♻️ env Add pre-commit hook

flake.nix

@@ -123,12 +123,14 @@
         collectHostsOnSystem
         ;
 
+      # editorconfig-checker-disable
       # DEPRECATED - will be removed soon
       inherit
         (deprecated)
         # Place any deprecated lib functions here
         
         ;
+      # editorconfig-checker-enable
     };
 
     # a little extra service ...
@@ -148,6 +150,6 @@
     # system-space and pass sytem and input to each file
     jobs = polyfillOutput ./jobs;
     checks = polyfillOutput ./checks;
-    devShell = polyfillOutput ./devShell.nix;
+    devShell = polyfillOutput ./shell;
   };
 }

shell/default.nix

@@ -63,9 +63,11 @@
     };
 in
   devshell.mkShell {
+    imports = [(devshell.extraModulesDir + "/git/hooks.nix")];
     name = "digga";
     packages = with pkgs; [
       fd
+      editorconfig-checker
       treefmt
       alejandra
       nodePackages.prettier
@@ -108,4 +110,9 @@ in
       (docs {package = pkgs.mdbook;})
       (docs makeDocs)
     ];
+
+    git.hooks = {
+      enable = true;
+      pre-commit.text = builtins.readFile ./pre-commit.sh;
+    };
   }

shell/pre-commit.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+if git rev-parse --verify HEAD >/dev/null 2>&1; then
+  against=HEAD
+else
+  # Initial commit: diff against an empty tree object
+  against=$(${git}/bin/git hash-object -t tree /dev/null)
+fi
+
+diff="git diff-index --name-only --cached $against --diff-filter d"
+
+all_files=($($diff))
+
+# Format staged files.
+if ((${#all_files[@]} != 0)); then
+  fmt "${all_files[@]}" &&
+    git add "${all_files[@]}"
+fi
+
+# check editorconfig
+if ((${#all_files[@]} != 0)); then
+  if ! editorconfig-checker -- "${all_files[@]}"; then
+    printf "%b\n" \
+      "\nCode is not aligned with .editorconfig" \
+      "Review the output and commit your fixes" >&2
+    exit 1
+  fi
+fi