Merge pull request #161124 from Atemu/nixos/nix-skip-all-checks

nixos/nix-daemon: make checkConfig fully disable nix.conf validation

nixos/doc/manual/from_md/release-notes/rl-2211.section.xml

···
       </listitem>
       <listitem>
         <para>
+          The <literal>nix.checkConfig</literal> option now fully
+          disables the config check. The new
+          <literal>nix.checkAllErrors</literal> option behaves like
+          <literal>nix.checkConfig</literal> previously did.
+        </para>
+      </listitem>
+      <listitem>
+        <para>
           <literal>generateOptparseApplicativeCompletions</literal> and
           <literal>generateOptparseApplicativeCompletion</literal> from
           <literal>haskell.lib.compose</literal> (and

nixos/doc/manual/release-notes/rl-2211.section.md

···
 
 - virtlyst package and `services.virtlyst` module removed, due to lack of maintainers.
 
+- The `nix.checkConfig` option now fully disables the config check. The new `nix.checkAllErrors` option behaves like `nix.checkConfig`  previously did.
+
 - `generateOptparseApplicativeCompletions` and `generateOptparseApplicativeCompletion` from `haskell.lib.compose`
   (and `haskell.lib`) have been deprecated in favor of `generateOptparseApplicativeCompletions` (plural!) as
   provided by the haskell package sets (so `haskellPackages.generateOptparseApplicativeCompletions` etc.).

nixos/modules/services/misc/nix-daemon.nix

···
         ${mkKeyValuePairs cfg.settings}
         ${cfg.extraOptions}
       '';
-      checkPhase =
+      checkPhase = lib.optionalString cfg.checkConfig (
         if pkgs.stdenv.hostPlatform != pkgs.stdenv.buildPlatform then ''
           echo "Ignoring validation for cross-compilation"
         ''
···
             ${cfg.package}/bin/nix show-config ${optionalString (isNixAtLeast "2.3pre") "--no-net"} \
               ${optionalString (isNixAtLeast "2.4pre") "--option experimental-features nix-command"} \
             |& sed -e 's/^warning:/error:/' \
-            | (! grep '${if cfg.checkConfig then "^error:" else "^error: unknown setting"}')
+            | (! grep '${if cfg.checkAllErrors then "^error:" else "^error: unknown setting"}')
           set -o pipefail
-        '';
+        '');
     };
 
   legacyConfMappings = {
···
         type = types.bool;
         default = true;
         description = lib.mdDoc ''
-          If enabled (the default), checks for data type mismatches and that Nix
-          can parse the generated nix.conf.
+          If enabled, checks that Nix can parse the generated nix.conf.
+        '';
+      };
+
+      checkAllErrors = mkOption {
+        type = types.bool;
+        default = true;
+        description = lib.mdDoc ''
+          If enabled, checks the nix.conf parsing for any kind of error. When disabled, checks only for unknown settings.
         '';
       };