Old python compat

Author: virtuald

src/semiwrap/hooks.py

@@ -73,13 +73,13 @@ def initialize(self, version: str, build_data: T.Dict[str, T.Any]) -> None:
                 "",
             ]
 
-            msg += traceback.format_exception_only(e, show_group=True)
+            msg += traceback.format_exception_only(e)
             cause = e.__context__
             while cause is not None:
                 if "prepare_metadata_for_build_editable" in str(cause):
                     break
 
-                el = traceback.format_exception_only(cause, show_group=True)
+                el = traceback.format_exception_only(cause)
                 el[0] = f"- caused by {el[0]}"
                 msg += el