feat(run.nix): expose more

[sivizius]

With this PR, the derivation returned by git-hooks.lib.${system}.run { … } contains the attribute config, which can be used to get the configured pre-commit-hooks. I.e. t is now possible to use the result both in the flake-outputs as e.g. checks = { inherit pre-commit-hooks; }; as well as apps = fooBar pre-commit-hooks.config.hooks, where fooBar extracts all entries of enabled hooks so e.g. nix run clippy would be possible using the same CLI-options as the checks.pre-commit-hooks.

If there already was a way to access these processed hooks, please document it, because I could not find a way myself.

[trueNAHO]

If there already was a way to access these processed hooks, please document it, because I could not find a way myself.

Does a self access resolve this:

checks.git-hooks = inputs.git-hooks.lib.${system}.run {};
apps.default = self.checks.${system}.git-hooks;

However, I agree that being able to access the internal hooks values would be a great feature addition.

For example, my LaTeX flake requires me to wrap hooks.latexindent.package in hooks.latexindent.entry because I need to be able to evaluate the "$(mktemp --directory)" subshell, which is impossible with just entry = "<COMMAND> $(<SUB_COMMAND>)'":

checks.git-hooks = inputs.git-hooks.lib.${system}.run {
  hooks.latexindent = {
    enable = true;

    entry = lib.getExe (
      pkgs.writeShellApplication {
        name = "git-hooks-latexindent-entry";

        text = ''
          ${
            lib.getExe'
            (
              # Re-implement and re-evaluate hooks.latexindent.package.
              pkgs.texlive.combine {
                inherit (pkgs.texlive) latexindent scheme-minimal;
              }
            )
            "latexindent"
          } ${
            lib.cli.toGNUCommandLineShell {} {
              logfile = toString /dev/null;
              overwriteIfDifferent = true;
              silent = true;
            }
          } --cruft "$(mktemp --directory)" "$@"
        '';
      }
    );
  };

  src = ./.;
};

Accessing the package through something like hooks.latexindent.package would be more convenient and would even benefit from the performance optimization from #513.

[sivizius]

Does a self access resolve this:

checks.git-hooks = inputs.git-hooks.lib.${system}.run {};
apps.default = self.checks.${system}.git-hooks;

Not really. This would just avoid running all checks and would allow formatters to apply changes, but I like to run certain hooks, e.g. nix run .#clippy, which is not possible with this.