedFlake()->flake.lockedRef,
             }),
@@ -157,8 +157,7 @@ std::pair<Value *, PosIdx> InstallableFlake::toValue(EvalState & state)
     return {&getCursor(state)->forceValue(), noPos};
 }
 
-std::vector<ref<eval_cache::AttrCursor>>
-InstallableFlake::getCursors(EvalState & state)
+std::vector<ref<eval_cache::AttrCursor>> InstallableFlake::getCursors(EvalState & state)
 {
     auto evalCache = openEvalCache(state, getLockedFlake());
 
@@ -181,11 +180,7 @@ InstallableFlake::getCursors(EvalState & state)
     }
 
     if (res.size() == 0)
-        throw Error(
-            suggestions,
-            "flake '%s' does not provide attribute %s",
-            flakeRef,
-            showAttrPaths(attrPaths));
+        throw Error(suggestions, "flake '%s' does not provide attribute %s", flakeRef, showAttrPaths(attrPaths));
 
     return res;
 }
@@ -196,8 +191,8 @@ std::shared_ptr<flake::LockedFlake> InstallableFlake::getLockedFlake() const
         flake::LockFlags lockFlagsApplyConfig = lockFlags;
         // FIXME why this side effect?
         lockFlagsApplyConfig.applyNixConfig = true;
-        _lockedFlake = std::make_shared<flake::LockedFlake>(lockFlake(
-            flakeSettings, *state, flakeRef, lockFlagsApplyConfig));
+        _lockedFlake =
+            std::make_shared<flake::LockedFlake>(lockFlake(flakeSettings, *state, flakeRef, lockFlagsApplyConfig));
     }
     return _lockedFlake;
 }
@@ -216,4 +211,4 @@ FlakeRef InstallableFlake::nixpkgsFlakeRef() const
     return defaultNixpkgsFlakeRef();
 }
 
-}
+} // namespace nix

src/libcmd/installable-value.cc

@@ -4,17 +4,14 @@
 
 namespace nix {
 
-std::vector<ref<eval_cache::AttrCursor>>
-InstallableValue::getCursors(EvalState & state)
+std::vector<ref<eval_cache::AttrCursor>> InstallableValue::getCursors(EvalState & state)
 {
     auto evalCache =
-        std::make_shared<nix::eval_cache::EvalCache>(std::nullopt, state,
-            [&]() { return toValue(state).first; });
+        std::make_shared<nix::eval_cache::EvalCache>(std::nullopt, state, [&]() { return toValue(state).first; });
     return {evalCache->getRoot()};
 }
 
-ref<eval_cache::AttrCursor>
-InstallableValue::getCursor(EvalState & state)
+ref<eval_cache::AttrCursor> InstallableValue::getCursor(EvalState & state)
 {
     /* Although getCursors should return at least one element, in case it doesn't,
        bound check to avoid an undefined behavior for vector[0] */
@@ -39,30 +36,32 @@ ref<InstallableValue> InstallableValue::require(ref<Installable> installable)
     auto castedInstallable = installable.dynamic_pointer_cast<InstallableValue>();
     if (!castedInstallable)
         throw nonValueInstallable(*installable);
-    return ref { castedInstallable };
+    return ref{castedInstallable};
 }
 
-std::optional<DerivedPathWithInfo> InstallableValue::trySinglePathToDerivedPaths(Value & v, const PosIdx pos, std::string_view errorCtx)
+std::optional<DerivedPathWithInfo>
+InstallableValue::trySinglePathToDerivedPaths(Value & v, const PosIdx pos, std::string_view errorCtx)
 {
     if (v.type() == nPath) {
         auto storePath = fetchToStore(*state->store, v.path(), FetchMode::Copy);
         return {{
-            .path = DerivedPath::Opaque {
-                .path = std::move(storePath),
-            },
+            .path =
+                DerivedPath::Opaque{
+                    .path = std::move(storePath),
+                },
             .info = make_ref<ExtraPathInfo>(),
         }};
     }
 
     else if (v.type() == nString) {
         return {{
-            .path = DerivedPath::fromSingle(
-                state->coerceToSingleDerivedPath(pos, v, errorCtx)),
+            .path = DerivedPath::fromSingle(state->coerceToSingleDerivedPath(pos, v, errorCtx)),
             .info = make_ref<ExtraPathInfo>(),
         }};
     }
 
-    else return std::nullopt;
+    else
+        return std::nullopt;
 }
 
-}
+} // namespace nix

src/libcmd/installables.cc

@@ -61,7 +61,8 @@ MixFlakeOptions::MixFlakeOptions()
         .category = category,
         .handler = {[&]() {
             lockFlags.recreateLockFile = true;
-            warn("'--recreate-lock-file' is deprecated and will be removed in a future version; use 'nix flake update' instead.");
+            warn(
+                "'--recreate-lock-file' is deprecated and will be removed in a future version; use 'nix flake update' instead.");
         }},
     });
 
@@ -158,9 +159,7 @@ MixFlakeOptions::MixFlakeOptions()
         .description = "Write the given lock file instead of `flake.lock` within the top-level flake.",
         .category = category,
         .labels = {"flake-lock-path"},
-        .handler = {[&](std::string lockFilePath) {
-            lockFlags.outputLockFilePath = lockFilePath;
-        }},
+        .handler = {[&](std::string lockFilePath) { lockFlags.outputLockFilePath = lockFilePath; }},
         .completer = completePath,
     });
 
@@ -175,12 +174,12 @@ MixFlakeOptions::MixFlakeOptions()
                 flakeSettings,
                 *evalState,
                 parseFlakeRef(fetchSettings, flakeRef, absPath(getCommandBaseDir())),
-                { .writeLockFile = false });
+                {.writeLockFile = false});
             for (auto & [inputName, input] : flake.lockFile.root->inputs) {
                 auto input2 = flake.lockFile.findInput({inputName}); // resolve 'follows' nodes
                 if (auto input3 = std::dynamic_pointer_cast<const flake::LockedNode>(input2)) {
                     overrideRegistry(
-                        fetchers::Input::fromAttrs(fetchSettings, {{"type","indirect"}, {"id", inputName}}),
+                        fetchers::Input::fromAttrs(fetchSettings, {{"type", "indirect"}, {"id", inputName}}),
                         input3->lockedRef.input,
                         {});
                 }
@@ -209,7 +208,8 @@ SourceExprCommand::SourceExprCommand()
 
     addFlag({
         .longName = "expr",
-        .description = "Interpret [*installables*](@docroot@/command-ref/new-cli/nix.md#installables) as attribute paths relative to the Nix expression *expr*.",
+        .description =
+            "Interpret [*installables*](@docroot@/command-ref/new-cli/nix.md#installables) as attribute paths relative to the Nix expression *expr*.",
         .category = installablesCategory,
         .labels = {"expr"},
         .handler = {&expr},
@@ -220,32 +220,26 @@ MixReadOnlyOption::MixReadOnlyOption()
 {
     addFlag({
         .longName = "read-only",
-        .description =
-            "Do not instantiate each evaluated derivation. "
-            "This improves performance, but can cause errors when accessing "
-            "store paths of derivations during evaluation.",
+        .description = "Do not instantiate each evaluated derivation. "
+                       "This improves performance, but can cause errors when accessing "
+                       "store paths of derivations during evaluation.",
         .handler = {&settings.readOnlyMode, true},
     });
 }
 
 Strings SourceExprCommand::getDefaultFlakeAttrPaths()
 {
-    return {
-        "packages." + settings.thisSystem.get() + ".default",
-        "defaultPackage." + settings.thisSystem.get()
-    };
+    return {"packages." + settings.thisSystem.get() + ".default", "defaultPackage." + settings.thisSystem.get()};
 }
 
 Strings SourceExprCommand::getDefaultFlakeAttrPathPrefixes()
 {
-    return {
-        // As a convenience, look for the attribute in
-        // 'outputs.packages'.
-        "packages." + settings.thisSystem.get() + ".",
-        // As a temporary hack until Nixpkgs is properly converted
-        // to provide a clean 'packages' set, look in 'legacyPackages'.
-        "legacyPackages." + settings.thisSystem.get() + "."
-    };
+    return {// As a convenience, look for the attribute in
+            // 'outputs.packages'.
+            "packages." + settings.thisSystem.get() + ".",
+            // As a temporary hack until Nixpkgs is properly converted
+            // to provide a clean 'packages' set, look in 'legacyPackages'.
+            "legacyPackages." + settings.thisSystem.get() + "."};
 }
 
 Args::CompleterClosure SourceExprCommand::getCompleteInstallable()
@@ -263,10 +257,7 @@ void SourceExprCommand::completeInstallable(AddCompletions & completions, std::s
 
             evalSettings.pureEval = false;
             auto state = getEvalState();
-            auto e =
-                state->parseExprFromFile(
-                    resolveExprPath(
-                        lookupFileArg(*state, *file)));
+            auto e = state->parseExprFromFile(resolveExprPath(lookupFileArg(*state, *file)));
 
             Value root;
             state->eval(e, root);
@@ -285,7 +276,7 @@ void SourceExprCommand::completeInstallable(AddCompletions & completions, std::s
             }
 
             auto [v, pos] = findAlongAttrPath(*state, prefix_, *autoArgs, root);
-            Value &v1(*v);
+            Value & v1(*v);
             state->forceValue(v1, pos);
             Value v2;
             state->autoCallFunction(*autoArgs, v1, v2);
@@ -310,7 +301,7 @@ void SourceExprCommand::completeInstallable(AddCompletions & completions, std::s
                 getDefaultFlakeAttrPaths(),
                 prefix);
         }
-    } catch (EvalError&) {
+    } catch (EvalError &) {
         // Don't want eval errors to mess-up with the completion engine, so let's just swallow them
     }
 }
@@ -334,22 +325,23 @@ void completeFlakeRefWithFragment(
 
             auto fragment = prefix.substr(hash + 1);
             std::string prefixRoot = "";
-            if (fragment.starts_with(".")){
+            if (fragment.starts_with(".")) {
                 fragment = fragment.substr(1);
                 prefixRoot = ".";
             }
             auto flakeRefS = std::string(prefix.substr(0, hash));
 
             // TODO: ideally this would use the command base directory instead of assuming ".".
-            auto flakeRef = parseFlakeRef(fetchSettings, expandTilde(flakeRefS), std::filesystem::current_path().string());
+            auto flakeRef =
+                parseFlakeRef(fetchSettings, expandTilde(flakeRefS), std::filesystem::current_path().string());
 
-            auto evalCache = openEvalCache(*evalState,
-                std::make_shared<flake::LockedFlake>(lockFlake(
-                    flakeSettings, *evalState, flakeRef, lockFlags)));
+            auto evalCache = openEvalCache(
+                *evalState,
+                std::make_shared<flake::LockedFlake>(lockFlake(flakeSettings, *evalState, flakeRef, lockFlags)));
 
             auto root = evalCache->getRoot();
 
-            if (prefixRoot == "."){
+            if (prefixRoot == ".") {
                 attrPathPrefixes.clear();
             }
             /* Complete 'fragment' relative to all the
@@ -369,7 +361,8 @@ void completeFlakeRefWithFragment(
                 }
 
                 auto attr = root->findAlongAttrPath(attrPath);
-                if (!attr) continue;
+                if (!attr)
+                    continue;
 
                 for (auto & attr2 : (*attr)->getAttrs()) {
                     if (hasPrefix(evalState->symbols[attr2], lastAttr)) {
@@ -377,7 +370,9 @@ void completeFlakeRefWithFragment(
                         /* Strip the attrpath prefix. */
                         attrPath2.erase(attrPath2.begin(), attrPath2.begin() + attrPathPrefix.size());
                         // FIXME: handle names with dots
-                        completions.add(flakeRefS + "#" + prefixRoot + concatStringsSep(".", evalState->symbols.resolve(attrPath2)));
+                        completions.add(
+                            flakeRefS + "#" + prefixRoot
+                            + concatStringsSep(".", evalState->symbols.resolve(attrPath2)));
                     }
                 }
             }
@@ -387,7 +382,8 @@ void completeFlakeRefWithFragment(
             if (fragment.empty()) {
                 for (auto & attrPath : defaultFlakeAttrPaths) {
                     auto attr = root->findAlongAttrPath(parseAttrPath(*evalState, attrPath));
-                    if (!attr) continue;
+                    if (!attr)
+                        continue;
                     completions.add(flakeRefS + "#" + prefixRoot);
                 }
             }
@@ -427,14 +423,12 @@ DerivedPathWithInfo Installable::toDerivedPath()
 {
     auto buildables = toDerivedPaths();
     if (buildables.size() != 1)
-        throw Error("installable '%s' evaluates to %d derivations, where only one is expected", what(), buildables.size());
+        throw Error(
+            "installable '%s' evaluates to %d derivations, where only one is expected", what(), buildables.size());
     return std::move(buildables[0]);
 }
 
-static StorePath getDeriver(
-    ref<Store> store,
-    const Installable & i,
-    const StorePath & drvPath)
+static StorePath getDeriver(ref<Store> store, const Installable & i, const StorePath & drvPath)
 {
     auto derivers = store->queryValidDerivers(drvPath);
     if (derivers.empty())
@@ -443,35 +437,35 @@ static StorePath getDeriver(
     return *derivers.begin();
 }
 
-ref<eval_cache::EvalCache> openEvalCache(
-    EvalState & state,
-    std::shared_ptr<flake::LockedFlake> lockedFlake)
+ref<eval_cache::EvalCache> openEvalCache(EvalState & state, std::shared_ptr<flake::LockedFlake> lockedFlake)
 {
     auto fingerprint = evalSettings.useEvalCache && evalSettings.pureEval
-        ? lockedFlake->getFingerprint(state.store, state.fetchSettings)
-        : std::nullopt;
-    auto rootLoader = [&state, lockedFlake]()
-        {
-            /* For testing whether the evaluation cache is
-               complete. */
-            if (getEnv("NIX_ALLOW_EVAL").value_or("1") == "0")
-                throw Error("not everything is cached, but evaluation is not allowed");
+                           ? lockedFlake->getFingerprint(state.store, state.fetchSettings)
+                           : std::nullopt;
+    auto rootLoader = [&state, lockedFlake]() {
+        /* For testing whether the evaluation cache is
+           complete. */
+        if (getEnv("NIX_ALLOW_EVAL").value_or("1") == "0")
+            throw Error("not everything is cached, but evaluation is not allowed");
 
-            auto vFlake = state.allocValue();
-            flake::callFlake(state, *lockedFlake, *vFlake);
+        auto vFlake = state.allocValue();
+        flake::callFlake(state, *lockedFlake, *vFlake);
 
-            state.forceAttrs(*vFlake, noPos, "while parsing cached flake data");
+        state.forceAttrs(*vFlake, noPos, "while parsing cached flake data");
 
-            auto aOutputs = vFlake->attrs()->get(state.symbols.create("outputs"));
-            assert(aOutputs);
+        auto aOutputs = vFlake->attrs()->get(state.symbols.create("outputs"));
+        assert(aOutputs);
 
-            return aOutputs->value;
-        };
+        return aOutputs->value;
+    };
 
     if (fingerprint) {
         auto search = state.evalCaches.find(fingerprint.value());
         if (search == state.evalCaches.end()) {
-            search = state.evalCaches.emplace(fingerprint.value(), make_ref<nix::eval_cache::EvalCache>(fingerprint, state, rootLoader)).first;
+            search =
+                state.evalCaches
+                    .emplace(fingerprint.value(), make_ref<nix::eval_cache::EvalCache>(fingerprint, state, rootLoader))
+                    .first;
         }
         return search->second;
     } else {
@@ -479,8 +473,7 @@ ref<eval_cache::EvalCache> openEvalCache(
     }
 }
 
-Installables SourceExprCommand::parseInstallables(
-    ref<Store> store, std::vector<std::string> ss)
+Installables SourceExprCommand::parseInstallables(ref<Store> store, std::vector<std::string> ss)
 {
     Installables result;
 
@@ -501,12 +494,10 @@ Installables SourceExprCommand::parseInstallables(
         if (file == "-") {
             auto e = state->parseStdin();
             state->eval(e, *vFile);
-        }
-        else if (file) {
+        } else if (file) {
             auto dir = absPath(getCommandBaseDir());
             state->evalFile(lookupFileArg(*state, *file, &dir), *vFile);
-        }
-        else {
+        } else {
             Path dir = absPath(getCommandBaseDir());
             auto e = state->parseExprFromString(*expr, state->rootPath(dir));
             state->eval(e, *vFile);
@@ -515,9 +506,8 @@ Installables SourceExprCommand::parseInstallables(
         for (auto & s : ss) {
             auto [prefix, extendedOutputsSpec] = ExtendedOutputsSpec::parse(s);
             result.push_back(
-                make_ref<InstallableAttrPath>(
-                    InstallableAttrPath::parse(
-                        state, *this, vFile, std::move(prefix), std::move(extendedOutputsSpec))));
+                make_ref<InstallableAttrPath>(InstallableAttrPath::parse(
+                    state, *this, vFile, std::move(prefix), std::move(extendedOutputsSpec))));
         }
 
     } else {
@@ -532,8 +522,9 @@ Installables SourceExprCommand::parseInstallables(
 
             if (prefix.find('/') != std::string::npos) {
                 try {
-                    result.push_back(make_ref<InstallableDerivedPath>(
-                        InstallableDerivedPath::parse(store, prefix, extendedOutputsSpec.raw)));
+                    result.push_back(
+                        make_ref<InstallableDerivedPath>(
+                            InstallableDerivedPath::parse(store, prefix, extendedOutputsSpec.raw)));
                     continue;
                 } catch (BadStorePath &) {
                 } catch (...) {
@@ -543,9 +534,10 @@ Installables SourceExprCommand::parseInstallables(
             }
 
             try {
-                auto [flakeRef, fragment] = parseFlakeRefWithFragment(
-                    fetchSettings, std::string { prefix }, absPath(getCommandBaseDir()));
-                result.push_back(make_ref<InstallableFlake>(
+                auto [flakeRef, fragment] =
+                    parseFlakeRefWithFragment(fetchSettings, std::string{prefix}, absPath(getCommandBaseDir()));
+                result.push_back(
+                    make_ref<InstallableFlake>(
                         this,
                         getEvalState(),
                         std::move(flakeRef),
@@ -566,8 +558,7 @@ Installables SourceExprCommand::parseInstallables(
     return result;
 }
 
-ref<Installable> SourceExprCommand::parseInstallable(
-    ref<Store> store, const std::string & installable)
+ref<Installable> SourceExprCommand::parseInstallable(ref<Store> store, const std::string & installable)
 {
     auto installables = parseInstallables(store, {installable});
     assert(installables.size() == 1);
@@ -578,20 +569,18 @@ static SingleBuiltPath getBuiltPath(ref<Store> evalStore, ref<Store> store, cons
 {
     return std::visit(
         overloaded{
-            [&](const SingleDerivedPath::Opaque & bo) -> SingleBuiltPath {
-                return SingleBuiltPath::Opaque { bo.path };
-            },
+            [&](const SingleDerivedPath::Opaque & bo) -> SingleBuiltPath { return SingleBuiltPath::Opaque{bo.path}; },
             [&](const SingleDerivedPath::Built & bfd) -> SingleBuiltPath {
                 auto drvPath = getBuiltPath(evalStore, store, *bfd.drvPath);
                 // Resolving this instead of `bfd` will yield the same result, but avoid duplicative work.
-                SingleDerivedPath::Built truncatedBfd {
+                SingleDerivedPath::Built truncatedBfd{
                     .drvPath = makeConstantStorePathRef(drvPath.outPath()),
                     .output = bfd.output,
                 };
                 auto outputPath = resolveDerivedPath(*store, truncatedBfd, &*evalStore);
-                return SingleBuiltPath::Built {
+                return SingleBuiltPath::Built{
                     .drvPath = make_ref<SingleBuiltPath>(std::move(drvPath)),
-                    .output = { bfd.output, outputPath },
+                    .output = {bfd.output, outputPath},
                 };
             },
         },
@@ -599,11 +588,7 @@ static SingleBuiltPath getBuiltPath(ref<Store> evalStore, ref<Store> store, cons
 }
 
 std::vector<BuiltPathWithResult> Installable::build(
-    ref<Store> evalStore,
-    ref<Store> store,
-    Realise mode,
-    const Installables & installables,
-    BuildMode bMode)
+    ref<Store> evalStore, ref<Store> store, Realise mode, const Installables & installables, BuildMode bMode)
 {
     std::vector<BuiltPathWithResult> res;
     for (auto & [_, builtPathWithResult] : build2(evalStore, store, mode, installables, bMode))
@@ -611,9 +596,7 @@ std::vector<BuiltPathWithResult> Installable::build(
     return res;
 }
 
-static void throwBuildErrors(
-    std::vector<KeyedBuildResult> & buildResults,
-    const Store & store)
+static void throwBuildErrors(std::vector<KeyedBuildResult> & buildResults, const Store & store)
 {
     std::vector<KeyedBuildResult> failed;
     for (auto & buildResult : buildResults) {
@@ -630,10 +613,11 @@ static void throwBuildErrors(
             StringSet failedPaths;
             for (; failedResult != failed.end(); failedResult++) {
                 if (!failedResult->errorMsg.empty()) {
-                    logError(ErrorInfo{
-                        .level = lvlError,
-                        .msg = failedResult->errorMsg,
-                    });
+                    logError(
+                        ErrorInfo{
+                            .level = lvlError,
+                            .msg = failedResult->errorMsg,
+                        });
                 }
                 failedPaths.insert(failedResult->path.to_string(store));
             }
@@ -643,11 +627,7 @@ static void throwBuildErrors(
 }
 
 std::vector<std::pair<ref<Installable>, BuiltPathWithResult>> Installable::build2(
-    ref<Store> evalStore,
-    ref<Store> store,
-    Realise mode,
-    const Installables & installables,
-    BuildMode bMode)
+    ref<Store> evalStore, ref<Store> store, Realise mode, const Installables & installables, BuildMode bMode)
 {
     if (mode == Realise::Nothing)
         settings.readOnlyMode = true;
@@ -678,22 +658,25 @@ std::vector<std::pair<ref<Installable>, BuiltPathWithResult>> Installable::build
 
         for (auto & path : pathsToBuild) {
             for (auto & aux : backmap[path]) {
-                std::visit(overloaded {
-                    [&](const DerivedPath::Built & bfd) {
-                        auto outputs = resolveDerivedPath(*store, bfd, &*evalStore);
-                        res.push_back({aux.installable, {
-                            .path = BuiltPath::Built {
-                                .drvPath = make_ref<SingleBuiltPath>(getBuiltPath(evalStore, store, *bfd.drvPath)),
-                                .outputs = outputs,
-                             },
-                            .info = aux.info}});
+                std::visit(
+                    overloaded{
+                        [&](const DerivedPath::Built & bfd) {
+                            auto outputs = resolveDerivedPath(*store, bfd, &*evalStore);
+                            res.push_back(
+                                {aux.installable,
+                                 {.path =
+                                      BuiltPath::Built{
+                                          .drvPath =
+                                              make_ref<SingleBuiltPath>(getBuiltPath(evalStore, store, *bfd.drvPath)),
+                                          .outputs = outputs,
+                                      },
+                                  .info = aux.info}});
+                        },
+                        [&](const DerivedPath::Opaque & bo) {
+                            res.push_back({aux.installable, {.path = BuiltPath::Opaque{bo.path}, .info = aux.info}});
+                        },
                     },
-                    [&](const DerivedPath::Opaque & bo) {
-                        res.push_back({aux.installable, {
-                            .path = BuiltPath::Opaque { bo.path },
-                            .info = aux.info}});
-                    },
-                }, path.raw());
+                    path.raw());
             }
         }
 
@@ -707,26 +690,30 @@ std::vector<std::pair<ref<Installable>, BuiltPathWithResult>> Installable::build
         throwBuildErrors(buildResults, *store);
         for (auto & buildResult : buildResults) {
             for (auto & aux : backmap[buildResult.path]) {
-                std::visit(overloaded {
-                    [&](const DerivedPath::Built & bfd) {
-                        std::map<std::string, StorePath> outputs;
-                        for (auto & [outputName, realisation] : buildResult.builtOutputs)
-                            outputs.emplace(outputName, realisation.outPath);
-                        res.push_back({aux.installable, {
-                            .path = BuiltPath::Built {
-                                .drvPath = make_ref<SingleBuiltPath>(getBuiltPath(evalStore, store, *bfd.drvPath)),
-                                .outputs = outputs,
-                            },
-                            .info = aux.info,
-                            .result = buildResult}});
+                std::visit(
+                    overloaded{
+                        [&](const DerivedPath::Built & bfd) {
+                            std::map<std::string, StorePath> outputs;
+                            for (auto & [outputName, realisation] : buildResult.builtOutputs)
+                                outputs.emplace(outputName, realisation.outPath);
+                            res.push_back(
+                                {aux.installable,
+                                 {.path =
+                                      BuiltPath::Built{
+                                          .drvPath =
+                                              make_ref<SingleBuiltPath>(getBuiltPath(evalStore, store, *bfd.drvPath)),
+                                          .outputs = outputs,
+                                      },
+                                  .info = aux.info,
+                                  .result = buildResult}});
+                        },
+                        [&](const DerivedPath::Opaque & bo) {
+                            res.push_back(
+                                {aux.installable,
+                                 {.path = BuiltPath::Opaque{bo.path}, .info = aux.info, .result = buildResult}});
+                        },
                     },
-                    [&](const DerivedPath::Opaque & bo) {
-                        res.push_back({aux.installable, {
-                            .path = BuiltPath::Opaque { bo.path },
-                            .info = aux.info,
-                            .result = buildResult}});
-                    },
-                }, buildResult.path.raw());
+                    buildResult.path.raw());
             }
         }
 
@@ -741,11 +728,7 @@ std::vector<std::pair<ref<Installable>, BuiltPathWithResult>> Installable::build
 }
 
 BuiltPaths Installable::toBuiltPaths(
-    ref<Store> evalStore,
-    ref<Store> store,
-    Realise mode,
-    OperateOn operateOn,
-    const Installables & installables)
+    ref<Store> evalStore, ref<Store> store, Realise mode, OperateOn operateOn, const Installables & installables)
 {
     if (operateOn == OperateOn::Output) {
         BuiltPaths res;
@@ -764,10 +747,7 @@ BuiltPaths Installable::toBuiltPaths(
 }
 
 StorePathSet Installable::toStorePathSet(
-    ref<Store> evalStore,
-    ref<Store> store,
-    Realise mode, OperateOn operateOn,
-    const Installables & installables)
+    ref<Store> evalStore, ref<Store> store, Realise mode, OperateOn operateOn, const Installables & installables)
 {
     StorePathSet outPaths;
     for (auto & path : toBuiltPaths(evalStore, store, mode, operateOn, installables)) {
@@ -778,10 +758,7 @@ StorePathSet Installable::toStorePathSet(
 }
 
 StorePaths Installable::toStorePaths(
-    ref<Store> evalStore,
-    ref<Store> store,
-    Realise mode, OperateOn operateOn,
-    const Installables & installables)
+    ref<Store> evalStore, ref<Store> store, Realise mode, OperateOn operateOn, const Installables & installables)
 {
     StorePaths outPaths;
     for (auto & path : toBuiltPaths(evalStore, store, mode, operateOn, installables)) {
@@ -792,10 +769,7 @@ StorePaths Installable::toStorePaths(
 }
 
 StorePath Installable::toStorePath(
-    ref<Store> evalStore,
-    ref<Store> store,
-    Realise mode, OperateOn operateOn,
-    ref<Installable> installable)
+    ref<Store> evalStore, ref<Store> store, Realise mode, OperateOn operateOn, ref<Installable> installable)
 {
     auto paths = toStorePathSet(evalStore, store, mode, operateOn, {installable});
 
@@ -805,28 +779,23 @@ StorePath Installable::toStorePath(
     return *paths.begin();
 }
 
-StorePathSet Installable::toDerivations(
-    ref<Store> store,
-    const Installables & installables,
-    bool useDeriver)
+StorePathSet Installable::toDerivations(ref<Store> store, const Installables & installables, bool useDeriver)
 {
     StorePathSet drvPaths;
 
     for (const auto & i : installables)
         for (const auto & b : i->toDerivedPaths())
-            std::visit(overloaded {
-                [&](const DerivedPath::Opaque & bo) {
-                    drvPaths.insert(
-                        bo.path.isDerivation()
-                            ? bo.path
-                        : useDeriver
-                            ? getDeriver(store, *i, bo.path)
-                        : throw Error("argument '%s' did not evaluate to a derivation", i->what()));
+            std::visit(
+                overloaded{
+                    [&](const DerivedPath::Opaque & bo) {
+                        drvPaths.insert(
+                            bo.path.isDerivation() ? bo.path
+                            : useDeriver           ? getDeriver(store, *i, bo.path)
+                                         : throw Error("argument '%s' did not evaluate to a derivation", i->what()));
+                    },
+                    [&](const DerivedPath::Built & bfd) { drvPaths.insert(resolveDerivedPath(*store, *bfd.drvPath)); },
                 },
-                [&](const DerivedPath::Built & bfd) {
-                    drvPaths.insert(resolveDerivedPath(*store, *bfd.drvPath));
-                },
-            }, b.path.raw());
+                b.path.raw());
 
     return drvPaths;
 }
@@ -861,10 +830,7 @@ std::vector<FlakeRef> RawInstallablesCommand::getFlakeRefsForCompletion()
     std::vector<FlakeRef> res;
     res.reserve(rawInstallables.size());
     for (const auto & i : rawInstallables)
-        res.push_back(parseFlakeRefWithFragment(
-            fetchSettings,
-            expandTilde(i),
-            absPath(getCommandBaseDir())).first);
+        res.push_back(parseFlakeRefWithFragment(fetchSettings, expandTilde(i), absPath(getCommandBaseDir())).first);
     return res;
 }
 
@@ -883,12 +849,7 @@ void RawInstallablesCommand::run(ref<Store> store)
 
 std::vector<FlakeRef> InstallableCommand::getFlakeRefsForCompletion()
 {
-    return {
-        parseFlakeRefWithFragment(
-            fetchSettings,
-            expandTilde(_installable),
-            absPath(getCommandBaseDir())).first
-    };
+    return {parseFlakeRefWithFragment(fetchSettings, expandTilde(_installable), absPath(getCommandBaseDir())).first};
 }
 
 void InstallablesCommand::run(ref<Store> store, std::vector<std::string> && rawInstallables)
@@ -928,4 +889,4 @@ BuiltPaths toBuiltPaths(const std::vector<BuiltPathWithResult> & builtPathsWithR
     return res;
 }
 
-}
+} // namespace nix

src/libcmd/markdown.cc

@@ -18,25 +18,24 @@ static std::string doRenderMarkdownToTerminal(std::string_view markdown)
 {
     int windowWidth = getWindowSize().second;
 
-#if HAVE_LOWDOWN_1_4
-    struct lowdown_opts_term opts_term {
+#  if HAVE_LOWDOWN_1_4
+    struct lowdown_opts_term opts_term{
         .cols = (size_t) std::max(windowWidth - 5, 60),
         .hmargin = 0,
         .vmargin = 0,
     };
-#endif
-    struct lowdown_opts opts
-    {
+#  endif
+    struct lowdown_opts opts{
         .type = LOWDOWN_TERM,
-#if HAVE_LOWDOWN_1_4
+#  if HAVE_LOWDOWN_1_4
         .term = opts_term,
-#endif
+#  endif
         .maxdepth = 20,
-#if !HAVE_LOWDOWN_1_4
+#  if !HAVE_LOWDOWN_1_4
         .cols = (size_t) std::max(windowWidth - 5, 60),
         .hmargin = 0,
         .vmargin = 0,
-#endif
+#  endif
         .feat = LOWDOWN_COMMONMARK | LOWDOWN_FENCED | LOWDOWN_DEFLIST | LOWDOWN_TABLES,
         .oflags = LOWDOWN_TERM_NOLINK,
     };

src/libcmd/misc-store-flags.cc

@@ -1,7 +1,6 @@
 #include "nix/cmd/misc-store-flags.hh"
 
-namespace nix::flag
-{
+namespace nix::flag {
 
 static void hashFormatCompleter(AddCompletions & completions, size_t index, std::string_view prefix)
 {
@@ -15,27 +14,23 @@ static void hashFormatCompleter(AddCompletions & completions, size_t index, std:
 Args::Flag hashFormatWithDefault(std::string && longName, HashFormat * hf)
 {
     assert(*hf == nix::HashFormat::SRI);
-    return Args::Flag {
-            .longName = std::move(longName),
-            .description = "Hash format (`base16`, `nix32`, `base64`, `sri`). Default: `sri`.",
-            .labels = {"hash-format"},
-            .handler = {[hf](std::string s) {
-                *hf = parseHashFormat(s);
-            }},
-            .completer = hashFormatCompleter,
+    return Args::Flag{
+        .longName = std::move(longName),
+        .description = "Hash format (`base16`, `nix32`, `base64`, `sri`). Default: `sri`.",
+        .labels = {"hash-format"},
+        .handler = {[hf](std::string s) { *hf = parseHashFormat(s); }},
+        .completer = hashFormatCompleter,
     };
 }
 
 Args::Flag hashFormatOpt(std::string && longName, std::optional<HashFormat> * ohf)
 {
-    return Args::Flag {
-            .longName = std::move(longName),
-            .description = "Hash format (`base16`, `nix32`, `base64`, `sri`).",
-            .labels = {"hash-format"},
-            .handler = {[ohf](std::string s) {
-                *ohf = std::optional<HashFormat>{parseHashFormat(s)};
-            }},
-            .completer = hashFormatCompleter,
+    return Args::Flag{
+        .longName = std::move(longName),
+        .description = "Hash format (`base16`, `nix32`, `base64`, `sri`).",
+        .labels = {"hash-format"},
+        .handler = {[ohf](std::string s) { *ohf = std::optional<HashFormat>{parseHashFormat(s)}; }},
+        .completer = hashFormatCompleter,
     };
 }
 
@@ -48,34 +43,31 @@ static void hashAlgoCompleter(AddCompletions & completions, size_t index, std::s
 
 Args::Flag hashAlgo(std::string && longName, HashAlgorithm * ha)
 {
-    return Args::Flag {
-            .longName = std::move(longName),
-            .description = "Hash algorithm (`blake3`, `md5`, `sha1`, `sha256`, or `sha512`).",
-            .labels = {"hash-algo"},
-            .handler = {[ha](std::string s) {
-                *ha = parseHashAlgo(s);
-            }},
-            .completer = hashAlgoCompleter,
+    return Args::Flag{
+        .longName = std::move(longName),
+        .description = "Hash algorithm (`blake3`, `md5`, `sha1`, `sha256`, or `sha512`).",
+        .labels = {"hash-algo"},
+        .handler = {[ha](std::string s) { *ha = parseHashAlgo(s); }},
+        .completer = hashAlgoCompleter,
     };
 }
 
 Args::Flag hashAlgoOpt(std::string && longName, std::optional<HashAlgorithm> * oha)
 {
-    return Args::Flag {
-            .longName = std::move(longName),
-            .description = "Hash algorithm (`blake3`, `md5`, `sha1`, `sha256`, or `sha512`). Can be omitted for SRI hashes.",
-            .labels = {"hash-algo"},
-            .handler = {[oha](std::string s) {
-                *oha = std::optional<HashAlgorithm>{parseHashAlgo(s)};
-            }},
-            .completer = hashAlgoCompleter,
+    return Args::Flag{
+        .longName = std::move(longName),
+        .description =
+            "Hash algorithm (`blake3`, `md5`, `sha1`, `sha256`, or `sha512`). Can be omitted for SRI hashes.",
+        .labels = {"hash-algo"},
+        .handler = {[oha](std::string s) { *oha = std::optional<HashAlgorithm>{parseHashAlgo(s)}; }},
+        .completer = hashAlgoCompleter,
     };
 }
 
 Args::Flag fileIngestionMethod(FileIngestionMethod * method)
 {
-    return Args::Flag {
-        .longName  = "mode",
+    return Args::Flag{
+        .longName = "mode",
         // FIXME indentation carefully made for context, this is messed up.
         .description = R"(
     How to compute the hash of the input.
@@ -92,16 +84,14 @@ Args::Flag fileIngestionMethod(FileIngestionMethod * method)
       it to the hash function.
         )",
         .labels = {"file-ingestion-method"},
-        .handler = {[method](std::string s) {
-            *method = parseFileIngestionMethod(s);
-        }},
+        .handler = {[method](std::string s) { *method = parseFileIngestionMethod(s); }},
     };
 }
 
 Args::Flag contentAddressMethod(ContentAddressMethod * method)
 {
-    return Args::Flag {
-        .longName  = "mode",
+    return Args::Flag{
+        .longName = "mode",
         // FIXME indentation carefully made for context, this is messed up.
         .description = R"(
     How to compute the content-address of the store object.
@@ -126,10 +116,8 @@ Args::Flag contentAddressMethod(ContentAddressMethod * method)
       for regular usage prefer `nar` and `flat`.
         )",
         .labels = {"content-address-method"},
-        .handler = {[method](std::string s) {
-            *method = ContentAddressMethod::parse(s);
-        }},
+        .handler = {[method](std::string s) { *method = ContentAddressMethod::parse(s); }},
     };
 }
 
-}
+} // namespace nix::flag

src/libcmd/network-proxy.cc

@@ -47,4 +47,4 @@ bool haveNetworkProxyConnection()
     return false;
 }
 
-}
+} // namespace nix

src/libcmd/package.nix

@@ -53,7 +53,8 @@ mkMesonLibrary (finalAttrs: {
 
   buildInputs = [
     ({ inherit editline readline; }.${readlineFlavor})
-  ] ++ lib.optional enableMarkdown lowdown;
+  ]
+  ++ lib.optional enableMarkdown lowdown;
 
   propagatedBuildInputs = [
     nix-util

src/libcmd/repl-interacter.cc

@@ -3,8 +3,8 @@
 #include <cstdio>
 
 #if USE_READLINE
-#include <readline/history.h>
-#include <readline/readline.h>
+#  include <readline/history.h>
+#  include <readline/readline.h>
 #else
 // editline < 1.15.2 don't wrap their API for C++ usage
 // (added in https://github.com/troglobit/editline/commit/91398ceb3427b730995357e9d120539fb9bb7461).
@@ -12,7 +12,7 @@
 // For compatibility with these versions, we wrap the API here
 // (wrapping multiple times on newer versions is no problem).
 extern "C" {
-#include <editline.h>
+#  include <editline.h>
 }
 #endif
 
@@ -33,7 +33,7 @@ void sigintHandler(int signo)
 {
     g_signal_received = signo;
 }
-};
+}; // namespace
 
 static detail::ReplCompleterMixin * curRepl; // ugly
 
@@ -183,8 +183,7 @@ bool ReadlineLikeInteracter::getLine(std::string & input, ReplPromptType promptT
     // editline doesn't echo the input to the output when non-interactive, unlike readline
     // this results in a different behavior when running tests. The echoing is
     // quite useful for reading the test output, so we add it here.
-    if (auto e = getEnv("_NIX_TEST_REPL_ECHO"); s && e && *e == "1")
-    {
+    if (auto e = getEnv("_NIX_TEST_REPL_ECHO"); s && e && *e == "1") {
 #if !USE_READLINE
         // This is probably not right for multi-line input, but we don't use that
         // in the characterisation tests, so it's fine.
@@ -205,4 +204,4 @@ ReadlineLikeInteracter::~ReadlineLikeInteracter()
     write_history(historyFile.c_str());
 }
 
-};
+}; // namespace nix

src/libcmd/repl.cc

@@ -54,10 +54,7 @@ enum class ProcessLineResult {
     PromptAgain,
 };
 
-struct NixRepl
-    : AbstractNixRepl
-    , detail::ReplCompleterMixin
-    , gc
+struct NixRepl : AbstractNixRepl, detail::ReplCompleterMixin, gc
 {
     size_t debugTraceIndex;
 
@@ -79,8 +76,12 @@ struct NixRepl
 
     std::unique_ptr<ReplInteracter> interacter;
 
-    NixRepl(const LookupPath & lookupPath, nix::ref<Store> store,ref<EvalState> state,
-            std::function<AnnotatedValues()> getValues, RunNix * runNix);
+    NixRepl(
+        const LookupPath & lookupPath,
+        nix::ref<Store> store,
+        ref<EvalState> state,
+        std::function<AnnotatedValues()> getValues,
+        RunNix * runNix);
     virtual ~NixRepl() = default;
 
     ReplExitStatus mainLoop() override;
@@ -101,20 +102,22 @@ struct NixRepl
     void evalString(std::string s, Value & v);
     void loadDebugTraceEnv(DebugTrace & dt);
 
-    void printValue(std::ostream & str,
-                              Value & v,
-                              unsigned int maxDepth = std::numeric_limits<unsigned int>::max())
+    void printValue(std::ostream & str, Value & v, unsigned int maxDepth = std::numeric_limits<unsigned int>::max())
     {
         // Hide the progress bar during printing because it might interfere
         auto suspension = logger->suspend();
-        ::nix::printValue(*state, str, v, PrintOptions {
-            .ansiColors = true,
-            .force = true,
-            .derivationPaths = true,
-            .maxDepth = maxDepth,
-            .prettyIndent = 2,
-            .errors = ErrorPrintBehavior::ThrowTopLevel,
-        });
+        ::nix::printValue(
+            *state,
+            str,
+            v,
+            PrintOptions{
+                .ansiColors = true,
+                .force = true,
+                .derivationPaths = true,
+                .maxDepth = maxDepth,
+                .prettyIndent = 2,
+                .errors = ErrorPrintBehavior::ThrowTopLevel,
+            });
     }
 };
 
@@ -122,13 +125,17 @@ std::string removeWhitespace(std::string s)
 {
     s = chomp(s);
     size_t n = s.find_first_not_of(" \n\r\t");
-    if (n != std::string::npos) s = std::string(s, n);
+    if (n != std::string::npos)
+        s = std::string(s, n);
     return s;
 }
 
-
-NixRepl::NixRepl(const LookupPath & lookupPath, nix::ref<Store> store, ref<EvalState> state,
-            std::function<NixRepl::AnnotatedValues()> getValues, RunNix * runNix)
+NixRepl::NixRepl(
+    const LookupPath & lookupPath,
+    nix::ref<Store> store,
+    ref<EvalState> state,
+    std::function<NixRepl::AnnotatedValues()> getValues,
+    RunNix * runNix)
     : AbstractNixRepl(state)
     , debugTraceIndex(0)
     , getValues(getValues)
@@ -184,7 +191,8 @@ ReplExitStatus NixRepl::mainLoop()
             auto suspension = logger->suspend();
             // When continuing input from previous lines, don't print a prompt, just align to the same
             // number of chars as the prompt.
-            if (!interacter->getLine(input, input.empty() ? ReplPromptType::ReplPrompt : ReplPromptType::ContinuationPrompt)) {
+            if (!interacter->getLine(
+                    input, input.empty() ? ReplPromptType::ReplPrompt : ReplPromptType::ContinuationPrompt)) {
                 // Ctrl-D should exit the debugger.
                 state->debugStop = false;
                 logger->cout("");
@@ -196,14 +204,14 @@ ReplExitStatus NixRepl::mainLoop()
         }
         try {
             switch (processLine(input)) {
-                case ProcessLineResult::Quit:
-                    return ReplExitStatus::QuitAll;
-                case ProcessLineResult::Continue:
-                    return ReplExitStatus::Continue;
-                case ProcessLineResult::PromptAgain:
-                    break;
-                default:
-                    unreachable();
+            case ProcessLineResult::Quit:
+                return ReplExitStatus::QuitAll;
+            case ProcessLineResult::Continue:
+                return ReplExitStatus::Continue;
+            case ProcessLineResult::PromptAgain:
+                break;
+            default:
+                unreachable();
             }
         } catch (ParseError & e) {
             if (e.msg().find("unexpected end of file") != std::string::npos) {
@@ -211,7 +219,7 @@ ReplExitStatus NixRepl::mainLoop()
                 // input without clearing the input so far.
                 continue;
             } else {
-              printMsg(lvlError, e.msg());
+                printMsg(lvlError, e.msg());
             }
         } catch (EvalError & e) {
             printMsg(lvlError, e.msg());
@@ -260,7 +268,8 @@ StringSet NixRepl::completePrefix(const std::string & prefix)
         /* This is a variable name; look it up in the current scope. */
         StringSet::iterator i = varNames.lower_bound(cur);
         while (i != varNames.end()) {
-            if (i->substr(0, cur.size()) != cur) break;
+            if (i->substr(0, cur.size()) != cur)
+                break;
             completions.insert(prev + *i);
             i++;
         }
@@ -279,11 +288,15 @@ StringSet NixRepl::completePrefix(const std::string & prefix)
             Expr * e = parseString(expr);
             Value v;
             e->eval(*state, *env, v);
-            state->forceAttrs(v, noPos, "while evaluating an attrset for the purpose of completion (this error should not be displayed; file an issue?)");
+            state->forceAttrs(
+                v,
+                noPos,
+                "while evaluating an attrset for the purpose of completion (this error should not be displayed; file an issue?)");
 
             for (auto & i : *v.attrs()) {
                 std::string_view name = state->symbols[i.name];
-                if (name.substr(0, cur2.size()) != cur2) continue;
+                if (name.substr(0, cur2.size()) != cur2)
+                    continue;
                 completions.insert(concatStrings(prev, expr, ".", name));
             }
 
@@ -301,24 +314,23 @@ StringSet NixRepl::completePrefix(const std::string & prefix)
     return completions;
 }
 
-
 // FIXME: DRY and match or use the parser
 static bool isVarName(std::string_view s)
 {
-    if (s.size() == 0) return false;
+    if (s.size() == 0)
+        return false;
     char c = s[0];
-    if ((c >= '0' && c <= '9') || c == '-' || c == '\'') return false;
+    if ((c >= '0' && c <= '9') || c == '-' || c == '\'')
+        return false;
     for (auto & i : s)
-        if (!((i >= 'a' && i <= 'z') ||
-              (i >= 'A' && i <= 'Z') ||
-              (i >= '0' && i <= '9') ||
-              i == '_' || i == '-' || i == '\''))
+        if (!((i >= 'a' && i <= 'z') || (i >= 'A' && i <= 'Z') || (i >= '0' && i <= '9') || i == '_' || i == '-'
+              || i == '\''))
             return false;
     return true;
 }
 
-
-StorePath NixRepl::getDerivationPath(Value & v) {
+StorePath NixRepl::getDerivationPath(Value & v)
+{
     auto packageInfo = getDerivation(*state, v, false);
     if (!packageInfo)
         throw Error("expression does not evaluate to a derivation, so I can't build it");
@@ -357,52 +369,49 @@ ProcessLineResult NixRepl::processLine(std::string line)
     if (line[0] == ':') {
         size_t p = line.find_first_of(" \n\r\t");
         command = line.substr(0, p);
-        if (p != std::string::npos) arg = removeWhitespace(line.substr(p));
+        if (p != std::string::npos)
+            arg = removeWhitespace(line.substr(p));
     } else {
         arg = line;
     }
 
     if (command == ":?" || command == ":help") {
         // FIXME: convert to Markdown, include in the 'nix repl' manpage.
-        std::cout
-             << "The following commands are available:\n"
-             << "\n"
-             << "  <expr>                       Evaluate and print expression\n"
-             << "  <x> = <expr>                 Bind expression to variable\n"
-             << "  :a, :add <expr>              Add attributes from resulting set to scope\n"
-             << "  :b <expr>                    Build a derivation\n"
-             << "  :bl <expr>                   Build a derivation, creating GC roots in the\n"
-             << "                               working directory\n"
-             << "  :e, :edit <expr>             Open package or function in $EDITOR\n"
-             << "  :i <expr>                    Build derivation, then install result into\n"
-             << "                               current profile\n"
-             << "  :l, :load <path>             Load Nix expression and add it to scope\n"
-             << "  :lf, :load-flake <ref>       Load Nix flake and add it to scope\n"
-             << "  :p, :print <expr>            Evaluate and print expression recursively\n"
-             << "                               Strings are printed directly, without escaping.\n"
-             << "  :q, :quit                    Exit nix-repl\n"
-             << "  :r, :reload                  Reload all files\n"
-             << "  :sh <expr>                   Build dependencies of derivation, then start\n"
-             << "                               nix-shell\n"
-             << "  :t <expr>                    Describe result of evaluation\n"
-             << "  :u <expr>                    Build derivation, then start nix-shell\n"
-             << "  :doc <expr>                  Show documentation of a builtin function\n"
-             << "  :log <expr>                  Show logs for a derivation\n"
-             << "  :te, :trace-enable [bool]    Enable, disable or toggle showing traces for\n"
-             << "                               errors\n"
-             << "  :?, :help                    Brings up this help menu\n"
-             ;
+        std::cout << "The following commands are available:\n"
+                  << "\n"
+                  << "  <expr>                       Evaluate and print expression\n"
+                  << "  <x> = <expr>                 Bind expression to variable\n"
+                  << "  :a, :add <expr>              Add attributes from resulting set to scope\n"
+                  << "  :b <expr>                    Build a derivation\n"
+                  << "  :bl <expr>                   Build a derivation, creating GC roots in the\n"
+                  << "                               working directory\n"
+                  << "  :e, :edit <expr>             Open package or function in $EDITOR\n"
+                  << "  :i <expr>                    Build derivation, then install result into\n"
+                  << "                               current profile\n"
+                  << "  :l, :load <path>             Load Nix expression and add it to scope\n"
+                  << "  :lf, :load-flake <ref>       Load Nix flake and add it to scope\n"
+                  << "  :p, :print <expr>            Evaluate and print expression recursively\n"
+                  << "                               Strings are printed directly, without escaping.\n"
+                  << "  :q, :quit                    Exit nix-repl\n"
+                  << "  :r, :reload                  Reload all files\n"
+                  << "  :sh <expr>                   Build dependencies of derivation, then start\n"
+                  << "                               nix-shell\n"
+                  << "  :t <expr>                    Describe result of evaluation\n"
+                  << "  :u <expr>                    Build derivation, then start nix-shell\n"
+                  << "  :doc <expr>                  Show documentation of a builtin function\n"
+                  << "  :log <expr>                  Show logs for a derivation\n"
+                  << "  :te, :trace-enable [bool]    Enable, disable or toggle showing traces for\n"
+                  << "                               errors\n"
+                  << "  :?, :help                    Brings up this help menu\n";
         if (state->debugRepl) {
-             std::cout
-             << "\n"
-             << "        Debug mode commands\n"
-             << "  :env             Show env stack\n"
-             << "  :bt, :backtrace  Show trace stack\n"
-             << "  :st              Show current trace\n"
-             << "  :st <idx>        Change to another trace in the stack\n"
-             << "  :c, :continue    Go until end of program, exception, or builtins.break\n"
-             << "  :s, :step        Go one step\n"
-             ;
+            std::cout << "\n"
+                      << "        Debug mode commands\n"
+                      << "  :env             Show env stack\n"
+                      << "  :bt, :backtrace  Show trace stack\n"
+                      << "  :st              Show current trace\n"
+                      << "  :st <idx>        Change to another trace in the stack\n"
+                      << "  :c, :continue    Go until end of program, exception, or builtins.break\n"
+                      << "  :s, :step        Go one step\n";
         }
 
     }
@@ -427,17 +436,18 @@ ProcessLineResult NixRepl::processLine(std::string line)
         try {
             // change the DebugTrace index.
             debugTraceIndex = stoi(arg);
-        } catch (...) { }
+        } catch (...) {
+        }
 
         for (const auto & [idx, i] : enumerate(state->debugTraces)) {
-             if (idx == debugTraceIndex) {
-                 std::cout << "\n" << ANSI_BLUE << idx << ANSI_NORMAL << ": ";
-                 showDebugTrace(std::cout, state->positions, i);
-                 std::cout << std::endl;
-                 printEnvBindings(*state, i.expr, i.env);
-                 loadDebugTraceEnv(i);
-                 break;
-             }
+            if (idx == debugTraceIndex) {
+                std::cout << "\n" << ANSI_BLUE << idx << ANSI_NORMAL << ": ";
+                showDebugTrace(std::cout, state->positions, i);
+                std::cout << std::endl;
+                printEnvBindings(*state, i.expr, i.env);
+                loadDebugTraceEnv(i);
+                break;
+            }
         }
     }
 
@@ -477,7 +487,7 @@ ProcessLineResult NixRepl::processLine(std::string line)
         Value v;
         evalString(arg, v);
 
-        const auto [path, line] = [&] () -> std::pair<SourcePath, uint32_t> {
+        const auto [path, line] = [&]() -> std::pair<SourcePath, uint32_t> {
             if (v.type() == nPath || v.type() == nString) {
                 NixStringContext context;
                 auto path = state->coerceToPath(noPos, v, context, "while evaluating the filename to edit");
@@ -501,7 +511,7 @@ ProcessLineResult NixRepl::processLine(std::string line)
 
         // runProgram redirects stdout to a StringSink,
         // using runProgram2 to allow editors to display their UI
-        runProgram2(RunOptions { .program = editor, .lookupPath = true, .args = args , .isInteractive = true });
+        runProgram2(RunOptions{.program = editor, .lookupPath = true, .args = args, .isInteractive = true});
 
         // Reload right after exiting the editor
         state->resetFileCache();
@@ -532,9 +542,9 @@ ProcessLineResult NixRepl::processLine(std::string line)
 
         if (command == ":b" || command == ":bl") {
             state->store->buildPaths({
-                DerivedPath::Built {
+                DerivedPath::Built{
                     .drvPath = makeConstantStorePathRef(drvPath),
-                    .outputs = OutputsSpec::All { },
+                    .outputs = OutputsSpec::All{},
                 },
             });
             auto drv = state->store->readDerivation(drvPath);
@@ -553,9 +563,7 @@ ProcessLineResult NixRepl::processLine(std::string line)
             runNix("nix-env", {"-i", drvPathRaw});
         } else if (command == ":log") {
             settings.readOnlyMode = true;
-            Finally roModeReset([&]() {
-                settings.readOnlyMode = false;
-            });
+            Finally roModeReset([&]() { settings.readOnlyMode = false; });
             auto subs = getDefaultSubstituters();
 
             subs.push_front(state->store);
@@ -578,7 +586,8 @@ ProcessLineResult NixRepl::processLine(std::string line)
                     break;
                 }
             }
-            if (!foundLog) throw Error("build log of '%s' is not available", drvPathRaw);
+            if (!foundLog)
+                throw Error("build log of '%s' is not available", drvPathRaw);
         } else {
             runNix("nix-shell", {drvPathRaw});
         }
@@ -641,9 +650,8 @@ ProcessLineResult NixRepl::processLine(std::string line)
                 for (auto & arg : args)
                     arg = "*" + arg + "*";
 
-                markdown +=
-                    "**Synopsis:** `builtins." + (std::string) (*doc->name) + "` "
-                    + concatStringsSep(" ", args) + "\n\n";
+                markdown += "**Synopsis:** `builtins." + (std::string) (*doc->name) + "` " + concatStringsSep(" ", args)
+                            + "\n\n";
             }
 
             markdown += stripIndentation(doc->doc);
@@ -684,11 +692,8 @@ ProcessLineResult NixRepl::processLine(std::string line)
     else {
         size_t p = line.find('=');
         std::string name;
-        if (p != std::string::npos &&
-            p < line.size() &&
-            line[p + 1] != '=' &&
-            isVarName(name = removeWhitespace(line.substr(0, p))))
-        {
+        if (p != std::string::npos && p < line.size() && line[p + 1] != '='
+            && isVarName(name = removeWhitespace(line.substr(0, p)))) {
             Expr * e = parseString(line.substr(p + 1));
             Value & v(*state->allocValue());
             v.mkThunk(env, e);
@@ -736,9 +741,13 @@ void NixRepl::loadFlake(const std::string & flakeRefS)
 
     Value v;
 
-    flake::callFlake(*state,
-        flake::lockFlake(flakeSettings, *state, flakeRef,
-            flake::LockFlags {
+    flake::callFlake(
+        *state,
+        flake::lockFlake(
+            flakeSettings,
+            *state,
+            flakeRef,
+            flake::LockFlags{
                 .updateLockFile = false,
                 .useRegistries = !evalSettings.pureEval,
                 .allowUnlocked = !evalSettings.pureEval,
@@ -747,7 +756,6 @@ void NixRepl::loadFlake(const std::string & flakeRefS)
     addAttrsToScope(v);
 }
 
-
 void NixRepl::initEnv()
 {
     env = &state->allocEnv(envSize);
@@ -760,7 +768,6 @@ void NixRepl::initEnv()
         varNames.emplace(state->symbols[i.first]);
 }
 
-
 void NixRepl::reloadFilesAndFlakes()
 {
     initEnv();
@@ -769,7 +776,6 @@ void NixRepl::reloadFilesAndFlakes()
     loadFlakes();
 }
 
-
 void NixRepl::loadFiles()
 {
     Strings old = loadedFiles;
@@ -786,7 +792,6 @@ void NixRepl::loadFiles()
     }
 }
 
-
 void NixRepl::loadFlakes()
 {
     Strings old = loadedFlakes;
@@ -798,10 +803,12 @@ void NixRepl::loadFlakes()
     }
 }
 
-
 void NixRepl::addAttrsToScope(Value & attrs)
 {
-    state->forceAttrs(attrs, [&]() { return attrs.determinePos(noPos); }, "while evaluating an attribute set to be merged in the global scope");
+    state->forceAttrs(
+        attrs,
+        [&]() { return attrs.determinePos(noPos); },
+        "while evaluating an attribute set to be merged in the global scope");
     if (displ + attrs.attrs()->size() >= envSize)
         throw Error("environment full; cannot add more variables");
 
@@ -815,7 +822,6 @@ void NixRepl::addAttrsToScope(Value & attrs)
     notice("Added %1% variables.", attrs.attrs()->size());
 }
 
-
 void NixRepl::addVarToScope(const Symbol name, Value & v)
 {
     if (displ >= envSize)
@@ -828,13 +834,11 @@ void NixRepl::addVarToScope(const Symbol name, Value & v)
     varNames.emplace(state->symbols[name]);
 }
 
-
 Expr * NixRepl::parseString(std::string s)
 {
     return state->parseExprFromString(std::move(s), state->rootPath("."), staticEnv);
 }
 
-
 void NixRepl::evalString(std::string s, Value & v)
 {
     Expr * e = parseString(s);
@@ -842,46 +846,39 @@ void NixRepl::evalString(std::string s, Value & v)
     state->forceValue(v, v.determinePos(noPos));
 }
 
-
 void NixRepl::runNix(Path program, const Strings & args, const std::optional<std::string> & input)
 {
     if (runNixPtr)
         (*runNixPtr)(program, args, input);
     else
-        throw Error("Cannot run '%s' because no method of calling the Nix CLI was provided. This is a configuration problem pertaining to how this program was built. See Nix 2.25 release notes", program);
+        throw Error(
+            "Cannot run '%s' because no method of calling the Nix CLI was provided. This is a configuration problem pertaining to how this program was built. See Nix 2.25 release notes",
+            program);
 }
 
-
 std::unique_ptr<AbstractNixRepl> AbstractNixRepl::create(
-   const LookupPath & lookupPath, nix::ref<Store> store, ref<EvalState> state,
-   std::function<AnnotatedValues()> getValues, RunNix * runNix)
+    const LookupPath & lookupPath,
+    nix::ref<Store> store,
+    ref<EvalState> state,
+    std::function<AnnotatedValues()> getValues,
+    RunNix * runNix)
 {
-    return std::make_unique<NixRepl>(
-        lookupPath,
-        std::move(store),
-        state,
-        getValues,
-        runNix
-    );
+    return std::make_unique<NixRepl>(lookupPath, std::move(store), state, getValues, runNix);
 }
 
-
-ReplExitStatus AbstractNixRepl::runSimple(
-    ref<EvalState> evalState,
-    const ValMap & extraEnv)
+ReplExitStatus AbstractNixRepl::runSimple(ref<EvalState> evalState, const ValMap & extraEnv)
 {
-    auto getValues = [&]()->NixRepl::AnnotatedValues{
+    auto getValues = [&]() -> NixRepl::AnnotatedValues {
         NixRepl::AnnotatedValues values;
         return values;
     };
     LookupPath lookupPath = {};
     auto repl = std::make_unique<NixRepl>(
-            lookupPath,
-            openStore(),
-            evalState,
-            getValues,
-            /*runNix=*/nullptr
-        );
+        lookupPath,
+        openStore(),
+        evalState,
+        getValues,
+        /*runNix=*/nullptr);
 
     repl->initEnv();
 
@@ -892,4 +889,4 @@ ReplExitStatus AbstractNixRepl::runSimple(
     return repl->mainLoop();
 }
 
-}
+} // namespace nix

src/libexpr-c/nix_api_expr.cc

@@ -31,13 +31,11 @@
  * @param init Function that takes a T* and returns the initializer for T
  * @return Pointer to allocated and initialized object
  */
-template <typename T, typename F>
+template<typename T, typename F>
 static T * unsafe_new_with_self(F && init)
 {
     // Allocate
-    void * p = ::operator new(
-        sizeof(T),
-        static_cast<std::align_val_t>(alignof(T)));
+    void * p = ::operator new(sizeof(T), static_cast<std::align_val_t>(alignof(T)));
     // Initialize with placement new
     return new (p) T(init(static_cast<T *>(p)));
 }
@@ -86,12 +84,13 @@ nix_err nix_value_call(nix_c_context * context, EvalState * state, Value * fn, n
     NIXC_CATCH_ERRS
 }
 
-nix_err nix_value_call_multi(nix_c_context * context, EvalState * state, nix_value * fn, size_t nargs, nix_value ** args, nix_value * value)
+nix_err nix_value_call_multi(
+    nix_c_context * context, EvalState * state, nix_value * fn, size_t nargs, nix_value ** args, nix_value * value)
 {
     if (context)
         context->last_err_code = NIX_OK;
     try {
-        state->state.callFunction(fn->value, {(nix::Value * *) args, nargs}, value->value, nix::noPos);
+        state->state.callFunction(fn->value, {(nix::Value **) args, nargs}, value->value, nix::noPos);
         state->state.forceValue(value->value, nix::noPos);
     }
     NIXC_CATCH_ERRS
@@ -152,7 +151,8 @@ nix_err nix_eval_state_builder_load(nix_c_context * context, nix_eval_state_buil
     NIXC_CATCH_ERRS
 }
 
-nix_err nix_eval_state_builder_set_lookup_path(nix_c_context * context, nix_eval_state_builder * builder, const char ** lookupPath_c)
+nix_err nix_eval_state_builder_set_lookup_path(
+    nix_c_context * context, nix_eval_state_builder * builder, const char ** lookupPath_c)
 {
     if (context)
         context->last_err_code = NIX_OK;
@@ -175,11 +175,7 @@ EvalState * nix_eval_state_build(nix_c_context * context, nix_eval_state_builder
             return EvalState{
                 .fetchSettings = std::move(builder->fetchSettings),
                 .settings = std::move(builder->settings),
-                .state = nix::EvalState(
-                    builder->lookupPath,
-                    builder->store,
-                    self->fetchSettings,
-                    self->settings),
+                .state = nix::EvalState(builder->lookupPath, builder->store, self->fetchSettings, self->settings),
             };
         });
     }
@@ -195,11 +191,10 @@ EvalState * nix_state_create(nix_c_context * context, const char ** lookupPath_c
     if (nix_eval_state_builder_load(context, builder) != NIX_OK)
         return nullptr;
 
-    if (nix_eval_state_builder_set_lookup_path(context, builder, lookupPath_c)
-            != NIX_OK)
+    if (nix_eval_state_builder_set_lookup_path(context, builder, lookupPath_c) != NIX_OK)
         return nullptr;
 
-    auto *state = nix_eval_state_build(context, builder);
+    auto * state = nix_eval_state_build(context, builder);
     nix_eval_state_builder_free(builder);
     return state;
 }
@@ -265,20 +260,23 @@ nix_err nix_gc_incref(nix_c_context * context, const void *)
         context->last_err_code = NIX_OK;
     return NIX_OK;
 }
+
 nix_err nix_gc_decref(nix_c_context * context, const void *)
 {
     if (context)
         context->last_err_code = NIX_OK;
     return NIX_OK;
 }
+
 void nix_gc_now() {}
 #endif
 
-nix_err nix_value_incref(nix_c_context * context, nix_value *x)
+nix_err nix_value_incref(nix_c_context * context, nix_value * x)
 {
     return nix_gc_incref(context, (const void *) x);
 }
-nix_err nix_value_decref(nix_c_context * context, nix_value *x)
+
+nix_err nix_value_decref(nix_c_context * context, nix_value * x)
 {
     return nix_gc_decref(context, (const void *) x);
 }

src/libexpr-c/nix_api_external.cc

@@ -48,11 +48,13 @@ class NixCExternalValue : public nix::ExternalValueBase
 public:
     NixCExternalValue(NixCExternalValueDesc & desc, void * v)
         : desc(desc)
-        , v(v){};
+        , v(v) {};
+
     void * get_ptr()
     {
         return v;
     }
+
     /**
      * Print out the value
      */
@@ -155,11 +157,17 @@ public:
         }
         nix_string_context ctx{context};
         desc.printValueAsXML(
-            v, (EvalState *) &state, strict, location, &doc, &ctx, &drvsSeen,
+            v,
+            (EvalState *) &state,
+            strict,
+            location,
+            &doc,
+            &ctx,
+            &drvsSeen,
             *reinterpret_cast<const uint32_t *>(&pos));
     }
 
-    virtual ~NixCExternalValue() override{};
+    virtual ~NixCExternalValue() override {};
 };
 
 ExternalValue * nix_create_external_value(nix_c_context * context, NixCExternalValueDesc * desc, void * v)

src/libexpr-test-support/include/nix/expr/tests/libexpr.hh

@@ -16,141 +16,159 @@
 #include "nix/store/tests/libstore.hh"
 
 namespace nix {
-    class LibExprTest : public LibStoreTest {
-        public:
-            static void SetUpTestSuite() {
-                LibStoreTest::SetUpTestSuite();
-                initGC();
-            }
-
-        protected:
-            LibExprTest()
-                : LibStoreTest()
-                , state({}, store, fetchSettings, evalSettings, nullptr)
-            {
-                evalSettings.nixPath = {};
-            }
-            Value eval(std::string input, bool forceValue = true) {
-                Value v;
-                Expr * e = state.parseExprFromString(input, state.rootPath(CanonPath::root));
-                assert(e);
-                state.eval(e, v);
-                if (forceValue)
-                    state.forceValue(v, noPos);
-                return v;
-            }
-
-            Value * maybeThunk(std::string input, bool forceValue = true) {
-                Expr * e = state.parseExprFromString(input, state.rootPath(CanonPath::root));
-                assert(e);
-                return e->maybeThunk(state, state.baseEnv);
-            }
-
-            Symbol createSymbol(const char * value) {
-                return state.symbols.create(value);
-            }
-
-            bool readOnlyMode = true;
-            fetchers::Settings fetchSettings{};
-            EvalSettings evalSettings{readOnlyMode};
-            EvalState state;
-    };
-
-    MATCHER(IsListType, "") {
-        return arg != nList;
+class LibExprTest : public LibStoreTest
+{
+public:
+    static void SetUpTestSuite()
+    {
+        LibStoreTest::SetUpTestSuite();
+        initGC();
     }
 
-    MATCHER(IsList, "") {
-        return arg.type() == nList;
+protected:
+    LibExprTest()
+        : LibStoreTest()
+        , state({}, store, fetchSettings, evalSettings, nullptr)
+    {
+        evalSettings.nixPath = {};
     }
 
-    MATCHER(IsString, "") {
-        return arg.type() == nString;
+    Value eval(std::string input, bool forceValue = true)
+    {
+        Value v;
+        Expr * e = state.parseExprFromString(input, state.rootPath(CanonPath::root));
+        assert(e);
+        state.eval(e, v);
+        if (forceValue)
+            state.forceValue(v, noPos);
+        return v;
     }
 
-    MATCHER(IsNull, "") {
-        return arg.type() == nNull;
+    Value * maybeThunk(std::string input, bool forceValue = true)
+    {
+        Expr * e = state.parseExprFromString(input, state.rootPath(CanonPath::root));
+        assert(e);
+        return e->maybeThunk(state, state.baseEnv);
     }
 
-    MATCHER(IsThunk, "") {
-        return arg.type() == nThunk;
+    Symbol createSymbol(const char * value)
+    {
+        return state.symbols.create(value);
     }
 
-    MATCHER(IsAttrs, "") {
-        return arg.type() == nAttrs;
-    }
+    bool readOnlyMode = true;
+    fetchers::Settings fetchSettings{};
+    EvalSettings evalSettings{readOnlyMode};
+    EvalState state;
+};
 
-    MATCHER_P(IsStringEq, s, fmt("The string is equal to \"%1%\"", s)) {
-        if (arg.type() != nString) {
+MATCHER(IsListType, "")
+{
+    return arg != nList;
+}
+
+MATCHER(IsList, "")
+{
+    return arg.type() == nList;
+}
+
+MATCHER(IsString, "")
+{
+    return arg.type() == nString;
+}
+
+MATCHER(IsNull, "")
+{
+    return arg.type() == nNull;
+}
+
+MATCHER(IsThunk, "")
+{
+    return arg.type() == nThunk;
+}
+
+MATCHER(IsAttrs, "")
+{
+    return arg.type() == nAttrs;
+}
+
+MATCHER_P(IsStringEq, s, fmt("The string is equal to \"%1%\"", s))
+{
+    if (arg.type() != nString) {
+        return false;
+    }
+    return std::string_view(arg.c_str()) == s;
+}
+
+MATCHER_P(IsIntEq, v, fmt("The string is equal to \"%1%\"", v))
+{
+    if (arg.type() != nInt) {
+        return false;
+    }
+    return arg.integer().value == v;
+}
+
+MATCHER_P(IsFloatEq, v, fmt("The float is equal to \"%1%\"", v))
+{
+    if (arg.type() != nFloat) {
+        return false;
+    }
+    return arg.fpoint() == v;
+}
+
+MATCHER(IsTrue, "")
+{
+    if (arg.type() != nBool) {
+        return false;
+    }
+    return arg.boolean() == true;
+}
+
+MATCHER(IsFalse, "")
+{
+    if (arg.type() != nBool) {
+        return false;
+    }
+    return arg.boolean() == false;
+}
+
+MATCHER_P(IsPathEq, p, fmt("Is a path equal to \"%1%\"", p))
+{
+    if (arg.type() != nPath) {
+        *result_listener << "Expected a path got " << arg.type();
+        return false;
+    } else {
+        auto path = arg.path();
+        if (path.path != CanonPath(p)) {
+            *result_listener << "Expected a path that equals \"" << p << "\" but got: " << path.path;
             return false;
         }
-        return std::string_view(arg.c_str()) == s;
     }
+    return true;
+}
 
-    MATCHER_P(IsIntEq, v, fmt("The string is equal to \"%1%\"", v)) {
-        if (arg.type() != nInt) {
-            return false;
-        }
-        return arg.integer().value == v;
+MATCHER_P(IsListOfSize, n, fmt("Is a list of size [%1%]", n))
+{
+    if (arg.type() != nList) {
+        *result_listener << "Expected list got " << arg.type();
+        return false;
+    } else if (arg.listSize() != (size_t) n) {
+        *result_listener << "Expected as list of size " << n << " got " << arg.listSize();
+        return false;
     }
+    return true;
+}
 
-    MATCHER_P(IsFloatEq, v, fmt("The float is equal to \"%1%\"", v)) {
-        if (arg.type() != nFloat) {
-            return false;
-        }
-        return arg.fpoint() == v;
+MATCHER_P(IsAttrsOfSize, n, fmt("Is a set of size [%1%]", n))
+{
+    if (arg.type() != nAttrs) {
+        *result_listener << "Expected set got " << arg.type();
+        return false;
+    } else if (arg.attrs()->size() != (size_t) n) {
+        *result_listener << "Expected a set with " << n << " attributes but got " << arg.attrs()->size();
+        return false;
     }
-
-    MATCHER(IsTrue, "") {
-        if (arg.type() != nBool) {
-            return false;
-        }
-        return arg.boolean() == true;
-    }
-
-    MATCHER(IsFalse, "") {
-        if (arg.type() != nBool) {
-            return false;
-        }
-        return arg.boolean() == false;
-    }
-
-    MATCHER_P(IsPathEq, p, fmt("Is a path equal to \"%1%\"", p)) {
-        if (arg.type() != nPath) {
-            *result_listener << "Expected a path got " << arg.type();
-            return false;
-        } else {
-            auto path = arg.path();
-            if (path.path != CanonPath(p)) {
-                *result_listener << "Expected a path that equals \"" << p << "\" but got: " << path.path;
-                return false;
-            }
-        }
-        return true;
-    }
-
-
-    MATCHER_P(IsListOfSize, n, fmt("Is a list of size [%1%]", n)) {
-        if (arg.type() != nList) {
-            *result_listener << "Expected list got " << arg.type();
-            return false;
-        } else if (arg.listSize() != (size_t)n) {
-            *result_listener << "Expected as list of size " << n << " got " << arg.listSize();
-            return false;
-        }
-        return true;
-    }
-
-    MATCHER_P(IsAttrsOfSize, n, fmt("Is a set of size [%1%]", n)) {
-        if (arg.type() != nAttrs) {
-            *result_listener << "Expected set got " << arg.type();
-            return false;
-        } else if (arg.attrs()->size() != (size_t) n) {
-            *result_listener << "Expected a set with " << n << " attributes but got " << arg.attrs()->size();
-            return false;
-        }
-        return true;
-    }
-
+    return true;
+}
 
 } /* namespace nix */

src/libexpr-test-support/include/nix/expr/tests/nix_api_expr.hh

@@ -18,6 +18,7 @@ protected:
         state = nix_state_create(nullptr, nullptr, store);
         value = nix_alloc_value(nullptr, state);
     }
+
     ~nix_api_expr_test()
     {
         nix_gc_decref(nullptr, value);
@@ -28,4 +29,4 @@ protected:
     nix_value * value;
 };
 
-}
+} // namespace nixC

src/libexpr-test-support/include/nix/expr/tests/value/context.hh

@@ -9,23 +9,27 @@ namespace rc {
 using namespace nix;
 
 template<>
-struct Arbitrary<NixStringContextElem::Opaque> {
+struct Arbitrary<NixStringContextElem::Opaque>
+{
     static Gen<NixStringContextElem::Opaque> arbitrary();
 };
 
 template<>
-struct Arbitrary<NixStringContextElem::Built> {
+struct Arbitrary<NixStringContextElem::Built>
+{
     static Gen<NixStringContextElem::Built> arbitrary();
 };
 
 template<>
-struct Arbitrary<NixStringContextElem::DrvDeep> {
+struct Arbitrary<NixStringContextElem::DrvDeep>
+{
     static Gen<NixStringContextElem::DrvDeep> arbitrary();
 };
 
 template<>
-struct Arbitrary<NixStringContextElem> {
+struct Arbitrary<NixStringContextElem>
+{
     static Gen<NixStringContextElem> arbitrary();
 };
 
-}
+} // namespace rc

src/libexpr-test-support/tests/value/context.cc

@@ -36,4 +36,4 @@ Gen<NixStringContextElem> Arbitrary<NixStringContextElem>::arbitrary()
         });
 }
 
-}
+} // namespace rc

src/libexpr-tests/derived-path.cc

@@ -8,36 +8,30 @@
 namespace nix {
 
 // Testing of trivial expressions
-class DerivedPathExpressionTest : public LibExprTest {};
+class DerivedPathExpressionTest : public LibExprTest
+{};
 
 // FIXME: `RC_GTEST_FIXTURE_PROP` isn't calling `SetUpTestSuite` because it is
 // no a real fixture.
 //
 // See https://github.com/emil-e/rapidcheck/blob/master/doc/gtest.md#rc_gtest_fixture_propfixture-name-args
-TEST_F(DerivedPathExpressionTest, force_init)
-{
-}
+TEST_F(DerivedPathExpressionTest, force_init) {}
 
 #ifndef COVERAGE
 
-RC_GTEST_FIXTURE_PROP(
-    DerivedPathExpressionTest,
-    prop_opaque_path_round_trip,
-    (const SingleDerivedPath::Opaque & o))
+RC_GTEST_FIXTURE_PROP(DerivedPathExpressionTest, prop_opaque_path_round_trip, (const SingleDerivedPath::Opaque & o))
 {
     auto * v = state.allocValue();
     state.mkStorePathString(o.path, *v);
     auto d = state.coerceToSingleDerivedPath(noPos, *v, "");
-    RC_ASSERT(SingleDerivedPath { o } == d);
+    RC_ASSERT(SingleDerivedPath{o} == d);
 }
 
 // TODO use DerivedPath::Built for parameter once it supports a single output
 // path only.
 
 RC_GTEST_FIXTURE_PROP(
-    DerivedPathExpressionTest,
-    prop_derived_path_built_placeholder_round_trip,
-    (const SingleDerivedPath::Built & b))
+    DerivedPathExpressionTest, prop_derived_path_built_placeholder_round_trip, (const SingleDerivedPath::Built & b))
 {
     /**
      * We set these in tests rather than the regular globals so we don't have
@@ -49,7 +43,7 @@ RC_GTEST_FIXTURE_PROP(
     auto * v = state.allocValue();
     state.mkOutputString(*v, b, std::nullopt, mockXpSettings);
     auto [d, _] = state.coerceToSingleDerivedPathUnchecked(noPos, *v, "", mockXpSettings);
-    RC_ASSERT(SingleDerivedPath { b } == d);
+    RC_ASSERT(SingleDerivedPath{b} == d);
 }
 
 RC_GTEST_FIXTURE_PROP(
@@ -63,7 +57,7 @@ RC_GTEST_FIXTURE_PROP(
     auto * v = state.allocValue();
     state.mkOutputString(*v, b, outPath, mockXpSettings);
     auto [d, _] = state.coerceToSingleDerivedPathUnchecked(noPos, *v, "", mockXpSettings);
-    RC_ASSERT(SingleDerivedPath { b } == d);
+    RC_ASSERT(SingleDerivedPath{b} == d);
 }
 
 #endif

src/libexpr-tests/eval.cc

@@ -6,7 +6,8 @@
 
 namespace nix {
 
-TEST(nix_isAllowedURI, http_example_com) {
+TEST(nix_isAllowedURI, http_example_com)
+{
     Strings allowed;
     allowed.push_back("http://example.com");
 
@@ -20,7 +21,8 @@ TEST(nix_isAllowedURI, http_example_com) {
     ASSERT_FALSE(isAllowedURI("http://example.org/foo", allowed));
 }
 
-TEST(nix_isAllowedURI, http_example_com_foo) {
+TEST(nix_isAllowedURI, http_example_com_foo)
+{
     Strings allowed;
     allowed.push_back("http://example.com/foo");
 
@@ -34,7 +36,8 @@ TEST(nix_isAllowedURI, http_example_com_foo) {
     // ASSERT_TRUE(isAllowedURI("http://example.com/foo?ok=1", allowed));
 }
 
-TEST(nix_isAllowedURI, http) {
+TEST(nix_isAllowedURI, http)
+{
     Strings allowed;
     allowed.push_back("http://");
 
@@ -48,7 +51,8 @@ TEST(nix_isAllowedURI, http) {
     ASSERT_FALSE(isAllowedURI("http:foo", allowed));
 }
 
-TEST(nix_isAllowedURI, https) {
+TEST(nix_isAllowedURI, https)
+{
     Strings allowed;
     allowed.push_back("https://");
 
@@ -58,7 +62,8 @@ TEST(nix_isAllowedURI, https) {
     ASSERT_FALSE(isAllowedURI("http://example.com/https:", allowed));
 }
 
-TEST(nix_isAllowedURI, absolute_path) {
+TEST(nix_isAllowedURI, absolute_path)
+{
     Strings allowed;
     allowed.push_back("/var/evil"); // bad idea
 
@@ -76,7 +81,8 @@ TEST(nix_isAllowedURI, absolute_path) {
     ASSERT_FALSE(isAllowedURI("http://example.com//var/evil/foo", allowed));
 }
 
-TEST(nix_isAllowedURI, file_url) {
+TEST(nix_isAllowedURI, file_url)
+{
     Strings allowed;
     allowed.push_back("file:///var/evil"); // bad idea
 
@@ -103,7 +109,8 @@ TEST(nix_isAllowedURI, file_url) {
     ASSERT_FALSE(isAllowedURI("file://", allowed));
 }
 
-TEST(nix_isAllowedURI, github_all) {
+TEST(nix_isAllowedURI, github_all)
+{
     Strings allowed;
     allowed.push_back("github:");
     ASSERT_TRUE(isAllowedURI("github:", allowed));
@@ -117,7 +124,8 @@ TEST(nix_isAllowedURI, github_all) {
     ASSERT_FALSE(isAllowedURI("github", allowed));
 }
 
-TEST(nix_isAllowedURI, github_org) {
+TEST(nix_isAllowedURI, github_org)
+{
     Strings allowed;
     allowed.push_back("github:foo");
     ASSERT_FALSE(isAllowedURI("github:", allowed));
@@ -130,7 +138,8 @@ TEST(nix_isAllowedURI, github_org) {
     ASSERT_FALSE(isAllowedURI("file:///github:foo/bar/archive/master.tar.gz", allowed));
 }
 
-TEST(nix_isAllowedURI, non_scheme_colon) {
+TEST(nix_isAllowedURI, non_scheme_colon)
+{
     Strings allowed;
     allowed.push_back("https://foo/bar:");
     ASSERT_TRUE(isAllowedURI("https://foo/bar:", allowed));
@@ -138,16 +147,19 @@ TEST(nix_isAllowedURI, non_scheme_colon) {
     ASSERT_FALSE(isAllowedURI("https://foo/bar:baz", allowed));
 }
 
-class EvalStateTest : public LibExprTest {};
+class EvalStateTest : public LibExprTest
+{};
 
-TEST_F(EvalStateTest, getBuiltins_ok) {
+TEST_F(EvalStateTest, getBuiltins_ok)
+{
     auto evaled = maybeThunk("builtins");
     auto & builtins = state.getBuiltins();
     ASSERT_TRUE(builtins.type() == nAttrs);
     ASSERT_EQ(evaled, &builtins);
 }
 
-TEST_F(EvalStateTest, getBuiltin_ok) {
+TEST_F(EvalStateTest, getBuiltin_ok)
+{
     auto & builtin = state.getBuiltin("toString");
     ASSERT_TRUE(builtin.type() == nFunction);
     // FIXME
@@ -157,7 +169,8 @@ TEST_F(EvalStateTest, getBuiltin_ok) {
     ASSERT_EQ(state.forceBool(builtin2, noPos, "in unit test"), true);
 }
 
-TEST_F(EvalStateTest, getBuiltin_fail) {
+TEST_F(EvalStateTest, getBuiltin_fail)
+{
     ASSERT_THROW(state.getBuiltin("nonexistent"), EvalError);
 }
 

src/libexpr-tests/json.cc

@@ -4,65 +4,75 @@
 namespace nix {
 // Testing the conversion to JSON
 
-    class JSONValueTest : public LibExprTest {
-        protected:
-            std::string getJSONValue(Value& value) {
-                std::stringstream ss;
-                NixStringContext ps;
-                printValueAsJSON(state, true, value, noPos, ss, ps);
-                return ss.str();
-            }
-    };
-
-    TEST_F(JSONValueTest, null) {
-        Value v;
-        v.mkNull();
-        ASSERT_EQ(getJSONValue(v), "null");
+class JSONValueTest : public LibExprTest
+{
+protected:
+    std::string getJSONValue(Value & value)
+    {
+        std::stringstream ss;
+        NixStringContext ps;
+        printValueAsJSON(state, true, value, noPos, ss, ps);
+        return ss.str();
     }
+};
 
-    TEST_F(JSONValueTest, BoolFalse) {
-        Value v;
-        v.mkBool(false);
-        ASSERT_EQ(getJSONValue(v),"false");
-    }
+TEST_F(JSONValueTest, null)
+{
+    Value v;
+    v.mkNull();
+    ASSERT_EQ(getJSONValue(v), "null");
+}
 
-    TEST_F(JSONValueTest, BoolTrue) {
-        Value v;
-        v.mkBool(true);
-        ASSERT_EQ(getJSONValue(v), "true");
-    }
+TEST_F(JSONValueTest, BoolFalse)
+{
+    Value v;
+    v.mkBool(false);
+    ASSERT_EQ(getJSONValue(v), "false");
+}
 
-    TEST_F(JSONValueTest, IntPositive) {
-        Value v;
-        v.mkInt(100);
-        ASSERT_EQ(getJSONValue(v), "100");
-    }
+TEST_F(JSONValueTest, BoolTrue)
+{
+    Value v;
+    v.mkBool(true);
+    ASSERT_EQ(getJSONValue(v), "true");
+}
 
-    TEST_F(JSONValueTest, IntNegative) {
-        Value v;
-        v.mkInt(-100);
-        ASSERT_EQ(getJSONValue(v), "-100");
-    }
+TEST_F(JSONValueTest, IntPositive)
+{
+    Value v;
+    v.mkInt(100);
+    ASSERT_EQ(getJSONValue(v), "100");
+}
 
-    TEST_F(JSONValueTest, String) {
-        Value v;
-        v.mkString("test");
-        ASSERT_EQ(getJSONValue(v), "\"test\"");
-    }
+TEST_F(JSONValueTest, IntNegative)
+{
+    Value v;
+    v.mkInt(-100);
+    ASSERT_EQ(getJSONValue(v), "-100");
+}
 
-    TEST_F(JSONValueTest, StringQuotes) {
-        Value v;
+TEST_F(JSONValueTest, String)
+{
+    Value v;
+    v.mkString("test");
+    ASSERT_EQ(getJSONValue(v), "\"test\"");
+}
 
-        v.mkString("test\"");
-        ASSERT_EQ(getJSONValue(v), "\"test\\\"\"");
-    }
+TEST_F(JSONValueTest, StringQuotes)
+{
+    Value v;
 
-    // The dummy store doesn't support writing files. Fails with this exception message:
-    // C++ exception with description "error: operation 'addToStoreFromDump' is
-    // not supported by store 'dummy'" thrown in the test body.
-    TEST_F(JSONValueTest, DISABLED_Path) {
-        Value v;
-        v.mkPath(state.rootPath(CanonPath("/test")));
-        ASSERT_EQ(getJSONValue(v), "\"/nix/store/g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x\"");
-    }
+    v.mkString("test\"");
+    ASSERT_EQ(getJSONValue(v), "\"test\\\"\"");
+}
+
+// The dummy store doesn't support writing files. Fails with this exception message:
+// C++ exception with description "error: operation 'addToStoreFromDump' is
+// not supported by store 'dummy'" thrown in the test body.
+TEST_F(JSONValueTest, DISABLED_Path)
+{
+    Value v;
+    v.mkPath(state.rootPath(CanonPath("/test")));
+    ASSERT_EQ(getJSONValue(v), "\"/nix/store/g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x\"");
+}
 } /* namespace nix */

src/libexpr-tests/main.cc

@@ -5,7 +5,8 @@
 
 using namespace nix;
 
-int main (int argc, char **argv) {
+int main(int argc, char ** argv)
+{
     if (argc > 1 && std::string_view(argv[1]) == "__build-remote") {
         printError("test-build-remote: not supported in libexpr unit tests");
         return 1;
@@ -14,25 +15,26 @@ int main (int argc, char **argv) {
     // Disable build hook. We won't be testing remote builds in these unit tests. If we do, fix the above build hook.
     settings.buildHook = {};
 
-    #ifdef __linux__ // should match the conditional around sandboxBuildDir declaration.
+#ifdef __linux__ // should match the conditional around sandboxBuildDir declaration.
 
-    // When building and testing nix within the host's Nix sandbox, our store dir will be located in the host's sandboxBuildDir, e.g.:
-    // Host
+    // When building and testing nix within the host's Nix sandbox, our store dir will be located in the host's
+    // sandboxBuildDir, e.g.: Host
     //   storeDir = /nix/store
     //   sandboxBuildDir = /build
     // This process
     //   storeDir = /build/foo/bar/store
     //   sandboxBuildDir = /build
-    // However, we have a rule that the store dir must not be inside the storeDir, so we need to pick a different sandboxBuildDir.
+    // However, we have a rule that the store dir must not be inside the storeDir, so we need to pick a different
+    // sandboxBuildDir.
     settings.sandboxBuildDir = "/test-build-dir-instead-of-usual-build-dir";
-    #endif
+#endif
 
-    #ifdef __APPLE__
+#ifdef __APPLE__
     // Avoid this error, when already running in a sandbox:
     // sandbox-exec: sandbox_apply: Operation not permitted
     settings.sandboxMode = smDisabled;
     setEnv("_NIX_TEST_NO_SANDBOX", "1");
-    #endif
+#endif
 
     // For pipe operator tests in trivial.cc
     experimentalFeatureSettings.set("experimental-features", "pipe-operators");

src/libexpr-tests/meson.build

@@ -32,8 +32,8 @@ deps_private += rapidcheck
 gtest = dependency('gtest')
 deps_private += gtest
 
-gtest = dependency('gmock')
-deps_private += gtest
+gmock = dependency('gmock')
+deps_private += gmock
 
 configdata = configuration_data()
 configdata.set_quoted('PACKAGE_VERSION', meson.project_version())

src/libexpr-tests/nix_api_expr.cc

@@ -394,6 +394,7 @@ static void primop_bad_return_thunk(
 {
     nix_init_apply(context, ret, args[0], args[1]);
 }
+
 TEST_F(nix_api_expr_test, nix_expr_primop_bad_return_thunk)
 {
     PrimOp * primop =

src/libexpr-tests/nix_api_external.cc

@@ -27,6 +27,7 @@ public:
 
 private:
     int _x;
+
     static void print_function(void * self, nix_printer * printer) {}
 
     static void show_type_function(void * self, nix_string_return * res) {}
@@ -68,4 +69,4 @@ TEST_F(nix_api_expr_test, nix_expr_eval_external)
     nix_state_free(stateFn);
 }
 
-}
+} // namespace nixC

src/libexpr-tests/nix_api_value.cc

@@ -120,6 +120,7 @@ TEST_F(nix_api_expr_test, nix_value_set_get_path_invalid)
     ASSERT_EQ(nullptr, nix_get_path_string(ctx, value));
     assert_ctx_err();
 }
+
 TEST_F(nix_api_expr_test, nix_value_set_get_path)
 {
     const char * p = "/nix/store/40s0qmrfb45vlh6610rk29ym318dswdr-myname";
@@ -399,4 +400,4 @@ TEST_F(nix_api_expr_test, nix_copy_value)
     nix_gc_decref(ctx, source);
 }
 
-}
+} // namespace nixC

src/libexpr-tests/search-path.cc

@@ -5,86 +5,98 @@
 
 namespace nix {
 
-TEST(LookupPathElem, parse_justPath) {
+TEST(LookupPathElem, parse_justPath)
+{
     ASSERT_EQ(
         LookupPath::Elem::parse("foo"),
-        (LookupPath::Elem {
-            .prefix = LookupPath::Prefix { .s = "" },
-            .path = LookupPath::Path { .s = "foo" },
+        (LookupPath::Elem{
+            .prefix = LookupPath::Prefix{.s = ""},
+            .path = LookupPath::Path{.s = "foo"},
         }));
 }
 
-TEST(LookupPathElem, parse_emptyPrefix) {
+TEST(LookupPathElem, parse_emptyPrefix)
+{
     ASSERT_EQ(
         LookupPath::Elem::parse("=foo"),
-        (LookupPath::Elem {
-            .prefix = LookupPath::Prefix { .s = "" },
-            .path = LookupPath::Path { .s = "foo" },
+        (LookupPath::Elem{
+            .prefix = LookupPath::Prefix{.s = ""},
+            .path = LookupPath::Path{.s = "foo"},
         }));
 }
 
-TEST(LookupPathElem, parse_oneEq) {
+TEST(LookupPathElem, parse_oneEq)
+{
     ASSERT_EQ(
         LookupPath::Elem::parse("foo=bar"),
-        (LookupPath::Elem {
-            .prefix = LookupPath::Prefix { .s = "foo" },
-            .path = LookupPath::Path { .s = "bar" },
+        (LookupPath::Elem{
+            .prefix = LookupPath::Prefix{.s = "foo"},
+            .path = LookupPath::Path{.s = "bar"},
         }));
 }
 
-TEST(LookupPathElem, parse_twoEqs) {
+TEST(LookupPathElem, parse_twoEqs)
+{
     ASSERT_EQ(
         LookupPath::Elem::parse("foo=bar=baz"),
-        (LookupPath::Elem {
-            .prefix = LookupPath::Prefix { .s = "foo" },
-            .path = LookupPath::Path { .s = "bar=baz" },
+        (LookupPath::Elem{
+            .prefix = LookupPath::Prefix{.s = "foo"},
+            .path = LookupPath::Path{.s = "bar=baz"},
         }));
 }
 
-
-TEST(LookupPathElem, suffixIfPotentialMatch_justPath) {
-    LookupPath::Prefix prefix { .s = "" };
-    ASSERT_EQ(prefix.suffixIfPotentialMatch("any/thing"), std::optional { "any/thing" });
+TEST(LookupPathElem, suffixIfPotentialMatch_justPath)
+{
+    LookupPath::Prefix prefix{.s = ""};
+    ASSERT_EQ(prefix.suffixIfPotentialMatch("any/thing"), std::optional{"any/thing"});
 }
 
-TEST(LookupPathElem, suffixIfPotentialMatch_misleadingPrefix1) {
-    LookupPath::Prefix prefix { .s = "foo" };
+TEST(LookupPathElem, suffixIfPotentialMatch_misleadingPrefix1)
+{
+    LookupPath::Prefix prefix{.s = "foo"};
     ASSERT_EQ(prefix.suffixIfPotentialMatch("fooX"), std::nullopt);
 }
 
-TEST(LookupPathElem, suffixIfPotentialMatch_misleadingPrefix2) {
-    LookupPath::Prefix prefix { .s = "foo" };
+TEST(LookupPathElem, suffixIfPotentialMatch_misleadingPrefix2)
+{
+    LookupPath::Prefix prefix{.s = "foo"};
     ASSERT_EQ(prefix.suffixIfPotentialMatch("fooX/bar"), std::nullopt);
 }
 
-TEST(LookupPathElem, suffixIfPotentialMatch_partialPrefix) {
-    LookupPath::Prefix prefix { .s = "fooX" };
+TEST(LookupPathElem, suffixIfPotentialMatch_partialPrefix)
+{
+    LookupPath::Prefix prefix{.s = "fooX"};
     ASSERT_EQ(prefix.suffixIfPotentialMatch("foo"), std::nullopt);
 }
 
-TEST(LookupPathElem, suffixIfPotentialMatch_exactPrefix) {
-    LookupPath::Prefix prefix { .s = "foo" };
-    ASSERT_EQ(prefix.suffixIfPotentialMatch("foo"), std::optional { "" });
+TEST(LookupPathElem, suffixIfPotentialMatch_exactPrefix)
+{
+    LookupPath::Prefix prefix{.s = "foo"};
+    ASSERT_EQ(prefix.suffixIfPotentialMatch("foo"), std::optional{""});
 }
 
-TEST(LookupPathElem, suffixIfPotentialMatch_multiKey) {
-    LookupPath::Prefix prefix { .s = "foo/bar" };
-    ASSERT_EQ(prefix.suffixIfPotentialMatch("foo/bar/baz"), std::optional { "baz" });
+TEST(LookupPathElem, suffixIfPotentialMatch_multiKey)
+{
+    LookupPath::Prefix prefix{.s = "foo/bar"};
+    ASSERT_EQ(prefix.suffixIfPotentialMatch("foo/bar/baz"), std::optional{"baz"});
 }
 
-TEST(LookupPathElem, suffixIfPotentialMatch_trailingSlash) {
-    LookupPath::Prefix prefix { .s = "foo" };
-    ASSERT_EQ(prefix.suffixIfPotentialMatch("foo/"), std::optional { "" });
+TEST(LookupPathElem, suffixIfPotentialMatch_trailingSlash)
+{
+    LookupPath::Prefix prefix{.s = "foo"};
+    ASSERT_EQ(prefix.suffixIfPotentialMatch("foo/"), std::optional{""});
 }
 
-TEST(LookupPathElem, suffixIfPotentialMatch_trailingDoubleSlash) {
-    LookupPath::Prefix prefix { .s = "foo" };
-    ASSERT_EQ(prefix.suffixIfPotentialMatch("foo//"), std::optional { "/" });
+TEST(LookupPathElem, suffixIfPotentialMatch_trailingDoubleSlash)
+{
+    LookupPath::Prefix prefix{.s = "foo"};
+    ASSERT_EQ(prefix.suffixIfPotentialMatch("foo//"), std::optional{"/"});
 }
 
-TEST(LookupPathElem, suffixIfPotentialMatch_trailingPath) {
-    LookupPath::Prefix prefix { .s = "foo" };
-    ASSERT_EQ(prefix.suffixIfPotentialMatch("foo/bar/baz"), std::optional { "bar/baz" });
+TEST(LookupPathElem, suffixIfPotentialMatch_trailingPath)
+{
+    LookupPath::Prefix prefix{.s = "foo"};
+    ASSERT_EQ(prefix.suffixIfPotentialMatch("foo/bar/baz"), std::optional{"bar/baz"});
 }
 
-}
+} // namespace nix

src/libexpr-tests/trivial.cc

@@ -1,181 +1,202 @@
 #include "nix/expr/tests/libexpr.hh"
 
 namespace nix {
-    // Testing of trivial expressions
-    class TrivialExpressionTest : public LibExprTest {};
+// Testing of trivial expressions
+class TrivialExpressionTest : public LibExprTest
+{};
 
-    TEST_F(TrivialExpressionTest, true) {
-        auto v = eval("true");
-        ASSERT_THAT(v, IsTrue());
-    }
+TEST_F(TrivialExpressionTest, true)
+{
+    auto v = eval("true");
+    ASSERT_THAT(v, IsTrue());
+}
 
-    TEST_F(TrivialExpressionTest, false) {
-        auto v = eval("false");
-        ASSERT_THAT(v, IsFalse());
-    }
+TEST_F(TrivialExpressionTest, false)
+{
+    auto v = eval("false");
+    ASSERT_THAT(v, IsFalse());
+}
 
-    TEST_F(TrivialExpressionTest, null) {
-        auto v = eval("null");
-        ASSERT_THAT(v, IsNull());
-    }
+TEST_F(TrivialExpressionTest, null)
+{
+    auto v = eval("null");
+    ASSERT_THAT(v, IsNull());
+}
 
-    TEST_F(TrivialExpressionTest, 1) {
-        auto v = eval("1");
-        ASSERT_THAT(v, IsIntEq(1));
-    }
+TEST_F(TrivialExpressionTest, 1)
+{
+    auto v = eval("1");
+    ASSERT_THAT(v, IsIntEq(1));
+}
 
-    TEST_F(TrivialExpressionTest, 1plus1) {
-        auto v = eval("1+1");
-        ASSERT_THAT(v, IsIntEq(2));
-    }
+TEST_F(TrivialExpressionTest, 1plus1)
+{
+    auto v = eval("1+1");
+    ASSERT_THAT(v, IsIntEq(2));
+}
 
-    TEST_F(TrivialExpressionTest, minus1) {
-        auto v = eval("-1");
-        ASSERT_THAT(v, IsIntEq(-1));
-    }
+TEST_F(TrivialExpressionTest, minus1)
+{
+    auto v = eval("-1");
+    ASSERT_THAT(v, IsIntEq(-1));
+}
 
-    TEST_F(TrivialExpressionTest, 1minus1) {
-        auto v = eval("1-1");
-        ASSERT_THAT(v, IsIntEq(0));
-    }
+TEST_F(TrivialExpressionTest, 1minus1)
+{
+    auto v = eval("1-1");
+    ASSERT_THAT(v, IsIntEq(0));
+}
 
-    TEST_F(TrivialExpressionTest, lambdaAdd) {
-        auto v = eval("let add = a: b: a + b; in add 1 2");
-        ASSERT_THAT(v, IsIntEq(3));
-    }
+TEST_F(TrivialExpressionTest, lambdaAdd)
+{
+    auto v = eval("let add = a: b: a + b; in add 1 2");
+    ASSERT_THAT(v, IsIntEq(3));
+}
 
-    TEST_F(TrivialExpressionTest, list) {
-        auto v = eval("[]");
-        ASSERT_THAT(v, IsListOfSize(0));
-    }
+TEST_F(TrivialExpressionTest, list)
+{
+    auto v = eval("[]");
+    ASSERT_THAT(v, IsListOfSize(0));
+}
 
-    TEST_F(TrivialExpressionTest, attrs) {
-        auto v = eval("{}");
-        ASSERT_THAT(v, IsAttrsOfSize(0));
-    }
+TEST_F(TrivialExpressionTest, attrs)
+{
+    auto v = eval("{}");
+    ASSERT_THAT(v, IsAttrsOfSize(0));
+}
 
-    TEST_F(TrivialExpressionTest, float) {
-        auto v = eval("1.234");
-        ASSERT_THAT(v, IsFloatEq(1.234));
-    }
+TEST_F(TrivialExpressionTest, float)
+{
+    auto v = eval("1.234");
+    ASSERT_THAT(v, IsFloatEq(1.234));
+}
 
-    TEST_F(TrivialExpressionTest, updateAttrs) {
-        auto v = eval("{ a = 1; } // { b = 2; a = 3; }");
-        ASSERT_THAT(v, IsAttrsOfSize(2));
-        auto a = v.attrs()->find(createSymbol("a"));
-        ASSERT_NE(a, nullptr);
-        ASSERT_THAT(*a->value, IsIntEq(3));
+TEST_F(TrivialExpressionTest, updateAttrs)
+{
+    auto v = eval("{ a = 1; } // { b = 2; a = 3; }");
+    ASSERT_THAT(v, IsAttrsOfSize(2));
+    auto a = v.attrs()->find(createSymbol("a"));
+    ASSERT_NE(a, nullptr);
+    ASSERT_THAT(*a->value, IsIntEq(3));
 
-        auto b = v.attrs()->find(createSymbol("b"));
-        ASSERT_NE(b, nullptr);
-        ASSERT_THAT(*b->value, IsIntEq(2));
-    }
+    auto b = v.attrs()->find(createSymbol("b"));
+    ASSERT_NE(b, nullptr);
+    ASSERT_THAT(*b->value, IsIntEq(2));
+}
 
-    TEST_F(TrivialExpressionTest, hasAttrOpFalse) {
-        auto v = eval("{} ? a");
-        ASSERT_THAT(v, IsFalse());
-    }
+TEST_F(TrivialExpressionTest, hasAttrOpFalse)
+{
+    auto v = eval("{} ? a");
+    ASSERT_THAT(v, IsFalse());
+}
 
-    TEST_F(TrivialExpressionTest, hasAttrOpTrue) {
-        auto v = eval("{ a = 123; } ? a");
-        ASSERT_THAT(v, IsTrue());
-    }
+TEST_F(TrivialExpressionTest, hasAttrOpTrue)
+{
+    auto v = eval("{ a = 123; } ? a");
+    ASSERT_THAT(v, IsTrue());
+}
 
-    TEST_F(TrivialExpressionTest, withFound) {
-        auto v = eval("with { a = 23; }; a");
-        ASSERT_THAT(v, IsIntEq(23));
-    }
+TEST_F(TrivialExpressionTest, withFound)
+{
+    auto v = eval("with { a = 23; }; a");
+    ASSERT_THAT(v, IsIntEq(23));
+}
 
-    TEST_F(TrivialExpressionTest, withNotFound) {
-        ASSERT_THROW(eval("with {}; a"), Error);
-    }
+TEST_F(TrivialExpressionTest, withNotFound)
+{
+    ASSERT_THROW(eval("with {}; a"), Error);
+}
 
-    TEST_F(TrivialExpressionTest, withOverride) {
-        auto v = eval("with { a = 23; }; with { a = 42; }; a");
-        ASSERT_THAT(v, IsIntEq(42));
-    }
+TEST_F(TrivialExpressionTest, withOverride)
+{
+    auto v = eval("with { a = 23; }; with { a = 42; }; a");
+    ASSERT_THAT(v, IsIntEq(42));
+}
 
-    TEST_F(TrivialExpressionTest, letOverWith) {
-        auto v = eval("let a = 23; in with { a = 1; }; a");
-        ASSERT_THAT(v, IsIntEq(23));
-    }
+TEST_F(TrivialExpressionTest, letOverWith)
+{
+    auto v = eval("let a = 23; in with { a = 1; }; a");
+    ASSERT_THAT(v, IsIntEq(23));
+}
 
-    TEST_F(TrivialExpressionTest, multipleLet) {
-        auto v = eval("let a = 23; in let a = 42; in a");
-        ASSERT_THAT(v, IsIntEq(42));
-    }
+TEST_F(TrivialExpressionTest, multipleLet)
+{
+    auto v = eval("let a = 23; in let a = 42; in a");
+    ASSERT_THAT(v, IsIntEq(42));
+}
 
-    TEST_F(TrivialExpressionTest, defaultFunctionArgs) {
-        auto v = eval("({ a ? 123 }: a) {}");
-        ASSERT_THAT(v, IsIntEq(123));
-    }
+TEST_F(TrivialExpressionTest, defaultFunctionArgs)
+{
+    auto v = eval("({ a ? 123 }: a) {}");
+    ASSERT_THAT(v, IsIntEq(123));
+}
 
-    TEST_F(TrivialExpressionTest, defaultFunctionArgsOverride) {
-        auto v = eval("({ a ? 123 }: a) { a = 5; }");
-        ASSERT_THAT(v, IsIntEq(5));
-    }
+TEST_F(TrivialExpressionTest, defaultFunctionArgsOverride)
+{
+    auto v = eval("({ a ? 123 }: a) { a = 5; }");
+    ASSERT_THAT(v, IsIntEq(5));
+}
 
-    TEST_F(TrivialExpressionTest, defaultFunctionArgsCaptureBack) {
-        auto v = eval("({ a ? 123 }@args: args) {}");
-        ASSERT_THAT(v, IsAttrsOfSize(0));
-    }
+TEST_F(TrivialExpressionTest, defaultFunctionArgsCaptureBack)
+{
+    auto v = eval("({ a ? 123 }@args: args) {}");
+    ASSERT_THAT(v, IsAttrsOfSize(0));
+}
 
-    TEST_F(TrivialExpressionTest, defaultFunctionArgsCaptureFront) {
-        auto v = eval("(args@{ a ? 123 }: args) {}");
-        ASSERT_THAT(v, IsAttrsOfSize(0));
-    }
+TEST_F(TrivialExpressionTest, defaultFunctionArgsCaptureFront)
+{
+    auto v = eval("(args@{ a ? 123 }: args) {}");
+    ASSERT_THAT(v, IsAttrsOfSize(0));
+}
 
-    TEST_F(TrivialExpressionTest, assertThrows) {
-        ASSERT_THROW(eval("let x = arg: assert arg == 1; 123; in x 2"), Error);
-    }
+TEST_F(TrivialExpressionTest, assertThrows)
+{
+    ASSERT_THROW(eval("let x = arg: assert arg == 1; 123; in x 2"), Error);
+}
 
-    TEST_F(TrivialExpressionTest, assertPassed) {
-        auto v = eval("let x = arg: assert arg == 1; 123; in x 1");
-        ASSERT_THAT(v, IsIntEq(123));
-    }
+TEST_F(TrivialExpressionTest, assertPassed)
+{
+    auto v = eval("let x = arg: assert arg == 1; 123; in x 1");
+    ASSERT_THAT(v, IsIntEq(123));
+}
 
-    class AttrSetMergeTrvialExpressionTest :
-        public TrivialExpressionTest,
-        public testing::WithParamInterface<const char*>
-        {};
+class AttrSetMergeTrvialExpressionTest : public TrivialExpressionTest, public testing::WithParamInterface<const char *>
+{};
 
-    TEST_P(AttrSetMergeTrvialExpressionTest, attrsetMergeLazy) {
-        // Usually Nix rejects duplicate keys in an attrset but it does allow
-        // so if it is an attribute set that contains disjoint sets of keys.
-        // The below is equivalent to `{a.b = 1; a.c = 2; }`.
-        // The attribute set `a` will be a Thunk at first as the attribuets
-        // have to be merged (or otherwise computed) and that is done in a lazy
-        // manner.
+TEST_P(AttrSetMergeTrvialExpressionTest, attrsetMergeLazy)
+{
+    // Usually Nix rejects duplicate keys in an attrset but it does allow
+    // so if it is an attribute set that contains disjoint sets of keys.
+    // The below is equivalent to `{a.b = 1; a.c = 2; }`.
+    // The attribute set `a` will be a Thunk at first as the attribuets
+    // have to be merged (or otherwise computed) and that is done in a lazy
+    // manner.
 
-        auto expr = GetParam();
-        auto v = eval(expr);
-        ASSERT_THAT(v, IsAttrsOfSize(1));
+    auto expr = GetParam();
+    auto v = eval(expr);
+    ASSERT_THAT(v, IsAttrsOfSize(1));
 
-        auto a = v.attrs()->find(createSymbol("a"));
-        ASSERT_NE(a, nullptr);
+    auto a = v.attrs()->find(createSymbol("a"));
+    ASSERT_NE(a, nullptr);
 
-        ASSERT_THAT(*a->value, IsThunk());
-        state.forceValue(*a->value, noPos);
+    ASSERT_THAT(*a->value, IsThunk());
+    state.forceValue(*a->value, noPos);
 
-        ASSERT_THAT(*a->value, IsAttrsOfSize(2));
+    ASSERT_THAT(*a->value, IsAttrsOfSize(2));
 
-        auto b = a->value->attrs()->find(createSymbol("b"));
-        ASSERT_NE(b, nullptr);
-        ASSERT_THAT(*b->value, IsIntEq(1));
+    auto b = a->value->attrs()->find(createSymbol("b"));
+    ASSERT_NE(b, nullptr);
+    ASSERT_THAT(*b->value, IsIntEq(1));
 
-        auto c = a->value->attrs()->find(createSymbol("c"));
-        ASSERT_NE(c, nullptr);
-        ASSERT_THAT(*c->value, IsIntEq(2));
-    }
+    auto c = a->value->attrs()->find(createSymbol("c"));
+    ASSERT_NE(c, nullptr);
+    ASSERT_THAT(*c->value, IsIntEq(2));
+}
 
-    INSTANTIATE_TEST_SUITE_P(
-            attrsetMergeLazy,
-            AttrSetMergeTrvialExpressionTest,
-            testing::Values(
-                "{ a.b = 1; a.c = 2; }",
-                "{ a = { b = 1; }; a = { c = 2; }; }"
-            )
-    );
+INSTANTIATE_TEST_SUITE_P(
+    attrsetMergeLazy,
+    AttrSetMergeTrvialExpressionTest,
+    testing::Values("{ a.b = 1; a.c = 2; }", "{ a = { b = 1; }; a = { c = 2; }; }"));
 
 // The following macros ultimately define 48 tests (16 variations on three
 // templates). Each template tests an expression that can be written in 2^4
@@ -199,28 +220,34 @@ namespace nix {
 // expanded.
 #define X_EXPAND_IF0(k, v) k "." v
 #define X_EXPAND_IF1(k, v) k " = { " v " };"
-#define X4(w, x, y, z) \
-    TEST_F(TrivialExpressionTest, nestedAttrsetMerge##w##x##y##z) { \
-        auto v = eval("{ a.b = { c = 1; d = 2; }; } == { " \
-                X_EXPAND_IF##w("a", X_EXPAND_IF##x("b", "c = 1;")) " " \
-                X_EXPAND_IF##y("a", X_EXPAND_IF##z("b", "d = 2;")) " }"); \
-        ASSERT_THAT(v, IsTrue()); \
-    }; \
-    TEST_F(TrivialExpressionTest, nestedAttrsetMergeDup##w##x##y##z) { \
-        ASSERT_THROW(eval("{ " \
-                X_EXPAND_IF##w("a", X_EXPAND_IF##x("b", "c = 1;")) " " \
-                X_EXPAND_IF##y("a", X_EXPAND_IF##z("b", "c = 2;")) " }"), Error); \
-    }; \
-    TEST_F(TrivialExpressionTest, nestedAttrsetMergeLet##w##x##y##z) { \
-        auto v = eval("{ b = { c = 1; d = 2; }; } == (let " \
-                X_EXPAND_IF##w("a", X_EXPAND_IF##x("b", "c = 1;")) " " \
-                X_EXPAND_IF##y("a", X_EXPAND_IF##z("b", "d = 2;")) " in a)"); \
-        ASSERT_THAT(v, IsTrue()); \
+#define X4(w, x, y, z)                                                                                                \
+    TEST_F(TrivialExpressionTest, nestedAttrsetMerge##w##x##y##z)                                                     \
+    {                                                                                                                 \
+        auto v = eval(                                                                                                \
+            "{ a.b = { c = 1; d = 2; }; } == { " X_EXPAND_IF##w(                                                      \
+                "a", X_EXPAND_IF##x("b", "c = 1;")) " " X_EXPAND_IF##y("a", X_EXPAND_IF##z("b", "d = 2;")) " }");     \
+        ASSERT_THAT(v, IsTrue());                                                                                     \
+    };                                                                                                                \
+    TEST_F(TrivialExpressionTest, nestedAttrsetMergeDup##w##x##y##z)                                                  \
+    {                                                                                                                 \
+        ASSERT_THROW(                                                                                                 \
+            eval(                                                                                                     \
+                "{ " X_EXPAND_IF##w("a", X_EXPAND_IF##x("b", "c = 1;")) " " X_EXPAND_IF##y(                           \
+                    "a", X_EXPAND_IF##z("b", "c = 2;")) " }"),                                                        \
+            Error);                                                                                                   \
+    };                                                                                                                \
+    TEST_F(TrivialExpressionTest, nestedAttrsetMergeLet##w##x##y##z)                                                  \
+    {                                                                                                                 \
+        auto v = eval(                                                                                                \
+            "{ b = { c = 1; d = 2; }; } == (let " X_EXPAND_IF##w(                                                     \
+                "a", X_EXPAND_IF##x("b", "c = 1;")) " " X_EXPAND_IF##y("a", X_EXPAND_IF##z("b", "d = 2;")) " in a)"); \
+        ASSERT_THAT(v, IsTrue());                                                                                     \
     };
 #define X3(...) X4(__VA_ARGS__, 0) X4(__VA_ARGS__, 1)
 #define X2(...) X3(__VA_ARGS__, 0) X3(__VA_ARGS__, 1)
 #define X1(...) X2(__VA_ARGS__, 0) X2(__VA_ARGS__, 1)
-    X1(0) X1(1)
+X1(0)
+X1(1)
 #undef X_EXPAND_IF0
 #undef X_EXPAND_IF1
 #undef X1
@@ -228,74 +255,88 @@ namespace nix {
 #undef X3
 #undef X4
 
-    TEST_F(TrivialExpressionTest, functor) {
-        auto v = eval("{ __functor = self: arg: self.v + arg; v = 10; } 5");
-        ASSERT_THAT(v, IsIntEq(15));
-    }
+TEST_F(TrivialExpressionTest, functor)
+{
+    auto v = eval("{ __functor = self: arg: self.v + arg; v = 10; } 5");
+    ASSERT_THAT(v, IsIntEq(15));
+}
 
-    TEST_F(TrivialExpressionTest, forwardPipe) {
-        auto v = eval("1 |> builtins.add 2 |> builtins.mul 3");
-        ASSERT_THAT(v, IsIntEq(9));
-    }
+TEST_F(TrivialExpressionTest, forwardPipe)
+{
+    auto v = eval("1 |> builtins.add 2 |> builtins.mul 3");
+    ASSERT_THAT(v, IsIntEq(9));
+}
 
-    TEST_F(TrivialExpressionTest, backwardPipe) {
-        auto v = eval("builtins.add 1 <| builtins.mul 2 <| 3");
-        ASSERT_THAT(v, IsIntEq(7));
-    }
+TEST_F(TrivialExpressionTest, backwardPipe)
+{
+    auto v = eval("builtins.add 1 <| builtins.mul 2 <| 3");
+    ASSERT_THAT(v, IsIntEq(7));
+}
 
-    TEST_F(TrivialExpressionTest, forwardPipeEvaluationOrder) {
-        auto v = eval("1 |> null |> (x: 2)");
-        ASSERT_THAT(v, IsIntEq(2));
-    }
+TEST_F(TrivialExpressionTest, forwardPipeEvaluationOrder)
+{
+    auto v = eval("1 |> null |> (x: 2)");
+    ASSERT_THAT(v, IsIntEq(2));
+}
 
-    TEST_F(TrivialExpressionTest, backwardPipeEvaluationOrder) {
-        auto v = eval("(x: 1) <| null <| 2");
-        ASSERT_THAT(v, IsIntEq(1));
-    }
+TEST_F(TrivialExpressionTest, backwardPipeEvaluationOrder)
+{
+    auto v = eval("(x: 1) <| null <| 2");
+    ASSERT_THAT(v, IsIntEq(1));
+}
 
-    TEST_F(TrivialExpressionTest, differentPipeOperatorsDoNotAssociate) {
-        ASSERT_THROW(eval("(x: 1) <| 2 |> (x: 3)"), ParseError);
-    }
+TEST_F(TrivialExpressionTest, differentPipeOperatorsDoNotAssociate)
+{
+    ASSERT_THROW(eval("(x: 1) <| 2 |> (x: 3)"), ParseError);
+}
 
-    TEST_F(TrivialExpressionTest, differentPipeOperatorsParensLeft) {
-        auto v = eval("((x: 1) <| 2) |> (x: 3)");
-        ASSERT_THAT(v, IsIntEq(3));
-    }
+TEST_F(TrivialExpressionTest, differentPipeOperatorsParensLeft)
+{
+    auto v = eval("((x: 1) <| 2) |> (x: 3)");
+    ASSERT_THAT(v, IsIntEq(3));
+}
 
-    TEST_F(TrivialExpressionTest, differentPipeOperatorsParensRight) {
-        auto v = eval("(x: 1) <| (2 |> (x: 3))");
-        ASSERT_THAT(v, IsIntEq(1));
-    }
+TEST_F(TrivialExpressionTest, differentPipeOperatorsParensRight)
+{
+    auto v = eval("(x: 1) <| (2 |> (x: 3))");
+    ASSERT_THAT(v, IsIntEq(1));
+}
 
-    TEST_F(TrivialExpressionTest, forwardPipeLowestPrecedence) {
-        auto v = eval("false -> true |> (x: !x)");
-        ASSERT_THAT(v, IsFalse());
-    }
+TEST_F(TrivialExpressionTest, forwardPipeLowestPrecedence)
+{
+    auto v = eval("false -> true |> (x: !x)");
+    ASSERT_THAT(v, IsFalse());
+}
 
-    TEST_F(TrivialExpressionTest, backwardPipeLowestPrecedence) {
-        auto v = eval("(x: !x) <| false -> true");
-        ASSERT_THAT(v, IsFalse());
-    }
+TEST_F(TrivialExpressionTest, backwardPipeLowestPrecedence)
+{
+    auto v = eval("(x: !x) <| false -> true");
+    ASSERT_THAT(v, IsFalse());
+}
 
-    TEST_F(TrivialExpressionTest, forwardPipeStrongerThanElse) {
-        auto v = eval("if true then 1 else 2 |> 3");
-        ASSERT_THAT(v, IsIntEq(1));
-    }
+TEST_F(TrivialExpressionTest, forwardPipeStrongerThanElse)
+{
+    auto v = eval("if true then 1 else 2 |> 3");
+    ASSERT_THAT(v, IsIntEq(1));
+}
 
-    TEST_F(TrivialExpressionTest, backwardPipeStrongerThanElse) {
-        auto v = eval("if true then 1 else 2 <| 3");
-        ASSERT_THAT(v, IsIntEq(1));
-    }
+TEST_F(TrivialExpressionTest, backwardPipeStrongerThanElse)
+{
+    auto v = eval("if true then 1 else 2 <| 3");
+    ASSERT_THAT(v, IsIntEq(1));
+}
 
-    TEST_F(TrivialExpressionTest, bindOr) {
-        auto v = eval("{ or = 1; }");
-        ASSERT_THAT(v, IsAttrsOfSize(1));
-        auto b = v.attrs()->find(createSymbol("or"));
-        ASSERT_NE(b, nullptr);
-        ASSERT_THAT(*b->value, IsIntEq(1));
-    }
+TEST_F(TrivialExpressionTest, bindOr)
+{
+    auto v = eval("{ or = 1; }");
+    ASSERT_THAT(v, IsAttrsOfSize(1));
+    auto b = v.attrs()->find(createSymbol("or"));
+    ASSERT_NE(b, nullptr);
+    ASSERT_THAT(*b->value, IsIntEq(1));
+}
 
-    TEST_F(TrivialExpressionTest, orCantBeUsed) {
-        ASSERT_THROW(eval("let or = 1; in or"), Error);
-    }
+TEST_F(TrivialExpressionTest, orCantBeUsed)
+{
+    ASSERT_THROW(eval("let or = 1; in or"), Error);
+}
 } /* namespace nix */

src/libexpr-tests/value/context.cc

@@ -10,46 +10,42 @@ namespace nix {
 
 // Test a few cases of invalid string context elements.
 
-TEST(NixStringContextElemTest, empty_invalid) {
-    EXPECT_THROW(
-        NixStringContextElem::parse(""),
-        BadNixStringContextElem);
+TEST(NixStringContextElemTest, empty_invalid)
+{
+    EXPECT_THROW(NixStringContextElem::parse(""), BadNixStringContextElem);
 }
 
-TEST(NixStringContextElemTest, single_bang_invalid) {
-    EXPECT_THROW(
-        NixStringContextElem::parse("!"),
-        BadNixStringContextElem);
+TEST(NixStringContextElemTest, single_bang_invalid)
+{
+    EXPECT_THROW(NixStringContextElem::parse("!"), BadNixStringContextElem);
 }
 
-TEST(NixStringContextElemTest, double_bang_invalid) {
-    EXPECT_THROW(
-        NixStringContextElem::parse("!!/"),
-        BadStorePath);
+TEST(NixStringContextElemTest, double_bang_invalid)
+{
+    EXPECT_THROW(NixStringContextElem::parse("!!/"), BadStorePath);
 }
 
-TEST(NixStringContextElemTest, eq_slash_invalid) {
-    EXPECT_THROW(
-        NixStringContextElem::parse("=/"),
-        BadStorePath);
+TEST(NixStringContextElemTest, eq_slash_invalid)
+{
+    EXPECT_THROW(NixStringContextElem::parse("=/"), BadStorePath);
 }
 
-TEST(NixStringContextElemTest, slash_invalid) {
-    EXPECT_THROW(
-        NixStringContextElem::parse("/"),
-        BadStorePath);
+TEST(NixStringContextElemTest, slash_invalid)
+{
+    EXPECT_THROW(NixStringContextElem::parse("/"), BadStorePath);
 }
 
 /**
  * Round trip (string <-> data structure) test for
  * `NixStringContextElem::Opaque`.
  */
-TEST(NixStringContextElemTest, opaque) {
+TEST(NixStringContextElemTest, opaque)
+{
     std::string_view opaque = "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x";
     auto elem = NixStringContextElem::parse(opaque);
     auto * p = std::get_if<NixStringContextElem::Opaque>(&elem.raw);
     ASSERT_TRUE(p);
-    ASSERT_EQ(p->path, StorePath { opaque });
+    ASSERT_EQ(p->path, StorePath{opaque});
     ASSERT_EQ(elem.to_string(), opaque);
 }
 
@@ -57,12 +53,13 @@ TEST(NixStringContextElemTest, opaque) {
  * Round trip (string <-> data structure) test for
  * `NixStringContextElem::DrvDeep`.
  */
-TEST(NixStringContextElemTest, drvDeep) {
+TEST(NixStringContextElemTest, drvDeep)
+{
     std::string_view drvDeep = "=g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
     auto elem = NixStringContextElem::parse(drvDeep);
     auto * p = std::get_if<NixStringContextElem::DrvDeep>(&elem.raw);
     ASSERT_TRUE(p);
-    ASSERT_EQ(p->drvPath, StorePath { drvDeep.substr(1) });
+    ASSERT_EQ(p->drvPath, StorePath{drvDeep.substr(1)});
     ASSERT_EQ(elem.to_string(), drvDeep);
 }
 
@@ -70,15 +67,18 @@ TEST(NixStringContextElemTest, drvDeep) {
  * Round trip (string <-> data structure) test for a simpler
  * `NixStringContextElem::Built`.
  */
-TEST(NixStringContextElemTest, built_opaque) {
+TEST(NixStringContextElemTest, built_opaque)
+{
     std::string_view built = "!foo!g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
     auto elem = NixStringContextElem::parse(built);
     auto * p = std::get_if<NixStringContextElem::Built>(&elem.raw);
     ASSERT_TRUE(p);
     ASSERT_EQ(p->output, "foo");
-    ASSERT_EQ(*p->drvPath, ((SingleDerivedPath) SingleDerivedPath::Opaque {
-        .path = StorePath { built.substr(5) },
-    }));
+    ASSERT_EQ(
+        *p->drvPath,
+        ((SingleDerivedPath) SingleDerivedPath::Opaque{
+            .path = StorePath{built.substr(5)},
+        }));
     ASSERT_EQ(elem.to_string(), built);
 }
 
@@ -86,7 +86,8 @@ TEST(NixStringContextElemTest, built_opaque) {
  * Round trip (string <-> data structure) test for a more complex,
  * inductive `NixStringContextElem::Built`.
  */
-TEST(NixStringContextElemTest, built_built) {
+TEST(NixStringContextElemTest, built_built)
+{
     /**
      * We set these in tests rather than the regular globals so we don't have
      * to worry about race conditions if the tests run concurrently.
@@ -102,9 +103,11 @@ TEST(NixStringContextElemTest, built_built) {
     auto * drvPath = std::get_if<SingleDerivedPath::Built>(&*p->drvPath);
     ASSERT_TRUE(drvPath);
     ASSERT_EQ(drvPath->output, "bar");
-    ASSERT_EQ(*drvPath->drvPath, ((SingleDerivedPath) SingleDerivedPath::Opaque {
-        .path = StorePath { built.substr(9) },
-    }));
+    ASSERT_EQ(
+        *drvPath->drvPath,
+        ((SingleDerivedPath) SingleDerivedPath::Opaque{
+            .path = StorePath{built.substr(9)},
+        }));
     ASSERT_EQ(elem.to_string(), built);
 }
 
@@ -112,17 +115,15 @@ TEST(NixStringContextElemTest, built_built) {
  * Without the right experimental features enabled, we cannot parse a
  * complex inductive string context element.
  */
-TEST(NixStringContextElemTest, built_built_xp) {
+TEST(NixStringContextElemTest, built_built_xp)
+{
     ASSERT_THROW(
-        NixStringContextElem::parse("!foo!bar!g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv"),        MissingExperimentalFeature);
+        NixStringContextElem::parse("!foo!bar!g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv"), MissingExperimentalFeature);
 }
 
 #ifndef COVERAGE
 
-RC_GTEST_PROP(
-    NixStringContextElemTest,
-    prop_round_rip,
-    (const NixStringContextElem & o))
+RC_GTEST_PROP(NixStringContextElemTest, prop_round_rip, (const NixStringContextElem & o))
 {
     ExperimentalFeatureSettings xpSettings;
     xpSettings.set("experimental-features", "dynamic-derivations");
@@ -131,4 +132,4 @@ RC_GTEST_PROP(
 
 #endif
 
-}
+} // namespace nix

src/libexpr-tests/value/print.cc

@@ -106,14 +106,11 @@ TEST_F(ValuePrintingTests, vApp)
 
 TEST_F(ValuePrintingTests, vLambda)
 {
-    Env env {
-        .up = nullptr,
-        .values = { }
-    };
+    Env env{.up = nullptr, .values = {}};
     PosTable::Origin origin = state.positions.addOrigin(std::monostate(), 1);
     auto posIdx = state.positions.add(origin, 0);
     auto body = ExprInt(0);
-    auto formals = Formals {};
+    auto formals = Formals{};
 
     ExprLambda eLambda(posIdx, createSymbol("a"), &formals, &body);
 
@@ -130,9 +127,7 @@ TEST_F(ValuePrintingTests, vLambda)
 TEST_F(ValuePrintingTests, vPrimOp)
 {
     Value vPrimOp;
-    PrimOp primOp{
-        .name = "puppy"
-    };
+    PrimOp primOp{.name = "puppy"};
     vPrimOp.mkPrimOp(&primOp);
 
     test(vPrimOp, "«primop puppy»");
@@ -140,9 +135,7 @@ TEST_F(ValuePrintingTests, vPrimOp)
 
 TEST_F(ValuePrintingTests, vPrimOpApp)
 {
-    PrimOp primOp{
-        .name = "puppy"
-    };
+    PrimOp primOp{.name = "puppy"};
     Value vPrimOp;
     vPrimOp.mkPrimOp(&primOp);
 
@@ -161,16 +154,19 @@ TEST_F(ValuePrintingTests, vExternal)
         {
             return "";
         }
+
         std::string typeOf() const override
         {
             return "";
         }
+
         virtual std::ostream & print(std::ostream & str) const override
         {
             str << "testing-external!";
             return str;
         }
     } myExternal;
+
     Value vExternal;
     vExternal.mkExternal(&myExternal);
 
@@ -220,10 +216,13 @@ TEST_F(ValuePrintingTests, depthAttrs)
     Value vNested;
     vNested.mkAttrs(builder2.finish());
 
-    test(vNested, "{ nested = { ... }; one = 1; two = 2; }", PrintOptions { .maxDepth = 1 });
-    test(vNested, "{ nested = { nested = { ... }; one = 1; two = 2; }; one = 1; two = 2; }", PrintOptions { .maxDepth = 2 });
-    test(vNested, "{ nested = { nested = { }; one = 1; two = 2; }; one = 1; two = 2; }", PrintOptions { .maxDepth = 3 });
-    test(vNested, "{ nested = { nested = { }; one = 1; two = 2; }; one = 1; two = 2; }", PrintOptions { .maxDepth = 4 });
+    test(vNested, "{ nested = { ... }; one = 1; two = 2; }", PrintOptions{.maxDepth = 1});
+    test(
+        vNested,
+        "{ nested = { nested = { ... }; one = 1; two = 2; }; one = 1; two = 2; }",
+        PrintOptions{.maxDepth = 2});
+    test(vNested, "{ nested = { nested = { }; one = 1; two = 2; }; one = 1; two = 2; }", PrintOptions{.maxDepth = 3});
+    test(vNested, "{ nested = { nested = { }; one = 1; two = 2; }; one = 1; two = 2; }", PrintOptions{.maxDepth = 4});
 }
 
 TEST_F(ValuePrintingTests, depthList)
@@ -256,11 +255,11 @@ TEST_F(ValuePrintingTests, depthList)
     Value vList;
     vList.mkList(list);
 
-    test(vList, "[ 1 2 { ... } ]", PrintOptions { .maxDepth = 1 });
-    test(vList, "[ 1 2 { nested = { ... }; one = 1; two = 2; } ]", PrintOptions { .maxDepth = 2 });
-    test(vList, "[ 1 2 { nested = { one = 1; two = 2; }; one = 1; two = 2; } ]", PrintOptions { .maxDepth = 3 });
-    test(vList, "[ 1 2 { nested = { one = 1; two = 2; }; one = 1; two = 2; } ]", PrintOptions { .maxDepth = 4 });
-    test(vList, "[ 1 2 { nested = { one = 1; two = 2; }; one = 1; two = 2; } ]", PrintOptions { .maxDepth = 5 });
+    test(vList, "[ 1 2 { ... } ]", PrintOptions{.maxDepth = 1});
+    test(vList, "[ 1 2 { nested = { ... }; one = 1; two = 2; } ]", PrintOptions{.maxDepth = 2});
+    test(vList, "[ 1 2 { nested = { one = 1; two = 2; }; one = 1; two = 2; } ]", PrintOptions{.maxDepth = 3});
+    test(vList, "[ 1 2 { nested = { one = 1; two = 2; }; one = 1; two = 2; } ]", PrintOptions{.maxDepth = 4});
+    test(vList, "[ 1 2 { nested = { one = 1; two = 2; }; one = 1; two = 2; } ]", PrintOptions{.maxDepth = 5});
 }
 
 struct StringPrintingTests : LibExprTest
@@ -272,9 +271,7 @@ struct StringPrintingTests : LibExprTest
         v.mkString(literal);
 
         std::stringstream out;
-        printValue(state, out, v, PrintOptions {
-            .maxStringLength = maxLength
-        });
+        printValue(state, out, v, PrintOptions{.maxStringLength = maxLength});
         ASSERT_EQ(out.str(), expected);
     }
 };
@@ -305,15 +302,9 @@ TEST_F(ValuePrintingTests, attrsTypeFirst)
     Value vAttrs;
     vAttrs.mkAttrs(builder.finish());
 
-    test(vAttrs,
-         "{ type = \"puppy\"; apple = \"apple\"; }",
-         PrintOptions {
-            .maxAttrs = 100
-         });
+    test(vAttrs, "{ type = \"puppy\"; apple = \"apple\"; }", PrintOptions{.maxAttrs = 100});
 
-    test(vAttrs,
-         "{ apple = \"apple\"; type = \"puppy\"; }",
-         PrintOptions { });
+    test(vAttrs, "{ apple = \"apple\"; type = \"puppy\"; }", PrintOptions{});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsInt)
@@ -321,11 +312,7 @@ TEST_F(ValuePrintingTests, ansiColorsInt)
     Value v;
     v.mkInt(10);
 
-    test(v,
-         ANSI_CYAN "10" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(v, ANSI_CYAN "10" ANSI_NORMAL, PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsFloat)
@@ -333,11 +320,7 @@ TEST_F(ValuePrintingTests, ansiColorsFloat)
     Value v;
     v.mkFloat(1.6);
 
-    test(v,
-         ANSI_CYAN "1.6" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(v, ANSI_CYAN "1.6" ANSI_NORMAL, PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsBool)
@@ -345,11 +328,7 @@ TEST_F(ValuePrintingTests, ansiColorsBool)
     Value v;
     v.mkBool(true);
 
-    test(v,
-         ANSI_CYAN "true" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(v, ANSI_CYAN "true" ANSI_NORMAL, PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsString)
@@ -357,11 +336,7 @@ TEST_F(ValuePrintingTests, ansiColorsString)
     Value v;
     v.mkString("puppy");
 
-    test(v,
-         ANSI_MAGENTA "\"puppy\"" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true
-        });
+    test(v, ANSI_MAGENTA "\"puppy\"" ANSI_NORMAL, PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsStringElided)
@@ -369,12 +344,10 @@ TEST_F(ValuePrintingTests, ansiColorsStringElided)
     Value v;
     v.mkString("puppy");
 
-    test(v,
-         ANSI_MAGENTA "\"pup\" " ANSI_FAINT "«2 bytes elided»" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true,
-             .maxStringLength = 3
-         });
+    test(
+        v,
+        ANSI_MAGENTA "\"pup\" " ANSI_FAINT "«2 bytes elided»" ANSI_NORMAL,
+        PrintOptions{.ansiColors = true, .maxStringLength = 3});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsPath)
@@ -382,11 +355,7 @@ TEST_F(ValuePrintingTests, ansiColorsPath)
     Value v;
     v.mkPath(state.rootPath(CanonPath("puppy")));
 
-    test(v,
-         ANSI_GREEN "/puppy" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(v, ANSI_GREEN "/puppy" ANSI_NORMAL, PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsNull)
@@ -394,11 +363,7 @@ TEST_F(ValuePrintingTests, ansiColorsNull)
     Value v;
     v.mkNull();
 
-    test(v,
-         ANSI_CYAN "null" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(v, ANSI_CYAN "null" ANSI_NORMAL, PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsAttrs)
@@ -416,11 +381,10 @@ TEST_F(ValuePrintingTests, ansiColorsAttrs)
     Value vAttrs;
     vAttrs.mkAttrs(builder.finish());
 
-    test(vAttrs,
-         "{ one = " ANSI_CYAN "1" ANSI_NORMAL "; two = " ANSI_CYAN "2" ANSI_NORMAL "; }",
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(
+        vAttrs,
+        "{ one = " ANSI_CYAN "1" ANSI_NORMAL "; two = " ANSI_CYAN "2" ANSI_NORMAL "; }",
+        PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsDerivation)
@@ -434,20 +398,15 @@ TEST_F(ValuePrintingTests, ansiColorsDerivation)
     Value vAttrs;
     vAttrs.mkAttrs(builder.finish());
 
-    test(vAttrs,
-         ANSI_GREEN "«derivation»" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true,
-             .force = true,
-             .derivationPaths = true
-         });
+    test(
+        vAttrs,
+        ANSI_GREEN "«derivation»" ANSI_NORMAL,
+        PrintOptions{.ansiColors = true, .force = true, .derivationPaths = true});
 
-    test(vAttrs,
-         "{ type = " ANSI_MAGENTA "\"derivation\"" ANSI_NORMAL "; }",
-         PrintOptions {
-             .ansiColors = true,
-             .force = true
-         });
+    test(
+        vAttrs,
+        "{ type = " ANSI_MAGENTA "\"derivation\"" ANSI_NORMAL "; }",
+        PrintOptions{.ansiColors = true, .force = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsError)
@@ -458,14 +417,13 @@ TEST_F(ValuePrintingTests, ansiColorsError)
     Value vError;
     vError.mkApp(&throw_, &message);
 
-    test(vError,
-         ANSI_RED
-         "«error: uh oh!»"
-         ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true,
-             .force = true,
-         });
+    test(
+        vError,
+        ANSI_RED "«error: uh oh!»" ANSI_NORMAL,
+        PrintOptions{
+            .ansiColors = true,
+            .force = true,
+        });
 }
 
 TEST_F(ValuePrintingTests, ansiColorsDerivationError)
@@ -486,30 +444,20 @@ TEST_F(ValuePrintingTests, ansiColorsDerivationError)
     Value vAttrs;
     vAttrs.mkAttrs(builder.finish());
 
-    test(vAttrs,
-         "{ drvPath = "
-         ANSI_RED
-         "«error: uh oh!»"
-         ANSI_NORMAL
-         "; type = "
-         ANSI_MAGENTA
-         "\"derivation\""
-         ANSI_NORMAL
-         "; }",
-         PrintOptions {
-             .ansiColors = true,
-             .force = true
-         });
+    test(
+        vAttrs,
+        "{ drvPath = " ANSI_RED "«error: uh oh!»" ANSI_NORMAL "; type = " ANSI_MAGENTA "\"derivation\"" ANSI_NORMAL
+        "; }",
+        PrintOptions{.ansiColors = true, .force = true});
 
-    test(vAttrs,
-         ANSI_RED
-         "«error: uh oh!»"
-         ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true,
-             .force = true,
-             .derivationPaths = true,
-         });
+    test(
+        vAttrs,
+        ANSI_RED "«error: uh oh!»" ANSI_NORMAL,
+        PrintOptions{
+            .ansiColors = true,
+            .force = true,
+            .derivationPaths = true,
+        });
 }
 
 TEST_F(ValuePrintingTests, ansiColorsAssert)
@@ -523,12 +471,7 @@ TEST_F(ValuePrintingTests, ansiColorsAssert)
     Value v;
     state.mkThunk_(v, &expr);
 
-    test(v,
-         ANSI_RED "«error: assertion 'false' failed»" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true,
-             .force = true
-         });
+    test(v, ANSI_RED "«error: assertion 'false' failed»" ANSI_NORMAL, PrintOptions{.ansiColors = true, .force = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsList)
@@ -545,77 +488,51 @@ TEST_F(ValuePrintingTests, ansiColorsList)
     Value vList;
     vList.mkList(list);
 
-    test(vList,
-         "[ " ANSI_CYAN "1" ANSI_NORMAL " " ANSI_CYAN "2" ANSI_NORMAL " " ANSI_MAGENTA "«nullptr»" ANSI_NORMAL " ]",
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(
+        vList,
+        "[ " ANSI_CYAN "1" ANSI_NORMAL " " ANSI_CYAN "2" ANSI_NORMAL " " ANSI_MAGENTA "«nullptr»" ANSI_NORMAL " ]",
+        PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsLambda)
 {
-    Env env {
-        .up = nullptr,
-        .values = { }
-    };
+    Env env{.up = nullptr, .values = {}};
     PosTable::Origin origin = state.positions.addOrigin(std::monostate(), 1);
     auto posIdx = state.positions.add(origin, 0);
     auto body = ExprInt(0);
-    auto formals = Formals {};
+    auto formals = Formals{};
 
     ExprLambda eLambda(posIdx, createSymbol("a"), &formals, &body);
 
     Value vLambda;
     vLambda.mkLambda(&env, &eLambda);
 
-    test(vLambda,
-         ANSI_BLUE "«lambda @ «none»:1:1»" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true,
-             .force = true
-         });
+    test(vLambda, ANSI_BLUE "«lambda @ «none»:1:1»" ANSI_NORMAL, PrintOptions{.ansiColors = true, .force = true});
 
     eLambda.setName(createSymbol("puppy"));
 
-    test(vLambda,
-         ANSI_BLUE "«lambda puppy @ «none»:1:1»" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true,
-             .force = true
-         });
+    test(vLambda, ANSI_BLUE "«lambda puppy @ «none»:1:1»" ANSI_NORMAL, PrintOptions{.ansiColors = true, .force = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsPrimOp)
 {
-    PrimOp primOp{
-        .name = "puppy"
-    };
+    PrimOp primOp{.name = "puppy"};
     Value v;
     v.mkPrimOp(&primOp);
 
-    test(v,
-         ANSI_BLUE "«primop puppy»" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(v, ANSI_BLUE "«primop puppy»" ANSI_NORMAL, PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsPrimOpApp)
 {
-    PrimOp primOp{
-        .name = "puppy"
-    };
+    PrimOp primOp{.name = "puppy"};
     Value vPrimOp;
     vPrimOp.mkPrimOp(&primOp);
 
     Value v;
     v.mkPrimOpApp(&vPrimOp, nullptr);
 
-    test(v,
-         ANSI_BLUE "«partially applied primop puppy»" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(v, ANSI_BLUE "«partially applied primop puppy»" ANSI_NORMAL, PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsThunk)
@@ -623,11 +540,7 @@ TEST_F(ValuePrintingTests, ansiColorsThunk)
     Value v;
     v.mkThunk(nullptr, nullptr);
 
-    test(v,
-         ANSI_MAGENTA "«thunk»" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(v, ANSI_MAGENTA "«thunk»" ANSI_NORMAL, PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsBlackhole)
@@ -635,11 +548,7 @@ TEST_F(ValuePrintingTests, ansiColorsBlackhole)
     Value v;
     v.mkBlackhole();
 
-    test(v,
-         ANSI_RED "«potential infinite recursion»" ANSI_NORMAL,
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(v, ANSI_RED "«potential infinite recursion»" ANSI_NORMAL, PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsAttrsRepeated)
@@ -656,11 +565,7 @@ TEST_F(ValuePrintingTests, ansiColorsAttrsRepeated)
     Value vAttrs;
     vAttrs.mkAttrs(builder.finish());
 
-    test(vAttrs,
-         "{ a = { }; b = " ANSI_MAGENTA "«repeated»" ANSI_NORMAL "; }",
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(vAttrs, "{ a = { }; b = " ANSI_MAGENTA "«repeated»" ANSI_NORMAL "; }", PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsListRepeated)
@@ -676,11 +581,7 @@ TEST_F(ValuePrintingTests, ansiColorsListRepeated)
     Value vList;
     vList.mkList(list);
 
-    test(vList,
-         "[ { } " ANSI_MAGENTA "«repeated»" ANSI_NORMAL " ]",
-         PrintOptions {
-             .ansiColors = true
-         });
+    test(vList, "[ { } " ANSI_MAGENTA "«repeated»" ANSI_NORMAL " ]", PrintOptions{.ansiColors = true});
 }
 
 TEST_F(ValuePrintingTests, listRepeated)
@@ -696,12 +597,8 @@ TEST_F(ValuePrintingTests, listRepeated)
     Value vList;
     vList.mkList(list);
 
-    test(vList, "[ { } «repeated» ]", PrintOptions { });
-    test(vList,
-         "[ { } { } ]",
-         PrintOptions {
-             .trackRepeated = false
-         });
+    test(vList, "[ { } «repeated» ]", PrintOptions{});
+    test(vList, "[ { } { } ]", PrintOptions{.trackRepeated = false});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsAttrsElided)
@@ -719,12 +616,10 @@ TEST_F(ValuePrintingTests, ansiColorsAttrsElided)
     Value vAttrs;
     vAttrs.mkAttrs(builder.finish());
 
-    test(vAttrs,
-         "{ one = " ANSI_CYAN "1" ANSI_NORMAL "; " ANSI_FAINT "«1 attribute elided»" ANSI_NORMAL " }",
-         PrintOptions {
-             .ansiColors = true,
-             .maxAttrs = 1
-         });
+    test(
+        vAttrs,
+        "{ one = " ANSI_CYAN "1" ANSI_NORMAL "; " ANSI_FAINT "«1 attribute elided»" ANSI_NORMAL " }",
+        PrintOptions{.ansiColors = true, .maxAttrs = 1});
 
     Value vThree;
     vThree.mkInt(3);
@@ -732,12 +627,10 @@ TEST_F(ValuePrintingTests, ansiColorsAttrsElided)
     builder.insert(state.symbols.create("three"), &vThree);
     vAttrs.mkAttrs(builder.finish());
 
-    test(vAttrs,
-         "{ one = " ANSI_CYAN "1" ANSI_NORMAL "; " ANSI_FAINT "«2 attributes elided»" ANSI_NORMAL " }",
-         PrintOptions {
-             .ansiColors = true,
-             .maxAttrs = 1
-         });
+    test(
+        vAttrs,
+        "{ one = " ANSI_CYAN "1" ANSI_NORMAL "; " ANSI_FAINT "«2 attributes elided»" ANSI_NORMAL " }",
+        PrintOptions{.ansiColors = true, .maxAttrs = 1});
 }
 
 TEST_F(ValuePrintingTests, ansiColorsListElided)
@@ -751,37 +644,33 @@ TEST_F(ValuePrintingTests, ansiColorsListElided)
     vTwo.mkInt(2);
 
     {
-    auto list = state.buildList(2);
-    list.elems[0] = &vOne;
-    list.elems[1] = &vTwo;
-    Value vList;
-    vList.mkList(list);
+        auto list = state.buildList(2);
+        list.elems[0] = &vOne;
+        list.elems[1] = &vTwo;
+        Value vList;
+        vList.mkList(list);
 
-    test(vList,
-         "[ " ANSI_CYAN "1" ANSI_NORMAL " " ANSI_FAINT "«1 item elided»" ANSI_NORMAL " ]",
-         PrintOptions {
-             .ansiColors = true,
-             .maxListItems = 1
-         });
+        test(
+            vList,
+            "[ " ANSI_CYAN "1" ANSI_NORMAL " " ANSI_FAINT "«1 item elided»" ANSI_NORMAL " ]",
+            PrintOptions{.ansiColors = true, .maxListItems = 1});
     }
 
     Value vThree;
     vThree.mkInt(3);
 
     {
-    auto list = state.buildList(3);
-    list.elems[0] = &vOne;
-    list.elems[1] = &vTwo;
-    list.elems[2] = &vThree;
-    Value vList;
-    vList.mkList(list);
+        auto list = state.buildList(3);
+        list.elems[0] = &vOne;
+        list.elems[1] = &vTwo;
+        list.elems[2] = &vThree;
+        Value vList;
+        vList.mkList(list);
 
-    test(vList,
-         "[ " ANSI_CYAN "1" ANSI_NORMAL " " ANSI_FAINT "«2 items elided»" ANSI_NORMAL " ]",
-         PrintOptions {
-             .ansiColors = true,
-             .maxListItems = 1
-         });
+        test(
+            vList,
+            "[ " ANSI_CYAN "1" ANSI_NORMAL " " ANSI_FAINT "«2 items elided»" ANSI_NORMAL " ]",
+            PrintOptions{.ansiColors = true, .maxListItems = 1});
     }
 }
 

src/libexpr/attr-path.cc

@@ -1,10 +1,8 @@
 #include "nix/expr/attr-path.hh"
 #include "nix/expr/eval-inline.hh"
 
-
 namespace nix {
 
-
 static Strings parseAttrPath(std::string_view s)
 {
     Strings res;
@@ -19,18 +17,19 @@ static Strings parseAttrPath(std::string_view s)
             while (1) {
                 if (i == s.end())
                     throw ParseError("missing closing quote in selection path '%1%'", s);
-                if (*i == '"') break;
+                if (*i == '"')
+                    break;
                 cur.push_back(*i++);
             }
         } else
             cur.push_back(*i);
         ++i;
     }
-    if (!cur.empty()) res.push_back(cur);
+    if (!cur.empty())
+        res.push_back(cur);
     return res;
 }
 
-
 std::vector<Symbol> parseAttrPath(EvalState & state, std::string_view s)
 {
     std::vector<Symbol> res;
@@ -39,9 +38,8 @@ std::vector<Symbol> parseAttrPath(EvalState & state, std::string_view s)
     return res;
 }
 
-
-std::pair<Value *, PosIdx> findAlongAttrPath(EvalState & state, const std::string & attrPath,
-    Bindings & autoArgs, Value & vIn)
+std::pair<Value *, PosIdx>
+findAlongAttrPath(EvalState & state, const std::string & attrPath, Bindings & autoArgs, Value & vIn)
 {
     Strings tokens = parseAttrPath(attrPath);
 
@@ -65,10 +63,12 @@ std::pair<Value *, PosIdx> findAlongAttrPath(EvalState & state, const std::strin
         if (!attrIndex) {
 
             if (v->type() != nAttrs)
-                state.error<TypeError>(
-                    "the expression selected by the selection path '%1%' should be a set but is %2%",
-                    attrPath,
-                    showType(*v)).debugThrow();
+                state
+                    .error<TypeError>(
+                        "the expression selected by the selection path '%1%' should be a set but is %2%",
+                        attrPath,
+                        showType(*v))
+                    .debugThrow();
             if (attr.empty())
                 throw Error("empty attribute name in selection path '%1%'", attrPath);
 
@@ -79,7 +79,8 @@ std::pair<Value *, PosIdx> findAlongAttrPath(EvalState & state, const std::strin
                     attrNames.insert(std::string(state.symbols[attr.name]));
 
                 auto suggestions = Suggestions::bestMatches(attrNames, attr);
-                throw AttrPathNotFound(suggestions, "attribute '%1%' in selection path '%2%' not found", attr, attrPath);
+                throw AttrPathNotFound(
+                    suggestions, "attribute '%1%' in selection path '%2%' not found", attr, attrPath);
             }
             v = &*a->value;
             pos = a->pos;
@@ -88,23 +89,23 @@ std::pair<Value *, PosIdx> findAlongAttrPath(EvalState & state, const std::strin
         else {
 
             if (!v->isList())
-                state.error<TypeError>(
-                    "the expression selected by the selection path '%1%' should be a list but is %2%",
-                    attrPath,
-                    showType(*v)).debugThrow();
+                state
+                    .error<TypeError>(
+                        "the expression selected by the selection path '%1%' should be a list but is %2%",
+                        attrPath,
+                        showType(*v))
+                    .debugThrow();
             if (*attrIndex >= v->listSize())
                 throw AttrPathNotFound("list index %1% in selection path '%2%' is out of range", *attrIndex, attrPath);
 
             v = v->listElems()[*attrIndex];
             pos = noPos;
         }
-
     }
 
     return {v, pos};
 }
 
-
 std::pair<SourcePath, uint32_t> findPackageFilename(EvalState & state, Value & v, std::string what)
 {
     Value * v2;
@@ -118,17 +119,17 @@ std::pair<SourcePath, uint32_t> findPackageFilename(EvalState & state, Value & v
     // FIXME: is it possible to extract the Pos object instead of doing this
     //        toString + parsing?
     NixStringContext context;
-    auto path = state.coerceToPath(noPos, *v2, context, "while evaluating the 'meta.position' attribute of a derivation");
+    auto path =
+        state.coerceToPath(noPos, *v2, context, "while evaluating the 'meta.position' attribute of a derivation");
 
     auto fn = path.path.abs();
 
-    auto fail = [fn]() {
-        throw ParseError("cannot parse 'meta.position' attribute '%s'", fn);
-    };
+    auto fail = [fn]() { throw ParseError("cannot parse 'meta.position' attribute '%s'", fn); };
 
     try {
         auto colon = fn.rfind(':');
-        if (colon == std::string::npos) fail();
+        if (colon == std::string::npos)
+            fail();
         auto lineno = std::stoi(std::string(fn, colon + 1, std::string::npos));
         return {SourcePath{path.accessor, CanonPath(fn.substr(0, colon))}, lineno};
     } catch (std::invalid_argument & e) {
@@ -137,5 +138,4 @@ std::pair<SourcePath, uint32_t> findPackageFilename(EvalState & state, Value & v
     }
 }
 
-
-}
+} // namespace nix

src/libexpr/attr-set.cc

@@ -3,11 +3,8 @@
 
 #include <algorithm>
 
-
 namespace nix {
 
-
-
 /* Allocate a new array of attributes for an attribute set with a specific
    capacity. The space is implicitly reserved after the Bindings
    structure. */
@@ -22,7 +19,6 @@ Bindings * EvalState::allocBindings(size_t capacity)
     return new (allocBytes(sizeof(Bindings) + sizeof(Attr) * capacity)) Bindings((Bindings::size_t) capacity);
 }
 
-
 Value & BindingsBuilder::alloc(Symbol name, PosIdx pos)
 {
     auto value = state.allocValue();
@@ -30,24 +26,21 @@ Value & BindingsBuilder::alloc(Symbol name, PosIdx pos)
     return *value;
 }
 
-
 Value & BindingsBuilder::alloc(std::string_view name, PosIdx pos)
 {
     return alloc(state.symbols.create(name), pos);
 }
 
-
 void Bindings::sort()
 {
-    if (size_) std::sort(begin(), end());
+    if (size_)
+        std::sort(begin(), end());
 }
 
-
 Value & Value::mkAttrs(BindingsBuilder & bindings)
 {
     mkAttrs(bindings.finish());
     return *this;
 }
 
-
-}
+} // namespace nix

src/libexpr/eval-cache.cc

@@ -11,8 +11,10 @@ namespace nix::eval_cache {
 
 CachedEvalError::CachedEvalError(ref<AttrCursor> cursor, Symbol attr)
     : EvalError(cursor->root->state, "cached failure of attribute '%s'", cursor->getAttrPathStr(attr))
-    , cursor(cursor), attr(attr)
-{ }
+    , cursor(cursor)
+    , attr(attr)
+{
+}
 
 void CachedEvalError::force()
 {
@@ -25,7 +27,8 @@ void CachedEvalError::force()
     }
 
     // Shouldn't happen.
-    throw EvalError(state, "evaluation of cached failed attribute '%s' unexpectedly succeeded", cursor->getAttrPathStr(attr));
+    throw EvalError(
+        state, "evaluation of cached failed attribute '%s' unexpectedly succeeded", cursor->getAttrPathStr(attr));
 }
 
 static const char * schema = R"sql(
@@ -59,10 +62,7 @@ struct AttrDb
 
     SymbolTable & symbols;
 
-    AttrDb(
-        const StoreDirConfig & cfg,
-        const Hash & fingerprint,
-        SymbolTable & symbols)
+    AttrDb(const StoreDirConfig & cfg, const Hash & fingerprint, SymbolTable & symbols)
         : cfg(cfg)
         , _state(std::make_unique<Sync<State>>())
         , symbols(symbols)
@@ -78,17 +78,16 @@ struct AttrDb
         state->db.isCache();
         state->db.exec(schema);
 
-        state->insertAttribute.create(state->db,
-            "insert or replace into Attributes(parent, name, type, value) values (?, ?, ?, ?)");
+        state->insertAttribute.create(
+            state->db, "insert or replace into Attributes(parent, name, type, value) values (?, ?, ?, ?)");
 
-        state->insertAttributeWithContext.create(state->db,
-            "insert or replace into Attributes(parent, name, type, value, context) values (?, ?, ?, ?, ?)");
+        state->insertAttributeWithContext.create(
+            state->db, "insert or replace into Attributes(parent, name, type, value, context) values (?, ?, ?, ?, ?)");
 
-        state->queryAttribute.create(state->db,
-            "select rowid, type, value, context from Attributes where parent = ? and name = ?");
+        state->queryAttribute.create(
+            state->db, "select rowid, type, value, context from Attributes where parent = ? and name = ?");
 
-        state->queryAttributes.create(state->db,
-            "select name from Attributes where parent = ?");
+        state->queryAttributes.create(state->db, "select name from Attributes where parent = ?");
 
         state->txn = std::make_unique<SQLiteTxn>(state->db);
     }
@@ -108,7 +107,8 @@ struct AttrDb
     template<typename F>
     AttrId doSQLite(F && fun)
     {
-        if (failed) return 0;
+        if (failed)
+            return 0;
         try {
             return fun();
         } catch (SQLiteError &) {
@@ -118,116 +118,76 @@ struct AttrDb
         }
     }
 
-    AttrId setAttrs(
-        AttrKey key,
-        const std::vector<Symbol> & attrs)
+    AttrId setAttrs(AttrKey key, const std::vector<Symbol> & attrs)
     {
-        return doSQLite([&]()
-        {
+        return doSQLite([&]() {
             auto state(_state->lock());
 
-            state->insertAttribute.use()
-                (key.first)
-                (symbols[key.second])
-                (AttrType::FullAttrs)
-                (0, false).exec();
+            state->insertAttribute.use()(key.first)(symbols[key.second])(AttrType::FullAttrs) (0, false).exec();
 
             AttrId rowId = state->db.getLastInsertedRowId();
             assert(rowId);
 
             for (auto & attr : attrs)
-                state->insertAttribute.use()
-                    (rowId)
-                    (symbols[attr])
-                    (AttrType::Placeholder)
-                    (0, false).exec();
+                state->insertAttribute.use()(rowId)(symbols[attr])(AttrType::Placeholder) (0, false).exec();
 
             return rowId;
         });
     }
 
-    AttrId setString(
-        AttrKey key,
-        std::string_view s,
-        const char * * context = nullptr)
+    AttrId setString(AttrKey key, std::string_view s, const char ** context = nullptr)
     {
-        return doSQLite([&]()
-        {
+        return doSQLite([&]() {
             auto state(_state->lock());
 
             if (context) {
                 std::string ctx;
-                for (const char * * p = context; *p; ++p) {
-                    if (p != context) ctx.push_back(' ');
+                for (const char ** p = context; *p; ++p) {
+                    if (p != context)
+                        ctx.push_back(' ');
                     ctx.append(*p);
                 }
-                state->insertAttributeWithContext.use()
-                    (key.first)
-                    (symbols[key.second])
-                    (AttrType::String)
-                    (s)
-                    (ctx).exec();
+                state->insertAttributeWithContext.use()(key.first)(symbols[key.second])(AttrType::String) (s) (ctx)
+                    .exec();
             } else {
-                state->insertAttribute.use()
-                    (key.first)
-                    (symbols[key.second])
-                    (AttrType::String)
-                (s).exec();
+                state->insertAttribute.use()(key.first)(symbols[key.second])(AttrType::String) (s).exec();
             }
 
             return state->db.getLastInsertedRowId();
         });
     }
 
-    AttrId setBool(
-        AttrKey key,
-        bool b)
+    AttrId setBool(AttrKey key, bool b)
     {
-        return doSQLite([&]()
-        {
+        return doSQLite([&]() {
             auto state(_state->lock());
 
-            state->insertAttribute.use()
-                (key.first)
-                (symbols[key.second])
-                (AttrType::Bool)
-                (b ? 1 : 0).exec();
+            state->insertAttribute.use()(key.first)(symbols[key.second])(AttrType::Bool) (b ? 1 : 0).exec();
 
             return state->db.getLastInsertedRowId();
         });
     }
 
-    AttrId setInt(
-        AttrKey key,
-        int n)
+    AttrId setInt(AttrKey key, int n)
     {
-        return doSQLite([&]()
-        {
+        return doSQLite([&]() {
             auto state(_state->lock());
 
-            state->insertAttribute.use()
-                (key.first)
-                (symbols[key.second])
-                (AttrType::Int)
-                (n).exec();
+            state->insertAttribute.use()(key.first)(symbols[key.second])(AttrType::Int) (n).exec();
 
             return state->db.getLastInsertedRowId();
         });
     }
 
-    AttrId setListOfStrings(
-        AttrKey key,
-        const std::vector<std::string> & l)
+    AttrId setListOfStrings(AttrKey key, const std::vector<std::string> & l)
     {
-        return doSQLite([&]()
-        {
+        return doSQLite([&]() {
             auto state(_state->lock());
 
-            state->insertAttribute.use()
-                (key.first)
-                (symbols[key.second])
-                (AttrType::ListOfStrings)
-                (dropEmptyInitThenConcatStringsSep("\t", l)).exec();
+            state->insertAttribute
+                .use()(key.first)(symbols[key.second])(
+                    AttrType::ListOfStrings) (dropEmptyInitThenConcatStringsSep("\t", l))
+                .exec();
 
             return state->db.getLastInsertedRowId();
         });
@@ -235,15 +195,10 @@ struct AttrDb
 
     AttrId setPlaceholder(AttrKey key)
     {
-        return doSQLite([&]()
-        {
+        return doSQLite([&]() {
             auto state(_state->lock());
 
-            state->insertAttribute.use()
-                (key.first)
-                (symbols[key.second])
-                (AttrType::Placeholder)
-                (0, false).exec();
+            state->insertAttribute.use()(key.first)(symbols[key.second])(AttrType::Placeholder) (0, false).exec();
 
             return state->db.getLastInsertedRowId();
         });
@@ -251,15 +206,10 @@ struct AttrDb
 
     AttrId setMissing(AttrKey key)
     {
-        return doSQLite([&]()
-        {
+        return doSQLite([&]() {
             auto state(_state->lock());
 
-            state->insertAttribute.use()
-                (key.first)
-                (symbols[key.second])
-                (AttrType::Missing)
-                (0, false).exec();
+            state->insertAttribute.use()(key.first)(symbols[key.second])(AttrType::Missing) (0, false).exec();
 
             return state->db.getLastInsertedRowId();
         });
@@ -267,15 +217,10 @@ struct AttrDb
 
     AttrId setMisc(AttrKey key)
     {
-        return doSQLite([&]()
-        {
+        return doSQLite([&]() {
             auto state(_state->lock());
 
-            state->insertAttribute.use()
-                (key.first)
-                (symbols[key.second])
-                (AttrType::Misc)
-                (0, false).exec();
+            state->insertAttribute.use()(key.first)(symbols[key.second])(AttrType::Misc) (0, false).exec();
 
             return state->db.getLastInsertedRowId();
         });
@@ -283,15 +228,10 @@ struct AttrDb
 
     AttrId setFailed(AttrKey key)
     {
-        return doSQLite([&]()
-        {
+        return doSQLite([&]() {
             auto state(_state->lock());
 
-            state->insertAttribute.use()
-                (key.first)
-                (symbols[key.second])
-                (AttrType::Failed)
-                (0, false).exec();
+            state->insertAttribute.use()(key.first)(symbols[key.second])(AttrType::Failed) (0, false).exec();
 
             return state->db.getLastInsertedRowId();
         });
@@ -302,51 +242,49 @@ struct AttrDb
         auto state(_state->lock());
 
         auto queryAttribute(state->queryAttribute.use()(key.first)(symbols[key.second]));
-        if (!queryAttribute.next()) return {};
+        if (!queryAttribute.next())
+            return {};
 
         auto rowId = (AttrId) queryAttribute.getInt(0);
         auto type = (AttrType) queryAttribute.getInt(1);
 
         switch (type) {
-            case AttrType::Placeholder:
-                return {{rowId, placeholder_t()}};
-            case AttrType::FullAttrs: {
-                // FIXME: expensive, should separate this out.
-                std::vector<Symbol> attrs;
-                auto queryAttributes(state->queryAttributes.use()(rowId));
-                while (queryAttributes.next())
-                    attrs.emplace_back(symbols.create(queryAttributes.getStr(0)));
-                return {{rowId, attrs}};
-            }
-            case AttrType::String: {
-                NixStringContext context;
-                if (!queryAttribute.isNull(3))
-                    for (auto & s : tokenizeString<std::vector<std::string>>(queryAttribute.getStr(3), ";"))
-                        context.insert(NixStringContextElem::parse(s));
-                return {{rowId, string_t{queryAttribute.getStr(2), context}}};
-            }
-            case AttrType::Bool:
-                return {{rowId, queryAttribute.getInt(2) != 0}};
-            case AttrType::Int:
-                return {{rowId, int_t{NixInt{queryAttribute.getInt(2)}}}};
-            case AttrType::ListOfStrings:
-                return {{rowId, tokenizeString<std::vector<std::string>>(queryAttribute.getStr(2), "\t")}};
-            case AttrType::Missing:
-                return {{rowId, missing_t()}};
-            case AttrType::Misc:
-                return {{rowId, misc_t()}};
-            case AttrType::Failed:
-                return {{rowId, failed_t()}};
-            default:
-                throw Error("unexpected type in evaluation cache");
+        case AttrType::Placeholder:
+            return {{rowId, placeholder_t()}};
+        case AttrType::FullAttrs: {
+            // FIXME: expensive, should separate this out.
+            std::vector<Symbol> attrs;
+            auto queryAttributes(state->queryAttributes.use()(rowId));
+            while (queryAttributes.next())
+                attrs.emplace_back(symbols.create(queryAttributes.getStr(0)));
+            return {{rowId, attrs}};
+        }
+        case AttrType::String: {
+            NixStringContext context;
+            if (!queryAttribute.isNull(3))
+                for (auto & s : tokenizeString<std::vector<std::string>>(queryAttribute.getStr(3), ";"))
+                    context.insert(NixStringContextElem::parse(s));
+            return {{rowId, string_t{queryAttribute.getStr(2), context}}};
+        }
+        case AttrType::Bool:
+            return {{rowId, queryAttribute.getInt(2) != 0}};
+        case AttrType::Int:
+            return {{rowId, int_t{NixInt{queryAttribute.getInt(2)}}}};
+        case AttrType::ListOfStrings:
+            return {{rowId, tokenizeString<std::vector<std::string>>(queryAttribute.getStr(2), "\t")}};
+        case AttrType::Missing:
+            return {{rowId, missing_t()}};
+        case AttrType::Misc:
+            return {{rowId, misc_t()}};
+        case AttrType::Failed:
+            return {{rowId, failed_t()}};
+        default:
+            throw Error("unexpected type in evaluation cache");
         }
     }
 };
 
-static std::shared_ptr<AttrDb> makeAttrDb(
-    const StoreDirConfig & cfg,
-    const Hash & fingerprint,
-    SymbolTable & symbols)
+static std::shared_ptr<AttrDb> makeAttrDb(const StoreDirConfig & cfg, const Hash & fingerprint, SymbolTable & symbols)
 {
     try {
         return std::make_shared<AttrDb>(cfg, fingerprint, symbols);
@@ -357,9 +295,7 @@ static std::shared_ptr<AttrDb> makeAttrDb(
 }
 
 EvalCache::EvalCache(
-    std::optional<std::reference_wrapper<const Hash>> useCache,
-    EvalState & state,
-    RootLoader rootLoader)
+    std::optional<std::reference_wrapper<const Hash>> useCache, EvalState & state, RootLoader rootLoader)
     : db(useCache ? makeAttrDb(*state.store, *useCache, state.symbols) : nullptr)
     , state(state)
     , rootLoader(rootLoader)
@@ -381,11 +317,10 @@ ref<AttrCursor> EvalCache::getRoot()
 }
 
 AttrCursor::AttrCursor(
-    ref<EvalCache> root,
-    Parent parent,
-    Value * value,
-    std::optional<std::pair<AttrId, AttrValue>> && cachedValue)
-    : root(root), parent(parent), cachedValue(std::move(cachedValue))
+    ref<EvalCache> root, Parent parent, Value * value, std::optional<std::pair<AttrId, AttrValue>> && cachedValue)
+    : root(root)
+    , parent(parent)
+    , cachedValue(std::move(cachedValue))
 {
     if (value)
         _value = allocRootValue(value);
@@ -470,13 +405,11 @@ Value & AttrCursor::forceValue()
 
     if (root->db && (!cachedValue || std::get_if<placeholder_t>(&cachedValue->second))) {
         if (v.type() == nString)
-            cachedValue = {root->db->setString(getKey(), v.c_str(), v.context()),
-                           string_t{v.c_str(), {}}};
+            cachedValue = {root->db->setString(getKey(), v.c_str(), v.context()), string_t{v.c_str(), {}}};
         else if (v.type() == nPath) {
             auto path = v.path().path;
             cachedValue = {root->db->setString(getKey(), path.abs()), string_t{path.abs(), {}}};
-        }
-        else if (v.type() == nBool)
+        } else if (v.type() == nBool)
             cachedValue = {root->db->setBool(getKey(), v.boolean()), v.boolean()};
         else if (v.type() == nInt)
             cachedValue = {root->db->setInt(getKey(), v.integer().value), int_t{v.integer()}};
@@ -518,14 +451,14 @@ std::shared_ptr<AttrCursor> AttrCursor::maybeGetAttr(Symbol name)
                     else if (std::get_if<failed_t>(&attr->second))
                         throw CachedEvalError(ref(shared_from_this()), name);
                     else
-                        return std::make_shared<AttrCursor>(root,
-                            std::make_pair(ref(shared_from_this()), name), nullptr, std::move(attr));
+                        return std::make_shared<AttrCursor>(
+                            root, std::make_pair(ref(shared_from_this()), name), nullptr, std::move(attr));
                 }
                 // Incomplete attrset, so need to fall thru and
                 // evaluate to see whether 'name' exists
             } else
                 return nullptr;
-                //error<TypeError>("'%s' is not an attribute set", getAttrPathStr()).debugThrow();
+            // error<TypeError>("'%s' is not an attribute set", getAttrPathStr()).debugThrow();
         }
     }
 
@@ -533,7 +466,7 @@ std::shared_ptr<AttrCursor> AttrCursor::maybeGetAttr(Symbol name)
 
     if (v.type() != nAttrs)
         return nullptr;
-        //error<TypeError>("'%s' is not an attribute set", getAttrPathStr()).debugThrow();
+    // error<TypeError>("'%s' is not an attribute set", getAttrPathStr()).debugThrow();
 
     auto attr = v.attrs()->get(name);
 
@@ -618,17 +551,15 @@ string_t AttrCursor::getStringWithContext()
             if (auto s = std::get_if<string_t>(&cachedValue->second)) {
                 bool valid = true;
                 for (auto & c : s->second) {
-                    const StorePath & path = std::visit(overloaded {
-                        [&](const NixStringContextElem::DrvDeep & d) -> const StorePath & {
-                            return d.drvPath;
+                    const StorePath & path = std::visit(
+                        overloaded{
+                            [&](const NixStringContextElem::DrvDeep & d) -> const StorePath & { return d.drvPath; },
+                            [&](const NixStringContextElem::Built & b) -> const StorePath & {
+                                return b.drvPath->getBaseStorePath();
+                            },
+                            [&](const NixStringContextElem::Opaque & o) -> const StorePath & { return o.path; },
                         },
-                        [&](const NixStringContextElem::Built & b) -> const StorePath & {
-                            return b.drvPath->getBaseStorePath();
-                        },
-                        [&](const NixStringContextElem::Opaque & o) -> const StorePath & {
-                            return o.path;
-                        },
-                    }, c.raw);
+                        c.raw);
                     if (!root->state.store->isValidPath(path)) {
                         valid = false;
                         break;
@@ -649,8 +580,7 @@ string_t AttrCursor::getStringWithContext()
         NixStringContext context;
         copyContext(v, context);
         return {v.c_str(), std::move(context)};
-    }
-    else if (v.type() == nPath)
+    } else if (v.type() == nPath)
         return {v.path().to_string(), {}};
     else
         root->state.error<TypeError>("'%s' is not a string but %s", getAttrPathStr(), showType(v)).debugThrow();
@@ -722,7 +652,8 @@ std::vector<std::string> AttrCursor::getListOfStrings()
     std::vector<std::string> res;
 
     for (auto & elem : v.listItems())
-        res.push_back(std::string(root->state.forceStringNoCtx(*elem, noPos, "while evaluating an attribute for caching")));
+        res.push_back(
+            std::string(root->state.forceStringNoCtx(*elem, noPos, "while evaluating an attribute for caching")));
 
     if (root->db)
         cachedValue = {root->db->setListOfStrings(getKey(), res), res};
@@ -778,10 +709,10 @@ StorePath AttrCursor::forceDerivation()
            been garbage-collected. So force it to be regenerated. */
         aDrvPath->forceValue();
         if (!root->state.store->isValidPath(drvPath))
-            throw Error("don't know how to recreate store derivation '%s'!",
-                root->state.store->printStorePath(drvPath));
+            throw Error(
+                "don't know how to recreate store derivation '%s'!", root->state.store->printStorePath(drvPath));
     }
     return drvPath;
 }
 
-}
+} // namespace nix::eval_cache

src/libexpr/eval-error.cc

@@ -44,12 +44,13 @@ EvalErrorBuilder<T> & EvalErrorBuilder<T>::withFrame(const Env & env, const Expr
     // NOTE: This is abusing side-effects.
     // TODO: check compatibility with nested debugger calls.
     // TODO: What side-effects??
-    error.state.debugTraces.push_front(DebugTrace{
-        .pos = expr.getPos(),
-        .expr = expr,
-        .env = env,
-        .hint = HintFmt("Fake frame for debugging purposes"),
-        .isError = true});
+    error.state.debugTraces.push_front(
+        DebugTrace{
+            .pos = expr.getPos(),
+            .expr = expr,
+            .env = env,
+            .hint = HintFmt("Fake frame for debugging purposes"),
+            .isError = true});
     return *this;
 }
 
@@ -96,7 +97,8 @@ template<class T>
 void EvalErrorBuilder<T>::panic()
 {
     logError(error.info());
-    printError("This is a bug! An unexpected condition occurred, causing the Nix evaluator to have to stop. If you could share a reproducible example or a core dump, please open an issue at https://github.com/NixOS/nix/issues");
+    printError(
+        "This is a bug! An unexpected condition occurred, causing the Nix evaluator to have to stop. If you could share a reproducible example or a core dump, please open an issue at https://github.com/NixOS/nix/issues");
     abort();
 }
 
@@ -112,4 +114,4 @@ template class EvalErrorBuilder<InfiniteRecursionError>;
 template class EvalErrorBuilder<InvalidPathError>;
 template class EvalErrorBuilder<IFDError>;
 
-}
+} // namespace nix

src/libexpr/eval-settings.cc

@@ -19,12 +19,14 @@ Strings EvalSettings::parseNixPath(const std::string & s)
         auto start2 = p;
 
         while (p != s.end() && *p != ':') {
-            if (*p == '=') start2 = p + 1;
+            if (*p == '=')
+                start2 = p + 1;
             ++p;
         }
 
         if (p == s.end()) {
-            if (p != start) res.push_back(std::string(start, p));
+            if (p != start)
+                res.push_back(std::string(start, p));
             break;
         }
 
@@ -32,10 +34,12 @@ Strings EvalSettings::parseNixPath(const std::string & s)
             auto prefix = std::string(start2, s.end());
             if (EvalSettings::isPseudoUrl(prefix) || hasPrefix(prefix, "flake:")) {
                 ++p;
-                while (p != s.end() && *p != ':') ++p;
+                while (p != s.end() && *p != ':')
+                    ++p;
             }
             res.push_back(std::string(start, p));
-            if (p == s.end()) break;
+            if (p == s.end())
+                break;
         }
 
         ++p;
@@ -75,11 +79,14 @@ Strings EvalSettings::getDefaultNixPath()
 
 bool EvalSettings::isPseudoUrl(std::string_view s)
 {
-    if (s.compare(0, 8, "channel:") == 0) return true;
+    if (s.compare(0, 8, "channel:") == 0)
+        return true;
     size_t pos = s.find("://");
-    if (pos == std::string::npos) return false;
+    if (pos == std::string::npos)
+        return false;
     std::string scheme(s, 0, pos);
-    return scheme == "http" || scheme == "https" || scheme == "file" || scheme == "channel" || scheme == "git" || scheme == "s3" || scheme == "ssh";
+    return scheme == "http" || scheme == "https" || scheme == "file" || scheme == "channel" || scheme == "git"
+           || scheme == "s3" || scheme == "ssh";
 }
 
 std::string EvalSettings::resolvePseudoUrl(std::string_view url)
@@ -98,9 +105,7 @@ const std::string & EvalSettings::getCurrentSystem() const
 
 Path getNixDefExpr()
 {
-    return settings.useXDGBaseDirectories
-        ? getStateDir() + "/defexpr"
-        : getHome() + "/.nix-defexpr";
+    return settings.useXDGBaseDirectories ? getStateDir() + "/defexpr" : getHome() + "/.nix-defexpr";
 }
 
 } // namespace nix

src/libexpr/function-trace.cc

@@ -3,16 +3,19 @@
 
 namespace nix {
 
-FunctionCallTrace::FunctionCallTrace(const Pos & pos) : pos(pos) {
+FunctionCallTrace::FunctionCallTrace(const Pos & pos)
+    : pos(pos)
+{
     auto duration = std::chrono::high_resolution_clock::now().time_since_epoch();
     auto ns = std::chrono::duration_cast<std::chrono::nanoseconds>(duration);
     printMsg(lvlInfo, "function-trace entered %1% at %2%", pos, ns.count());
 }
 
-FunctionCallTrace::~FunctionCallTrace() {
+FunctionCallTrace::~FunctionCallTrace()
+{
     auto duration = std::chrono::high_resolution_clock::now().time_since_epoch();
     auto ns = std::chrono::duration_cast<std::chrono::nanoseconds>(duration);
     printMsg(lvlInfo, "function-trace exited %1% at %2%", pos, ns.count());
 }
 
-}
+} // namespace nix

src/libexpr/get-drvs.cc

@@ -7,18 +7,19 @@
 #include <cstring>
 #include <regex>
 
-
 namespace nix {
 
-
 PackageInfo::PackageInfo(EvalState & state, std::string attrPath, const Bindings * attrs)
-    : state(&state), attrs(attrs), attrPath(std::move(attrPath))
+    : state(&state)
+    , attrs(attrs)
+    , attrPath(std::move(attrPath))
 {
 }
 
-
 PackageInfo::PackageInfo(EvalState & state, ref<Store> store, const std::string & drvPathWithOutputs)
-    : state(&state), attrs(nullptr), attrPath("")
+    : state(&state)
+    , attrs(nullptr)
+    , attrPath("")
 {
     auto [drvPath, selectedOutputs] = parsePathWithOutputs(*store, drvPathWithOutputs);
 
@@ -31,10 +32,7 @@ PackageInfo::PackageInfo(EvalState & state, ref<Store> store, const std::string
     if (selectedOutputs.size() > 1)
         throw Error("building more than one derivation output is not supported, in '%s'", drvPathWithOutputs);
 
-    outputName =
-        selectedOutputs.empty()
-        ? getOr(drv.env, "outputName", "out")
-        : *selectedOutputs.begin();
+    outputName = selectedOutputs.empty() ? getOr(drv.env, "outputName", "out") : *selectedOutputs.begin();
 
     auto i = drv.outputs.find(outputName);
     if (i == drv.outputs.end())
@@ -44,34 +42,36 @@ PackageInfo::PackageInfo(EvalState & state, ref<Store> store, const std::string
     outPath = {output.path(*store, drv.name, outputName)};
 }
 
-
 std::string PackageInfo::queryName() const
 {
     if (name == "" && attrs) {
         auto i = attrs->find(state->sName);
-        if (i == attrs->end()) state->error<TypeError>("derivation name missing").debugThrow();
+        if (i == attrs->end())
+            state->error<TypeError>("derivation name missing").debugThrow();
         name = state->forceStringNoCtx(*i->value, noPos, "while evaluating the 'name' attribute of a derivation");
     }
     return name;
 }
 
-
 std::string PackageInfo::querySystem() const
 {
     if (system == "" && attrs) {
         auto i = attrs->find(state->sSystem);
-        system = i == attrs->end() ? "unknown" : state->forceStringNoCtx(*i->value, i->pos, "while evaluating the 'system' attribute of a derivation");
+        system =
+            i == attrs->end()
+                ? "unknown"
+                : state->forceStringNoCtx(*i->value, i->pos, "while evaluating the 'system' attribute of a derivation");
     }
     return system;
 }
 
-
 std::optional<StorePath> PackageInfo::queryDrvPath() const
 {
     if (!drvPath && attrs) {
         if (auto i = attrs->get(state->sDrvPath)) {
             NixStringContext context;
-            auto found = state->coerceToStorePath(i->pos, *i->value, context, "while evaluating the 'drvPath' attribute of a derivation");
+            auto found = state->coerceToStorePath(
+                i->pos, *i->value, context, "while evaluating the 'drvPath' attribute of a derivation");
             try {
                 found.requireDerivation();
             } catch (Error & e) {
@@ -85,7 +85,6 @@ std::optional<StorePath> PackageInfo::queryDrvPath() const
     return drvPath.value_or(std::nullopt);
 }
 
-
 StorePath PackageInfo::requireDrvPath() const
 {
     if (auto drvPath = queryDrvPath())
@@ -93,21 +92,20 @@ StorePath PackageInfo::requireDrvPath() const
     throw Error("derivation does not contain a 'drvPath' attribute");
 }
 
-
 StorePath PackageInfo::queryOutPath() const
 {
     if (!outPath && attrs) {
         auto i = attrs->find(state->sOutPath);
         NixStringContext context;
         if (i != attrs->end())
-            outPath = state->coerceToStorePath(i->pos, *i->value, context, "while evaluating the output path of a derivation");
+            outPath = state->coerceToStorePath(
+                i->pos, *i->value, context, "while evaluating the output path of a derivation");
     }
     if (!outPath)
         throw UnimplementedError("CA derivations are not yet supported");
     return *outPath;
 }
 
-
 PackageInfo::Outputs PackageInfo::queryOutputs(bool withPaths, bool onlyOutputsToInstall)
 {
     if (outputs.empty()) {
@@ -118,19 +116,25 @@ PackageInfo::Outputs PackageInfo::queryOutputs(bool withPaths, bool onlyOutputsT
 
             /* For each output... */
             for (auto elem : i->value->listItems()) {
-                std::string output(state->forceStringNoCtx(*elem, i->pos, "while evaluating the name of an output of a derivation"));
+                std::string output(
+                    state->forceStringNoCtx(*elem, i->pos, "while evaluating the name of an output of a derivation"));
 
                 if (withPaths) {
                     /* Evaluate the corresponding set. */
                     auto out = attrs->get(state->symbols.create(output));
-                    if (!out) continue; // FIXME: throw error?
+                    if (!out)
+                        continue; // FIXME: throw error?
                     state->forceAttrs(*out->value, i->pos, "while evaluating an output of a derivation");
 
                     /* And evaluate its ‘outPath’ attribute. */
                     auto outPath = out->value->attrs()->get(state->sOutPath);
-                    if (!outPath) continue; // FIXME: throw error?
+                    if (!outPath)
+                        continue; // FIXME: throw error?
                     NixStringContext context;
-                    outputs.emplace(output, state->coerceToStorePath(outPath->pos, *outPath->value, context, "while evaluating an output path of a derivation"));
+                    outputs.emplace(
+                        output,
+                        state->coerceToStorePath(
+                            outPath->pos, *outPath->value, context, "while evaluating an output path of a derivation"));
                 } else
                     outputs.emplace(output, std::nullopt);
             }
@@ -142,7 +146,8 @@ PackageInfo::Outputs PackageInfo::queryOutputs(bool withPaths, bool onlyOutputsT
         return outputs;
 
     const Attr * i;
-    if (attrs && (i = attrs->get(state->sOutputSpecified)) && state->forceBool(*i->value, i->pos, "while evaluating the 'outputSpecified' attribute of a derivation")) {
+    if (attrs && (i = attrs->get(state->sOutputSpecified))
+        && state->forceBool(*i->value, i->pos, "while evaluating the 'outputSpecified' attribute of a derivation")) {
         Outputs result;
         auto out = outputs.find(queryOutputName());
         if (out == outputs.end())
@@ -154,95 +159,103 @@ PackageInfo::Outputs PackageInfo::queryOutputs(bool withPaths, bool onlyOutputsT
     else {
         /* Check for `meta.outputsToInstall` and return `outputs` reduced to that. */
         const Value * outTI = queryMeta("outputsToInstall");
-        if (!outTI) return outputs;
+        if (!outTI)
+            return outputs;
         auto errMsg = Error("this derivation has bad 'meta.outputsToInstall'");
-            /* ^ this shows during `nix-env -i` right under the bad derivation */
-        if (!outTI->isList()) throw errMsg;
+        /* ^ this shows during `nix-env -i` right under the bad derivation */
+        if (!outTI->isList())
+            throw errMsg;
         Outputs result;
         for (auto elem : outTI->listItems()) {
-            if (elem->type() != nString) throw errMsg;
+            if (elem->type() != nString)
+                throw errMsg;
             auto out = outputs.find(elem->c_str());
-            if (out == outputs.end()) throw errMsg;
+            if (out == outputs.end())
+                throw errMsg;
             result.insert(*out);
         }
         return result;
     }
 }
 
-
 std::string PackageInfo::queryOutputName() const
 {
     if (outputName == "" && attrs) {
         auto i = attrs->get(state->sOutputName);
-        outputName = i ? state->forceStringNoCtx(*i->value, noPos, "while evaluating the output name of a derivation") : "";
+        outputName =
+            i ? state->forceStringNoCtx(*i->value, noPos, "while evaluating the output name of a derivation") : "";
     }
     return outputName;
 }
 
-
 const Bindings * PackageInfo::getMeta()
 {
-    if (meta) return meta;
-    if (!attrs) return 0;
+    if (meta)
+        return meta;
+    if (!attrs)
+        return 0;
     auto a = attrs->get(state->sMeta);
-    if (!a) return 0;
+    if (!a)
+        return 0;
     state->forceAttrs(*a->value, a->pos, "while evaluating the 'meta' attribute of a derivation");
     meta = a->value->attrs();
     return meta;
 }
 
-
 StringSet PackageInfo::queryMetaNames()
 {
     StringSet res;
-    if (!getMeta()) return res;
+    if (!getMeta())
+        return res;
     for (auto & i : *meta)
         res.emplace(state->symbols[i.name]);
     return res;
 }
 
-
 bool PackageInfo::checkMeta(Value & v)
 {
     state->forceValue(v, v.determinePos(noPos));
     if (v.type() == nList) {
         for (auto elem : v.listItems())
-            if (!checkMeta(*elem)) return false;
+            if (!checkMeta(*elem))
+                return false;
         return true;
-    }
-    else if (v.type() == nAttrs) {
-        if (v.attrs()->get(state->sOutPath)) return false;
+    } else if (v.type() == nAttrs) {
+        if (v.attrs()->get(state->sOutPath))
+            return false;
         for (auto & i : *v.attrs())
-            if (!checkMeta(*i.value)) return false;
+            if (!checkMeta(*i.value))
+                return false;
         return true;
-    }
-    else return v.type() == nInt || v.type() == nBool || v.type() == nString ||
-                v.type() == nFloat;
+    } else
+        return v.type() == nInt || v.type() == nBool || v.type() == nString || v.type() == nFloat;
 }
 
-
 Value * PackageInfo::queryMeta(const std::string & name)
 {
-    if (!getMeta()) return 0;
+    if (!getMeta())
+        return 0;
     auto a = meta->get(state->symbols.create(name));
-    if (!a || !checkMeta(*a->value)) return 0;
+    if (!a || !checkMeta(*a->value))
+        return 0;
     return a->value;
 }
 
-
 std::string PackageInfo::queryMetaString(const std::string & name)
 {
     Value * v = queryMeta(name);
-    if (!v || v->type() != nString) return "";
+    if (!v || v->type() != nString)
+        return "";
     return v->c_str();
 }
 
-
 NixInt PackageInfo::queryMetaInt(const std::string & name, NixInt def)
 {
     Value * v = queryMeta(name);
-    if (!v) return def;
-    if (v->type() == nInt) return v->integer();
+    if (!v)
+        return def;
+    if (v->type() == nInt)
+        return v->integer();
     if (v->type() == nString) {
         /* Backwards compatibility with before we had support for
            integer meta fields. */
@@ -255,8 +268,10 @@ NixInt PackageInfo::queryMetaInt(const std::string & name, NixInt def)
 NixFloat PackageInfo::queryMetaFloat(const std::string & name, NixFloat def)
 {
     Value * v = queryMeta(name);
-    if (!v) return def;
-    if (v->type() == nFloat) return v->fpoint();
+    if (!v)
+        return def;
+    if (v->type() == nFloat)
+        return v->fpoint();
     if (v->type() == nString) {
         /* Backwards compatibility with before we had support for
            float meta fields. */
@@ -266,22 +281,24 @@ NixFloat PackageInfo::queryMetaFloat(const std::string & name, NixFloat def)
     return def;
 }
 
-
 bool PackageInfo::queryMetaBool(const std::string & name, bool def)
 {
     Value * v = queryMeta(name);
-    if (!v) return def;
-    if (v->type() == nBool) return v->boolean();
+    if (!v)
+        return def;
+    if (v->type() == nBool)
+        return v->boolean();
     if (v->type() == nString) {
         /* Backwards compatibility with before we had support for
            Boolean meta fields. */
-        if (v->string_view() == "true") return true;
-        if (v->string_view() == "false") return false;
+        if (v->string_view() == "true")
+            return true;
+        if (v->string_view() == "false")
+            return false;
     }
     return def;
 }
 
-
 void PackageInfo::setMeta(const std::string & name, Value * v)
 {
     getMeta();
@@ -291,30 +308,35 @@ void PackageInfo::setMeta(const std::string & name, Value * v)
         for (auto i : *meta)
             if (i.name != sym)
                 attrs.insert(i);
-    if (v) attrs.insert(sym, v);
+    if (v)
+        attrs.insert(sym, v);
     meta = attrs.finish();
 }
 
-
 /* Cache for already considered attrsets. */
 typedef std::set<const Bindings *> Done;
 
-
 /* Evaluate value `v'.  If it evaluates to a set of type `derivation',
    then put information about it in `drvs' (unless it's already in `done').
    The result boolean indicates whether it makes sense
    for the caller to recursively search for derivations in `v'. */
-static bool getDerivation(EvalState & state, Value & v,
-    const std::string & attrPath, PackageInfos & drvs, Done & done,
+static bool getDerivation(
+    EvalState & state,
+    Value & v,
+    const std::string & attrPath,
+    PackageInfos & drvs,
+    Done & done,
     bool ignoreAssertionFailures)
 {
     try {
         state.forceValue(v, v.determinePos(noPos));
-        if (!state.isDerivation(v)) return true;
+        if (!state.isDerivation(v))
+            return true;
 
         /* Remove spurious duplicates (e.g., a set like `rec { x =
            derivation {...}; y = x;}'. */
-        if (!done.insert(v.attrs()).second) return false;
+        if (!done.insert(v.attrs()).second)
+            return false;
 
         PackageInfo drv(state, attrPath, v.attrs());
 
@@ -325,42 +347,44 @@ static bool getDerivation(EvalState & state, Value & v,
         return false;
 
     } catch (AssertionError & e) {
-        if (ignoreAssertionFailures) return false;
+        if (ignoreAssertionFailures)
+            return false;
         throw;
     }
 }
 
-
-std::optional<PackageInfo> getDerivation(EvalState & state, Value & v,
-    bool ignoreAssertionFailures)
+std::optional<PackageInfo> getDerivation(EvalState & state, Value & v, bool ignoreAssertionFailures)
 {
     Done done;
     PackageInfos drvs;
     getDerivation(state, v, "", drvs, done, ignoreAssertionFailures);
-    if (drvs.size() != 1) return {};
+    if (drvs.size() != 1)
+        return {};
     return std::move(drvs.front());
 }
 
-
 static std::string addToPath(const std::string & s1, std::string_view s2)
 {
     return s1.empty() ? std::string(s2) : s1 + "." + s2;
 }
 
-
 static std::regex attrRegex("[A-Za-z_][A-Za-z0-9-_+]*");
 
-
-static void getDerivations(EvalState & state, Value & vIn,
-    const std::string & pathPrefix, Bindings & autoArgs,
-    PackageInfos & drvs, Done & done,
+static void getDerivations(
+    EvalState & state,
+    Value & vIn,
+    const std::string & pathPrefix,
+    Bindings & autoArgs,
+    PackageInfos & drvs,
+    Done & done,
     bool ignoreAssertionFailures)
 {
     Value v;
     state.autoCallFunction(autoArgs, vIn, v);
 
     /* Process the expression. */
-    if (!getDerivation(state, v, pathPrefix, drvs, done, ignoreAssertionFailures)) ;
+    if (!getDerivation(state, v, pathPrefix, drvs, done, ignoreAssertionFailures))
+        ;
 
     else if (v.type() == nAttrs) {
 
@@ -388,8 +412,11 @@ static void getDerivations(EvalState & state, Value & vIn,
                     `recurseForDerivations = true' attribute. */
                     if (i->value->type() == nAttrs) {
                         auto j = i->value->attrs()->get(state.sRecurseForDerivations);
-                        if (j && state.forceBool(*j->value, j->pos, "while evaluating the attribute `recurseForDerivations`"))
-                            getDerivations(state, *i->value, pathPrefix2, autoArgs, drvs, done, ignoreAssertionFailures);
+                        if (j
+                            && state.forceBool(
+                                *j->value, j->pos, "while evaluating the attribute `recurseForDerivations`"))
+                            getDerivations(
+                                state, *i->value, pathPrefix2, autoArgs, drvs, done, ignoreAssertionFailures);
                     }
                 }
             } catch (Error & e) {
@@ -411,13 +438,16 @@ static void getDerivations(EvalState & state, Value & vIn,
         state.error<TypeError>("expression does not evaluate to a derivation (or a set or list of those)").debugThrow();
 }
 
-
-void getDerivations(EvalState & state, Value & v, const std::string & pathPrefix,
-    Bindings & autoArgs, PackageInfos & drvs, bool ignoreAssertionFailures)
+void getDerivations(
+    EvalState & state,
+    Value & v,
+    const std::string & pathPrefix,
+    Bindings & autoArgs,
+    PackageInfos & drvs,
+    bool ignoreAssertionFailures)
 {
     Done done;
     getDerivations(state, v, pathPrefix, autoArgs, drvs, done, ignoreAssertionFailures);
 }
 
-
-}
+} // namespace nix

src/libexpr/include/nix/expr/attr-path.hh

@@ -11,11 +11,8 @@ namespace nix {
 MakeError(AttrPathNotFound, Error);
 MakeError(NoPositionInfo, Error);
 
-std::pair<Value *, PosIdx> findAlongAttrPath(
-    EvalState & state,
-    const std::string & attrPath,
-    Bindings & autoArgs,
-    Value & vIn);
+std::pair<Value *, PosIdx>
+findAlongAttrPath(EvalState & state, const std::string & attrPath, Bindings & autoArgs, Value & vIn);
 
 /**
  * Heuristic to find the filename and lineno or a nix value.
@@ -24,4 +21,4 @@ std::pair<SourcePath, uint32_t> findPackageFilename(EvalState & state, Value & v
 
 std::vector<Symbol> parseAttrPath(EvalState & state, std::string_view s);
 
-}
+} // namespace nix

src/libexpr/include/nix/expr/attr-set.hh

@@ -8,7 +8,6 @@
 
 namespace nix {
 
-
 class EvalState;
 struct Value;
 
@@ -25,15 +24,19 @@ struct Attr
     PosIdx pos;
     Value * value;
     Attr(Symbol name, Value * value, PosIdx pos = noPos)
-        : name(name), pos(pos), value(value) { };
-    Attr() { };
-    auto operator <=> (const Attr & a) const
+        : name(name)
+        , pos(pos)
+        , value(value) {};
+    Attr() {};
+
+    auto operator<=>(const Attr & a) const
     {
         return name <=> a.name;
     }
 };
 
-static_assert(sizeof(Attr) == 2 * sizeof(uint32_t) + sizeof(Value *),
+static_assert(
+    sizeof(Attr) == 2 * sizeof(uint32_t) + sizeof(Value *),
     "performance of the evaluator is highly sensitive to the size of Attr. "
     "avoid introducing any padding into Attr if at all possible, and do not "
     "introduce new fields that need not be present for almost every instance.");
@@ -54,13 +57,24 @@ private:
     size_t size_, capacity_;
     Attr attrs[0];
 
-    Bindings(size_t capacity) : size_(0), capacity_(capacity) { }
+    Bindings(size_t capacity)
+        : size_(0)
+        , capacity_(capacity)
+    {
+    }
+
     Bindings(const Bindings & bindings) = delete;
 
 public:
-    size_t size() const { return size_; }
+    size_t size() const
+    {
+        return size_;
+    }
 
-    bool empty() const { return !size_; }
+    bool empty() const
+    {
+        return !size_;
+    }
 
     typedef Attr * iterator;
 
@@ -76,7 +90,8 @@ public:
     {
         Attr key(name, 0);
         const_iterator i = std::lower_bound(begin(), end(), key);
-        if (i != end() && i->name == name) return i;
+        if (i != end() && i->name == name)
+            return i;
         return end();
     }
 
@@ -84,15 +99,30 @@ public:
     {
         Attr key(name, 0);
         const_iterator i = std::lower_bound(begin(), end(), key);
-        if (i != end() && i->name == name) return &*i;
+        if (i != end() && i->name == name)
+            return &*i;
         return nullptr;
     }
 
-    iterator begin() { return &attrs[0]; }
-    iterator end() { return &attrs[size_]; }
+    iterator begin()
+    {
+        return &attrs[0];
+    }
 
-    const_iterator begin() const { return &attrs[0]; }
-    const_iterator end() const { return &attrs[size_]; }
+    iterator end()
+    {
+        return &attrs[size_];
+    }
+
+    const_iterator begin() const
+    {
+        return &attrs[0];
+    }
+
+    const_iterator end() const
+    {
+        return &attrs[size_];
+    }
 
     Attr & operator[](size_t pos)
     {
@@ -106,7 +136,10 @@ public:
 
     void sort();
 
-    size_t capacity() const { return capacity_; }
+    size_t capacity() const
+    {
+        return capacity_;
+    }
 
     /**
      * Returns the attributes in lexicographically sorted order.
@@ -143,8 +176,10 @@ public:
     EvalState & state;
 
     BindingsBuilder(EvalState & state, Bindings * bindings)
-        : bindings(bindings), state(state)
-    { }
+        : bindings(bindings)
+        , state(state)
+    {
+    }
 
     void insert(Symbol name, Value * value, PosIdx pos = noPos)
     {
@@ -191,4 +226,4 @@ public:
     friend struct ExprAttrs;
 };
 
-}
+} // namespace nix

src/libexpr/include/nix/expr/eval-cache.hh

@@ -43,10 +43,7 @@ class EvalCache : public std::enable_shared_from_this<EvalCache>
 
 public:
 
-    EvalCache(
-        std::optional<std::reference_wrapper<const Hash>> useCache,
-        EvalState & state,
-        RootLoader rootLoader);
+    EvalCache(std::optional<std::reference_wrapper<const Hash>> useCache, EvalState & state, RootLoader rootLoader);
 
     ref<AttrCursor> getRoot();
 };
@@ -63,11 +60,23 @@ enum AttrType {
     Int = 8,
 };
 
-struct placeholder_t {};
-struct missing_t {};
-struct misc_t {};
-struct failed_t {};
-struct int_t { NixInt x; };
+struct placeholder_t
+{};
+
+struct missing_t
+{};
+
+struct misc_t
+{};
+
+struct failed_t
+{};
+
+struct int_t
+{
+    NixInt x;
+};
+
 typedef uint64_t AttrId;
 typedef std::pair<AttrId, Symbol> AttrKey;
 typedef std::pair<std::string, NixStringContext> string_t;
@@ -81,8 +90,8 @@ typedef std::variant<
     failed_t,
     bool,
     int_t,
-    std::vector<std::string>
-    > AttrValue;
+    std::vector<std::string>>
+    AttrValue;
 
 class AttrCursor : public std::enable_shared_from_this<AttrCursor>
 {
@@ -161,4 +170,4 @@ public:
     StorePath forceDerivation();
 };
 
-}
+} // namespace nix::eval_cache

src/libexpr/include/nix/expr/eval-error.hh

@@ -60,6 +60,7 @@ struct InvalidPathError : public EvalError
 {
 public:
     Path path;
+
     InvalidPathError(EvalState & state, const Path & path)
         : EvalError(state, "path '%s' is not valid", path)
     {
@@ -119,4 +120,4 @@ public:
     [[gnu::noinline, gnu::noreturn]] void panic();
 };
 
-}
+} // namespace nix

src/libexpr/include/nix/expr/eval-inline.hh

@@ -23,11 +23,11 @@ inline void * allocBytes(size_t n)
 #else
     p = calloc(n, 1);
 #endif
-    if (!p) throw std::bad_alloc();
+    if (!p)
+        throw std::bad_alloc();
     return p;
 }
 
-
 [[gnu::always_inline]]
 Value * EvalState::allocValue()
 {
@@ -38,7 +38,8 @@ Value * EvalState::allocValue()
        have to explicitly clear the first word of every object we take. */
     if (!*valueAllocCache) {
         *valueAllocCache = GC_malloc_many(sizeof(Value));
-        if (!*valueAllocCache) throw std::bad_alloc();
+        if (!*valueAllocCache)
+            throw std::bad_alloc();
     }
 
     /* GC_NEXT is a convenience macro for accessing the first word of an object.
@@ -54,7 +55,6 @@ Value * EvalState::allocValue()
     return (Value *) p;
 }
 
-
 [[gnu::always_inline]]
 Env & EvalState::allocEnv(size_t size)
 {
@@ -68,7 +68,8 @@ Env & EvalState::allocEnv(size_t size)
         /* see allocValue for explanations. */
         if (!*env1AllocCache) {
             *env1AllocCache = GC_malloc_many(sizeof(Env) + sizeof(Value *));
-            if (!*env1AllocCache) throw std::bad_alloc();
+            if (!*env1AllocCache)
+                throw std::bad_alloc();
         }
 
         void * p = *env1AllocCache;
@@ -84,7 +85,6 @@ Env & EvalState::allocEnv(size_t size)
     return *env;
 }
 
-
 [[gnu::always_inline]]
 void EvalState::forceValue(Value & v, const PosIdx pos)
 {
@@ -94,7 +94,7 @@ void EvalState::forceValue(Value & v, const PosIdx pos)
         Expr * expr = v.payload.thunk.expr;
         try {
             v.mkBlackhole();
-            //checkInterrupt();
+            // checkInterrupt();
             if (env) [[likely]]
                 expr->eval(*this, *env, v);
             else
@@ -104,54 +104,47 @@ void EvalState::forceValue(Value & v, const PosIdx pos)
             tryFixupBlackHolePos(v, pos);
             throw;
         }
-    }
-    else if (v.isApp())
+    } else if (v.isApp())
         callFunction(*v.payload.app.left, *v.payload.app.right, v, pos);
 }
 
-
 [[gnu::always_inline]]
 inline void EvalState::forceAttrs(Value & v, const PosIdx pos, std::string_view errorCtx)
 {
     forceAttrs(v, [&]() { return pos; }, errorCtx);
 }
 
-
-template <typename Callable>
+template<typename Callable>
 [[gnu::always_inline]]
 inline void EvalState::forceAttrs(Value & v, Callable getPos, std::string_view errorCtx)
 {
     PosIdx pos = getPos();
     forceValue(v, pos);
     if (v.type() != nAttrs) {
-        error<TypeError>(
-            "expected a set but found %1%: %2%",
-            showType(v),
-            ValuePrinter(*this, v, errorPrintOptions)
-        ).withTrace(pos, errorCtx).debugThrow();
+        error<TypeError>("expected a set but found %1%: %2%", showType(v), ValuePrinter(*this, v, errorPrintOptions))
+            .withTrace(pos, errorCtx)
+            .debugThrow();
     }
 }
 
-
 [[gnu::always_inline]]
 inline void EvalState::forceList(Value & v, const PosIdx pos, std::string_view errorCtx)
 {
     forceValue(v, pos);
     if (!v.isList()) {
-        error<TypeError>(
-            "expected a list but found %1%: %2%",
-            showType(v),
-            ValuePrinter(*this, v, errorPrintOptions)
-        ).withTrace(pos, errorCtx).debugThrow();
+        error<TypeError>("expected a list but found %1%: %2%", showType(v), ValuePrinter(*this, v, errorPrintOptions))
+            .withTrace(pos, errorCtx)
+            .debugThrow();
     }
 }
 
 [[gnu::always_inline]]
-inline CallDepth EvalState::addCallDepth(const PosIdx pos) {
+inline CallDepth EvalState::addCallDepth(const PosIdx pos)
+{
     if (callDepth > settings.maxCallDepth)
         error<EvalBaseError>("stack overflow; max-call-depth exceeded").atPos(pos).debugThrow();
 
     return CallDepth(callDepth);
 };
 
-}
+} // namespace nix

src/libexpr/include/nix/expr/eval-settings.hh

@@ -73,7 +73,9 @@ struct EvalSettings : Config
     )"};
 
     Setting<Strings> nixPath{
-        this, {}, "nix-path",
+        this,
+        {},
+        "nix-path",
         R"(
           List of search paths to use for [lookup path](@docroot@/language/constructs/lookup-path.md) resolution.
           This setting determines the value of
@@ -106,10 +108,14 @@ struct EvalSettings : Config
           > If [restricted evaluation](@docroot@/command-ref/conf-file.md#conf-restrict-eval) is enabled, the default value is empty.
           >
           > If [pure evaluation](#conf-pure-eval) is enabled, `builtins.nixPath` *always* evaluates to the empty list `[ ]`.
-        )", {}, false};
+        )",
+        {},
+        false};
 
     Setting<std::string> currentSystem{
-        this, "", "eval-system",
+        this,
+        "",
+        "eval-system",
         R"(
           This option defines
           [`builtins.currentSystem`](@docroot@/language/builtins.md#builtins-currentSystem)
@@ -129,7 +135,9 @@ struct EvalSettings : Config
     const std::string & getCurrentSystem() const;
 
     Setting<bool> restrictEval{
-        this, false, "restrict-eval",
+        this,
+        false,
+        "restrict-eval",
         R"(
           If set to `true`, the Nix evaluator will not allow access to any
           files outside of
@@ -138,7 +146,10 @@ struct EvalSettings : Config
           [`allowed-uris`](@docroot@/command-ref/conf-file.md#conf-allowed-uris).
         )"};
 
-    Setting<bool> pureEval{this, false, "pure-eval",
+    Setting<bool> pureEval{
+        this,
+        false,
+        "pure-eval",
         R"(
           Pure evaluation mode ensures that the result of Nix expressions is fully determined by explicitly declared inputs, and not influenced by external state:
 
@@ -148,11 +159,12 @@ struct EvalSettings : Config
             - [`builtins.currentTime`](@docroot@/language/builtins.md#builtins-currentTime)
             - [`builtins.nixPath`](@docroot@/language/builtins.md#builtins-nixPath)
             - [`builtins.storePath`](@docroot@/language/builtins.md#builtins-storePath)
-        )"
-        };
+        )"};
 
     Setting<bool> enableImportFromDerivation{
-        this, true, "allow-import-from-derivation",
+        this,
+        true,
+        "allow-import-from-derivation",
         R"(
           By default, Nix allows [Import from Derivation](@docroot@/language/import-from-derivation.md).
 
@@ -162,7 +174,10 @@ struct EvalSettings : Config
           regardless of the state of the store.
         )"};
 
-    Setting<Strings> allowedUris{this, {}, "allowed-uris",
+    Setting<Strings> allowedUris{
+        this,
+        {},
+        "allowed-uris",
         R"(
           A list of URI prefixes to which access is allowed in restricted
           evaluation mode. For example, when set to
@@ -175,7 +190,10 @@ struct EvalSettings : Config
           - or the prefix is a URI scheme ended by a colon `:` and the URI has the same scheme.
         )"};
 
-    Setting<bool> traceFunctionCalls{this, false, "trace-function-calls",
+    Setting<bool> traceFunctionCalls{
+        this,
+        false,
+        "trace-function-calls",
         R"(
           If set to `true`, the Nix evaluator will trace every function call.
           Nix will print a log message at the "vomit" level for every function
@@ -193,26 +211,38 @@ struct EvalSettings : Config
           `flamegraph.pl`.
         )"};
 
-    Setting<bool> useEvalCache{this, true, "eval-cache",
+    Setting<bool> useEvalCache{
+        this,
+        true,
+        "eval-cache",
         R"(
             Whether to use the flake evaluation cache.
             Certain commands won't have to evaluate when invoked for the second time with a particular version of a flake.
             Intermediate results are not cached.
         )"};
 
-    Setting<bool> ignoreExceptionsDuringTry{this, false, "ignore-try",
+    Setting<bool> ignoreExceptionsDuringTry{
+        this,
+        false,
+        "ignore-try",
         R"(
           If set to true, ignore exceptions inside 'tryEval' calls when evaluating nix expressions in
           debug mode (using the --debugger flag). By default the debugger will pause on all exceptions.
         )"};
 
-    Setting<bool> traceVerbose{this, false, "trace-verbose",
+    Setting<bool> traceVerbose{
+        this,
+        false,
+        "trace-verbose",
         "Whether `builtins.traceVerbose` should trace its first argument when evaluated."};
 
-    Setting<unsigned int> maxCallDepth{this, 10000, "max-call-depth",
-        "The maximum function call depth to allow before erroring."};
+    Setting<unsigned int> maxCallDepth{
+        this, 10000, "max-call-depth", "The maximum function call depth to allow before erroring."};
 
-    Setting<bool> builtinsTraceDebugger{this, false, "debugger-on-trace",
+    Setting<bool> builtinsTraceDebugger{
+        this,
+        false,
+        "debugger-on-trace",
         R"(
           If set to true and the `--debugger` flag is given, the following functions
           will enter the debugger like [`builtins.break`](@docroot@/language/builtins.md#builtins-break).
@@ -225,7 +255,10 @@ struct EvalSettings : Config
           This is useful for debugging warnings in third-party Nix code.
         )"};
 
-    Setting<bool> builtinsDebuggerOnWarn{this, false, "debugger-on-warn",
+    Setting<bool> builtinsDebuggerOnWarn{
+        this,
+        false,
+        "debugger-on-warn",
         R"(
           If set to true and the `--debugger` flag is given, [`builtins.warn`](@docroot@/language/builtins.md#builtins-warn)
           will enter the debugger like [`builtins.break`](@docroot@/language/builtins.md#builtins-break).
@@ -235,7 +268,10 @@ struct EvalSettings : Config
           Use [`debugger-on-trace`](#conf-debugger-on-trace) to also enter the debugger on legacy warnings that are logged with [`builtins.trace`](@docroot@/language/builtins.md#builtins-trace).
         )"};
 
-    Setting<bool> builtinsAbortOnWarn{this, false, "abort-on-warn",
+    Setting<bool> builtinsAbortOnWarn{
+        this,
+        false,
+        "abort-on-warn",
         R"(
           If set to true, [`builtins.warn`](@docroot@/language/builtins.md#builtins-warn) will throw an error when logging a warning.
 
@@ -254,4 +290,4 @@ struct EvalSettings : Config
  */
 Path getNixDefExpr();
 
-}
+} // namespace nix