fix #131

Author: bckohan

django_typer/management/__init__.py

@@ -1951,9 +1951,13 @@ def __new__(
                         attr_help = base.help
 
             def command_bases() -> t.Generator[t.Type[TyperCommand], None, None]:
-                for base in reversed(bases):
-                    if issubclass(base, TyperCommand) and base is not TyperCommand:
-                        yield base
+                seen = set()
+                for first_level in reversed(bases):
+                    for base in reversed(first_level.__mro__):
+                        if issubclass(base, TyperCommand) and base is not TyperCommand:
+                            if base not in seen:
+                                seen.add(base)
+                                yield base
 
             typer_app = Typer(
                 name=name or attrs.get("__module__", "").rsplit(".", maxsplit=1)[-1],