add gptcommit

README.md

@@ -215,6 +215,7 @@ clang-format = {
 ## Git
 
 - [commitizen](https://github.com/commitizen-tools/commitizen)
+- [gptcommit](https://github.com/zurawiki/gptcommit)
 
 ## Custom hooks
 

flake.nix

@@ -15,6 +15,7 @@
 
   outputs = { self, nixpkgs, flake-utils, gitignore, nixpkgs-stable, ... }:
     let
+      lib = nixpkgs.lib;
       defaultSystems = [
         "aarch64-linux"
         "aarch64-darwin"
@@ -46,7 +47,8 @@
           inherit (exposed.checks.pre-commit-check) shellHook;
         };
 
-        checks = exposed.checks // exposed-stable.checks;
+        checks = lib.filterAttrs (k: v: v != null)
+          (exposed.checks // exposed-stable.checks);
 
         lib = { inherit (exposed) run; };
       }

modules/hooks.nix

@@ -471,6 +471,19 @@ in
         ## the `dune-project` file has changed.
         pass_filenames = false;
       };
+      gptcommit = lib.optionalAttrs (tools.gptcommit != null) {
+        name = "gptcommit";
+        description = "Generate a commit message using GPT3.";
+        entry =
+          let
+            script = pkgs.writeShellScript "precommit-gptcomit" ''
+              ${tools.gptcommit}/bin/gptcommit prepare-commit-msg --commit-source \
+                "$PRE_COMMIT_COMMIT_MSG_SOURCE" --commit-msg-file "$1"
+            '';
+          in
+          toString script;
+        stages = [ "prepare-commit-msg" ];
+      };
       hlint =
         {
           name = "hlint";

modules/pre-commit.nix

@@ -225,7 +225,7 @@ in
 
       tools =
         mkOption {
-          type = types.lazyAttrsOf types.package;
+          type = types.lazyAttrsOf (types.nullOr types.package);
           description = lib.mdDoc
             ''
               Tool set from which `nix-pre-commit-hooks` will pick binaries.

nix/tools.nix

@@ -15,6 +15,7 @@
 , elmPackages
 , git
 , gitAndTools
+, gptcommit ? null
 , hadolint
 , haskell
 , haskellPackages
@@ -61,7 +62,7 @@ let
   };
 in
 {
-  inherit actionlint ansible-lint alejandra cabal-fmt cabal2nix cargo clang-tools clippy deadnix dhall editorconfig-checker hadolint hindent hlint hpack html-tidy nil nixfmt nixpkgs-fmt opam ormolu rustfmt shellcheck shfmt statix stylish-haskell stylua tagref typos go mdsh revive go-tools yamllint ruff;
+  inherit actionlint ansible-lint alejandra cabal-fmt cabal2nix cargo clang-tools gptcommit clippy deadnix dhall editorconfig-checker hadolint hindent hlint hpack html-tidy nil nixfmt nixpkgs-fmt opam ormolu rustfmt shellcheck shfmt statix stylish-haskell stylua tagref typos go mdsh revive go-tools yamllint ruff;
   inherit (elmPackages) elm-format elm-review elm-test;
   # TODO: these two should be statically compiled
   inherit (haskellPackages) fourmolu;