ci: Add commitizen integration (#134)

Uses PR'd fork with support for `post_bump_hooks` [1]

[1]: commitizen-tools/commitizen#644

Author: ysndr

checks/pre-commit-check/default.nix

@@ -1,10 +1,27 @@
-{inputs}:
-inputs.shellHooks.lib.run {
-  src = ../..;
-  hooks = {
-    alejandra.enable = true;
-    rustfmt.enable = true;
-    clippy.enable = true;
-  };
-  settings.clippy.denyWarnings = true;
-}
+{
+  inputs,
+  nixpkgs,
+  lib,
+}: let
+  # temporary, until https://github.com/commitizen-tools/commitizen/pull/644 is merged
+  commitizen = nixpkgs.commitizen.overridePythonAttrs (_: {
+    doCheck = false;
+    src = builtins.fetchGit {
+      url = "https://github.com/skoef/commitizen/";
+      ref = "add-hooks-for-bump-command";
+      rev = "d7c86c8244af0cb5be1ab2b3882d0af74a191352";
+    };
+  });
+in
+  (inputs.shellHooks.lib.run {
+    src = ../..;
+    hooks = {
+      alejandra.enable = true;
+      rustfmt.enable = true;
+      clippy.enable = true;
+      commitizen.enable = true;
+    };
+    settings.clippy.denyWarnings = true;
+    tools = {inherit commitizen;};
+  })
+  // {passthru.commitizen = commitizen;}