feat: adds simplified generator for pre-commit configs

flake.nix

@@ -15,22 +15,13 @@
         plugins = self.plugins.${system};
 
         preCommitConfig = {
-          repos = [
-            {
-              repo = "local";
-              hooks = [
-                {
-                  id = "nixpkgs-fmt";
-                  name = "nixpkgs-fmt";
-                  entry = "${pkgs.nixpkgs-fmt}/bin/nixpkgs-fmt";
-                  language = "system";
-                  files = "\\.nix";
-                }
-              ];
-            }
-          ];
+          nixpkgs-fmt = {
+            entry = "${pkgs.nixpkgs-fmt}/bin/nixpkgs-fmt";
+            language = "system";
+            files = "\\.nix";
+          };
         };
-        preCommit = plugins.pre-commit.mkConfig { config = preCommitConfig; };
+        preCommit = plugins.pre-commit.mkLocalConfig { config = preCommitConfig; };
 
         justConfig = {
           tasks = {

plugins/pre-commit/common.nix

@@ -0,0 +1,19 @@
+{ pre-commit, stagesStr }:
+{
+  shellHookExtra = ''
+    # Uninstall all existing hooks
+    hooks="pre-commit pre-merge-commit pre-push prepare-commit-msg commit-msg post-checkout post-commit"
+    for hook in $hooks; do
+      ${pre-commit}/bin/pre-commit uninstall -t $hook
+    done
+
+    # Install configured hooks
+    for stage in ${stagesStr}; do
+      if [[ "$stage" == "manual" ]]; then
+        continue
+      fi
+
+      ${pre-commit}/bin/pre-commit install -t "$stage"
+    done
+  '';
+}

plugins/pre-commit/default.nix

@@ -1,4 +1,5 @@
 { pkgs, lib }:
 {
   mkConfig = import ./make.nix { inherit pkgs lib; };
+  mkLocalConfig = import ./make_local.nix { inherit pkgs lib; };
 }

plugins/pre-commit/make.nix

@@ -7,22 +7,7 @@ let
   stagesStr = builtins.concatStringsSep " " stages;
 
   # Add an extra hook for reinstalling required stages whenever the file changes
-  shellHookExtra = ''
-    # Uninstall all existing hooks
-    hooks="pre-commit pre-merge-commit pre-push prepare-commit-msg commit-msg post-checkout post-commit"
-    for hook in $hooks; do
-      ${pre-commit}/bin/pre-commit uninstall -t $hook
-    done
-
-    # Install configured hooks
-    for stage in ${stagesStr}; do
-      if [[ "$stage" == "manual" ]]; then
-        continue
-      fi
-
-      ${pre-commit}/bin/pre-commit install -t "$stage"
-    done
-  '';
+  shellHookExtra = (import ./common.nix { inherit pre-commit stagesStr; }).shellHookExtra;
 
   # Generate the module
   result = lib.common.mkTemplate {

plugins/pre-commit/make_local.nix

@@ -0,0 +1,36 @@
+{ pkgs, lib }:
+{ config, pre-commit ? pkgs.pre-commit, jq ? pkgs.jq, yq ? pkgs.yq-go }:
+with pkgs.lib;
+let
+  # Find all stages that require installation
+  stages = unique (flatten (builtins.map (hook: optionals (hook ? stages) hook.stages) (attrValues config)));
+  stagesStr = builtins.concatStringsSep " " stages;
+
+  # Add an extra hook for reinstalling required stages whenever the file changes
+  shellHookExtra = (import ./common.nix { inherit pre-commit stagesStr; }).shellHookExtra;
+
+  # Add structure to config
+  hooks = attrValues (pkgs.lib.mapAttrs
+    (id: hook: (
+      { inherit id; name = if (hook ? name) then hook.name else id; } // hook
+    ))
+    config);
+  data = {
+    repos = [
+      {
+        inherit hooks;
+        repo = "local";
+      }
+    ];
+  };
+
+  # Generate the module
+  result = lib.common.mkTemplate {
+    inherit data shellHookExtra;
+    files = [ ./template.cue ];
+    output = ".pre-commit-config.yaml";
+  };
+in
+{
+  inherit (result) configFile shellHook;
+}