Format .nix files

This does not include any automation for the release branch, but
is based on the configuration of https://github.com/NixOS/nix/pull/12349

    pre-commit run -a nixfmt-rfc-style

default.nix

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

doc/manual/generate-builtins.nix

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

doc/manual/generate-manpage.nix

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

doc/manual/generate-settings.nix

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

doc/manual/generate-store-info.nix

@@ -1,6 +1,20 @@
 let
-  inherit (builtins) attrNames listToAttrs concatStringsSep readFile replaceStrings;
-  inherit (import <nix/utils.nix>) optionalString filterAttrs trim squash toLower unique indent;
+  inherit (builtins)
+    attrNames
+    listToAttrs
+    concatStringsSep
+    readFile
+    replaceStrings
+    ;
+  inherit (import <nix/utils.nix>)
+    optionalString
+    filterAttrs
+    trim
+    squash
+    toLower
+    unique
+    indent
+    ;
   showSettings = import <nix/generate-settings.nix>;
 in
 
@@ -14,7 +28,13 @@ in
 
 let
 
-  showStore = { name, slug }: { settings, doc, experimentalFeature }:
+  showStore =
+    { name, slug }:
+    {
+      settings,
+      doc,
+      experimentalFeature,
+    }:
     let
       result = squash ''
         # ${name}
@@ -25,7 +45,10 @@ let
 
         ## Settings
 
-        ${showSettings { prefix = "store-${slug}"; inherit inlineHTML; } settings}
+        ${showSettings {
+          prefix = "store-${slug}";
+          inherit inlineHTML;
+        } settings}
       '';
 
       experimentalFeatureNote = optionalString (experimentalFeature != null) ''
@@ -43,15 +66,15 @@ let
         > extra-experimental-features = ${experimentalFeature}
         > ```
       '';
-    in result;
+    in
+    result;
 
-  storesList = map
-    (name: rec {
-      inherit name;
-      slug = replaceStrings [ " " ] [ "-" ] (toLower name);
-      filename = "${slug}.md";
-      page = showStore { inherit name slug; } storeInfo.${name};
-    })
-    (attrNames storeInfo);
+  storesList = map (name: rec {
+    inherit name;
+    slug = replaceStrings [ " " ] [ "-" ] (toLower name);
+    filename = "${slug}.md";
+    page = showStore { inherit name slug; } storeInfo.${name};
+  }) (attrNames storeInfo);
 
-in storesList
+in
+storesList

doc/manual/generate-store-types.nix

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

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

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

doc/manual/generate-xp-features.nix

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

doc/manual/utils.nix

@@ -11,10 +11,15 @@ rec {
 
   concatStrings = concatStringsSep "";
 
-  attrsToList = a:
-    map (name: { inherit name; value = a.${name}; }) (builtins.attrNames a);
+  attrsToList =
+    a:
+    map (name: {
+      inherit name;
+      value = a.${name};
+    }) (builtins.attrNames a);
 
-  replaceStringsRec = from: to: string:
+  replaceStringsRec =
+    from: to: string:
     # recursively replace occurrences of `from` with `to` within `string`
     # example:
     #     replaceStringRec "--" "-" "hello-----world"
@@ -22,16 +27,18 @@ rec {
     let
       replaced = replaceStrings [ from ] [ to ] string;
     in
-      if replaced == string then string else replaceStringsRec from to replaced;
+    if replaced == string then string else replaceStringsRec from to replaced;
 
   toLower = replaceStrings upperChars lowerChars;
 
   squash = replaceStringsRec "\n\n\n" "\n\n";
 
-  trim = string:
+  trim =
+    string:
     # trim trailing spaces and squash non-leading spaces
     let
-      trimLine = line:
+      trimLine =
+        line:
         let
           # separate leading spaces from the rest
           parts = split "(^ *)" line;
@@ -39,19 +46,30 @@ rec {
           rest = elemAt parts 2;
           # drop trailing spaces
           body = head (split " *$" rest);
-        in spaces + replaceStringsRec "  " " " body;
-    in concatStringsSep "\n" (map trimLine (splitLines string));
+        in
+        spaces + replaceStringsRec "  " " " body;
+    in
+    concatStringsSep "\n" (map trimLine (splitLines string));
 
   # FIXME: O(n^2)
-  unique = foldl' (acc: e: if elem e acc then acc else acc ++ [ e ]) [];
+  unique = foldl' (acc: e: if elem e acc then acc else acc ++ [ e ]) [ ];
 
   nameValuePair = name: value: { inherit name value; };
 
-  filterAttrs = pred: set:
-    listToAttrs (concatMap (name: let v = set.${name}; in if pred name v then [(nameValuePair name v)] else []) (attrNames set));
+  filterAttrs =
+    pred: set:
+    listToAttrs (
+      concatMap (
+        name:
+        let
+          v = set.${name};
+        in
+        if pred name v then [ (nameValuePair name v) ] else [ ]
+      ) (attrNames set)
+    );
 
   optionalString = cond: string: if cond then string else "";
 
-  indent = prefix: s:
-    concatStringsSep "\n" (map (x: if x == "" then x else "${prefix}${x}") (splitLines s));
+  indent =
+    prefix: s: concatStringsSep "\n" (map (x: if x == "" then x else "${prefix}${x}") (splitLines s));
 }

docker.nix

@@ -1,70 +1,72 @@
-{ pkgs ? import <nixpkgs> { }
-, lib ? pkgs.lib
-, name ? "nix"
-, tag ? "latest"
-, bundleNixpkgs ? true
-, channelName ? "nixpkgs"
-, channelURL ? "https://nixos.org/channels/nixpkgs-unstable"
-, extraPkgs ? []
-, maxLayers ? 100
-, nixConf ? {}
-, flake-registry ? null
+{
+  pkgs ? import <nixpkgs> { },
+  lib ? pkgs.lib,
+  name ? "nix",
+  tag ? "latest",
+  bundleNixpkgs ? true,
+  channelName ? "nixpkgs",
+  channelURL ? "https://nixos.org/channels/nixpkgs-unstable",
+  extraPkgs ? [ ],
+  maxLayers ? 100,
+  nixConf ? { },
+  flake-registry ? null,
 }:
 let
-  defaultPkgs = with pkgs; [
-    nix
-    bashInteractive
-    coreutils-full
-    gnutar
-    gzip
-    gnugrep
-    which
-    curl
-    less
-    wget
-    man
-    cacert.out
-    findutils
-    iana-etc
-    git
-    openssh
-  ] ++ extraPkgs;
+  defaultPkgs =
+    with pkgs;
+    [
+      nix
+      bashInteractive
+      coreutils-full
+      gnutar
+      gzip
+      gnugrep
+      which
+      curl
+      less
+      wget
+      man
+      cacert.out
+      findutils
+      iana-etc
+      git
+      openssh
+    ]
+    ++ extraPkgs;
 
-  users = {
+  users =
+    {
 
-    root = {
-      uid = 0;
-      shell = "${pkgs.bashInteractive}/bin/bash";
-      home = "/root";
-      gid = 0;
-      groups = [ "root" ];
-      description = "System administrator";
-    };
+      root = {
+        uid = 0;
+        shell = "${pkgs.bashInteractive}/bin/bash";
+        home = "/root";
+        gid = 0;
+        groups = [ "root" ];
+        description = "System administrator";
+      };
 
-    nobody = {
-      uid = 65534;
-      shell = "${pkgs.shadow}/bin/nologin";
-      home = "/var/empty";
-      gid = 65534;
-      groups = [ "nobody" ];
-      description = "Unprivileged account (don't use!)";
-    };
+      nobody = {
+        uid = 65534;
+        shell = "${pkgs.shadow}/bin/nologin";
+        home = "/var/empty";
+        gid = 65534;
+        groups = [ "nobody" ];
+        description = "Unprivileged account (don't use!)";
+      };
 
-  } // lib.listToAttrs (
-    map
-      (
-        n: {
-          name = "nixbld${toString n}";
-          value = {
-            uid = 30000 + n;
-            gid = 30000;
-            groups = [ "nixbld" ];
-            description = "Nix build user ${toString n}";
-          };
-        }
-      )
-      (lib.lists.range 1 32)
-  );
+    }
+    // lib.listToAttrs (
+      map (n: {
+        name = "nixbld${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;
@@ -74,24 +76,20 @@ let
 
   userToPasswd = (
     k:
-    { uid
-    , gid ? 65534
-    , home ? "/var/empty"
-    , description ? ""
-    , shell ? "/bin/false"
-    , groups ? [ ]
-    }: "${k}:x:${toString uid}:${toString gid}:${description}:${home}:${shell}"
-  );
-  passwdContents = (
-    lib.concatStringsSep "\n"
-      (lib.attrValues (lib.mapAttrs userToPasswd users))
+    {
+      uid,
+      gid ? 65534,
+      home ? "/var/empty",
+      description ? "",
+      shell ? "/bin/false",
+      groups ? [ ],
+    }:
+    "${k}:x:${toString uid}:${toString gid}:${description}:${home}:${shell}"
   );
+  passwdContents = (lib.concatStringsSep "\n" (lib.attrValues (lib.mapAttrs userToPasswd users)));
 
   userToShadow = k: { ... }: "${k}:!:1::::::";
-  shadowContents = (
-    lib.concatStringsSep "\n"
-      (lib.attrValues (lib.mapAttrs userToShadow users))
-  );
+  shadowContents = (lib.concatStringsSep "\n" (lib.attrValues (lib.mapAttrs userToShadow users)));
 
   # Map groups to members
   # {
@@ -101,42 +99,35 @@ let
     let
       # Create a flat list of user/group mappings
       mappings = (
-        builtins.foldl'
-          (
-            acc: user:
-              let
-                groups = users.${user}.groups or [ ];
-              in
-              acc ++ map
-                (group: {
-                  inherit user group;
-                })
-                groups
-          )
-          [ ]
-          (lib.attrNames users)
+        builtins.foldl' (
+          acc: user:
+          let
+            groups = users.${user}.groups or [ ];
+          in
+          acc
+          ++ map (group: {
+            inherit user group;
+          }) groups
+        ) [ ] (lib.attrNames users)
       );
     in
-    (
-      builtins.foldl'
-        (
-          acc: v: acc // {
-            ${v.group} = acc.${v.group} or [ ] ++ [ v.user ];
-          }
-        )
-        { }
-        mappings)
+    (builtins.foldl' (
+      acc: v:
+      acc
+      // {
+        ${v.group} = acc.${v.group} or [ ] ++ [ v.user ];
+      }
+    ) { } mappings)
   );
 
-  groupToGroup = k: { gid }:
+  groupToGroup =
+    k:
+    { gid }:
     let
       members = groupMemberMap.${k} or [ ];
     in
     "${k}:x:${toString gid}:${lib.concatStringsSep "," members}";
-  groupContents = (
-    lib.concatStringsSep "\n"
-      (lib.attrValues (lib.mapAttrs groupToGroup groups))
-  );
+  groupContents = (lib.concatStringsSep "\n" (lib.attrValues (lib.mapAttrs groupToGroup groups)));
 
   defaultNixConf = {
     sandbox = "false";
@@ -144,11 +135,17 @@ let
     trusted-public-keys = [ "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=" ];
   };
 
-  nixConfContents = (lib.concatStringsSep "\n" (lib.mapAttrsFlatten (n: v:
-    let
-      vStr = if builtins.isList v then lib.concatStringsSep " " v else v;
-    in
-      "${n} = ${vStr}") (defaultNixConf // nixConf))) + "\n";
+  nixConfContents =
+    (lib.concatStringsSep "\n" (
+      lib.mapAttrsFlatten (
+        n: v:
+        let
+          vStr = if builtins.isList v then lib.concatStringsSep " " v else v;
+        in
+        "${n} = ${vStr}"
+      ) (defaultNixConf // nixConf)
+    ))
+    + "\n";
 
   baseSystem =
     let
@@ -167,21 +164,29 @@ let
       manifest = pkgs.buildPackages.runCommand "manifest.nix" { } ''
         cat > $out <<EOF
         [
-        ${lib.concatStringsSep "\n" (builtins.map (drv: let
-          outputs = drv.outputsToInstall or [ "out" ];
-        in ''
-          {
-            ${lib.concatStringsSep "\n" (builtins.map (output: ''
-              ${output} = { outPath = "${lib.getOutput output drv}"; };
-            '') outputs)}
-            outputs = [ ${lib.concatStringsSep " " (builtins.map (x: "\"${x}\"") outputs)} ];
-            name = "${drv.name}";
-            outPath = "${drv}";
-            system = "${drv.system}";
-            type = "derivation";
-            meta = { };
-          }
-        '') defaultPkgs)}
+        ${lib.concatStringsSep "\n" (
+          builtins.map (
+            drv:
+            let
+              outputs = drv.outputsToInstall or [ "out" ];
+            in
+            ''
+              {
+                ${lib.concatStringsSep "\n" (
+                  builtins.map (output: ''
+                    ${output} = { outPath = "${lib.getOutput output drv}"; };
+                  '') outputs
+                )}
+                outputs = [ ${lib.concatStringsSep " " (builtins.map (x: "\"${x}\"") outputs)} ];
+                name = "${drv.name}";
+                outPath = "${drv}";
+                system = "${drv.system}";
+                type = "derivation";
+                meta = { };
+              }
+            ''
+          ) defaultPkgs
+        )}
         ]
         EOF
       '';
@@ -190,16 +195,22 @@ let
         cp -a ${rootEnv}/* $out/
         ln -s ${manifest} $out/manifest.nix
       '';
-      flake-registry-path = if (flake-registry == null) then
-        null
-      else if (builtins.readFileType (toString flake-registry)) == "directory" then
-        "${flake-registry}/flake-registry.json"
-      else
-        flake-registry;
+      flake-registry-path =
+        if (flake-registry == null) then
+          null
+        else if (builtins.readFileType (toString flake-registry)) == "directory" then
+          "${flake-registry}/flake-registry.json"
+        else
+          flake-registry;
     in
     pkgs.runCommand "base-system"
       {
-        inherit passwdContents groupContents shadowContents nixConfContents;
+        inherit
+          passwdContents
+          groupContents
+          shadowContents
+          nixConfContents
+          ;
         passAsFile = [
           "passwdContents"
           "groupContents"
@@ -208,62 +219,66 @@ let
         ];
         allowSubstitutes = false;
         preferLocalBuild = true;
-      } (''
-      env
-      set -x
-      mkdir -p $out/etc
+      }
+      (
+        ''
+          env
+          set -x
+          mkdir -p $out/etc
 
-      mkdir -p $out/etc/ssl/certs
-      ln -s /nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt $out/etc/ssl/certs
+          mkdir -p $out/etc/ssl/certs
+          ln -s /nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt $out/etc/ssl/certs
 
-      cat $passwdContentsPath > $out/etc/passwd
-      echo "" >> $out/etc/passwd
+          cat $passwdContentsPath > $out/etc/passwd
+          echo "" >> $out/etc/passwd
 
-      cat $groupContentsPath > $out/etc/group
-      echo "" >> $out/etc/group
+          cat $groupContentsPath > $out/etc/group
+          echo "" >> $out/etc/group
 
-      cat $shadowContentsPath > $out/etc/shadow
-      echo "" >> $out/etc/shadow
+          cat $shadowContentsPath > $out/etc/shadow
+          echo "" >> $out/etc/shadow
 
-      mkdir -p $out/usr
-      ln -s /nix/var/nix/profiles/share $out/usr/
+          mkdir -p $out/usr
+          ln -s /nix/var/nix/profiles/share $out/usr/
 
-      mkdir -p $out/nix/var/nix/gcroots
+          mkdir -p $out/nix/var/nix/gcroots
 
-      mkdir $out/tmp
+          mkdir $out/tmp
 
-      mkdir -p $out/var/tmp
+          mkdir -p $out/var/tmp
 
-      mkdir -p $out/etc/nix
-      cat $nixConfContentsPath > $out/etc/nix/nix.conf
+          mkdir -p $out/etc/nix
+          cat $nixConfContentsPath > $out/etc/nix/nix.conf
 
-      mkdir -p $out/root
-      mkdir -p $out/nix/var/nix/profiles/per-user/root
+          mkdir -p $out/root
+          mkdir -p $out/nix/var/nix/profiles/per-user/root
 
-      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/root/.nix-profile
+          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/root/.nix-profile
 
-      ln -s ${channel} $out/nix/var/nix/profiles/per-user/root/channels-1-link
-      ln -s /nix/var/nix/profiles/per-user/root/channels-1-link $out/nix/var/nix/profiles/per-user/root/channels
+          ln -s ${channel} $out/nix/var/nix/profiles/per-user/root/channels-1-link
+          ln -s /nix/var/nix/profiles/per-user/root/channels-1-link $out/nix/var/nix/profiles/per-user/root/channels
 
-      mkdir -p $out/root/.nix-defexpr
-      ln -s /nix/var/nix/profiles/per-user/root/channels $out/root/.nix-defexpr/channels
-      echo "${channelURL} ${channelName}" > $out/root/.nix-channels
+          mkdir -p $out/root/.nix-defexpr
+          ln -s /nix/var/nix/profiles/per-user/root/channels $out/root/.nix-defexpr/channels
+          echo "${channelURL} ${channelName}" > $out/root/.nix-channels
 
-      mkdir -p $out/bin $out/usr/bin
-      ln -s ${pkgs.coreutils}/bin/env $out/usr/bin/env
-      ln -s ${pkgs.bashInteractive}/bin/bash $out/bin/sh
+          mkdir -p $out/bin $out/usr/bin
+          ln -s ${pkgs.coreutils}/bin/env $out/usr/bin/env
+          ln -s ${pkgs.bashInteractive}/bin/bash $out/bin/sh
 
-    '' + (lib.optionalString (flake-registry-path != null) ''
-      nixCacheDir="/root/.cache/nix"
-      mkdir -p $out$nixCacheDir
-      globalFlakeRegistryPath="$nixCacheDir/flake-registry.json"
-      ln -s ${flake-registry-path} $out$globalFlakeRegistryPath
-      mkdir -p $out/nix/var/nix/gcroots/auto
-      rootName=$(${pkgs.nix}/bin/nix --extra-experimental-features nix-command hash file --type sha1 --base32 <(echo -n $globalFlakeRegistryPath))
-      ln -s $globalFlakeRegistryPath $out/nix/var/nix/gcroots/auto/$rootName
-    ''));
+        ''
+        + (lib.optionalString (flake-registry-path != null) ''
+          nixCacheDir="/root/.cache/nix"
+          mkdir -p $out$nixCacheDir
+          globalFlakeRegistryPath="$nixCacheDir/flake-registry.json"
+          ln -s ${flake-registry-path} $out$globalFlakeRegistryPath
+          mkdir -p $out/nix/var/nix/gcroots/auto
+          rootName=$(${pkgs.nix}/bin/nix --extra-experimental-features nix-command hash file --type sha1 --base32 <(echo -n $globalFlakeRegistryPath))
+          ln -s $globalFlakeRegistryPath $out/nix/var/nix/gcroots/auto/$rootName
+        '')
+      );
 
 in
 pkgs.dockerTools.buildLayeredImageWithNixDb {
@@ -285,15 +300,19 @@ pkgs.dockerTools.buildLayeredImageWithNixDb {
     Cmd = [ "/root/.nix-profile/bin/bash" ];
     Env = [
       "USER=root"
-      "PATH=${lib.concatStringsSep ":" [
-        "/root/.nix-profile/bin"
-        "/nix/var/nix/profiles/default/bin"
-        "/nix/var/nix/profiles/default/sbin"
-      ]}"
-      "MANPATH=${lib.concatStringsSep ":" [
-        "/root/.nix-profile/share/man"
-        "/nix/var/nix/profiles/default/share/man"
-      ]}"
+      "PATH=${
+        lib.concatStringsSep ":" [
+          "/root/.nix-profile/bin"
+          "/nix/var/nix/profiles/default/bin"
+          "/nix/var/nix/profiles/default/sbin"
+        ]
+      }"
+      "MANPATH=${
+        lib.concatStringsSep ":" [
+          "/root/.nix-profile/share/man"
+          "/nix/var/nix/profiles/default/share/man"
+        ]
+      }"
       "SSL_CERT_FILE=/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt"
       "GIT_SSL_CAINFO=/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt"
       "NIX_SSL_CERT_FILE=/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt"

flake.nix

@@ -4,8 +4,14 @@
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
   inputs.nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
   inputs.nixpkgs-23-11.url = "github:NixOS/nixpkgs/a62e6edd6d5e1fa0329b8653c801147986f8d446";
-  inputs.flake-compat = { url = "github:edolstra/flake-compat"; flake = false; };
-  inputs.libgit2 = { url = "github:libgit2/libgit2/v1.8.1"; flake = false; };
+  inputs.flake-compat = {
+    url = "github:edolstra/flake-compat";
+    flake = false;
+  };
+  inputs.libgit2 = {
+    url = "github:libgit2/libgit2/v1.8.1";
+    flake = false;
+  };
 
   # dev tooling
   inputs.flake-parts.url = "github:hercules-ci/flake-parts";
@@ -18,8 +24,14 @@
   inputs.git-hooks-nix.inputs.flake-compat.follows = "";
   inputs.git-hooks-nix.inputs.gitignore.follows = "";
 
-  outputs = inputs@{ self, nixpkgs, nixpkgs-regression, libgit2, ... }:
-
+  outputs =
+    inputs@{
+      self,
+      nixpkgs,
+      nixpkgs-regression,
+      libgit2,
+      ...
+    }:
 
     let
       inherit (nixpkgs) lib;
@@ -28,14 +40,23 @@
 
       version = lib.fileContents ./.version + versionSuffix;
       versionSuffix =
-        if officialRelease
-        then ""
-        else "pre${builtins.substring 0 8 (self.lastModifiedDate or self.lastModified or "19700101")}_${self.shortRev or "dirty"}";
+        if officialRelease then
+          ""
+        else
+          "pre${
+            builtins.substring 0 8 (self.lastModifiedDate or self.lastModified or "19700101")
+          }_${self.shortRev or "dirty"}";
 
       linux32BitSystems = [ "i686-linux" ];
-      linux64BitSystems = [ "x86_64-linux" "aarch64-linux" ];
+      linux64BitSystems = [
+        "x86_64-linux"
+        "aarch64-linux"
+      ];
       linuxSystems = linux32BitSystems ++ linux64BitSystems;
-      darwinSystems = [ "x86_64-darwin" "aarch64-darwin" ];
+      darwinSystems = [
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
       systems = linuxSystems ++ darwinSystems;
 
       crossSystems = [
@@ -64,62 +85,76 @@
         (Provided that the names are unique.)
 
         See https://nixos.org/manual/nixpkgs/stable/index.html#function-library-lib.attrsets.concatMapAttrs
-       */
+      */
       flatMapAttrs = attrs: f: lib.concatMapAttrs f attrs;
 
       forAllSystems = lib.genAttrs systems;
 
       forAllCrossSystems = lib.genAttrs crossSystems;
 
-      forAllStdenvs = f:
-        lib.listToAttrs
-          (map
-            (stdenvName: {
-              name = "${stdenvName}Packages";
-              value = f stdenvName;
-            })
-            stdenvs);
-
+      forAllStdenvs =
+        f:
+        lib.listToAttrs (
+          map (stdenvName: {
+            name = "${stdenvName}Packages";
+            value = f stdenvName;
+          }) stdenvs
+        );
 
       # We don't apply flake-parts to the whole flake so that non-development attributes
       # load without fetching any development inputs.
       devFlake = inputs.flake-parts.lib.mkFlake { inherit inputs; } {
         imports = [ ./maintainers/flake-module.nix ];
         systems = lib.subtractLists crossSystems systems;
-        perSystem = { system, ... }: {
-          _module.args.pkgs = nixpkgsFor.${system}.native;
-        };
+        perSystem =
+          { system, ... }:
+          {
+            _module.args.pkgs = nixpkgsFor.${system}.native;
+          };
       };
 
       # Memoize nixpkgs for different platforms for efficiency.
-      nixpkgsFor = forAllSystems
-        (system: let
-          make-pkgs = crossSystem: stdenv: import nixpkgs {
-            localSystem = {
-              inherit system;
+      nixpkgsFor = forAllSystems (
+        system:
+        let
+          make-pkgs =
+            crossSystem: stdenv:
+            import nixpkgs {
+              localSystem = {
+                inherit system;
+              };
+              crossSystem =
+                if crossSystem == null then
+                  null
+                else
+                  {
+                    config = crossSystem;
+                  }
+                  // lib.optionalAttrs (crossSystem == "x86_64-unknown-freebsd13") {
+                    useLLVM = true;
+                  };
+              overlays = [
+                (overlayFor (p: p.${stdenv}))
+              ];
             };
-            crossSystem = if crossSystem == null then null else {
-              config = crossSystem;
-            } // lib.optionalAttrs (crossSystem == "x86_64-unknown-freebsd13") {
-              useLLVM = true;
-            };
-            overlays = [
-              (overlayFor (p: p.${stdenv}))
-            ];
-          };
           stdenvs = forAllStdenvs (make-pkgs null);
           native = stdenvs.stdenvPackages;
-        in {
+        in
+        {
           inherit stdenvs native;
           static = native.pkgsStatic;
           cross = forAllCrossSystems (crossSystem: make-pkgs crossSystem "stdenv");
-        });
+        }
+      );
 
-      binaryTarball = nix: pkgs: pkgs.callPackage ./scripts/binary-tarball.nix {
-        inherit nix;
-      };
+      binaryTarball =
+        nix: pkgs:
+        pkgs.callPackage ./scripts/binary-tarball.nix {
+          inherit nix;
+        };
 
-      overlayFor = getStdenv: final: prev:
+      overlayFor =
+        getStdenv: final: prev:
         let
           stdenv = getStdenv final;
         in
@@ -134,10 +169,12 @@
 
           # The dependencies are in their own scope, so that they don't have to be
           # in Nixpkgs top level `pkgs` or `nixComponents`.
-          nixDependencies = lib.makeScope final.newScope (import ./packaging/dependencies.nix {
-            inherit inputs stdenv versionSuffix;
-            pkgs = final;
-          });
+          nixDependencies = lib.makeScope final.newScope (
+            import ./packaging/dependencies.nix {
+              inherit inputs stdenv versionSuffix;
+              pkgs = final;
+            }
+          );
 
           nix = final.nixComponents.nix;
 
@@ -149,13 +186,20 @@
           # See https://github.com/NixOS/nixpkgs/pull/214409
           # Remove when fixed in this flake's nixpkgs
           pre-commit =
-            if prev.stdenv.hostPlatform.system == "i686-linux"
-            then (prev.pre-commit.override (o: { dotnet-sdk = ""; })).overridePythonAttrs (o: { doCheck = false; })
-            else prev.pre-commit;
+            if prev.stdenv.hostPlatform.system == "i686-linux" then
+              (prev.pre-commit.override (o: {
+                dotnet-sdk = "";
+              })).overridePythonAttrs
+                (o: {
+                  doCheck = false;
+                })
+            else
+              prev.pre-commit;
 
         };
 
-    in {
+    in
+    {
       # A Nixpkgs overlay that overrides the 'nix' and
       # 'nix-perl-bindings' packages.
       overlays.default = overlayFor (p: p.stdenv);
@@ -173,53 +217,69 @@
           ;
       };
 
-      checks = forAllSystems (system: {
-        installerScriptForGHA = self.hydraJobs.installerScriptForGHA.${system};
-        installTests = self.hydraJobs.installTests.${system};
-        nixpkgsLibTests = self.hydraJobs.tests.nixpkgsLibTests.${system};
-        rl-next =
-          let pkgs = nixpkgsFor.${system}.native;
-          in pkgs.buildPackages.runCommand "test-rl-next-release-notes" { } ''
-          LANG=C.UTF-8 ${pkgs.changelog-d}/bin/changelog-d ${./doc/manual/rl-next} >$out
-        '';
-        repl-completion = nixpkgsFor.${system}.native.callPackage ./tests/repl-completion.nix { };
-      } // (lib.optionalAttrs (builtins.elem system linux64BitSystems)) {
-        dockerImage = self.hydraJobs.dockerImage.${system};
-      } // (lib.optionalAttrs (!(builtins.elem system linux32BitSystems))) {
-        # Some perl dependencies are broken on i686-linux.
-        # Since the support is only best-effort there, disable the perl
-        # bindings
+      checks = forAllSystems (
+        system:
+        {
+          installerScriptForGHA = self.hydraJobs.installerScriptForGHA.${system};
+          installTests = self.hydraJobs.installTests.${system};
+          nixpkgsLibTests = self.hydraJobs.tests.nixpkgsLibTests.${system};
+          rl-next =
+            let
+              pkgs = nixpkgsFor.${system}.native;
+            in
+            pkgs.buildPackages.runCommand "test-rl-next-release-notes" { } ''
+              LANG=C.UTF-8 ${pkgs.changelog-d}/bin/changelog-d ${./doc/manual/rl-next} >$out
+            '';
+          repl-completion = nixpkgsFor.${system}.native.callPackage ./tests/repl-completion.nix { };
+        }
+        // (lib.optionalAttrs (builtins.elem system linux64BitSystems)) {
+          dockerImage = self.hydraJobs.dockerImage.${system};
+        }
+        // (lib.optionalAttrs (!(builtins.elem system linux32BitSystems))) {
+          # Some perl dependencies are broken on i686-linux.
+          # Since the support is only best-effort there, disable the perl
+          # bindings
 
-        # Temporarily disabled because GitHub Actions OOM issues. Once
-        # the old build system is gone and we are back to one build
-        # system, we should reenable this.
-        #perlBindings = self.hydraJobs.perlBindings.${system};
-      }
-      # Add "passthru" tests
-      // flatMapAttrs ({
-          "" = nixpkgsFor.${system}.native;
-        } // lib.optionalAttrs (! nixpkgsFor.${system}.native.stdenv.hostPlatform.isDarwin) {
-          # TODO: enable static builds for darwin, blocked on:
-          #       https://github.com/NixOS/nixpkgs/issues/320448
-          "static-" = nixpkgsFor.${system}.static;
-        })
-        (nixpkgsPrefix: nixpkgs:
-          flatMapAttrs nixpkgs.nixComponents
-            (pkgName: pkg:
-              flatMapAttrs pkg.tests or {}
-              (testName: test: {
-                "${nixpkgsPrefix}${pkgName}-${testName}" = test;
-              })
+          # Temporarily disabled because GitHub Actions OOM issues. Once
+          # the old build system is gone and we are back to one build
+          # system, we should reenable this.
+          #perlBindings = self.hydraJobs.perlBindings.${system};
+        }
+        # Add "passthru" tests
+        //
+          flatMapAttrs
+            (
+              {
+                "" = nixpkgsFor.${system}.native;
+              }
+              // lib.optionalAttrs (!nixpkgsFor.${system}.native.stdenv.hostPlatform.isDarwin) {
+                # TODO: enable static builds for darwin, blocked on:
+                #       https://github.com/NixOS/nixpkgs/issues/320448
+                "static-" = nixpkgsFor.${system}.static;
+              }
             )
-        )
-      // devFlake.checks.${system} or {}
+            (
+              nixpkgsPrefix: nixpkgs:
+              flatMapAttrs nixpkgs.nixComponents (
+                pkgName: pkg:
+                flatMapAttrs pkg.tests or { } (
+                  testName: test: {
+                    "${nixpkgsPrefix}${pkgName}-${testName}" = test;
+                  }
+                )
+              )
+            )
+        // devFlake.checks.${system} or { }
       );
 
-      packages = forAllSystems (system:
-        { # Here we put attributes that map 1:1 into packages.<system>, ie
+      packages = forAllSystems (
+        system:
+        {
+          # Here we put attributes that map 1:1 into packages.<system>, ie
           # for which we don't apply the full build matrix such as cross or static.
           inherit (nixpkgsFor.${system}.native)
-            changelog-d;
+            changelog-d
+            ;
           default = self.packages.${system}.nix;
           binaryTarball = self.hydraJobs.binaryTarball.${system};
           installerScriptForGHA = self.hydraJobs.installerScriptForGHA.${system};
@@ -227,148 +287,191 @@
           nix-external-api-docs = nixpkgsFor.${system}.native.nixComponents.nix-external-api-docs;
         }
         # We need to flatten recursive attribute sets of derivations to pass `flake check`.
-        // flatMapAttrs
-          { # Components we'll iterate over in the upcoming lambda
-            "nix" = { };
-            # Temporarily disabled because GitHub Actions OOM issues. Once
-            # the old build system is gone and we are back to one build
-            # system, we should reenable these.
-            #"nix-util" = { };
-            #"nix-store" = { };
-            #"nix-fetchers" = { };
-          }
-          (pkgName: {}: {
-              # These attributes go right into `packages.<system>`.
-              "${pkgName}" = nixpkgsFor.${system}.native.nixComponents.${pkgName};
-              "${pkgName}-static" = nixpkgsFor.${system}.static.nixComponents.${pkgName};
-            }
-            // flatMapAttrs (lib.genAttrs crossSystems (_: { })) (crossSystem: {}: {
-              # These attributes go right into `packages.<system>`.
-              "${pkgName}-${crossSystem}" = nixpkgsFor.${system}.cross.${crossSystem}.nixComponents.${pkgName};
-            })
-            // flatMapAttrs (lib.genAttrs stdenvs (_: { })) (stdenvName: {}: {
-              # These attributes go right into `packages.<system>`.
-              "${pkgName}-${stdenvName}" = nixpkgsFor.${system}.stdenvs."${stdenvName}Packages".nixComponents.${pkgName};
-            })
-          )
-        // lib.optionalAttrs (builtins.elem system linux64BitSystems) {
-        dockerImage =
-          let
-            pkgs = nixpkgsFor.${system}.native;
-            image = import ./docker.nix { inherit pkgs; tag = version; };
-          in
-          pkgs.runCommand
-            "docker-image-tarball-${version}"
-            { meta.description = "Docker image with Nix for ${system}"; }
-            ''
-              mkdir -p $out/nix-support
-              image=$out/image.tar.gz
-              ln -s ${image} $image
-              echo "file binary-dist $image" >> $out/nix-support/hydra-build-products
-            '';
-      });
-
-      devShells = let
-        makeShell = pkgs: stdenv: (pkgs.nix.override { inherit stdenv; forDevShell = true; }).overrideAttrs (attrs:
-        let
-          modular = devFlake.getSystem stdenv.buildPlatform.system;
-          transformFlag = prefix: flag:
-            assert builtins.isString flag;
-            let
-              rest = builtins.substring 2 (builtins.stringLength flag) flag;
-            in
-              "-D${prefix}:${rest}";
-          havePerl = stdenv.buildPlatform == stdenv.hostPlatform && stdenv.hostPlatform.isUnix;
-          ignoreCrossFile = flags: builtins.filter (flag: !(lib.strings.hasInfix "cross-file" flag)) flags;
-        in {
-          pname = "shell-for-" + attrs.pname;
-
-          # Remove the version suffix to avoid unnecessary attempts to substitute in nix develop
-          version = lib.fileContents ./.version;
-          name = attrs.pname;
-
-          installFlags = "sysconfdir=$(out)/etc";
-          shellHook = ''
-            PATH=$prefix/bin:$PATH
-            unset PYTHONPATH
-            export MANPATH=$out/share/man:$MANPATH
-
-            # Make bash completion work.
-            XDG_DATA_DIRS+=:$out/share
-          '';
-
-          # We use this shell with the local checkout, not unpackPhase.
-          src = null;
-
-          env = {
-            # Needed for Meson to find Boost.
-            # https://github.com/NixOS/nixpkgs/issues/86131.
-            BOOST_INCLUDEDIR = "${lib.getDev pkgs.nixDependencies.boost}/include";
-            BOOST_LIBRARYDIR = "${lib.getLib pkgs.nixDependencies.boost}/lib";
-            # For `make format`, to work without installing pre-commit
-            _NIX_PRE_COMMIT_HOOKS_CONFIG =
-              "${(pkgs.formats.yaml { }).generate "pre-commit-config.yaml" modular.pre-commit.settings.rawConfig}";
-          };
-
-          mesonFlags =
-            map (transformFlag "libutil") (ignoreCrossFile pkgs.nixComponents.nix-util.mesonFlags)
-            ++ map (transformFlag "libstore") (ignoreCrossFile pkgs.nixComponents.nix-store.mesonFlags)
-            ++ map (transformFlag "libfetchers") (ignoreCrossFile pkgs.nixComponents.nix-fetchers.mesonFlags)
-            ++ lib.optionals havePerl (map (transformFlag "perl") (ignoreCrossFile pkgs.nixComponents.nix-perl-bindings.mesonFlags))
-            ++ map (transformFlag "libexpr") (ignoreCrossFile pkgs.nixComponents.nix-expr.mesonFlags)
-            ++ map (transformFlag "libcmd") (ignoreCrossFile pkgs.nixComponents.nix-cmd.mesonFlags)
-            ;
-
-          nativeBuildInputs = attrs.nativeBuildInputs or []
-            ++ pkgs.nixComponents.nix-util.nativeBuildInputs
-            ++ pkgs.nixComponents.nix-store.nativeBuildInputs
-            ++ pkgs.nixComponents.nix-fetchers.nativeBuildInputs
-            ++ lib.optionals havePerl pkgs.nixComponents.nix-perl-bindings.nativeBuildInputs
-            ++ pkgs.nixComponents.nix-internal-api-docs.nativeBuildInputs
-            ++ pkgs.nixComponents.nix-external-api-docs.nativeBuildInputs
-            ++ lib.optional
-              (!stdenv.buildPlatform.canExecute stdenv.hostPlatform
-                 # Hack around https://github.com/nixos/nixpkgs/commit/bf7ad8cfbfa102a90463433e2c5027573b462479
-                 && !(stdenv.hostPlatform.isWindows && stdenv.buildPlatform.isDarwin)
-                 && stdenv.hostPlatform.emulatorAvailable pkgs.buildPackages
-                 && lib.meta.availableOn stdenv.buildPlatform (stdenv.hostPlatform.emulator pkgs.buildPackages))
-              pkgs.buildPackages.mesonEmulatorHook
-            ++ [
-              pkgs.buildPackages.cmake
-              pkgs.buildPackages.shellcheck
-              pkgs.buildPackages.changelog-d
-              modular.pre-commit.settings.package
-              (pkgs.writeScriptBin "pre-commit-hooks-install"
-                modular.pre-commit.settings.installationScript)
-            ]
-            # 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) pkgs.buildPackages.clang-tools;
-
-          buildInputs = attrs.buildInputs or []
-            ++ [
-              pkgs.gtest
-              pkgs.rapidcheck
-            ]
-            ++ lib.optional havePerl pkgs.perl
-            ;
-        });
-        in
-        forAllSystems (system:
-          let
-            makeShells = prefix: pkgs:
-              lib.mapAttrs'
-              (k: v: lib.nameValuePair "${prefix}-${k}" v)
-              (forAllStdenvs (stdenvName: makeShell pkgs pkgs.${stdenvName}));
-          in
-            (makeShells "native" nixpkgsFor.${system}.native) //
-            (lib.optionalAttrs (!nixpkgsFor.${system}.native.stdenv.isDarwin)
-              (makeShells "static" nixpkgsFor.${system}.static) //
-              (forAllCrossSystems (crossSystem: let pkgs = nixpkgsFor.${system}.cross.${crossSystem}; in makeShell pkgs pkgs.stdenv))) //
+        //
+          flatMapAttrs
             {
-              default = self.devShells.${system}.native-stdenvPackages;
+              # Components we'll iterate over in the upcoming lambda
+              "nix" = { };
+              # Temporarily disabled because GitHub Actions OOM issues. Once
+              # the old build system is gone and we are back to one build
+              # system, we should reenable these.
+              #"nix-util" = { };
+              #"nix-store" = { };
+              #"nix-fetchers" = { };
             }
+            (
+              pkgName:
+              { }:
+              {
+                # These attributes go right into `packages.<system>`.
+                "${pkgName}" = nixpkgsFor.${system}.native.nixComponents.${pkgName};
+                "${pkgName}-static" = nixpkgsFor.${system}.static.nixComponents.${pkgName};
+              }
+              // flatMapAttrs (lib.genAttrs crossSystems (_: { })) (
+                crossSystem:
+                { }:
+                {
+                  # These attributes go right into `packages.<system>`.
+                  "${pkgName}-${crossSystem}" = nixpkgsFor.${system}.cross.${crossSystem}.nixComponents.${pkgName};
+                }
+              )
+              // flatMapAttrs (lib.genAttrs stdenvs (_: { })) (
+                stdenvName:
+                { }:
+                {
+                  # These attributes go right into `packages.<system>`.
+                  "${pkgName}-${stdenvName}" =
+                    nixpkgsFor.${system}.stdenvs."${stdenvName}Packages".nixComponents.${pkgName};
+                }
+              )
+            )
+        // lib.optionalAttrs (builtins.elem system linux64BitSystems) {
+          dockerImage =
+            let
+              pkgs = nixpkgsFor.${system}.native;
+              image = import ./docker.nix {
+                inherit pkgs;
+                tag = version;
+              };
+            in
+            pkgs.runCommand "docker-image-tarball-${version}"
+              { meta.description = "Docker image with Nix for ${system}"; }
+              ''
+                mkdir -p $out/nix-support
+                image=$out/image.tar.gz
+                ln -s ${image} $image
+                echo "file binary-dist $image" >> $out/nix-support/hydra-build-products
+              '';
+        }
+      );
+
+      devShells =
+        let
+          makeShell =
+            pkgs: stdenv:
+            (pkgs.nix.override {
+              inherit stdenv;
+              forDevShell = true;
+            }).overrideAttrs
+              (
+                attrs:
+                let
+                  modular = devFlake.getSystem stdenv.buildPlatform.system;
+                  transformFlag =
+                    prefix: flag:
+                    assert builtins.isString flag;
+                    let
+                      rest = builtins.substring 2 (builtins.stringLength flag) flag;
+                    in
+                    "-D${prefix}:${rest}";
+                  havePerl = stdenv.buildPlatform == stdenv.hostPlatform && stdenv.hostPlatform.isUnix;
+                  ignoreCrossFile = flags: builtins.filter (flag: !(lib.strings.hasInfix "cross-file" flag)) flags;
+                in
+                {
+                  pname = "shell-for-" + attrs.pname;
+
+                  # Remove the version suffix to avoid unnecessary attempts to substitute in nix develop
+                  version = lib.fileContents ./.version;
+                  name = attrs.pname;
+
+                  installFlags = "sysconfdir=$(out)/etc";
+                  shellHook = ''
+                    PATH=$prefix/bin:$PATH
+                    unset PYTHONPATH
+                    export MANPATH=$out/share/man:$MANPATH
+
+                    # Make bash completion work.
+                    XDG_DATA_DIRS+=:$out/share
+                  '';
+
+                  # We use this shell with the local checkout, not unpackPhase.
+                  src = null;
+
+                  env = {
+                    # Needed for Meson to find Boost.
+                    # https://github.com/NixOS/nixpkgs/issues/86131.
+                    BOOST_INCLUDEDIR = "${lib.getDev pkgs.nixDependencies.boost}/include";
+                    BOOST_LIBRARYDIR = "${lib.getLib pkgs.nixDependencies.boost}/lib";
+                    # For `make format`, to work without installing pre-commit
+                    _NIX_PRE_COMMIT_HOOKS_CONFIG = "${(pkgs.formats.yaml { }).generate "pre-commit-config.yaml"
+                      modular.pre-commit.settings.rawConfig
+                    }";
+                  };
+
+                  mesonFlags =
+                    map (transformFlag "libutil") (ignoreCrossFile pkgs.nixComponents.nix-util.mesonFlags)
+                    ++ map (transformFlag "libstore") (ignoreCrossFile pkgs.nixComponents.nix-store.mesonFlags)
+                    ++ map (transformFlag "libfetchers") (ignoreCrossFile pkgs.nixComponents.nix-fetchers.mesonFlags)
+                    ++ lib.optionals havePerl (
+                      map (transformFlag "perl") (ignoreCrossFile pkgs.nixComponents.nix-perl-bindings.mesonFlags)
+                    )
+                    ++ map (transformFlag "libexpr") (ignoreCrossFile pkgs.nixComponents.nix-expr.mesonFlags)
+                    ++ map (transformFlag "libcmd") (ignoreCrossFile pkgs.nixComponents.nix-cmd.mesonFlags);
+
+                  nativeBuildInputs =
+                    attrs.nativeBuildInputs or [ ]
+                    ++ pkgs.nixComponents.nix-util.nativeBuildInputs
+                    ++ pkgs.nixComponents.nix-store.nativeBuildInputs
+                    ++ pkgs.nixComponents.nix-fetchers.nativeBuildInputs
+                    ++ lib.optionals havePerl pkgs.nixComponents.nix-perl-bindings.nativeBuildInputs
+                    ++ pkgs.nixComponents.nix-internal-api-docs.nativeBuildInputs
+                    ++ pkgs.nixComponents.nix-external-api-docs.nativeBuildInputs
+                    ++ lib.optional (
+                      !stdenv.buildPlatform.canExecute stdenv.hostPlatform
+                      # Hack around https://github.com/nixos/nixpkgs/commit/bf7ad8cfbfa102a90463433e2c5027573b462479
+                      && !(stdenv.hostPlatform.isWindows && stdenv.buildPlatform.isDarwin)
+                      && stdenv.hostPlatform.emulatorAvailable pkgs.buildPackages
+                      && lib.meta.availableOn stdenv.buildPlatform (stdenv.hostPlatform.emulator pkgs.buildPackages)
+                    ) pkgs.buildPackages.mesonEmulatorHook
+                    ++ [
+                      pkgs.buildPackages.cmake
+                      pkgs.buildPackages.shellcheck
+                      pkgs.buildPackages.changelog-d
+                      modular.pre-commit.settings.package
+                      (pkgs.writeScriptBin "pre-commit-hooks-install" modular.pre-commit.settings.installationScript)
+                    ]
+                    # 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
+                    ) pkgs.buildPackages.clang-tools;
+
+                  buildInputs =
+                    attrs.buildInputs or [ ]
+                    ++ [
+                      pkgs.gtest
+                      pkgs.rapidcheck
+                    ]
+                    ++ lib.optional havePerl pkgs.perl;
+                }
+              );
+        in
+        forAllSystems (
+          system:
+          let
+            makeShells =
+              prefix: pkgs:
+              lib.mapAttrs' (k: v: lib.nameValuePair "${prefix}-${k}" v) (
+                forAllStdenvs (stdenvName: makeShell pkgs pkgs.${stdenvName})
+              );
+          in
+          (makeShells "native" nixpkgsFor.${system}.native)
+          // (
+            lib.optionalAttrs (!nixpkgsFor.${system}.native.stdenv.isDarwin) (
+              makeShells "static" nixpkgsFor.${system}.static
+            )
+            // (forAllCrossSystems (
+              crossSystem:
+              let
+                pkgs = nixpkgsFor.${system}.cross.${crossSystem};
+              in
+              makeShell pkgs pkgs.stdenv
+            ))
+          )
+          // {
+            default = self.devShells.${system}.native-stdenvPackages;
+          }
         );
-  };
+    };
 }

package.nix

@@ -1,115 +1,116 @@
-{ lib
-, stdenv
-, releaseTools
-, autoconf-archive
-, autoreconfHook
-, aws-sdk-cpp
-, boehmgc
-, nlohmann_json
-, bison
-, boost
-, brotli
-, bzip2
-, curl
-, editline
-, readline
-, flex
-, git
-, gtest
-, jq
-, libarchive
-, libcpuid
-, libgit2
-, libseccomp
-, libsodium
-, man
-, darwin
-, lowdown
-, mdbook
-, mdbook-linkcheck
-, mercurial
-, openssh
-, openssl
-, pkg-config
-, rapidcheck
-, sqlite
-, toml11
-, unixtools
-, xz
+{
+  lib,
+  stdenv,
+  releaseTools,
+  autoconf-archive,
+  autoreconfHook,
+  aws-sdk-cpp,
+  boehmgc,
+  nlohmann_json,
+  bison,
+  boost,
+  brotli,
+  bzip2,
+  curl,
+  editline,
+  readline,
+  flex,
+  git,
+  gtest,
+  jq,
+  libarchive,
+  libcpuid,
+  libgit2,
+  libseccomp,
+  libsodium,
+  man,
+  darwin,
+  lowdown,
+  mdbook,
+  mdbook-linkcheck,
+  mercurial,
+  openssh,
+  openssl,
+  pkg-config,
+  rapidcheck,
+  sqlite,
+  toml11,
+  unixtools,
+  xz,
 
-, busybox-sandbox-shell ? null
+  busybox-sandbox-shell ? null,
 
-# Configuration Options
-#:
-# This probably seems like too many degrees of freedom, but it
-# faithfully reflects how the underlying configure + make build system
-# work. The top-level flake.nix will choose useful combinations of these
-# options to CI.
+  # Configuration Options
+  #:
+  # This probably seems like too many degrees of freedom, but it
+  # faithfully reflects how the underlying configure + make build system
+  # work. The top-level flake.nix will choose useful combinations of these
+  # options to CI.
 
-, pname ? "nix"
+  pname ? "nix",
 
-, versionSuffix ? ""
+  versionSuffix ? "",
 
-# Whether to build Nix. Useful to skip for tasks like testing existing pre-built versions of Nix
-, doBuild ? true
+  # Whether to build Nix. Useful to skip for tasks like testing existing pre-built versions of Nix
+  doBuild ? true,
 
-# Run the unit tests as part of the build. See `installUnitTests` for an
-# alternative to this.
-, doCheck ? __forDefaults.canRunInstalled
+  # Run the unit tests as part of the build. See `installUnitTests` for an
+  # alternative to this.
+  doCheck ? __forDefaults.canRunInstalled,
 
-# Run the functional tests as part of the build.
-, doInstallCheck ? test-client != null || __forDefaults.canRunInstalled
+  # Run the functional tests as part of the build.
+  doInstallCheck ? test-client != null || __forDefaults.canRunInstalled,
 
-# Check test coverage of Nix. Probably want to use with at least
-# one of `doCHeck` or `doInstallCheck` enabled.
-, withCoverageChecks ? false
+  # Check test coverage of Nix. Probably want to use with at least
+  # one of `doCHeck` or `doInstallCheck` enabled.
+  withCoverageChecks ? false,
 
-# Whether to build the regular manual
-, enableManual ? __forDefaults.canRunInstalled
+  # Whether to build the regular manual
+  enableManual ? __forDefaults.canRunInstalled,
 
-# Whether to use garbage collection for the Nix language evaluator.
-#
-# If it is disabled, we just leak memory, but this is not as bad as it
-# sounds so long as evaluation just takes places within short-lived
-# processes. (When the process exits, the memory is reclaimed; it is
-# only leaked *within* the process.)
-#
-# Temporarily disabled on Windows because the `GC_throw_bad_alloc`
-# symbol is missing during linking.
-#
-# Disabled on OpenBSD because of missing `_data_start` symbol while linking
-, enableGC ? !stdenv.hostPlatform.isWindows && !stdenv.hostPlatform.isOpenBSD
+  # Whether to use garbage collection for the Nix language evaluator.
+  #
+  # If it is disabled, we just leak memory, but this is not as bad as it
+  # sounds so long as evaluation just takes places within short-lived
+  # processes. (When the process exits, the memory is reclaimed; it is
+  # only leaked *within* the process.)
+  #
+  # Temporarily disabled on Windows because the `GC_throw_bad_alloc`
+  # symbol is missing during linking.
+  #
+  # Disabled on OpenBSD because of missing `_data_start` symbol while linking
+  enableGC ? !stdenv.hostPlatform.isWindows && !stdenv.hostPlatform.isOpenBSD,
 
-# Whether to enable Markdown rendering in the Nix binary.
-, enableMarkdown ? !stdenv.hostPlatform.isWindows
+  # Whether to enable Markdown rendering in the Nix binary.
+  enableMarkdown ? !stdenv.hostPlatform.isWindows,
 
-# Which interactive line editor library to use for Nix's repl.
-#
-# Currently supported choices are:
-#
-# - editline (default)
-# - readline
-, readlineFlavor ? if stdenv.hostPlatform.isWindows then "readline" else "editline"
+  # Which interactive line editor library to use for Nix's repl.
+  #
+  # Currently supported choices are:
+  #
+  # - editline (default)
+  # - readline
+  readlineFlavor ? if stdenv.hostPlatform.isWindows then "readline" else "editline",
 
-# Whether to install unit tests. This is useful when cross compiling
-# since we cannot run them natively during the build, but can do so
-# later.
-, installUnitTests ? doBuild && !__forDefaults.canExecuteHost
+  # Whether to install unit tests. This is useful when cross compiling
+  # since we cannot run them natively during the build, but can do so
+  # later.
+  installUnitTests ? doBuild && !__forDefaults.canExecuteHost,
 
-# For running the functional tests against a pre-built Nix. Probably
-# want to use in conjunction with `doBuild = false;`.
-, test-daemon ? null
-, test-client ? null
+  # For running the functional tests against a pre-built Nix. Probably
+  # want to use in conjunction with `doBuild = false;`.
+  test-daemon ? null,
+  test-client ? null,
 
-# Avoid setting things that would interfere with a functioning devShell
-, forDevShell ? false
+  # Avoid setting things that would interfere with a functioning devShell
+  forDevShell ? false,
 
-# Not a real argument, just the only way to approximate let-binding some
-# stuff for argument defaults.
-, __forDefaults ? {
+  # Not a real argument, just the only way to approximate let-binding some
+  # stuff for argument defaults.
+  __forDefaults ? {
     canExecuteHost = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
     canRunInstalled = doBuild && __forDefaults.canExecuteHost;
-  }
+  },
 }:
 
 let
@@ -125,250 +126,304 @@ let
   };
 
   mkDerivation =
-    if withCoverageChecks
-    then
+    if withCoverageChecks then
       # TODO support `finalAttrs` args function in
       # `releaseTools.coverageAnalysis`.
       argsFun:
-         releaseTools.coverageAnalysis (let args = argsFun args; in args)
-    else stdenv.mkDerivation;
+      releaseTools.coverageAnalysis (
+        let
+          args = argsFun args;
+        in
+        args
+      )
+    else
+      stdenv.mkDerivation;
 in
 
-mkDerivation (finalAttrs: let
+mkDerivation (
+  finalAttrs:
+  let
 
-  inherit (finalAttrs)
-    doCheck
-    doInstallCheck
-    ;
+    inherit (finalAttrs)
+      doCheck
+      doInstallCheck
+      ;
 
-  doBuild = !finalAttrs.dontBuild;
+    doBuild = !finalAttrs.dontBuild;
 
-  # Either running the unit tests during the build, or installing them
-  # to be run later, requiresthe unit tests to be built.
-  buildUnitTests = doCheck || installUnitTests;
+    # Either running the unit tests during the build, or installing them
+    # to be run later, requiresthe unit tests to be built.
+    buildUnitTests = doCheck || installUnitTests;
 
-in {
-  inherit pname version;
+  in
+  {
+    inherit pname version;
 
-  src =
-    let
-      baseFiles = fileset.fileFilter (f: f.name != ".gitignore") ./.;
-    in
+    src =
+      let
+        baseFiles = fileset.fileFilter (f: f.name != ".gitignore") ./.;
+      in
       fileset.toSource {
         root = ./.;
-        fileset = fileset.intersection baseFiles (fileset.unions ([
-          # For configure
-          ./.version
-          ./configure.ac
-          ./m4
-          # TODO: do we really need README.md? It doesn't seem used in the build.
-          ./README.md
-          # This could be put behind a conditional
-          ./maintainers/local.mk
-          # For make, regardless of what we are building
-          ./local.mk
-          ./Makefile
-          ./Makefile.config.in
-          ./mk
-          (fileset.fileFilter (f: lib.strings.hasPrefix "nix-profile" f.name) ./scripts)
-        ] ++ lib.optionals doBuild [
-          ./doc
-          ./misc
-          ./precompiled-headers.h
-          (fileset.difference ./src ./src/perl)
-          ./COPYING
-          ./scripts/local.mk
-        ] ++ lib.optionals enableManual [
-          ./doc/manual
-        ] ++ lib.optionals buildUnitTests [
-          ./tests/unit
-        ] ++ lib.optionals doInstallCheck [
-          ./tests/functional
-        ]));
+        fileset = fileset.intersection baseFiles (
+          fileset.unions (
+            [
+              # For configure
+              ./.version
+              ./configure.ac
+              ./m4
+              # TODO: do we really need README.md? It doesn't seem used in the build.
+              ./README.md
+              # This could be put behind a conditional
+              ./maintainers/local.mk
+              # For make, regardless of what we are building
+              ./local.mk
+              ./Makefile
+              ./Makefile.config.in
+              ./mk
+              (fileset.fileFilter (f: lib.strings.hasPrefix "nix-profile" f.name) ./scripts)
+            ]
+            ++ lib.optionals doBuild [
+              ./doc
+              ./misc
+              ./precompiled-headers.h
+              (fileset.difference ./src ./src/perl)
+              ./COPYING
+              ./scripts/local.mk
+            ]
+            ++ lib.optionals enableManual [
+              ./doc/manual
+            ]
+            ++ lib.optionals buildUnitTests [
+              ./tests/unit
+            ]
+            ++ lib.optionals doInstallCheck [
+              ./tests/functional
+            ]
+          )
+        );
       };
 
-  VERSION_SUFFIX = versionSuffix;
+    VERSION_SUFFIX = versionSuffix;
 
-  outputs = [ "out" ]
-    ++ lib.optional doBuild "dev"
-    # If we are doing just build or just docs, the one thing will use
-    # "out". We only need additional outputs if we are doing both.
-    ++ lib.optional (doBuild && enableManual) "doc"
-    ++ lib.optional installUnitTests "check"
-    ++ lib.optional doCheck "testresults"
-    ;
+    outputs =
+      [ "out" ]
+      ++ lib.optional doBuild "dev"
+      # If we are doing just build or just docs, the one thing will use
+      # "out". We only need additional outputs if we are doing both.
+      ++ lib.optional (doBuild && enableManual) "doc"
+      ++ lib.optional installUnitTests "check"
+      ++ lib.optional doCheck "testresults";
 
-  nativeBuildInputs = [
-    autoconf-archive
-    autoreconfHook
-    pkg-config
-  ] ++ lib.optionals doBuild [
-    bison
-    flex
-  ] ++ lib.optionals enableManual [
-    (lib.getBin lowdown)
-    mdbook
-    mdbook-linkcheck
-  ] ++ lib.optionals doInstallCheck [
-    git
-    mercurial
-    openssh
-  ] ++ lib.optionals (doInstallCheck || enableManual) [
-    jq # Also for custom mdBook preprocessor.
-  ] ++ lib.optionals enableManual [
-    man
-  ] ++ lib.optional stdenv.hostPlatform.isStatic unixtools.hexdump
-  ;
+    nativeBuildInputs =
+      [
+        autoconf-archive
+        autoreconfHook
+        pkg-config
+      ]
+      ++ lib.optionals doBuild [
+        bison
+        flex
+      ]
+      ++ lib.optionals enableManual [
+        (lib.getBin lowdown)
+        mdbook
+        mdbook-linkcheck
+      ]
+      ++ lib.optionals doInstallCheck [
+        git
+        mercurial
+        openssh
+      ]
+      ++ lib.optionals (doInstallCheck || enableManual) [
+        jq # Also for custom mdBook preprocessor.
+      ]
+      ++ lib.optionals enableManual [
+        man
+      ]
+      ++ lib.optional stdenv.hostPlatform.isStatic unixtools.hexdump;
 
-  buildInputs = lib.optionals doBuild (
-  [
-    brotli
-    bzip2
-    curl
-    libarchive
-    libgit2
-    libsodium
-    openssl
-    sqlite
-    toml11
-    xz
-    ({ inherit readline editline; }.${readlineFlavor})
-  ] ++ lib.optionals enableMarkdown [
-    lowdown
-  ] ++ lib.optionals buildUnitTests [
-    gtest
-    rapidcheck
-  ] ++ lib.optional stdenv.isLinux libseccomp
-    ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.libs.sandbox
-    ++ lib.optional stdenv.hostPlatform.isx86_64 libcpuid
-    # There have been issues building these dependencies
-    ++ lib.optional (stdenv.hostPlatform == stdenv.buildPlatform && (stdenv.isLinux || stdenv.isDarwin))
-      aws-sdk-cpp
-  );
+    buildInputs = lib.optionals doBuild (
+      [
+        brotli
+        bzip2
+        curl
+        libarchive
+        libgit2
+        libsodium
+        openssl
+        sqlite
+        toml11
+        xz
+        ({ inherit readline editline; }.${readlineFlavor})
+      ]
+      ++ lib.optionals enableMarkdown [
+        lowdown
+      ]
+      ++ lib.optionals buildUnitTests [
+        gtest
+        rapidcheck
+      ]
+      ++ lib.optional stdenv.isLinux libseccomp
+      ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.libs.sandbox
+      ++ lib.optional stdenv.hostPlatform.isx86_64 libcpuid
+      # There have been issues building these dependencies
+      ++ lib.optional (
+        stdenv.hostPlatform == stdenv.buildPlatform && (stdenv.isLinux || stdenv.isDarwin)
+      ) aws-sdk-cpp
+    );
 
-  propagatedBuildInputs = lib.optionals doBuild ([
-    boost
-    nlohmann_json
-  ] ++ lib.optional enableGC boehmgc
-  );
+    propagatedBuildInputs = lib.optionals doBuild (
+      [
+        boost
+        nlohmann_json
+      ]
+      ++ lib.optional enableGC boehmgc
+    );
 
-  dontBuild = !attrs.doBuild;
-  doCheck = attrs.doCheck;
+    dontBuild = !attrs.doBuild;
+    doCheck = attrs.doCheck;
 
-  configureFlags = [
-    (lib.enableFeature doBuild "build")
-    (lib.enableFeature buildUnitTests "unit-tests")
-    (lib.enableFeature doInstallCheck "functional-tests")
-    (lib.enableFeature enableManual "doc-gen")
-    (lib.enableFeature enableGC "gc")
-    (lib.enableFeature enableMarkdown "markdown")
-    (lib.enableFeature installUnitTests "install-unit-tests")
-    (lib.withFeatureAs true "readline-flavor" readlineFlavor)
-  ] ++ lib.optionals (!forDevShell) [
-    "--sysconfdir=/etc"
-  ] ++ lib.optionals installUnitTests [
-    "--with-check-bin-dir=${builtins.placeholder "check"}/bin"
-    "--with-check-lib-dir=${builtins.placeholder "check"}/lib"
-  ] ++ lib.optionals (doBuild) [
-    "--with-boost=${boost}/lib"
-  ] ++ lib.optionals (doBuild && stdenv.isLinux) [
-    "--with-sandbox-shell=${busybox-sandbox-shell}/bin/busybox"
-  ] ++ lib.optional (doBuild && stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
-       "LDFLAGS=-fuse-ld=gold"
-    ++ lib.optional (doBuild && stdenv.hostPlatform.isStatic) "--enable-embedded-sandbox-shell"
-    ;
+    configureFlags =
+      [
+        (lib.enableFeature doBuild "build")
+        (lib.enableFeature buildUnitTests "unit-tests")
+        (lib.enableFeature doInstallCheck "functional-tests")
+        (lib.enableFeature enableManual "doc-gen")
+        (lib.enableFeature enableGC "gc")
+        (lib.enableFeature enableMarkdown "markdown")
+        (lib.enableFeature installUnitTests "install-unit-tests")
+        (lib.withFeatureAs true "readline-flavor" readlineFlavor)
+      ]
+      ++ lib.optionals (!forDevShell) [
+        "--sysconfdir=/etc"
+      ]
+      ++ lib.optionals installUnitTests [
+        "--with-check-bin-dir=${builtins.placeholder "check"}/bin"
+        "--with-check-lib-dir=${builtins.placeholder "check"}/lib"
+      ]
+      ++ lib.optionals (doBuild) [
+        "--with-boost=${boost}/lib"
+      ]
+      ++ lib.optionals (doBuild && stdenv.isLinux) [
+        "--with-sandbox-shell=${busybox-sandbox-shell}/bin/busybox"
+      ]
+      ++ lib.optional (
+        doBuild && stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")
+      ) "LDFLAGS=-fuse-ld=gold"
+      ++ lib.optional (doBuild && stdenv.hostPlatform.isStatic) "--enable-embedded-sandbox-shell";
 
-  enableParallelBuilding = true;
+    enableParallelBuilding = true;
 
-  makeFlags = "profiledir=$(out)/etc/profile.d PRECOMPILE_HEADERS=1";
+    makeFlags = "profiledir=$(out)/etc/profile.d PRECOMPILE_HEADERS=1";
 
-  preCheck = ''
-    mkdir $testresults
-  '';
-
-  installTargets = lib.optional doBuild "install";
-
-  installFlags = "sysconfdir=$(out)/etc";
-
-  # In this case we are probably just running tests, and so there isn't
-  # anything to install, we just make an empty directory to signify tests
-  # succeeded.
-  installPhase = if finalAttrs.installTargets != [] then null else ''
-    mkdir -p $out
-  '';
-
-  postInstall = lib.optionalString doBuild (
-    lib.optionalString stdenv.hostPlatform.isStatic ''
-      mkdir -p $out/nix-support
-      echo "file binary-dist $out/bin/nix" >> $out/nix-support/hydra-build-products
-    ''
-  ) + lib.optionalString enableManual ''
-    mkdir -p ''${!outputDoc}/nix-support
-    echo "doc manual ''${!outputDoc}/share/doc/nix/manual" >> ''${!outputDoc}/nix-support/hydra-build-products
-  '';
-
-  # So the check output gets links for DLLs in the out output.
-  preFixup = lib.optionalString (stdenv.hostPlatform.isWindows && builtins.elem "check" finalAttrs.outputs) ''
-    ln -s "$check/lib/"*.dll "$check/bin"
-    ln -s "$out/bin/"*.dll "$check/bin"
-  '';
-
-  doInstallCheck = attrs.doInstallCheck;
-
-  installCheckFlags = "sysconfdir=$(out)/etc";
-  # Work around buggy detection in stdenv.
-  installCheckTarget = "installcheck";
-
-  # Work around weird bug where it doesn't think there is a Makefile.
-  installCheckPhase = if (!doBuild && doInstallCheck) then ''
-    runHook preInstallCheck
-    mkdir -p src/nix-channel
-    make installcheck -j$NIX_BUILD_CORES -l$NIX_BUILD_CORES
-  '' else null;
-
-  # Needed for tests if we are not doing a build, but testing existing
-  # built Nix.
-  preInstallCheck =
-    lib.optionalString (! doBuild) ''
-      mkdir -p src/nix-channel
-    ''
-    # See https://github.com/NixOS/nix/issues/2523
-    # Occurs often in tests since https://github.com/NixOS/nix/pull/9900
-    + lib.optionalString stdenv.hostPlatform.isDarwin ''
-      export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES
+    preCheck = ''
+      mkdir $testresults
     '';
 
-  separateDebugInfo = !stdenv.hostPlatform.isStatic;
+    installTargets = lib.optional doBuild "install";
 
-  # TODO Always true after https://github.com/NixOS/nixpkgs/issues/318564
-  strictDeps = !withCoverageChecks;
+    installFlags = "sysconfdir=$(out)/etc";
 
-  hardeningDisable = lib.optional stdenv.hostPlatform.isStatic "pie";
+    # In this case we are probably just running tests, and so there isn't
+    # anything to install, we just make an empty directory to signify tests
+    # succeeded.
+    installPhase =
+      if finalAttrs.installTargets != [ ] then
+        null
+      else
+        ''
+          mkdir -p $out
+        '';
 
-  meta = {
-    platforms = lib.platforms.unix ++ lib.platforms.windows;
-    mainProgram = "nix";
-    broken = !(lib.all (a: a) [
-      # We cannot run or install unit tests if we don't build them or
-      # Nix proper (which they depend on).
-      (installUnitTests -> doBuild)
-      (doCheck -> doBuild)
-      # The build process for the manual currently requires extracting
-      # data from the Nix executable we are trying to document.
-      (enableManual -> doBuild)
-    ]);
-  };
+    postInstall =
+      lib.optionalString doBuild (
+        lib.optionalString stdenv.hostPlatform.isStatic ''
+          mkdir -p $out/nix-support
+          echo "file binary-dist $out/bin/nix" >> $out/nix-support/hydra-build-products
+        ''
+      )
+      + lib.optionalString enableManual ''
+        mkdir -p ''${!outputDoc}/nix-support
+        echo "doc manual ''${!outputDoc}/share/doc/nix/manual" >> ''${!outputDoc}/nix-support/hydra-build-products
+      '';
 
-} // lib.optionalAttrs withCoverageChecks {
-  lcovFilter = [ "*/boost/*" "*-tab.*" ];
+    # So the check output gets links for DLLs in the out output.
+    preFixup =
+      lib.optionalString (stdenv.hostPlatform.isWindows && builtins.elem "check" finalAttrs.outputs)
+        ''
+          ln -s "$check/lib/"*.dll "$check/bin"
+          ln -s "$out/bin/"*.dll "$check/bin"
+        '';
 
-  hardeningDisable = ["fortify"];
+    doInstallCheck = attrs.doInstallCheck;
 
-  NIX_CFLAGS_COMPILE = "-DCOVERAGE=1";
+    installCheckFlags = "sysconfdir=$(out)/etc";
+    # Work around buggy detection in stdenv.
+    installCheckTarget = "installcheck";
 
-  dontInstall = false;
-} // lib.optionalAttrs (test-daemon != null) {
-  NIX_DAEMON_PACKAGE = test-daemon;
-} // lib.optionalAttrs (test-client != null) {
-  NIX_CLIENT_PACKAGE = test-client;
-})
+    # Work around weird bug where it doesn't think there is a Makefile.
+    installCheckPhase =
+      if (!doBuild && doInstallCheck) then
+        ''
+          runHook preInstallCheck
+          mkdir -p src/nix-channel
+          make installcheck -j$NIX_BUILD_CORES -l$NIX_BUILD_CORES
+        ''
+      else
+        null;
+
+    # Needed for tests if we are not doing a build, but testing existing
+    # built Nix.
+    preInstallCheck =
+      lib.optionalString (!doBuild) ''
+        mkdir -p src/nix-channel
+      ''
+      # See https://github.com/NixOS/nix/issues/2523
+      # Occurs often in tests since https://github.com/NixOS/nix/pull/9900
+      + lib.optionalString stdenv.hostPlatform.isDarwin ''
+        export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES
+      '';
+
+    separateDebugInfo = !stdenv.hostPlatform.isStatic;
+
+    # TODO Always true after https://github.com/NixOS/nixpkgs/issues/318564
+    strictDeps = !withCoverageChecks;
+
+    hardeningDisable = lib.optional stdenv.hostPlatform.isStatic "pie";
+
+    meta = {
+      platforms = lib.platforms.unix ++ lib.platforms.windows;
+      mainProgram = "nix";
+      broken =
+        !(lib.all (a: a) [
+          # We cannot run or install unit tests if we don't build them or
+          # Nix proper (which they depend on).
+          (installUnitTests -> doBuild)
+          (doCheck -> doBuild)
+          # The build process for the manual currently requires extracting
+          # data from the Nix executable we are trying to document.
+          (enableManual -> doBuild)
+        ]);
+    };
+
+  }
+  // lib.optionalAttrs withCoverageChecks {
+    lcovFilter = [
+      "*/boost/*"
+      "*-tab.*"
+    ];
+
+    hardeningDisable = [ "fortify" ];
+
+    NIX_CFLAGS_COMPILE = "-DCOVERAGE=1";
+
+    dontInstall = false;
+  }
+  // lib.optionalAttrs (test-daemon != null) {
+    NIX_DAEMON_PACKAGE = test-daemon;
+  }
+  // lib.optionalAttrs (test-client != null) {
+    NIX_CLIENT_PACKAGE = test-client;
+  }
+)

packaging/dependencies.nix

@@ -20,9 +20,7 @@ let
 
   root = ../.;
 
-  stdenv = if prevStdenv.isDarwin && prevStdenv.isx86_64
-    then darwinStdenv
-    else prevStdenv;
+  stdenv = if prevStdenv.isDarwin && prevStdenv.isx86_64 then darwinStdenv else prevStdenv;
 
   # Fix the following error with the default x86_64-darwin SDK:
   #
@@ -39,7 +37,8 @@ let
   # Indirection for Nixpkgs to override when package.nix files are vendored
   filesetToSource = lib.fileset.toSource;
 
-  localSourceLayer = finalAttrs: prevAttrs:
+  localSourceLayer =
+    finalAttrs: prevAttrs:
     let
       workDirPath =
         # Ideally we'd pick finalAttrs.workDir, but for now `mkDerivation` has
@@ -48,8 +47,13 @@ let
         prevAttrs.workDir;
 
       workDirSubpath = lib.path.removePrefix root workDirPath;
-      sources = assert prevAttrs.fileset._type == "fileset"; prevAttrs.fileset;
-      src = lib.fileset.toSource { fileset = sources; inherit root; };
+      sources =
+        assert prevAttrs.fileset._type == "fileset";
+        prevAttrs.fileset;
+      src = lib.fileset.toSource {
+        fileset = sources;
+        inherit root;
+      };
 
     in
     {
@@ -63,30 +67,35 @@ let
 
   # Work around weird `--as-needed` linker behavior with BSD, see
   # https://github.com/mesonbuild/meson/issues/3593
-  bsdNoLinkAsNeeded = finalAttrs: prevAttrs:
+  bsdNoLinkAsNeeded =
+    finalAttrs: prevAttrs:
     lib.optionalAttrs stdenv.hostPlatform.isBSD {
-      mesonFlags = [ (lib.mesonBool "b_asneeded" false) ] ++ prevAttrs.mesonFlags or [];
+      mesonFlags = [ (lib.mesonBool "b_asneeded" false) ] ++ prevAttrs.mesonFlags or [ ];
     };
 
-  miscGoodPractice = finalAttrs: prevAttrs:
-    {
-      strictDeps = prevAttrs.strictDeps or true;
-      enableParallelBuilding = true;
-    };
+  miscGoodPractice = finalAttrs: prevAttrs: {
+    strictDeps = prevAttrs.strictDeps or true;
+    enableParallelBuilding = true;
+  };
 
 in
 scope: {
   inherit stdenv versionSuffix;
   version = lib.fileContents ../.version + versionSuffix;
 
-  aws-sdk-cpp = (pkgs.aws-sdk-cpp.override {
-    apis = [ "s3" "transfer" ];
-    customMemoryManagement = false;
-  }).overrideAttrs {
-    # only a stripped down version is built, which takes a lot less resources
-    # to build, so we don't need a "big-parallel" machine.
-    requiredSystemFeatures = [ ];
-  };
+  aws-sdk-cpp =
+    (pkgs.aws-sdk-cpp.override {
+      apis = [
+        "s3"
+        "transfer"
+      ];
+      customMemoryManagement = false;
+    }).overrideAttrs
+      {
+        # only a stripped down version is built, which takes a lot less resources
+        # to build, so we don't need a "big-parallel" machine.
+        requiredSystemFeatures = [ ];
+      };
 
   libseccomp = pkgs.libseccomp.overrideAttrs (_: rec {
     version = "2.5.5";
@@ -101,48 +110,50 @@ scope: {
   };
 
   # TODO Hack until https://github.com/NixOS/nixpkgs/issues/45462 is fixed.
-  boost = (pkgs.boost.override {
-    extraB2Args = [
-      "--with-container"
-      "--with-context"
-      "--with-coroutine"
-    ];
-  }).overrideAttrs (old: {
-    # Need to remove `--with-*` to use `--with-libraries=...`
-    buildPhase = lib.replaceStrings [ "--without-python" ] [ "" ] old.buildPhase;
-    installPhase = lib.replaceStrings [ "--without-python" ] [ "" ] old.installPhase;
-  });
+  boost =
+    (pkgs.boost.override {
+      extraB2Args = [
+        "--with-container"
+        "--with-context"
+        "--with-coroutine"
+      ];
+    }).overrideAttrs
+      (old: {
+        # Need to remove `--with-*` to use `--with-libraries=...`
+        buildPhase = lib.replaceStrings [ "--without-python" ] [ "" ] old.buildPhase;
+        installPhase = lib.replaceStrings [ "--without-python" ] [ "" ] old.installPhase;
+      });
 
   libgit2 = pkgs.libgit2.overrideAttrs (attrs: {
     src = inputs.libgit2;
     version = inputs.libgit2.lastModifiedDate;
-    cmakeFlags = attrs.cmakeFlags or []
-      ++ [ "-DUSE_SSH=exec" ];
+    cmakeFlags = attrs.cmakeFlags or [ ] ++ [ "-DUSE_SSH=exec" ];
   });
 
-  busybox-sandbox-shell = pkgs.busybox-sandbox-shell or (pkgs.busybox.override {
-    useMusl = true;
-    enableStatic = true;
-    enableMinimal = true;
-    extraConfig = ''
-      CONFIG_FEATURE_FANCY_ECHO y
-      CONFIG_FEATURE_SH_MATH y
-      CONFIG_FEATURE_SH_MATH_64 y
+  busybox-sandbox-shell =
+    pkgs.busybox-sandbox-shell or (pkgs.busybox.override {
+      useMusl = true;
+      enableStatic = true;
+      enableMinimal = true;
+      extraConfig = ''
+        CONFIG_FEATURE_FANCY_ECHO y
+        CONFIG_FEATURE_SH_MATH y
+        CONFIG_FEATURE_SH_MATH_64 y
 
-      CONFIG_ASH y
-      CONFIG_ASH_OPTIMIZE_FOR_SIZE y
+        CONFIG_ASH y
+        CONFIG_ASH_OPTIMIZE_FOR_SIZE y
 
-      CONFIG_ASH_ALIAS y
-      CONFIG_ASH_BASH_COMPAT y
-      CONFIG_ASH_CMDCMD y
-      CONFIG_ASH_ECHO y
-      CONFIG_ASH_GETOPTS y
-      CONFIG_ASH_INTERNAL_GLOB y
-      CONFIG_ASH_JOB_CONTROL y
-      CONFIG_ASH_PRINTF y
-      CONFIG_ASH_TEST y
-    '';
-  });
+        CONFIG_ASH_ALIAS y
+        CONFIG_ASH_BASH_COMPAT y
+        CONFIG_ASH_CMDCMD y
+        CONFIG_ASH_ECHO y
+        CONFIG_ASH_GETOPTS y
+        CONFIG_ASH_INTERNAL_GLOB y
+        CONFIG_ASH_JOB_CONTROL y
+        CONFIG_ASH_PRINTF y
+        CONFIG_ASH_TEST y
+      '';
+    });
 
   # TODO change in Nixpkgs, Windows works fine. First commit of
   # https://github.com/NixOS/nixpkgs/pull/322977 backported will fix.
@@ -152,14 +163,14 @@ scope: {
 
   inherit resolvePath filesetToSource;
 
-  mkMesonDerivation = f: let
-    exts = [
-      miscGoodPractice
-      bsdNoLinkAsNeeded
-      localSourceLayer
-    ];
-  in stdenv.mkDerivation
-   (lib.extends
-     (lib.foldr lib.composeExtensions (_: _: {}) exts)
-     f);
+  mkMesonDerivation =
+    f:
+    let
+      exts = [
+        miscGoodPractice
+        bsdNoLinkAsNeeded
+        localSourceLayer
+      ];
+    in
+    stdenv.mkDerivation (lib.extends (lib.foldr lib.composeExtensions (_: _: { }) exts) f);
 }

packaging/hydra.nix

@@ -1,28 +1,31 @@
-{ inputs
-, binaryTarball
-, forAllCrossSystems
-, forAllSystems
-, lib
-, linux64BitSystems
-, nixpkgsFor
-, self
+{
+  inputs,
+  binaryTarball,
+  forAllCrossSystems,
+  forAllSystems,
+  lib,
+  linux64BitSystems,
+  nixpkgsFor,
+  self,
 }:
 let
   inherit (inputs) nixpkgs nixpkgs-regression;
 
-  installScriptFor = tarballs:
+  installScriptFor =
+    tarballs:
     nixpkgsFor.x86_64-linux.native.callPackage ../scripts/installer.nix {
       inherit tarballs;
     };
 
-  testNixVersions = pkgs: client: daemon:
+  testNixVersions =
+    pkgs: client: daemon:
     pkgs.callPackage ../package.nix {
       pname =
         "nix-tests"
-        + lib.optionalString
-          (lib.versionAtLeast daemon.version "2.4pre20211005" &&
-           lib.versionAtLeast client.version "2.4pre20211005")
-          "-${client.version}-against-${daemon.version}";
+        + lib.optionalString (
+          lib.versionAtLeast daemon.version "2.4pre20211005"
+          && lib.versionAtLeast client.version "2.4pre20211005"
+        ) "-${client.version}-against-${daemon.version}";
 
       test-client = client;
       test-daemon = daemon;
@@ -59,27 +62,35 @@ let
 in
 {
   # Binary package for various platforms.
-  build = forAllPackages (pkgName:
-    forAllSystems (system: nixpkgsFor.${system}.native.nixComponents.${pkgName}));
+  build = forAllPackages (
+    pkgName: forAllSystems (system: nixpkgsFor.${system}.native.nixComponents.${pkgName})
+  );
 
   shellInputs = forAllSystems (system: self.devShells.${system}.default.inputDerivation);
 
-  buildStatic = forAllPackages (pkgName:
-    lib.genAttrs linux64BitSystems (system: nixpkgsFor.${system}.static.nixComponents.${pkgName}));
-
-  buildCross = forAllPackages (pkgName:
-    forAllCrossSystems (crossSystem:
-      lib.genAttrs [ "x86_64-linux" ] (system: nixpkgsFor.${system}.cross.${crossSystem}.nixComponents.${pkgName})));
-
-  buildNoGc = forAllSystems (system:
-    self.packages.${system}.nix.override { enableGC = false; }
+  buildStatic = forAllPackages (
+    pkgName:
+    lib.genAttrs linux64BitSystems (system: nixpkgsFor.${system}.static.nixComponents.${pkgName})
   );
 
+  buildCross = forAllPackages (
+    pkgName:
+    forAllCrossSystems (
+      crossSystem:
+      lib.genAttrs [ "x86_64-linux" ] (
+        system: nixpkgsFor.${system}.cross.${crossSystem}.nixComponents.${pkgName}
+      )
+    )
+  );
+
+  buildNoGc = forAllSystems (system: self.packages.${system}.nix.override { enableGC = false; });
+
   buildNoTests = forAllSystems (system: nixpkgsFor.${system}.native.nix_noTests);
 
   # Toggles some settings for better coverage. Windows needs these
   # library combinations, and Debian build Nix with GNU readline too.
-  buildReadlineNoMarkdown = forAllSystems (system:
+  buildReadlineNoMarkdown = forAllSystems (
+    system:
     self.packages.${system}.nix.override {
       enableMarkdown = false;
       readlineFlavor = "readline";
@@ -92,13 +103,18 @@ in
   # Binary tarball for various platforms, containing a Nix store
   # with the closure of 'nix' package, and the second half of
   # the installation script.
-  binaryTarball = forAllSystems (system: binaryTarball nixpkgsFor.${system}.native.nix nixpkgsFor.${system}.native);
+  binaryTarball = forAllSystems (
+    system: binaryTarball nixpkgsFor.${system}.native.nix nixpkgsFor.${system}.native
+  );
 
-  binaryTarballCross = lib.genAttrs [ "x86_64-linux" ] (system:
-    forAllCrossSystems (crossSystem:
-      binaryTarball
-        nixpkgsFor.${system}.cross.${crossSystem}.nix
-        nixpkgsFor.${system}.cross.${crossSystem}));
+  binaryTarballCross = lib.genAttrs [ "x86_64-linux" ] (
+    system:
+    forAllCrossSystems (
+      crossSystem:
+      binaryTarball nixpkgsFor.${system}.cross.${crossSystem}.nix
+        nixpkgsFor.${system}.cross.${crossSystem}
+    )
+  );
 
   # The first half of the installation script. This is uploaded
   # to https://nixos.org/nix/install. It downloads the binary
@@ -117,9 +133,12 @@ in
     self.hydraJobs.binaryTarballCross."x86_64-linux"."riscv64-unknown-linux-gnu"
   ];
 
-  installerScriptForGHA = forAllSystems (system: nixpkgsFor.${system}.native.callPackage ../scripts/installer.nix {
-    tarballs = [ self.hydraJobs.binaryTarball.${system} ];
-  });
+  installerScriptForGHA = forAllSystems (
+    system:
+    nixpkgsFor.${system}.native.callPackage ../scripts/installer.nix {
+      tarballs = [ self.hydraJobs.binaryTarball.${system} ];
+    }
+  );
 
   # docker image with Nix inside
   dockerImage = lib.genAttrs linux64BitSystems (system: self.packages.${system}.dockerImage);
@@ -137,16 +156,24 @@ in
   external-api-docs = nixpkgsFor.x86_64-linux.native.nixComponents.nix-external-api-docs;
 
   # System tests.
-  tests = import ../tests/nixos { inherit lib nixpkgs nixpkgsFor self; } // {
+  tests =
+    import ../tests/nixos {
+      inherit
+        lib
+        nixpkgs
+        nixpkgsFor
+        self
+        ;
+    }
+    // {
 
-    # Make sure that nix-env still produces the exact same result
-    # on a particular version of Nixpkgs.
-    evalNixpkgs =
-      let
-        inherit (nixpkgsFor.x86_64-linux.native) runCommand nix;
-      in
-      runCommand "eval-nixos" { buildInputs = [ nix ]; }
-        ''
+      # Make sure that nix-env still produces the exact same result
+      # on a particular version of Nixpkgs.
+      evalNixpkgs =
+        let
+          inherit (nixpkgsFor.x86_64-linux.native) runCommand nix;
+        in
+        runCommand "eval-nixos" { buildInputs = [ nix ]; } ''
           type -p nix-env
           # Note: we're filtering out nixos-install-tools because https://github.com/NixOS/nixpkgs/pull/153594#issuecomment-1020530593.
           (
@@ -157,36 +184,36 @@ in
           mkdir $out
         '';
 
-    nixpkgsLibTests =
-      forAllSystems (system:
-        import (nixpkgs + "/lib/tests/test-with-nix.nix")
-          {
-            lib = nixpkgsFor.${system}.native.lib;
-            nix = self.packages.${system}.nix;
-            pkgs = nixpkgsFor.${system}.native;
-          }
+      nixpkgsLibTests = forAllSystems (
+        system:
+        import (nixpkgs + "/lib/tests/test-with-nix.nix") {
+          lib = nixpkgsFor.${system}.native.lib;
+          nix = self.packages.${system}.nix;
+          pkgs = nixpkgsFor.${system}.native;
+        }
       );
-  };
+    };
 
   metrics.nixpkgs = import "${nixpkgs-regression}/pkgs/top-level/metrics.nix" {
     pkgs = nixpkgsFor.x86_64-linux.native;
     nixpkgs = nixpkgs-regression;
   };
 
-  installTests = forAllSystems (system:
-    let pkgs = nixpkgsFor.${system}.native; in
-    pkgs.runCommand "install-tests"
-      {
-        againstSelf = testNixVersions pkgs pkgs.nix pkgs.pkgs.nix;
-        againstCurrentLatest =
-          # FIXME: temporarily disable this on macOS because of #3605.
-          if system == "x86_64-linux"
-          then testNixVersions pkgs pkgs.nix pkgs.nixVersions.latest
-          else null;
-        # Disabled because the latest stable version doesn't handle
-        # `NIX_DAEMON_SOCKET_PATH` which is required for the tests to work
-        # againstLatestStable = testNixVersions pkgs pkgs.nix pkgs.nixStable;
-      } "touch $out");
+  installTests = forAllSystems (
+    system:
+    let
+      pkgs = nixpkgsFor.${system}.native;
+    in
+    pkgs.runCommand "install-tests" {
+      againstSelf = testNixVersions pkgs pkgs.nix pkgs.pkgs.nix;
+      againstCurrentLatest =
+        # FIXME: temporarily disable this on macOS because of #3605.
+        if system == "x86_64-linux" then testNixVersions pkgs pkgs.nix pkgs.nixVersions.latest else null;
+      # Disabled because the latest stable version doesn't handle
+      # `NIX_DAEMON_SOCKET_PATH` which is required for the tests to work
+      # againstLatestStable = testNixVersions pkgs pkgs.nix pkgs.nixStable;
+    } "touch $out"
+  );
 
   installerTests = import ../tests/installer {
     binaryTarballs = self.hydraJobs.binaryTarball;

scripts/binary-tarball.nix

@@ -1,14 +1,18 @@
-{ runCommand
-, system
-, buildPackages
-, cacert
-, nix
+{
+  runCommand,
+  system,
+  buildPackages,
+  cacert,
+  nix,
 }:
 
 let
 
   installerClosureInfo = buildPackages.closureInfo {
-    rootPaths = [ nix cacert ];
+    rootPaths = [
+      nix
+      cacert
+    ];
   };
 
   inherit (nix) version;

scripts/installer.nix

@@ -1,36 +1,42 @@
-{ lib
-, runCommand
-, nix
-, tarballs
+{
+  lib,
+  runCommand,
+  nix,
+  tarballs,
 }:
 
-runCommand "installer-script" {
-  buildInputs = [ nix ];
-} ''
-  mkdir -p $out/nix-support
-
-  # Converts /nix/store/50p3qk8k...-nix-2.4pre20201102_550e11f/bin/nix to 50p3qk8k.../bin/nix.
-  tarballPath() {
-    # Remove the store prefix
-    local path=''${1#${builtins.storeDir}/}
-    # Get the path relative to the derivation root
-    local rest=''${path#*/}
-    # Get the derivation hash
-    local drvHash=''${path%%-*}
-    echo "$drvHash/$rest"
+runCommand "installer-script"
+  {
+    buildInputs = [ nix ];
   }
+  ''
+    mkdir -p $out/nix-support
 
-  substitute ${./install.in} $out/install \
-    ${lib.concatMapStrings
-      (tarball: let
-          inherit (tarball.stdenv.hostPlatform) system;
-        in '' \
-        --replace '@tarballHash_${system}@' $(nix --experimental-features nix-command hash-file --base16 --type sha256 ${tarball}/*.tar.xz) \
-        --replace '@tarballPath_${system}@' $(tarballPath ${tarball}/*.tar.xz) \
-        ''
-      )
-      tarballs
-    } --replace '@nixVersion@' ${nix.version}
+    # Converts /nix/store/50p3qk8k...-nix-2.4pre20201102_550e11f/bin/nix to 50p3qk8k.../bin/nix.
+    tarballPath() {
+      # Remove the store prefix
+      local path=''${1#${builtins.storeDir}/}
+      # Get the path relative to the derivation root
+      local rest=''${path#*/}
+      # Get the derivation hash
+      local drvHash=''${path%%-*}
+      echo "$drvHash/$rest"
+    }
 
-  echo "file installer $out/install" >> $out/nix-support/hydra-build-products
-''
+    substitute ${./install.in} $out/install \
+      ${
+        lib.concatMapStrings (
+          tarball:
+          let
+            inherit (tarball.stdenv.hostPlatform) system;
+          in
+          ''
+            \
+                   --replace '@tarballHash_${system}@' $(nix --experimental-features nix-command hash-file --base16 --type sha256 ${tarball}/*.tar.xz) \
+                   --replace '@tarballPath_${system}@' $(tarballPath ${tarball}/*.tar.xz) \
+          ''
+        ) tarballs
+      } --replace '@nixVersion@' ${nix.version}
+
+    echo "file installer $out/install" >> $out/nix-support/hydra-build-products
+  ''

src/external-api-docs/package.nix

@@ -1,13 +1,14 @@
-{ lib
-, mkMesonDerivation
+{
+  lib,
+  mkMesonDerivation,
 
-, meson
-, ninja
-, doxygen
+  meson,
+  ninja,
+  doxygen,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -42,11 +43,10 @@ mkMesonDerivation (finalAttrs: {
     doxygen
   ];
 
-  preConfigure =
-    ''
-      chmod u+w ./.version
-      echo ${finalAttrs.version} > ./.version
-    '';
+  preConfigure = ''
+    chmod u+w ./.version
+    echo ${finalAttrs.version} > ./.version
+  '';
 
   postInstall = ''
     mkdir -p ''${!outputDoc}/nix-support

src/internal-api-docs/package.nix

@@ -1,13 +1,14 @@
-{ lib
-, mkMesonDerivation
+{
+  lib,
+  mkMesonDerivation,
 
-, meson
-, ninja
-, doxygen
+  meson,
+  ninja,
+  doxygen,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -19,17 +20,19 @@ mkMesonDerivation (finalAttrs: {
   inherit version;
 
   workDir = ./.;
-  fileset = let
-    cpp = fileset.fileFilter (file: file.hasExt "cc" || file.hasExt "hh");
-  in fileset.unions [
-    ./.version
-    ../../.version
-    ./meson.build
-    ./doxygen.cfg.in
-    # Source is not compiled, but still must be available for Doxygen
-    # to gather comments.
-    (cpp ../.)
-  ];
+  fileset =
+    let
+      cpp = fileset.fileFilter (file: file.hasExt "cc" || file.hasExt "hh");
+    in
+    fileset.unions [
+      ./.version
+      ../../.version
+      ./meson.build
+      ./doxygen.cfg.in
+      # Source is not compiled, but still must be available for Doxygen
+      # to gather comments.
+      (cpp ../.)
+    ];
 
   nativeBuildInputs = [
     meson
@@ -37,11 +40,10 @@ mkMesonDerivation (finalAttrs: {
     doxygen
   ];
 
-  preConfigure =
-    ''
-      chmod u+w ./.version
-      echo ${finalAttrs.version} > ./.version
-    '';
+  preConfigure = ''
+    chmod u+w ./.version
+    echo ${finalAttrs.version} > ./.version
+  '';
 
   postInstall = ''
     mkdir -p ''${!outputDoc}/nix-support

src/libcmd/package.nix

@@ -1,37 +1,38 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
+  meson,
+  ninja,
+  pkg-config,
 
-, nix-util
-, nix-store
-, nix-fetchers
-, nix-expr
-, nix-flake
-, nix-main
-, editline
-, readline
-, lowdown
-, nlohmann_json
+  nix-util,
+  nix-store,
+  nix-fetchers,
+  nix-expr,
+  nix-flake,
+  nix-main,
+  editline,
+  readline,
+  lowdown,
+  nlohmann_json,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 
-# Whether to enable Markdown rendering in the Nix binary.
-, enableMarkdown ? !stdenv.hostPlatform.isWindows
+  # Whether to enable Markdown rendering in the Nix binary.
+  enableMarkdown ? !stdenv.hostPlatform.isWindows,
 
-# Which interactive line editor library to use for Nix's repl.
-#
-# Currently supported choices are:
-#
-# - editline (default)
-# - readline
-, readlineFlavor ? if stdenv.hostPlatform.isWindows then "readline" else "editline"
+  # Which interactive line editor library to use for Nix's repl.
+  #
+  # Currently supported choices are:
+  #
+  # - editline (default)
+  # - readline
+  readlineFlavor ? if stdenv.hostPlatform.isWindows then "readline" else "editline",
 }:
 
 let
@@ -54,7 +55,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "hh") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -89,9 +93,12 @@ mkMesonDerivation (finalAttrs: {
     (lib.mesonOption "readline-flavor" readlineFlavor)
   ];
 
-  env = lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/libexpr-c/package.nix

@@ -1,17 +1,18 @@
-{ lib
-, stdenv
-, mkMesonDerivation
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
 
-, meson
-, ninja
-, pkg-config
+  meson,
+  ninja,
+  pkg-config,
 
-, nix-store-c
-, nix-expr
+  nix-store-c,
+  nix-expr,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -35,7 +36,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "h") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -59,9 +63,12 @@ mkMesonDerivation (finalAttrs: {
   mesonFlags = [
   ];
 
-  env = lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/libexpr/call-flake.nix

@@ -17,69 +17,69 @@ let
   # Resolve a input spec into a node name. An input spec is
   # either a node name, or a 'follows' path from the root
   # node.
-  resolveInput = inputSpec:
-    if builtins.isList inputSpec
-    then getInputByPath lockFile.root inputSpec
-    else inputSpec;
+  resolveInput =
+    inputSpec: if builtins.isList inputSpec then getInputByPath lockFile.root inputSpec else inputSpec;
 
   # Follow an input path (e.g. ["dwarffs" "nixpkgs"]) from the
   # root node, returning the final node.
-  getInputByPath = nodeName: path:
-    if path == []
-    then nodeName
+  getInputByPath =
+    nodeName: path:
+    if path == [ ] then
+      nodeName
     else
       getInputByPath
         # Since this could be a 'follows' input, call resolveInput.
         (resolveInput lockFile.nodes.${nodeName}.inputs.${builtins.head path})
         (builtins.tail path);
 
-  allNodes =
-    builtins.mapAttrs
-      (key: node:
-        let
+  allNodes = builtins.mapAttrs (
+    key: node:
+    let
 
-          sourceInfo =
-            if overrides ? ${key}
-            then
-              overrides.${key}.sourceInfo
-            else
-              # FIXME: remove obsolete node.info.
-              fetchTree (node.info or {} // removeAttrs node.locked ["dir"]);
+      sourceInfo =
+        if overrides ? ${key} then
+          overrides.${key}.sourceInfo
+        else
+          # FIXME: remove obsolete node.info.
+          fetchTree (node.info or { } // removeAttrs node.locked [ "dir" ]);
 
-          subdir = overrides.${key}.dir or node.locked.dir or "";
+      subdir = overrides.${key}.dir or node.locked.dir or "";
 
-          outPath = sourceInfo + ((if subdir == "" then "" else "/") + subdir);
+      outPath = sourceInfo + ((if subdir == "" then "" else "/") + subdir);
 
-          flake = import (outPath + "/flake.nix");
+      flake = import (outPath + "/flake.nix");
 
-          inputs = builtins.mapAttrs
-            (inputName: inputSpec: allNodes.${resolveInput inputSpec})
-            (node.inputs or {});
+      inputs = builtins.mapAttrs (inputName: inputSpec: allNodes.${resolveInput inputSpec}) (
+        node.inputs or { }
+      );
 
-          outputs = flake.outputs (inputs // { self = result; });
+      outputs = flake.outputs (inputs // { self = result; });
 
-          result =
-            outputs
-            # We add the sourceInfo attribute for its metadata, as they are
-            # relevant metadata for the flake. However, the outPath of the
-            # sourceInfo does not necessarily match the outPath of the flake,
-            # as the flake may be in a subdirectory of a source.
-            # This is shadowed in the next //
-            // sourceInfo
-            // {
-              # This shadows the sourceInfo.outPath
-              inherit outPath;
+      result =
+        outputs
+        # We add the sourceInfo attribute for its metadata, as they are
+        # relevant metadata for the flake. However, the outPath of the
+        # sourceInfo does not necessarily match the outPath of the flake,
+        # as the flake may be in a subdirectory of a source.
+        # This is shadowed in the next //
+        // sourceInfo
+        // {
+          # This shadows the sourceInfo.outPath
+          inherit outPath;
 
-              inherit inputs; inherit outputs; inherit sourceInfo; _type = "flake";
-            };
+          inherit inputs;
+          inherit outputs;
+          inherit sourceInfo;
+          _type = "flake";
+        };
 
-        in
-          if node.flake or true then
-            assert builtins.isFunction flake.outputs;
-            result
-          else
-            sourceInfo
-      )
-      lockFile.nodes;
+    in
+    if node.flake or true then
+      assert builtins.isFunction flake.outputs;
+      result
+    else
+      sourceInfo
+  ) lockFile.nodes;
 
-in allNodes.${lockFile.root}
+in
+allNodes.${lockFile.root}

src/libexpr/fetchurl.nix

@@ -1,40 +1,72 @@
-{ system ? "" # obsolete
-, url
-, hash ? "" # an SRI hash
+{
+  system ? "", # obsolete
+  url,
+  hash ? "", # an SRI hash
 
-# Legacy hash specification
-, md5 ? "", sha1 ? "", sha256 ? "", sha512 ? ""
-, outputHash ?
-    if hash != "" then hash else if sha512 != "" then sha512 else if sha1 != "" then sha1 else if md5 != "" then md5 else sha256
-, outputHashAlgo ?
-    if hash != "" then "" else if sha512 != "" then "sha512" else if sha1 != "" then "sha1" else if md5 != "" then "md5" else "sha256"
+  # Legacy hash specification
+  md5 ? "",
+  sha1 ? "",
+  sha256 ? "",
+  sha512 ? "",
+  outputHash ?
+    if hash != "" then
+      hash
+    else if sha512 != "" then
+      sha512
+    else if sha1 != "" then
+      sha1
+    else if md5 != "" then
+      md5
+    else
+      sha256,
+  outputHashAlgo ?
+    if hash != "" then
+      ""
+    else if sha512 != "" then
+      "sha512"
+    else if sha1 != "" then
+      "sha1"
+    else if md5 != "" then
+      "md5"
+    else
+      "sha256",
 
-, executable ? false
-, unpack ? false
-, name ? baseNameOf (toString url)
-, impure ? false
+  executable ? false,
+  unpack ? false,
+  name ? baseNameOf (toString url),
+  impure ? false,
 }:
 
-derivation ({
-  builder = "builtin:fetchurl";
+derivation (
+  {
+    builder = "builtin:fetchurl";
 
-  # New-style output content requirements.
-  outputHashMode = if unpack || executable then "recursive" else "flat";
+    # New-style output content requirements.
+    outputHashMode = if unpack || executable then "recursive" else "flat";
 
-  inherit name url executable unpack;
+    inherit
+      name
+      url
+      executable
+      unpack
+      ;
 
-  system = "builtin";
+    system = "builtin";
 
-  # No need to double the amount of network traffic
-  preferLocalBuild = true;
+    # No need to double the amount of network traffic
+    preferLocalBuild = true;
 
-  # This attribute does nothing; it's here to avoid changing evaluation results.
-  impureEnvVars = [
-    "http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy"
-  ];
+    # This attribute does nothing; it's here to avoid changing evaluation results.
+    impureEnvVars = [
+      "http_proxy"
+      "https_proxy"
+      "ftp_proxy"
+      "all_proxy"
+      "no_proxy"
+    ];
 
-  # To make "nix-prefetch-url" work.
-  urls = [ url ];
-} // (if impure
-      then { __impure = true; }
-      else { inherit outputHashAlgo outputHash; }))
+    # To make "nix-prefetch-url" work.
+    urls = [ url ];
+  }
+  // (if impure then { __impure = true; } else { inherit outputHashAlgo outputHash; })
+)

src/libexpr/imported-drv-to-derivation.nix

@@ -1,21 +1,27 @@
-attrs @ { drvPath, outputs, name, ... }:
+attrs@{
+  drvPath,
+  outputs,
+  name,
+  ...
+}:
 
 let
 
-  commonAttrs = (builtins.listToAttrs outputsList) //
-    { all = map (x: x.value) outputsList;
-      inherit drvPath name;
-      type = "derivation";
-    };
+  commonAttrs = (builtins.listToAttrs outputsList) // {
+    all = map (x: x.value) outputsList;
+    inherit drvPath name;
+    type = "derivation";
+  };
 
-  outputToAttrListElement = outputName:
-    { name = outputName;
-      value = commonAttrs // {
-        outPath = builtins.getAttr outputName attrs;
-        inherit outputName;
-      };
+  outputToAttrListElement = outputName: {
+    name = outputName;
+    value = commonAttrs // {
+      outPath = builtins.getAttr outputName attrs;
+      inherit outputName;
     };
-    
+  };
+
   outputsList = map outputToAttrListElement outputs;
-    
-in (builtins.head outputsList).value
+
+in
+(builtins.head outputsList).value

src/libexpr/package.nix

@@ -1,37 +1,38 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
-, bison
-, flex
-, cmake # for resolving toml11 dep
+  meson,
+  ninja,
+  pkg-config,
+  bison,
+  flex,
+  cmake, # for resolving toml11 dep
 
-, nix-util
-, nix-store
-, nix-fetchers
-, boost
-, boehmgc
-, nlohmann_json
-, toml11
+  nix-util,
+  nix-store,
+  nix-fetchers,
+  boost,
+  boehmgc,
+  nlohmann_json,
+  toml11,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 
-# Whether to use garbage collection for the Nix language evaluator.
-#
-# If it is disabled, we just leak memory, but this is not as bad as it
-# sounds so long as evaluation just takes places within short-lived
-# processes. (When the process exits, the memory is reclaimed; it is
-# only leaked *within* the process.)
-#
-# Temporarily disabled on Windows because the `GC_throw_bad_alloc`
-# symbol is missing during linking.
-, enableGC ? !stdenv.hostPlatform.isWindows
+  # Whether to use garbage collection for the Nix language evaluator.
+  #
+  # If it is disabled, we just leak memory, but this is not as bad as it
+  # sounds so long as evaluation just takes places within short-lived
+  # processes. (When the process exits, the memory is reclaimed; it is
+  # only leaked *within* the process.)
+  #
+  # Temporarily disabled on Windows because the `GC_throw_bad_alloc`
+  # symbol is missing during linking.
+  enableGC ? !stdenv.hostPlatform.isWindows,
 }:
 
 let
@@ -58,7 +59,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "nix") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -93,14 +97,18 @@ mkMesonDerivation (finalAttrs: {
     (lib.mesonEnable "gc" enableGC)
   ];
 
-  env = {
-    # Needed for Meson to find Boost.
-    # https://github.com/NixOS/nixpkgs/issues/86131.
-    BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
-    BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
-  } // lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    {
+      # Needed for Meson to find Boost.
+      # https://github.com/NixOS/nixpkgs/issues/86131.
+      BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
+      BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
+    }
+    // lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/libexpr/primops/derivation.nix

@@ -26,27 +26,34 @@
   Note that `derivation` is very bare-bones, and provides almost no commands during the build.
   Most likely, you'll want to use functions like `stdenv.mkDerivation` in Nixpkgs to set up a basic environment.
 */
-drvAttrs @ { outputs ? [ "out" ], ... }:
+drvAttrs@{
+  outputs ? [ "out" ],
+  ...
+}:
 
 let
 
   strict = derivationStrict drvAttrs;
 
-  commonAttrs = drvAttrs // (builtins.listToAttrs outputsList) //
-    { all = map (x: x.value) outputsList;
+  commonAttrs =
+    drvAttrs
+    // (builtins.listToAttrs outputsList)
+    // {
+      all = map (x: x.value) outputsList;
       inherit drvAttrs;
     };
 
-  outputToAttrListElement = outputName:
-    { name = outputName;
-      value = commonAttrs // {
-        outPath = builtins.getAttr outputName strict;
-        drvPath = strict.drvPath;
-        type = "derivation";
-        inherit outputName;
-      };
+  outputToAttrListElement = outputName: {
+    name = outputName;
+    value = commonAttrs // {
+      outPath = builtins.getAttr outputName strict;
+      drvPath = strict.drvPath;
+      type = "derivation";
+      inherit outputName;
     };
+  };
 
   outputsList = map outputToAttrListElement outputs;
 
-in (builtins.head outputsList).value
+in
+(builtins.head outputsList).value

src/libfetchers/package.nix

@@ -1,21 +1,22 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
+  meson,
+  ninja,
+  pkg-config,
 
-, nix-util
-, nix-store
-, nlohmann_json
-, libgit2
-, man
+  nix-util,
+  nix-store,
+  nlohmann_json,
+  libgit2,
+  man,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -37,7 +38,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "hh") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -63,9 +67,12 @@ mkMesonDerivation (finalAttrs: {
       echo ${version} > ../../.version
     '';
 
-  env = lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/libflake/package.nix

@@ -1,23 +1,24 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
+  meson,
+  ninja,
+  pkg-config,
 
-, nix-util
-, nix-store
-, nix-fetchers
-, nix-expr
-, nlohmann_json
-, libgit2
-, man
+  nix-util,
+  nix-store,
+  nix-fetchers,
+  nix-expr,
+  nlohmann_json,
+  libgit2,
+  man,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -39,7 +40,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "hh") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -63,9 +67,12 @@ mkMesonDerivation (finalAttrs: {
       echo ${version} > ../../.version
     '';
 
-  env = lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/libmain-c/package.nix

@@ -1,20 +1,21 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
+  meson,
+  ninja,
+  pkg-config,
 
-, nix-util-c
-, nix-store
-, nix-store-c
-, nix-main
+  nix-util-c,
+  nix-store,
+  nix-store-c,
+  nix-main,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -38,7 +39,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "h") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -64,9 +68,12 @@ mkMesonDerivation (finalAttrs: {
   mesonFlags = [
   ];
 
-  env = lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/libmain/package.nix

@@ -1,20 +1,21 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
+  meson,
+  ninja,
+  pkg-config,
 
-, openssl
+  openssl,
 
-, nix-util
-, nix-store
+  nix-util,
+  nix-store,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -36,7 +37,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "hh") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -58,9 +62,12 @@ mkMesonDerivation (finalAttrs: {
       echo ${version} > ../../.version
     '';
 
-  env = lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/libstore-c/package.nix

@@ -1,18 +1,19 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
+  meson,
+  ninja,
+  pkg-config,
 
-, nix-util-c
-, nix-store
+  nix-util-c,
+  nix-store,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -36,7 +37,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "h") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -60,9 +64,12 @@ mkMesonDerivation (finalAttrs: {
   mesonFlags = [
   ];
 
-  env = lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/libstore/package.nix

@@ -1,29 +1,30 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
-, unixtools
-, darwin
+  meson,
+  ninja,
+  pkg-config,
+  unixtools,
+  darwin,
 
-, nix-util
-, boost
-, curl
-, aws-sdk-cpp
-, libseccomp
-, nlohmann_json
-, sqlite
+  nix-util,
+  boost,
+  curl,
+  aws-sdk-cpp,
+  libseccomp,
+  nlohmann_json,
+  sqlite,
 
-, busybox-sandbox-shell ? null
+  busybox-sandbox-shell ? null,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 
-, embeddedSandboxShell ? stdenv.hostPlatform.isStatic
+  embeddedSandboxShell ? stdenv.hostPlatform.isStatic,
 }:
 
 let
@@ -52,7 +53,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "sql") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -60,16 +64,18 @@ mkMesonDerivation (finalAttrs: {
     pkg-config
   ] ++ lib.optional embeddedSandboxShell unixtools.hexdump;
 
-  buildInputs = [
-    boost
-    curl
-    sqlite
-  ] ++ lib.optional stdenv.hostPlatform.isLinux libseccomp
+  buildInputs =
+    [
+      boost
+      curl
+      sqlite
+    ]
+    ++ lib.optional stdenv.hostPlatform.isLinux libseccomp
     # There have been issues building these dependencies
     ++ lib.optional stdenv.hostPlatform.isDarwin darwin.apple_sdk.libs.sandbox
-    ++ lib.optional (stdenv.hostPlatform == stdenv.buildPlatform && (stdenv.isLinux || stdenv.isDarwin))
-      aws-sdk-cpp
-  ;
+    ++ lib.optional (
+      stdenv.hostPlatform == stdenv.buildPlatform && (stdenv.isLinux || stdenv.isDarwin)
+    ) aws-sdk-cpp;
 
   propagatedBuildInputs = [
     nix-util
@@ -84,21 +90,27 @@ mkMesonDerivation (finalAttrs: {
       echo ${version} > ../../.version
     '';
 
-  mesonFlags = [
-    (lib.mesonEnable "seccomp-sandboxing" stdenv.hostPlatform.isLinux)
-    (lib.mesonBool "embedded-sandbox-shell" embeddedSandboxShell)
-  ] ++ lib.optionals stdenv.hostPlatform.isLinux [
-    (lib.mesonOption "sandbox-shell" "${busybox-sandbox-shell}/bin/busybox")
-  ];
+  mesonFlags =
+    [
+      (lib.mesonEnable "seccomp-sandboxing" stdenv.hostPlatform.isLinux)
+      (lib.mesonBool "embedded-sandbox-shell" embeddedSandboxShell)
+    ]
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
+      (lib.mesonOption "sandbox-shell" "${busybox-sandbox-shell}/bin/busybox")
+    ];
 
-  env = {
-    # Needed for Meson to find Boost.
-    # https://github.com/NixOS/nixpkgs/issues/86131.
-    BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
-    BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
-  } // lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    {
+      # Needed for Meson to find Boost.
+      # https://github.com/NixOS/nixpkgs/issues/86131.
+      BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
+      BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
+    }
+    // lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/libutil-c/package.nix

@@ -1,17 +1,18 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
+  meson,
+  ninja,
+  pkg-config,
 
-, nix-util
+  nix-util,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -35,7 +36,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "h") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -58,9 +62,12 @@ mkMesonDerivation (finalAttrs: {
   mesonFlags = [
   ];
 
-  env = lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/libutil/package.nix

@@ -1,23 +1,24 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
+  meson,
+  ninja,
+  pkg-config,
 
-, boost
-, brotli
-, libarchive
-, libcpuid
-, libsodium
-, nlohmann_json
-, openssl
+  boost,
+  brotli,
+  libarchive,
+  libcpuid,
+  libsodium,
+  nlohmann_json,
+  openssl,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -43,7 +44,10 @@ mkMesonDerivation (finalAttrs: {
     (fileset.fileFilter (file: file.hasExt "hh") ./.)
   ];
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     meson
@@ -55,8 +59,7 @@ mkMesonDerivation (finalAttrs: {
     brotli
     libsodium
     openssl
-  ] ++ lib.optional stdenv.hostPlatform.isx86_64 libcpuid
-  ;
+  ] ++ lib.optional stdenv.hostPlatform.isx86_64 libcpuid;
 
   propagatedBuildInputs = [
     boost
@@ -79,14 +82,18 @@ mkMesonDerivation (finalAttrs: {
     (lib.mesonEnable "cpuid" stdenv.hostPlatform.isx86_64)
   ];
 
-  env = {
-    # Needed for Meson to find Boost.
-    # https://github.com/NixOS/nixpkgs/issues/86131.
-    BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
-    BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
-  } // lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    {
+      # Needed for Meson to find Boost.
+      # https://github.com/NixOS/nixpkgs/issues/86131.
+      BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
+      BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
+    }
+    // lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/nix-channel/unpack-channel.nix

@@ -1,4 +1,8 @@
-{ name, channelName, src }:
+{
+  name,
+  channelName,
+  src,
+}:
 
 derivation {
   builder = "builtin:unpack-channel";

src/nix-env/buildenv.nix

@@ -8,13 +8,15 @@ derivation {
   inherit manifest;
 
   # !!! grmbl, need structured data for passing this in a clean way.
-  derivations =
-    map (d:
-      [ (d.meta.active or "true")
-        (d.meta.priority or 5)
-        (builtins.length d.outputs)
-      ] ++ map (output: builtins.getAttr output d) d.outputs)
-      derivations;
+  derivations = map (
+    d:
+    [
+      (d.meta.active or "true")
+      (d.meta.priority or 5)
+      (builtins.length d.outputs)
+    ]
+    ++ map (output: builtins.getAttr output d) d.outputs
+  ) derivations;
 
   # Building user environments remotely just causes huge amounts of
   # network traffic, so don't do that.

src/nix/package.nix

@@ -1,24 +1,25 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, releaseTools
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  releaseTools,
 
-, meson
-, ninja
-, pkg-config
+  meson,
+  ninja,
+  pkg-config,
 
-, nix-store
-, nix-expr
-, nix-main
-, nix-cmd
+  nix-store,
+  nix-expr,
+  nix-main,
+  nix-cmd,
 
-, rapidcheck
-, gtest
-, runCommand
+  rapidcheck,
+  gtest,
+  runCommand,
 
-# Configuration Options
+  # Configuration Options
 
-, version
+  version,
 }:
 
 let
@@ -30,58 +31,61 @@ mkMesonDerivation (finalAttrs: {
   inherit version;
 
   workDir = ./.;
-  fileset = fileset.unions ([
-    ../../build-utils-meson
-    ./build-utils-meson
-    ../../.version
-    ./.version
-    ./meson.build
-    # ./meson.options
-
-    # Symbolic links to other dirs
-    ./build-remote
-    ./doc
-    ./nix-build
-    ./nix-channel
-    ./nix-collect-garbage
-    ./nix-copy-closure
-    ./nix-env
-    ./nix-instantiate
-    ./nix-store
-
-    # Doc nix files for --help
-    ../../doc/manual/generate-manpage.nix
-    ../../doc/manual/utils.nix
-    ../../doc/manual/generate-settings.nix
-    ../../doc/manual/generate-store-info.nix
-
-    # Other files to be included as string literals
-    ../nix-channel/unpack-channel.nix
-    ../nix-env/buildenv.nix
-    ./get-env.sh
-    ./help-stores.md
-    ../../doc/manual/src/store/types/index.md.in
-    ./profiles.md
-    ../../doc/manual/src/command-ref/files/profiles.md
-
-    # Files
-  ] ++ lib.concatMap
-    (dir: [
-      (fileset.fileFilter (file: file.hasExt "cc") dir)
-      (fileset.fileFilter (file: file.hasExt "hh") dir)
-      (fileset.fileFilter (file: file.hasExt "md") dir)
-    ])
+  fileset = fileset.unions (
     [
-      ./.
-      ../build-remote
-      ../nix-build
-      ../nix-channel
-      ../nix-collect-garbage
-      ../nix-copy-closure
-      ../nix-env
-      ../nix-instantiate
-      ../nix-store
+      ../../build-utils-meson
+      ./build-utils-meson
+      ../../.version
+      ./.version
+      ./meson.build
+      # ./meson.options
+
+      # Symbolic links to other dirs
+      ./build-remote
+      ./doc
+      ./nix-build
+      ./nix-channel
+      ./nix-collect-garbage
+      ./nix-copy-closure
+      ./nix-env
+      ./nix-instantiate
+      ./nix-store
+
+      # Doc nix files for --help
+      ../../doc/manual/generate-manpage.nix
+      ../../doc/manual/utils.nix
+      ../../doc/manual/generate-settings.nix
+      ../../doc/manual/generate-store-info.nix
+
+      # Other files to be included as string literals
+      ../nix-channel/unpack-channel.nix
+      ../nix-env/buildenv.nix
+      ./get-env.sh
+      ./help-stores.md
+      ../../doc/manual/src/store/types/index.md.in
+      ./profiles.md
+      ../../doc/manual/src/command-ref/files/profiles.md
+
+      # Files
     ]
+    ++
+      lib.concatMap
+        (dir: [
+          (fileset.fileFilter (file: file.hasExt "cc") dir)
+          (fileset.fileFilter (file: file.hasExt "hh") dir)
+          (fileset.fileFilter (file: file.hasExt "md") dir)
+        ])
+        [
+          ./.
+          ../build-remote
+          ../nix-build
+          ../nix-channel
+          ../nix-collect-garbage
+          ../nix-copy-closure
+          ../nix-env
+          ../nix-instantiate
+          ../nix-store
+        ]
   );
 
   nativeBuildInputs = [
@@ -108,9 +112,12 @@ mkMesonDerivation (finalAttrs: {
   mesonFlags = [
   ];
 
-  env = lib.optionalAttrs (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")) {
-    LDFLAGS = "-fuse-ld=gold";
-  };
+  env =
+    lib.optionalAttrs
+      (stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux"))
+      {
+        LDFLAGS = "-fuse-ld=gold";
+      };
 
   separateDebugInfo = !stdenv.hostPlatform.isStatic;
 

src/perl/package.nix

@@ -1,77 +1,83 @@
-{ lib
-, stdenv
-, mkMesonDerivation
-, perl
-, perlPackages
-, meson
-, ninja
-, pkg-config
-, nix-store
-, darwin
-, version
-, curl
-, bzip2
-, libsodium
+{
+  lib,
+  stdenv,
+  mkMesonDerivation,
+  perl,
+  perlPackages,
+  meson,
+  ninja,
+  pkg-config,
+  nix-store,
+  darwin,
+  version,
+  curl,
+  bzip2,
+  libsodium,
 }:
 
 let
   inherit (lib) fileset;
 in
 
-perl.pkgs.toPerlModule (mkMesonDerivation (finalAttrs: {
-  pname = "nix-perl";
-  inherit version;
+perl.pkgs.toPerlModule (
+  mkMesonDerivation (finalAttrs: {
+    pname = "nix-perl";
+    inherit version;
 
-  workDir = ./.;
-  fileset = fileset.unions ([
-    ./.version
-    ../../.version
-    ./MANIFEST
-    ./lib
-    ./meson.build
-    ./meson.options
-  ] ++ lib.optionals finalAttrs.doCheck [
-    ./.yath.rc.in
-    ./t
-  ]);
+    workDir = ./.;
+    fileset = fileset.unions (
+      [
+        ./.version
+        ../../.version
+        ./MANIFEST
+        ./lib
+        ./meson.build
+        ./meson.options
+      ]
+      ++ lib.optionals finalAttrs.doCheck [
+        ./.yath.rc.in
+        ./t
+      ]
+    );
 
-  nativeBuildInputs = [
-    meson
-    ninja
-    pkg-config
-    perl
-    curl
-  ];
+    nativeBuildInputs = [
+      meson
+      ninja
+      pkg-config
+      perl
+      curl
+    ];
 
-  buildInputs = [
-    nix-store
-    bzip2
-    libsodium
-  ];
+    buildInputs = [
+      nix-store
+      bzip2
+      libsodium
+    ];
 
-  # `perlPackages.Test2Harness` is marked broken for Darwin
-  doCheck = !stdenv.isDarwin;
+    # `perlPackages.Test2Harness` is marked broken for Darwin
+    doCheck = !stdenv.isDarwin;
 
-  nativeCheckInputs = [
-    perlPackages.Test2Harness
-  ];
+    nativeCheckInputs = [
+      perlPackages.Test2Harness
+    ];
 
-  preConfigure =
-    # "Inline" .version so its not a symlink, and includes the suffix
-    ''
-      chmod u+w .version
-      echo ${finalAttrs.version} > .version
-    '';
+    preConfigure =
+      # "Inline" .version so its not a symlink, and includes the suffix
+      ''
+        chmod u+w .version
+        echo ${finalAttrs.version} > .version
+      '';
 
-  mesonFlags = [
-    (lib.mesonOption "dbi_path" "${perlPackages.DBI}/${perl.libPrefix}")
-    (lib.mesonOption "dbd_sqlite_path" "${perlPackages.DBDSQLite}/${perl.libPrefix}")
-    (lib.mesonEnable "tests" finalAttrs.doCheck)
-  ];
+    mesonFlags = [
+      (lib.mesonOption "dbi_path" "${perlPackages.DBI}/${perl.libPrefix}")
+      (lib.mesonOption "dbd_sqlite_path" "${perlPackages.DBDSQLite}/${perl.libPrefix}")
+      (lib.mesonEnable "tests" finalAttrs.doCheck)
+    ];
 
-  mesonCheckFlags = [
-    "--print-errorlogs"
-  ];
+    mesonCheckFlags = [
+      "--print-errorlogs"
+    ];
 
-  strictDeps = false;
-}))
+    strictDeps = false;
+  })
+)

tests/functional/big-derivation-attr.nix

@@ -1,6 +1,25 @@
 let
   sixteenBytes = "0123456789abcdef";
-  times16 = s: builtins.concatStringsSep "" [s s s s s s s s s s s s s s s s];
+  times16 =
+    s:
+    builtins.concatStringsSep "" [
+      s
+      s
+      s
+      s
+      s
+      s
+      s
+      s
+      s
+      s
+      s
+      s
+      s
+      s
+      s
+      s
+    ];
   exp = n: x: if n == 1 then x else times16 (exp (n - 1) x);
   sixteenMegabyte = exp 6 sixteenBytes;
 in

tests/functional/build-hook-ca-fixed.nix

@@ -4,24 +4,39 @@ with import ./config.nix;
 
 let
 
-  mkDerivation = args:
-    derivation ({
-      inherit system;
-      builder = busybox;
-      args = ["sh" "-e" args.builder or (builtins.toFile "builder-${args.name}.sh" ''
-        if [ -e "$NIX_ATTRS_SH_FILE" ]; then source $NIX_ATTRS_SH_FILE; fi;
-        eval "$buildCommand"
-      '')];
-      outputHashMode = "recursive";
-      outputHashAlgo = "sha256";
-    } // removeAttrs args ["builder" "meta" "passthru"])
-    // { meta = args.meta or {}; passthru = args.passthru or {}; };
+  mkDerivation =
+    args:
+    derivation (
+      {
+        inherit system;
+        builder = busybox;
+        args = [
+          "sh"
+          "-e"
+          args.builder or (builtins.toFile "builder-${args.name}.sh" ''
+            if [ -e "$NIX_ATTRS_SH_FILE" ]; then source $NIX_ATTRS_SH_FILE; fi;
+            eval "$buildCommand"
+          '')
+        ];
+        outputHashMode = "recursive";
+        outputHashAlgo = "sha256";
+      }
+      // removeAttrs args [
+        "builder"
+        "meta"
+        "passthru"
+      ]
+    )
+    // {
+      meta = args.meta or { };
+      passthru = args.passthru or { };
+    };
 
   input1 = mkDerivation {
     shell = busybox;
     name = "build-remote-input-1";
     buildCommand = "echo hi-input1; echo FOO > $out";
-    requiredSystemFeatures = ["foo"];
+    requiredSystemFeatures = [ "foo" ];
     outputHash = "sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc=";
   };
 
@@ -29,7 +44,7 @@ let
     shell = busybox;
     name = "build-remote-input-2";
     buildCommand = "echo hi; echo BAR > $out";
-    requiredSystemFeatures = ["bar"];
+    requiredSystemFeatures = [ "bar" ];
     outputHash = "sha256-XArauVH91AVwP9hBBQNlkX9ccuPpSYx9o0zeIHb6e+Q=";
   };
 
@@ -41,21 +56,20 @@ let
       read x < ${input2}
       echo $x BAZ > $out
     '';
-    requiredSystemFeatures = ["baz"];
+    requiredSystemFeatures = [ "baz" ];
     outputHash = "sha256-daKAcPp/+BYMQsVi/YYMlCKoNAxCNDsaivwSHgQqD2s=";
   };
 
 in
 
-  mkDerivation {
-    shell = busybox;
-    name = "build-remote";
-    passthru = { inherit input1 input2 input3; };
-    buildCommand =
-      ''
-        read x < ${input1}
-        read y < ${input3}
-        echo "$x $y" > $out
-      '';
-    outputHash = "sha256-5SxbkUw6xe2l9TE1uwCvTtTDysD1vhRor38OtDF0LqQ=";
-  }
+mkDerivation {
+  shell = busybox;
+  name = "build-remote";
+  passthru = { inherit input1 input2 input3; };
+  buildCommand = ''
+    read x < ${input1}
+    read y < ${input3}
+    echo "$x $y" > $out
+  '';
+  outputHash = "sha256-5SxbkUw6xe2l9TE1uwCvTtTDysD1vhRor38OtDF0LqQ=";
+}

tests/functional/build-hook.nix

@@ -1,39 +1,61 @@
-{ busybox, contentAddressed ? false }:
+{
+  busybox,
+  contentAddressed ? false,
+}:
 
 with import ./config.nix;
 
 let
 
-  caArgs = if contentAddressed then {
-      outputHashMode = "recursive";
-      outputHashAlgo = "sha256";
-      __contentAddressed = true;
-    } else {};
+  caArgs =
+    if contentAddressed then
+      {
+        outputHashMode = "recursive";
+        outputHashAlgo = "sha256";
+        __contentAddressed = true;
+      }
+    else
+      { };
 
-  mkDerivation = args:
-    derivation ({
-      inherit system;
-      builder = busybox;
-      args = ["sh" "-e" args.builder or (builtins.toFile "builder-${args.name}.sh" ''
-        if [ -e "$NIX_ATTRS_SH_FILE" ]; then source $NIX_ATTRS_SH_FILE; fi;
-        eval "$buildCommand"
-      '')];
-    } // removeAttrs args ["builder" "meta" "passthru"]
-    // caArgs)
-    // { meta = args.meta or {}; passthru = args.passthru or {}; };
+  mkDerivation =
+    args:
+    derivation (
+      {
+        inherit system;
+        builder = busybox;
+        args = [
+          "sh"
+          "-e"
+          args.builder or (builtins.toFile "builder-${args.name}.sh" ''
+            if [ -e "$NIX_ATTRS_SH_FILE" ]; then source $NIX_ATTRS_SH_FILE; fi;
+            eval "$buildCommand"
+          '')
+        ];
+      }
+      // removeAttrs args [
+        "builder"
+        "meta"
+        "passthru"
+      ]
+      // caArgs
+    )
+    // {
+      meta = args.meta or { };
+      passthru = args.passthru or { };
+    };
 
   input1 = mkDerivation {
     shell = busybox;
     name = "build-remote-input-1";
     buildCommand = "echo hi-input1; echo FOO > $out";
-    requiredSystemFeatures = ["foo"];
+    requiredSystemFeatures = [ "foo" ];
   };
 
   input2 = mkDerivation {
     shell = busybox;
     name = "build-remote-input-2";
     buildCommand = "echo hi; echo BAR > $out";
-    requiredSystemFeatures = ["bar"];
+    requiredSystemFeatures = [ "bar" ];
   };
 
   input3 = mkDerivation {
@@ -44,19 +66,18 @@ let
       read x < ${input2}
       echo $x BAZ > $out
     '';
-    requiredSystemFeatures = ["baz"];
+    requiredSystemFeatures = [ "baz" ];
   };
 
 in
 
-  mkDerivation {
-    shell = busybox;
-    name = "build-remote";
-    passthru = { inherit input1 input2 input3; };
-    buildCommand =
-      ''
-        read x < ${input1}
-        read y < ${input3}
-        echo "$x $y" > $out
-      '';
-  }
+mkDerivation {
+  shell = busybox;
+  name = "build-remote";
+  passthru = { inherit input1 input2 input3; };
+  buildCommand = ''
+    read x < ${input1}
+    read y < ${input3}
+    echo "$x $y" > $out
+  '';
+}

tests/functional/ca-shell.nix

@@ -1 +1,5 @@
-{ inNixShell ? false, ... }@args: import ./shell.nix (args // { contentAddressed = true; })
+{
+  inNixShell ? false,
+  ...
+}@args:
+import ./shell.nix (args // { contentAddressed = true; })

tests/functional/ca/content-addressed.nix

@@ -1,13 +1,21 @@
 with import ./config.nix;
 
-let mkCADerivation = args: mkDerivation ({
-    __contentAddressed = true;
-    outputHashMode = "recursive";
-    outputHashAlgo = "sha256";
-} // args);
+let
+  mkCADerivation =
+    args:
+    mkDerivation (
+      {
+        __contentAddressed = true;
+        outputHashMode = "recursive";
+        outputHashAlgo = "sha256";
+      }
+      // args
+    );
 in
 
-{ seed ? 0 }:
+{
+  seed ? 0,
+}:
 # A simple content-addressed derivation.
 # The derivation can be arbitrarily modified by passing a different `seed`,
 # but the output will always be the same
@@ -23,7 +31,11 @@ rec {
   };
   rootCA = mkCADerivation {
     name = "rootCA";
-    outputs = [ "out" "dev" "foo" ];
+    outputs = [
+      "out"
+      "dev"
+      "foo"
+    ];
     buildCommand = ''
       echo "building a CA derivation"
       echo "The seed is ${toString seed}"

tests/functional/ca/flake.nix

@@ -1,3 +1,3 @@
 {
-  outputs = { self }: import ./content-addressed.nix {};
+  outputs = { self }: import ./content-addressed.nix { };
 }

tests/functional/ca/nondeterministic.nix

@@ -1,10 +1,16 @@
 with import ./config.nix;
 
-let mkCADerivation = args: mkDerivation ({
-    __contentAddressed = true;
-    outputHashMode = "recursive";
-    outputHashAlgo = "sha256";
-} // args);
+let
+  mkCADerivation =
+    args:
+    mkDerivation (
+      {
+        __contentAddressed = true;
+        outputHashMode = "recursive";
+        outputHashAlgo = "sha256";
+      }
+      // args
+    );
 in
 
 rec {
@@ -15,13 +21,15 @@ rec {
       echo $(date) > $out/current-time
     '';
   };
-  dep = seed: mkCADerivation {
-    name = "dep";
-    inherit seed;
-    buildCommand = ''
-      echo ${currentTime} > $out
-    '';
-  };
+  dep =
+    seed:
+    mkCADerivation {
+      name = "dep";
+      inherit seed;
+      buildCommand = ''
+        echo ${currentTime} > $out
+      '';
+    };
   dep1 = dep 1;
   dep2 = dep 2;
   toplevel = mkCADerivation {
@@ -32,4 +40,3 @@ rec {
     '';
   };
 }
-

tests/functional/ca/racy.nix

@@ -1,7 +1,6 @@
 # A derivation that would certainly fail if several builders tried to
 # build it at once.
 
-
 with import ./config.nix;
 
 mkDerivation {

tests/functional/check-refs.nix

@@ -2,11 +2,16 @@ with import ./config.nix;
 
 rec {
 
-  dep = import ./dependencies.nix {};
+  dep = import ./dependencies.nix { };
 
-  makeTest = nr: args: mkDerivation ({
-    name = "check-refs-" + toString nr;
-  } // args);
+  makeTest =
+    nr: args:
+    mkDerivation (
+      {
+        name = "check-refs-" + toString nr;
+      }
+      // args
+    );
 
   src = builtins.toFile "aux-ref" "bla bla";
 
@@ -22,31 +27,31 @@ rec {
 
   test3 = makeTest 3 {
     builder = builtins.toFile "builder.sh" "mkdir $out; ln -s $dep $out/link";
-    allowedReferences = [];
+    allowedReferences = [ ];
     inherit dep;
   };
 
   test4 = makeTest 4 {
     builder = builtins.toFile "builder.sh" "mkdir $out; ln -s $dep $out/link";
-    allowedReferences = [dep];
+    allowedReferences = [ dep ];
     inherit dep;
   };
 
   test5 = makeTest 5 {
     builder = builtins.toFile "builder.sh" "mkdir $out";
-    allowedReferences = [];
+    allowedReferences = [ ];
     inherit dep;
   };
 
   test6 = makeTest 6 {
     builder = builtins.toFile "builder.sh" "mkdir $out; ln -s $out $out/link";
-    allowedReferences = [];
+    allowedReferences = [ ];
     inherit dep;
   };
 
   test7 = makeTest 7 {
     builder = builtins.toFile "builder.sh" "mkdir $out; ln -s $out $out/link";
-    allowedReferences = ["out"];
+    allowedReferences = [ "out" ];
     inherit dep;
   };
 
@@ -58,19 +63,19 @@ rec {
   test9 = makeTest 9 {
     builder = builtins.toFile "builder.sh" "mkdir $out; ln -s $dep $out/link";
     inherit dep;
-    disallowedReferences = [dep];
+    disallowedReferences = [ dep ];
   };
 
   test10 = makeTest 10 {
     builder = builtins.toFile "builder.sh" "mkdir $out; echo $test5; ln -s $dep $out/link";
     inherit dep test5;
-    disallowedReferences = [test5];
+    disallowedReferences = [ test5 ];
   };
 
   test11 = makeTest 11 {
     __structuredAttrs = true;
     unsafeDiscardReferences.out = true;
-    outputChecks.out.allowedReferences = [];
+    outputChecks.out.allowedReferences = [ ];
     buildCommand = ''echo ${dep} > "''${outputs[out]}"'';
   };
 

tests/functional/check-reqs.nix

@@ -22,36 +22,48 @@ rec {
     '';
   };
 
-  makeTest = nr: allowreqs: mkDerivation {
-    name = "check-reqs-" + toString nr;
-    inherit deps;
-    builder = builtins.toFile "builder.sh" ''
-      mkdir $out
-      ln -s $deps $out/depdir1
-    '';
-    allowedRequisites = allowreqs;
-  };
+  makeTest =
+    nr: allowreqs:
+    mkDerivation {
+      name = "check-reqs-" + toString nr;
+      inherit deps;
+      builder = builtins.toFile "builder.sh" ''
+        mkdir $out
+        ln -s $deps $out/depdir1
+      '';
+      allowedRequisites = allowreqs;
+    };
 
   # When specifying all the requisites, the build succeeds.
-  test1 = makeTest 1 [ dep1 dep2 deps ];
+  test1 = makeTest 1 [
+    dep1
+    dep2
+    deps
+  ];
 
   # But missing anything it fails.
-  test2 = makeTest 2 [ dep2 deps ];
-  test3 = makeTest 3 [ dep1 deps ];
+  test2 = makeTest 2 [
+    dep2
+    deps
+  ];
+  test3 = makeTest 3 [
+    dep1
+    deps
+  ];
   test4 = makeTest 4 [ deps ];
-  test5 = makeTest 5 [];
+  test5 = makeTest 5 [ ];
 
   test6 = mkDerivation {
     name = "check-reqs";
     inherit deps;
     builder = builtins.toFile "builder.sh" "mkdir $out; ln -s $deps $out/depdir1";
-    disallowedRequisites = [dep1];
+    disallowedRequisites = [ dep1 ];
   };
 
   test7 = mkDerivation {
     name = "check-reqs";
     inherit deps;
     builder = builtins.toFile "builder.sh" "mkdir $out; ln -s $deps $out/depdir1";
-    disallowedRequisites = [test1];
+    disallowedRequisites = [ test1 ];
   };
 }

tests/functional/check.nix

@@ -1,4 +1,6 @@
-{checkBuildId ? 0}:
+{
+  checkBuildId ? 0,
+}:
 
 with import ./config.nix;
 
@@ -6,41 +8,38 @@ with import ./config.nix;
   nondeterministic = mkDerivation {
     inherit checkBuildId;
     name = "nondeterministic";
-    buildCommand =
-      ''
-        mkdir $out
-        date +%s.%N > $out/date
-        echo "CHECK_TMPDIR=$TMPDIR"
-        echo "checkBuildId=$checkBuildId"
-        echo "$checkBuildId" > $TMPDIR/checkBuildId
-      '';
+    buildCommand = ''
+      mkdir $out
+      date +%s.%N > $out/date
+      echo "CHECK_TMPDIR=$TMPDIR"
+      echo "checkBuildId=$checkBuildId"
+      echo "$checkBuildId" > $TMPDIR/checkBuildId
+    '';
   };
 
   deterministic = mkDerivation {
     inherit checkBuildId;
     name = "deterministic";
-    buildCommand =
-      ''
-        mkdir $out
-        echo date > $out/date
-        echo "CHECK_TMPDIR=$TMPDIR"
-        echo "checkBuildId=$checkBuildId"
-        echo "$checkBuildId" > $TMPDIR/checkBuildId
-      '';
+    buildCommand = ''
+      mkdir $out
+      echo date > $out/date
+      echo "CHECK_TMPDIR=$TMPDIR"
+      echo "checkBuildId=$checkBuildId"
+      echo "$checkBuildId" > $TMPDIR/checkBuildId
+    '';
   };
 
   failed = mkDerivation {
     inherit checkBuildId;
     name = "failed";
-    buildCommand =
-      ''
-        mkdir $out
-        echo date > $out/date
-        echo "CHECK_TMPDIR=$TMPDIR"
-        echo "checkBuildId=$checkBuildId"
-        echo "$checkBuildId" > $TMPDIR/checkBuildId
-        false
-      '';
+    buildCommand = ''
+      mkdir $out
+      echo date > $out/date
+      echo "CHECK_TMPDIR=$TMPDIR"
+      echo "checkBuildId=$checkBuildId"
+      echo "$checkBuildId" > $TMPDIR/checkBuildId
+      false
+    '';
   };
 
   hashmismatch = import <nix/fetchurl.nix> {

tests/functional/dependencies.nix

@@ -1,4 +1,6 @@
-{ hashInvalidator ? "" }:
+{
+  hashInvalidator ? "",
+}:
 with import ./config.nix;
 
 let

tests/functional/derivation/advanced-attributes-defaults.nix

@@ -2,5 +2,8 @@ derivation {
   name = "advanced-attributes-defaults";
   system = "my-system";
   builder = "/bin/bash";
-  args = [ "-c" "echo hello > $out" ];
+  args = [
+    "-c"
+    "echo hello > $out"
+  ];
 }

tests/functional/derivation/advanced-attributes-structured-attrs-defaults.nix

@@ -2,7 +2,13 @@ derivation {
   name = "advanced-attributes-structured-attrs-defaults";
   system = "my-system";
   builder = "/bin/bash";
-  args = [ "-c" "echo hello > $out" ];
-  outputs = [ "out" "dev" ];
+  args = [
+    "-c"
+    "echo hello > $out"
+  ];
+  outputs = [
+    "out"
+    "dev"
+  ];
   __structuredAttrs = true;
 }

tests/functional/derivation/advanced-attributes-structured-attrs.nix

@@ -4,42 +4,58 @@ let
     inherit system;
     name = "foo";
     builder = "/bin/bash";
-    args = ["-c" "echo foo > $out"];
+    args = [
+      "-c"
+      "echo foo > $out"
+    ];
   };
   bar = derivation {
     inherit system;
     name = "bar";
     builder = "/bin/bash";
-    args = ["-c" "echo bar > $out"];
+    args = [
+      "-c"
+      "echo bar > $out"
+    ];
   };
 in
 derivation {
   inherit system;
   name = "advanced-attributes-structured-attrs";
   builder = "/bin/bash";
-  args = [ "-c" "echo hello > $out" ];
+  args = [
+    "-c"
+    "echo hello > $out"
+  ];
   __sandboxProfile = "sandcastle";
   __noChroot = true;
-  __impureHostDeps = ["/usr/bin/ditto"];
-  impureEnvVars = ["UNICORN"];
+  __impureHostDeps = [ "/usr/bin/ditto" ];
+  impureEnvVars = [ "UNICORN" ];
   __darwinAllowLocalNetworking = true;
-  outputs = [ "out" "bin" "dev" ];
+  outputs = [
+    "out"
+    "bin"
+    "dev"
+  ];
   __structuredAttrs = true;
   outputChecks = {
     out = {
-      allowedReferences = [foo];
-      allowedRequisites = [foo];
+      allowedReferences = [ foo ];
+      allowedRequisites = [ foo ];
     };
     bin = {
-      disallowedReferences = [bar];
-      disallowedRequisites = [bar];
+      disallowedReferences = [ bar ];
+      disallowedRequisites = [ bar ];
     };
     dev = {
       maxSize = 789;
       maxClosureSize = 5909;
     };
   };
-  requiredSystemFeatures = ["rainbow" "uid-range"];
+  requiredSystemFeatures = [
+    "rainbow"
+    "uid-range"
+  ];
   preferLocalBuild = true;
   allowSubstitutes = false;
 }

tests/functional/derivation/advanced-attributes.nix

@@ -4,30 +4,42 @@ let
     inherit system;
     name = "foo";
     builder = "/bin/bash";
-    args = ["-c" "echo foo > $out"];
+    args = [
+      "-c"
+      "echo foo > $out"
+    ];
   };
   bar = derivation {
     inherit system;
     name = "bar";
     builder = "/bin/bash";
-    args = ["-c" "echo bar > $out"];
+    args = [
+      "-c"
+      "echo bar > $out"
+    ];
   };
 in
 derivation {
   inherit system;
   name = "advanced-attributes";
   builder = "/bin/bash";
-  args = [ "-c" "echo hello > $out" ];
+  args = [
+    "-c"
+    "echo hello > $out"
+  ];
   __sandboxProfile = "sandcastle";
   __noChroot = true;
-  __impureHostDeps = ["/usr/bin/ditto"];
-  impureEnvVars = ["UNICORN"];
+  __impureHostDeps = [ "/usr/bin/ditto" ];
+  impureEnvVars = [ "UNICORN" ];
   __darwinAllowLocalNetworking = true;
-  allowedReferences = [foo];
-  allowedRequisites = [foo];
-  disallowedReferences = [bar];
-  disallowedRequisites = [bar];
-  requiredSystemFeatures = ["rainbow" "uid-range"];
+  allowedReferences = [ foo ];
+  allowedRequisites = [ foo ];
+  disallowedReferences = [ bar ];
+  disallowedRequisites = [ bar ];
+  requiredSystemFeatures = [
+    "rainbow"
+    "uid-range"
+  ];
   preferLocalBuild = true;
   allowSubstitutes = false;
 }

tests/functional/dyn-drv/recursive-mod-json.nix

@@ -1,6 +1,8 @@
 with import ./config.nix;
 
-let innerName = "foo"; in
+let
+  innerName = "foo";
+in
 
 mkDerivation rec {
   name = "${innerName}.drv";

tests/functional/export-graph.nix

@@ -2,28 +2,33 @@ with import ./config.nix;
 
 rec {
 
-  printRefs =
-    ''
-      echo $exportReferencesGraph
-      while read path; do
-          read drv
-          read nrRefs
-          echo "$path has $nrRefs references"
-          echo "$path" >> $out
-          for ((n = 0; n < $nrRefs; n++)); do read ref; echo "ref $ref"; test -e "$ref"; done
-      done < refs
-    '';
+  printRefs = ''
+    echo $exportReferencesGraph
+    while read path; do
+        read drv
+        read nrRefs
+        echo "$path has $nrRefs references"
+        echo "$path" >> $out
+        for ((n = 0; n < $nrRefs; n++)); do read ref; echo "ref $ref"; test -e "$ref"; done
+    done < refs
+  '';
 
   foo."bar.runtimeGraph" = mkDerivation {
     name = "dependencies";
     builder = builtins.toFile "build-graph-builder" "${printRefs}";
-    exportReferencesGraph = ["refs" (import ./dependencies.nix {})];
+    exportReferencesGraph = [
+      "refs"
+      (import ./dependencies.nix { })
+    ];
   };
 
   foo."bar.buildGraph" = mkDerivation {
     name = "dependencies";
     builder = builtins.toFile "build-graph-builder" "${printRefs}";
-    exportReferencesGraph = ["refs" (import ./dependencies.nix {}).drvPath];
+    exportReferencesGraph = [
+      "refs"
+      (import ./dependencies.nix { }).drvPath
+    ];
   };
 
 }

tests/functional/failing.nix

@@ -2,16 +2,29 @@
 with import ./config.nix;
 let
 
-  mkDerivation = args:
-    derivation ({
-      inherit system;
-      builder = busybox;
-      args = ["sh" "-e" args.builder or (builtins.toFile "builder-${args.name}.sh" ''
-        if [ -e "$NIX_ATTRS_SH_FILE" ]; then source $NIX_ATTRS_SH_FILE; fi;
-        eval "$buildCommand"
-      '')];
-    } // removeAttrs args ["builder" "meta"])
-    // { meta = args.meta or {}; };
+  mkDerivation =
+    args:
+    derivation (
+      {
+        inherit system;
+        builder = busybox;
+        args = [
+          "sh"
+          "-e"
+          args.builder or (builtins.toFile "builder-${args.name}.sh" ''
+            if [ -e "$NIX_ATTRS_SH_FILE" ]; then source $NIX_ATTRS_SH_FILE; fi;
+            eval "$buildCommand"
+          '')
+        ];
+      }
+      // removeAttrs args [
+        "builder"
+        "meta"
+      ]
+    )
+    // {
+      meta = args.meta or { };
+    };
 in
 {
 

tests/functional/filter-source.nix

@@ -4,9 +4,12 @@ mkDerivation {
   name = "filter";
   builder = builtins.toFile "builder" "ln -s $input $out";
   input =
-    let filter = path: type:
-      type != "symlink"
-      && baseNameOf path != "foo"
-      && !((import ./lang/lib.nix).hasSuffix ".bak" (baseNameOf path));
-    in builtins.filterSource filter ((builtins.getEnv "TEST_ROOT") + "/filterin");
+    let
+      filter =
+        path: type:
+        type != "symlink"
+        && baseNameOf path != "foo"
+        && !((import ./lang/lib.nix).hasSuffix ".bak" (baseNameOf path));
+    in
+    builtins.filterSource filter ((builtins.getEnv "TEST_ROOT") + "/filterin");
 }

tests/functional/fixed.nix

@@ -2,15 +2,20 @@ with import ./config.nix;
 
 rec {
 
-  f2 = dummy: builder: mode: algo: hash: mkDerivation {
-    name = "fixed";
-    inherit builder;
-    outputHashMode = mode;
-    outputHashAlgo = algo;
-    outputHash = hash;
-    inherit dummy;
-    impureEnvVars = ["IMPURE_VAR1" "IMPURE_VAR2"];
-  };
+  f2 =
+    dummy: builder: mode: algo: hash:
+    mkDerivation {
+      name = "fixed";
+      inherit builder;
+      outputHashMode = mode;
+      outputHashAlgo = algo;
+      outputHash = hash;
+      inherit dummy;
+      impureEnvVars = [
+        "IMPURE_VAR1"
+        "IMPURE_VAR2"
+      ];
+    };
 
   f = f2 "";
 
@@ -37,7 +42,8 @@ rec {
   ];
 
   sameAsAdd =
-    f ./fixed.builder2.sh "recursive" "sha256" "1ixr6yd3297ciyp9im522dfxpqbkhcw0pylkb2aab915278fqaik";
+    f ./fixed.builder2.sh "recursive" "sha256"
+      "1ixr6yd3297ciyp9im522dfxpqbkhcw0pylkb2aab915278fqaik";
 
   bad = [
     (f ./fixed.builder1.sh "flat" "md5" "0ddd8be4b179a529afa5f2ffae4b9858")

tests/functional/fod-failing.nix

@@ -2,38 +2,34 @@ with import ./config.nix;
 rec {
   x1 = mkDerivation {
     name = "x1";
-    builder = builtins.toFile "builder.sh"
-      ''
-        echo $name > $out
-      '';
+    builder = builtins.toFile "builder.sh" ''
+      echo $name > $out
+    '';
     outputHashMode = "recursive";
     outputHash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
   };
   x2 = mkDerivation {
     name = "x2";
-    builder = builtins.toFile "builder.sh"
-      ''
-        echo $name > $out
-      '';
+    builder = builtins.toFile "builder.sh" ''
+      echo $name > $out
+    '';
     outputHashMode = "recursive";
     outputHash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
   };
   x3 = mkDerivation {
     name = "x3";
-    builder = builtins.toFile "builder.sh"
-      ''
-        echo $name > $out
-      '';
+    builder = builtins.toFile "builder.sh" ''
+      echo $name > $out
+    '';
     outputHashMode = "recursive";
     outputHash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
   };
   x4 = mkDerivation {
     name = "x4";
     inherit x2 x3;
-    builder = builtins.toFile "builder.sh"
-      ''
-        echo $x2 $x3
-        exit 1
-      '';
+    builder = builtins.toFile "builder.sh" ''
+      echo $x2 $x3
+      exit 1
+    '';
   };
 }

tests/functional/gc-concurrent.nix

@@ -1,6 +1,8 @@
 with import ./config.nix;
 
-{ lockFifo ? null }:
+{
+  lockFifo ? null,
+}:
 
 rec {
 

tests/functional/hash-check.nix

@@ -4,14 +4,22 @@ let {
     name = "dependencies-input-1";
     system = "i086-msdos";
     builder = "/bar/sh";
-    args = ["-e" "-x" ./dummy];
+    args = [
+      "-e"
+      "-x"
+      ./dummy
+    ];
   };
 
   input2 = derivation {
     name = "dependencies-input-2";
     system = "i086-msdos";
     builder = "/bar/sh";
-    args = ["-e" "-x" ./dummy];
+    args = [
+      "-e"
+      "-x"
+      ./dummy
+    ];
     outputHashMode = "recursive";
     outputHashAlgo = "md5";
     outputHash = "ffffffffffffffffffffffffffffffff";
@@ -21,9 +29,13 @@ let {
     name = "dependencies";
     system = "i086-msdos";
     builder = "/bar/sh";
-    args = ["-e" "-x" (./dummy  + "/FOOBAR/../.")];
+    args = [
+      "-e"
+      "-x"
+      (./dummy + "/FOOBAR/../.")
+    ];
     input1 = input1 + "/.";
     inherit input2;
   };
 
-}
+}

tests/functional/hermetic.nix

@@ -1,31 +1,51 @@
-{ busybox
-, seed
-# If we want the final derivation output to have references to its
-# dependencies. Some tests need/want this, other don't.
-, withFinalRefs ? false
+{
+  busybox,
+  seed,
+  # If we want the final derivation output to have references to its
+  # dependencies. Some tests need/want this, other don't.
+  withFinalRefs ? false,
 }:
 
 with import ./config.nix;
 
 let
   contentAddressedByDefault = builtins.getEnv "NIX_TESTS_CA_BY_DEFAULT" == "1";
-  caArgs = if contentAddressedByDefault then {
-    __contentAddressed = true;
-    outputHashMode = "recursive";
-    outputHashAlgo = "sha256";
-  } else {};
+  caArgs =
+    if contentAddressedByDefault then
+      {
+        __contentAddressed = true;
+        outputHashMode = "recursive";
+        outputHashAlgo = "sha256";
+      }
+    else
+      { };
 
-  mkDerivation = args:
-    derivation ({
-      inherit system;
-      builder = busybox;
-      args = ["sh" "-e" args.builder or (builtins.toFile "builder-${args.name}.sh" ''
-        if [ -e "$NIX_ATTRS_SH_FILE" ]; then source $NIX_ATTRS_SH_FILE; fi;
-        eval "$buildCommand"
-      '')];
-    } // removeAttrs args ["builder" "meta" "passthru"]
-    // caArgs)
-    // { meta = args.meta or {}; passthru = args.passthru or {}; };
+  mkDerivation =
+    args:
+    derivation (
+      {
+        inherit system;
+        builder = busybox;
+        args = [
+          "sh"
+          "-e"
+          args.builder or (builtins.toFile "builder-${args.name}.sh" ''
+            if [ -e "$NIX_ATTRS_SH_FILE" ]; then source $NIX_ATTRS_SH_FILE; fi;
+            eval "$buildCommand"
+          '')
+        ];
+      }
+      // removeAttrs args [
+        "builder"
+        "meta"
+        "passthru"
+      ]
+      // caArgs
+    )
+    // {
+      meta = args.meta or { };
+      passthru = args.passthru or { };
+    };
 
   input1 = mkDerivation {
     shell = busybox;
@@ -51,14 +71,15 @@ let
 
 in
 
-  mkDerivation {
-    shell = busybox;
-    name = "hermetic";
-    passthru = { inherit input1 input2 input3; };
-    buildCommand =
-      ''
-        read x < ${input1}
-        read y < ${input3}
-        echo ${if (builtins.trace withFinalRefs withFinalRefs) then "${input1} ${input3}" else ""} "$x $y" > $out
-      '';
-  }
+mkDerivation {
+  shell = busybox;
+  name = "hermetic";
+  passthru = { inherit input1 input2 input3; };
+  buildCommand = ''
+    read x < ${input1}
+    read y < ${input3}
+    echo ${
+      if (builtins.trace withFinalRefs withFinalRefs) then "${input1} ${input3}" else ""
+    } "$x $y" > $out
+  '';
+}

tests/functional/ifd.nix

@@ -1,10 +1,8 @@
 with import ./config.nix;
-import (
-  mkDerivation {
-    name = "foo";
-    bla = import ./dependencies.nix {};
-    buildCommand = "
+import (mkDerivation {
+  name = "foo";
+  bla = import ./dependencies.nix { };
+  buildCommand = "
       echo \\\"hi\\\" > $out
     ";
-  }
-)
+})

tests/functional/import-derivation.nix

@@ -4,10 +4,9 @@ let
 
   bar = mkDerivation {
     name = "bar";
-    builder = builtins.toFile "builder.sh"
-      ''
-        echo 'builtins.add 123 456' > $out
-      '';
+    builder = builtins.toFile "builder.sh" ''
+      echo 'builtins.add 123 456' > $out
+    '';
   };
 
   value =
@@ -19,8 +18,7 @@ in
 
 mkDerivation {
   name = "foo";
-  builder = builtins.toFile "builder.sh"
-    ''
-      echo -n FOO${toString value} > $out
-    '';
+  builder = builtins.toFile "builder.sh" ''
+    echo -n FOO${toString value} > $out
+  '';
 }

tests/functional/import-from-derivation.nix

@@ -3,10 +3,9 @@ with import <config>;
 rec {
   bar = mkDerivation {
     name = "bar";
-    builder = builtins.toFile "builder.sh"
-      ''
-        echo 'builtins.add 123 456' > $out
-      '';
+    builder = builtins.toFile "builder.sh" ''
+      echo 'builtins.add 123 456' > $out
+    '';
   };
 
   value =
@@ -16,19 +15,17 @@ rec {
 
   result = mkDerivation {
     name = "foo";
-    builder = builtins.toFile "builder.sh"
-      ''
-        echo -n FOO${toString value} > $out
-      '';
+    builder = builtins.toFile "builder.sh" ''
+      echo -n FOO${toString value} > $out
+    '';
   };
 
   addPath = mkDerivation {
     name = "add-path";
     src = builtins.filterSource (path: type: true) result;
-    builder = builtins.toFile "builder.sh"
-      ''
-        echo -n BLA$(cat $src) > $out
-      '';
+    builder = builtins.toFile "builder.sh" ''
+      echo -n BLA$(cat $src) > $out
+    '';
   };
 
   step1 = mkDerivation {

tests/functional/impure-derivations.nix

@@ -4,60 +4,58 @@ rec {
 
   impure = mkDerivation {
     name = "impure";
-    outputs = [ "out" "stuff" ];
-    buildCommand =
-      ''
-        echo impure
-        x=$(< $TEST_ROOT/counter)
-        mkdir $out $stuff
-        echo $x > $out/n
-        ln -s $out/n $stuff/bla
-        printf $((x + 1)) > $TEST_ROOT/counter
-      '';
+    outputs = [
+      "out"
+      "stuff"
+    ];
+    buildCommand = ''
+      echo impure
+      x=$(< $TEST_ROOT/counter)
+      mkdir $out $stuff
+      echo $x > $out/n
+      ln -s $out/n $stuff/bla
+      printf $((x + 1)) > $TEST_ROOT/counter
+    '';
     __impure = true;
     impureEnvVars = [ "TEST_ROOT" ];
   };
 
   impureOnImpure = mkDerivation {
     name = "impure-on-impure";
-    buildCommand =
-      ''
-        echo impure-on-impure
-        x=$(< ${impure}/n)
-        mkdir $out
-        printf X$x > $out/n
-        ln -s ${impure.stuff} $out/symlink
-        ln -s $out $out/self
-      '';
+    buildCommand = ''
+      echo impure-on-impure
+      x=$(< ${impure}/n)
+      mkdir $out
+      printf X$x > $out/n
+      ln -s ${impure.stuff} $out/symlink
+      ln -s $out $out/self
+    '';
     __impure = true;
   };
 
   # This is not allowed.
   inputAddressed = mkDerivation {
     name = "input-addressed";
-    buildCommand =
-      ''
-        cat ${impure} > $out
-      '';
+    buildCommand = ''
+      cat ${impure} > $out
+    '';
   };
 
   contentAddressed = mkDerivation {
     name = "content-addressed";
-    buildCommand =
-      ''
-        echo content-addressed
-        x=$(< ${impureOnImpure}/n)
-        printf ''${x:0:1} > $out
-      '';
+    buildCommand = ''
+      echo content-addressed
+      x=$(< ${impureOnImpure}/n)
+      printf ''${x:0:1} > $out
+    '';
     outputHashMode = "recursive";
     outputHash = "sha256-eBYxcgkuWuiqs4cKNgKwkb3vY/HR0vVsJnqe8itJGcQ=";
   };
 
   inputAddressedAfterCA = mkDerivation {
     name = "input-addressed-after-ca";
-    buildCommand =
-      ''
-        cat ${contentAddressed} > $out
-      '';
+    buildCommand = ''
+      cat ${contentAddressed} > $out
+    '';
   };
 }

tests/functional/lang-gc/issue-11141-gc-coroutine-test.nix

@@ -1,4 +1,3 @@
-
 # Run:
 # GC_INITIAL_HEAP_SIZE=$[1024 * 1024] NIX_SHOW_STATS=1 nix eval -f gc-coroutine-test.nix  -vvvv
 
@@ -11,55 +10,56 @@ let
   # Generate a tree of numbers, n deep, such that the numbers add up to (1 + salt) * 10^n.
   # The salting makes the numbers all different, increasing the likelihood of catching
   # any memory corruptions that might be caused by the GC or otherwise.
-  garbage = salt: n:
-    if n == 0
-    then [(1 + salt)]
-    else [
-      (garbage (10 * salt + 1) (n - 1))
-      (garbage (10 * salt - 1) (n - 1))
-      (garbage (10 * salt + 2) (n - 1))
-      (garbage (10 * salt - 2) (n - 1))
-      (garbage (10 * salt + 3) (n - 1))
-      (garbage (10 * salt - 3) (n - 1))
-      (garbage (10 * salt + 4) (n - 1))
-      (garbage (10 * salt - 4) (n - 1))
-      (garbage (10 * salt + 5) (n - 1))
-      (garbage (10 * salt - 5) (n - 1))
-    ];
+  garbage =
+    salt: n:
+    if n == 0 then
+      [ (1 + salt) ]
+    else
+      [
+        (garbage (10 * salt + 1) (n - 1))
+        (garbage (10 * salt - 1) (n - 1))
+        (garbage (10 * salt + 2) (n - 1))
+        (garbage (10 * salt - 2) (n - 1))
+        (garbage (10 * salt + 3) (n - 1))
+        (garbage (10 * salt - 3) (n - 1))
+        (garbage (10 * salt + 4) (n - 1))
+        (garbage (10 * salt - 4) (n - 1))
+        (garbage (10 * salt + 5) (n - 1))
+        (garbage (10 * salt - 5) (n - 1))
+      ];
 
-  pow = base: n:
-    if n == 0
-    then 1
-    else base * (pow base (n - 1));
+  pow = base: n: if n == 0 then 1 else base * (pow base (n - 1));
 
-  sumNestedLists = l:
-    if isList l
-    then foldl' (a: b: a + sumNestedLists b) 0 l
-    else l;
+  sumNestedLists = l: if isList l then foldl' (a: b: a + sumNestedLists b) 0 l else l;
 
 in
-  assert sumNestedLists (garbage 0 3) == pow 10 3;
-  assert sumNestedLists (garbage 0 6) == pow 10 6;
-  builtins.foldl'
-    (a: b:
-      assert
-        "${
-          builtins.path {
-            path = ./src;
-            filter = path: type:
-              # We're not doing common subexpression elimination, so this reallocates
-              # the fairly big tree over and over, producing a lot of garbage during
-              # source filtering, whose filter runs in a coroutine.
-              assert sumNestedLists (garbage 0 3) == pow 10 3;
-              true;
-          }
-        }"
-          == "${./src}";
+assert sumNestedLists (garbage 0 3) == pow 10 3;
+assert sumNestedLists (garbage 0 6) == pow 10 6;
+builtins.foldl'
+  (
+    a: b:
+    assert
+      "${builtins.path {
+        path = ./src;
+        filter =
+          path: type:
+          # We're not doing common subexpression elimination, so this reallocates
+          # the fairly big tree over and over, producing a lot of garbage during
+          # source filtering, whose filter runs in a coroutine.
+          assert sumNestedLists (garbage 0 3) == pow 10 3;
+          true;
+      }}" == "${./src}";
 
-      # These asserts don't seem necessary, as the lambda value get corrupted first
-      assert a.okay;
-      assert b.okay;
-      { okay = true; }
-    )
+    # These asserts don't seem necessary, as the lambda value get corrupted first
+    assert a.okay;
+    assert b.okay;
+    {
+      okay = true;
+    }
+  )
+  { okay = true; }
+  [
     { okay = true; }
-    [ { okay = true; } { okay = true; } { okay = true; } ]
+    { okay = true; }
+    { okay = true; }
+  ]

tests/functional/lang/eval-fail-addDrvOutputDependencies-multi-elem-context.nix

@@ -3,16 +3,23 @@ let
     name = "fail";
     builder = "/bin/false";
     system = "x86_64-linux";
-    outputs = [ "out" "foo" ];
+    outputs = [
+      "out"
+      "foo"
+    ];
   };
 
   drv1 = derivation {
     name = "fail-2";
     builder = "/bin/false";
     system = "x86_64-linux";
-    outputs = [ "out" "foo" ];
+    outputs = [
+      "out"
+      "foo"
+    ];
   };
 
   combo-path = "${drv0.drvPath}${drv1.drvPath}";
 
-in builtins.addDrvOutputDependencies combo-path
+in
+builtins.addDrvOutputDependencies combo-path

tests/functional/lang/eval-fail-addDrvOutputDependencies-wrong-element-kind.nix

@@ -3,7 +3,11 @@ let
     name = "fail";
     builder = "/bin/false";
     system = "x86_64-linux";
-    outputs = [ "out" "foo" ];
+    outputs = [
+      "out"
+      "foo"
+    ];
   };
 
-in builtins.addDrvOutputDependencies drv.outPath
+in
+builtins.addDrvOutputDependencies drv.outPath

tests/functional/lang/eval-fail-addErrorContext-example.nix

@@ -1,9 +1,9 @@
 let
-  countDown = n:
-    if n == 0
-    then throw "kaboom"
+  countDown =
+    n:
+    if n == 0 then
+      throw "kaboom"
     else
-      builtins.addErrorContext
-        "while counting down; n = ${toString n}"
-        ("x" + countDown (n - 1));
-in countDown 10
+      builtins.addErrorContext "while counting down; n = ${toString n}" ("x" + countDown (n - 1));
+in
+countDown 10

tests/functional/lang/eval-fail-assert-equal-attrs-names-2.nix

@@ -1,2 +1,8 @@
-assert { a = true; } == { a = true; b = true; };
+assert
+  {
+    a = true;
+  } == {
+    a = true;
+    b = true;
+  };
 throw "unreachable"

tests/functional/lang/eval-fail-assert-equal-attrs-names.nix

@@ -1,2 +1,8 @@
-assert { a = true; b = true; } == { a = true; };
+assert
+  {
+    a = true;
+    b = true;
+  } == {
+    a = true;
+  };
 throw "unreachable"

tests/functional/lang/eval-fail-assert-equal-derivations-extra.nix

@@ -1,5 +1,14 @@
 assert
-  { foo = { type = "derivation"; outPath = "/nix/store/0"; }; }
-  ==
-  { foo = { type = "derivation"; outPath = "/nix/store/1"; devious = true; }; };
-throw "unreachable"
+  {
+    foo = {
+      type = "derivation";
+      outPath = "/nix/store/0";
+    };
+  } == {
+    foo = {
+      type = "derivation";
+      outPath = "/nix/store/1";
+      devious = true;
+    };
+  };
+throw "unreachable"

tests/functional/lang/eval-fail-assert-equal-derivations.nix

@@ -1,5 +1,15 @@
 assert
-  { foo = { type = "derivation"; outPath = "/nix/store/0"; ignored = abort "not ignored"; }; }
-  ==
-  { foo = { type = "derivation"; outPath = "/nix/store/1"; ignored = abort "not ignored"; }; };
-throw "unreachable"
+  {
+    foo = {
+      type = "derivation";
+      outPath = "/nix/store/0";
+      ignored = abort "not ignored";
+    };
+  } == {
+    foo = {
+      type = "derivation";
+      outPath = "/nix/store/1";
+      ignored = abort "not ignored";
+    };
+  };
+throw "unreachable"

tests/functional/lang/eval-fail-assert-equal-function-direct.nix

@@ -1,7 +1,4 @@
 # Note: functions in nested structures, e.g. attributes, may be optimized away by pointer identity optimization.
 # This only compares a direct comparison and makes no claims about functions in nested structures.
-assert
-  (x: x)
-  ==
-  (x: x);
-abort "unreachable"
+assert (x: x) == (x: x);
+abort "unreachable"

tests/functional/lang/eval-fail-assert-equal-list-length.nix

@@ -1,2 +1,6 @@
-assert [ 1 0 ] == [ 10 ];
-throw "unreachable"
+assert
+  [
+    1
+    0
+  ] == [ 10 ];
+throw "unreachable"

tests/functional/lang/eval-fail-assert-equal-paths.nix

@@ -1,2 +1,2 @@
 assert ./foo == ./bar;
-throw "unreachable"
+throw "unreachable"

tests/functional/lang/eval-fail-assert-nested-bool.nix

@@ -1,6 +1,3 @@
-assert
-  { a.b = [ { c.d = true; } ]; }
-  ==
-  { a.b = [ { c.d = false; } ]; };
+assert { a.b = [ { c.d = true; } ]; } == { a.b = [ { c.d = false; } ]; };
 
-abort "unreachable"
+abort "unreachable"

tests/functional/lang/eval-fail-assert.nix

@@ -1,5 +1,8 @@
 let {
-  x = arg: assert arg == "y"; 123;
+  x =
+    arg:
+    assert arg == "y";
+    123;
 
   body = x "x";
-}
+}

tests/functional/lang/eval-fail-attr-name-type.nix

@@ -1,7 +1,7 @@
 let
   attrs = {
-    puppy.doggy = {};
+    puppy.doggy = { };
   };
   key = 1;
 in
-  attrs.puppy.${key}
+attrs.puppy.${key}

tests/functional/lang/eval-fail-attrset-merge-drops-later-rec.nix

@@ -1 +1,8 @@
-{ a.b = 1; a = rec { c = d + 2; d = 3; }; }.c
+{
+  a.b = 1;
+  a = rec {
+    c = d + 2;
+    d = 3;
+  };
+}
+.c

tests/functional/lang/eval-fail-bad-string-interpolation-4.nix

@@ -1,6 +1,16 @@
 let
   # Basically a "billion laughs" attack, but toned down to simulated `pkgs`.
-  ha = x: y: { a = x y; b = x y; c = x y; d = x y; e = x y; f = x y; g = x y; h = x y; j = x y; };
+  ha = x: y: {
+    a = x y;
+    b = x y;
+    c = x y;
+    d = x y;
+    e = x y;
+    f = x y;
+    g = x y;
+    h = x y;
+    j = x y;
+  };
   has = ha (ha (ha (ha (x: x)))) "ha";
   # A large structure that has already been evaluated.
   pkgs = builtins.deepSeq has has;

tests/functional/lang/eval-fail-dup-dynamic-attrs.nix

@@ -1,4 +1,8 @@
 {
-  set = { "${"" + "b"}" = 1; };
-  set = { "${"b" + ""}" = 2; };
+  set = {
+    "${"" + "b"}" = 1;
+  };
+  set = {
+    "${"b" + ""}" = 2;
+  };
 }

tests/functional/lang/eval-fail-duplicate-traces.nix

@@ -1,9 +1,6 @@
 # Check that we only omit duplicate stack traces when there's a bunch of them.
 # Here, there's only a couple duplicate entries, so we output them all.
 let
-  throwAfter = n:
-    if n > 0
-    then throwAfter (n - 1)
-    else throw "Uh oh!";
+  throwAfter = n: if n > 0 then throwAfter (n - 1) else throw "Uh oh!";
 in
-  throwAfter 2
+throwAfter 2

tests/functional/lang/eval-fail-eol-3.nix

@@ -1,3 +1,3 @@
-# foo
+# foo
 invalid
 # bar

tests/functional/lang/eval-fail-fetchurl-baseName-attrs-name.nix

@@ -1 +1,4 @@
-builtins.fetchurl { url = "https://example.com/foo.tar.gz"; name = "~wobble~"; }
+builtins.fetchurl {
+  url = "https://example.com/foo.tar.gz";
+  name = "~wobble~";
+}

tests/functional/lang/eval-fail-foldlStrict-strict-op-application.nix

@@ -1,5 +1,5 @@
 # Tests that the result of applying op is forced even if the value is never used
-builtins.foldl'
-  (_: f: f null)
-  null
-  [ (_: throw "Not the final value, but is still forced!") (_: 23) ]
+builtins.foldl' (_: f: f null) null [
+  (_: throw "Not the final value, but is still forced!")
+  (_: 23)
+]

tests/functional/lang/eval-fail-hashfile-missing.nix

@@ -1,5 +1,16 @@
 let
-  paths = [ ./this-file-is-definitely-not-there-7392097 "/and/neither/is/this/37293620" ];
+  paths = [
+    ./this-file-is-definitely-not-there-7392097
+    "/and/neither/is/this/37293620"
+  ];
 in
-  toString (builtins.concatLists (map (hash: map (builtins.hashFile hash) paths) ["md5" "sha1" "sha256" "sha512"]))
-
+toString (
+  builtins.concatLists (
+    map (hash: map (builtins.hashFile hash) paths) [
+      "md5"
+      "sha1"
+      "sha256"
+      "sha512"
+    ]
+  )
+)

tests/functional/lang/eval-fail-list.nix

@@ -1 +1 @@
-8++1
+8 ++ 1

tests/functional/lang/eval-fail-missing-arg.nix

@@ -1 +1,12 @@
-({x, y, z}: x + y + z) {x = "foo"; z = "bar";}
+(
+  {
+    x,
+    y,
+    z,
+  }:
+  x + y + z
+)
+  {
+    x = "foo";
+    z = "bar";
+  }

tests/functional/lang/eval-fail-mutual-recursion.nix

@@ -19,18 +19,22 @@
 # - a few frames of A (skip the rest)
 # - a few frames of B (skip the rest, _and_ skip the remaining frames of A)
 let
-  throwAfterB = recurse: n:
-    if n > 0
-    then throwAfterB recurse (n - 1)
-    else if recurse
-    then throwAfterA false 10
-    else throw "Uh oh!";
+  throwAfterB =
+    recurse: n:
+    if n > 0 then
+      throwAfterB recurse (n - 1)
+    else if recurse then
+      throwAfterA false 10
+    else
+      throw "Uh oh!";
 
-  throwAfterA = recurse: n:
-    if n > 0
-    then throwAfterA recurse (n - 1)
-    else if recurse
-    then throwAfterB true 10
-    else throw "Uh oh!";
+  throwAfterA =
+    recurse: n:
+    if n > 0 then
+      throwAfterA recurse (n - 1)
+    else if recurse then
+      throwAfterB true 10
+    else
+      throw "Uh oh!";
 in
-  throwAfterA true 10
+throwAfterA true 10

tests/functional/lang/eval-fail-nested-list-items.nix

@@ -8,4 +8,27 @@
 #
 #        error: cannot coerce a list to a string: [ [ 1 2 3 4 5 6 7 8 ] [ 1 «4294967290 items elided» ] ]
 
-"" + (let v = [ [ 1 2 3 4 5 6 7 8 ] [1 2 3 4]]; in builtins.deepSeq v v)
+""
++ (
+  let
+    v = [
+      [
+        1
+        2
+        3
+        4
+        5
+        6
+        7
+        8
+      ]
+      [
+        1
+        2
+        3
+        4
+      ]
+    ];
+  in
+  builtins.deepSeq v v
+)

tests/functional/lang/eval-fail-not-throws.nix

@@ -1 +1 @@
-! (throw "uh oh!")
+!(throw "uh oh!")

tests/functional/lang/eval-fail-recursion.nix

@@ -1 +1,4 @@
-let a = {} // a; in a.foo
+let
+  a = { } // a;
+in
+a.foo

tests/functional/lang/eval-fail-remove.nix

@@ -1,5 +1,8 @@
 let {
-  attrs = {x = 123; y = 456;};
+  attrs = {
+    x = 123;
+    y = 456;
+  };
 
-  body = (removeAttrs attrs ["x"]).x;
-}
+  body = (removeAttrs attrs [ "x" ]).x;
+}

tests/functional/lang/eval-fail-scope-5.nix

@@ -3,8 +3,13 @@ let {
   x = "a";
   y = "b";
 
-  f = {x ? y, y ? x}: x + y;
+  f =
+    {
+      x ? y,
+      y ? x,
+    }:
+    x + y;
 
-  body = f {};
+  body = f { };
 
 }

tests/functional/lang/eval-fail-set.nix

@@ -1 +1 @@
-8.x
+8. x

tests/functional/lang/eval-fail-undeclared-arg.nix

@@ -1 +1,5 @@
-({x, z}: x + z) {x = "foo"; y = "bla"; z = "bar";}
+({ x, z }: x + z) {
+  x = "foo";
+  y = "bla";
+  z = "bar";
+}

tests/functional/lang/eval-fail-using-set-as-attr-name.nix

@@ -1,5 +1,7 @@
 let
-  attr = {foo = "bar";};
-  key = {};
+  attr = {
+    foo = "bar";
+  };
+  key = { };
 in
-  attr.${key}
+attr.${key}