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hynek · hynek · commit 332947993d8c · 2025-07-25T09:48:35.000+02:00
#1446 (comment)
diff --git a/src/attr/_make.py b/src/attr/_make.py
@@ -865,7 +865,11 @@ def _create_slots_class(self):
                 del self._cls.__weakref__
 
             # Manually bump internal version tag.
-            self._cls.__name__ = self._cls.__name__
+            if hasattr(self._cls, "__abstractmethods__"):
+                self._cls.__abstractmethods__ = self._cls.__abstractmethods__
+            else:
+                self._cls.__abstractmethods__ = frozenset({"__init__"})
+                del self._cls.__abstractmethods__
 
         # If our class doesn't have its own implementation of __setattr__
         # (either from the user or by us), check the bases, if one of them has
