feat(jujutsu): show diff in commit message

home.nix

@@ -172,6 +172,17 @@ in {
           patterns = ["glob:'**/*'"];
         };
       };
+      templates.draft_commit_description = ''
+        concat(
+          description,
+          surround(
+            "\nJJ: This commit contains the following changes:\n", "",
+            indent("JJ:     ", diff.stat(72)),
+          ),
+          "\nJJ: ignore-rest\n",
+          diff.git(),
+        )
+      '';
     };
   };