diff --git a/generator/render.py b/generator/render.py
index f4a9e48..41771cb 100644
--- a/generator/render.py
+++ b/generator/render.py
@@ -156,13 +156,17 @@ def render_split(manifest: dict) -> dict:
             f"      # {line}\n" if line else "      #\n"
             for line in leg["entrypoint_comment"].rstrip("\n").splitlines()
         )
-        tag_event_line = "  - event: tag\n" if manifest.get("when_tag_event", True) else ""
+        tag_event_line = (
+            "  - event: tag\n" if manifest.get("when_tag_event", True) else ""
+        )
         publish_flag = " -- --publish" if leg.get("publish_flag", True) else ""
         default_setup_comment = (
             f"nix.conf substituters + {git_host} netrc (to fetch the parity-lib\n"
             "flake input). Same bootstrap as flake-hub/ci/setup.sh."
         )
-        setup_comment = _comment_block(leg.get("setup_comment", default_setup_comment), "      ")
+        setup_comment = _comment_block(
+            leg.get("setup_comment", default_setup_comment), "      "
+        )
         out[f"{arch}.yaml"] = tmpl.format(
             repo=repo,
             nix_system=leg["nix_system"],