Wrong QuerySet method typing from Iterable[T] argument

[trecouvr]

Bug report

What's wrong

When I share between multiple models a custom QuerySet with methods using Iterable[T] as arguments, the revealed typing is always the one of the first evaluated model.

I tried some alternatives like defining a specific queryset for each models, defining a specific manager for each models, using Manager.from_queryset, using QuerySet.as_manager, I always ends up with the same result. If someone could point me a workaround that would be great.

My specific use case involve overriding the bulk_create and bulk_update methods of the QuerySet to add some logging to it.

class BaseQuerySet(models.QuerySet[T], Generic[T]):
    def example_process_list(self, m: Collection[T]) -> None: ...
    def example_process_one(self, m: T) -> None: ...

class MyModel(models.Model):
    objects = BaseQuerySet.as_manager()

class MyModel2(models.Model):
    objects = BaseQuerySet.as_manager()

reveal_type(MyModel.objects.example_process_one) # Revealed type is "def (m: dj_stubs_demo.models.MyModel)"
reveal_type(MyModel2.objects.example_process_one) # Revealed type is "def (m: dj_stubs_demo.models.MyModel2)"
reveal_type(MyModel.objects.example_process_list) # Revealed type is "def (m: typing.Iterable[dj_stubs_demo.models.MyModel])"
reveal_type(MyModel2.objects.example_process_list) # Revealed type is "def (m: typing.Iterable[dj_stubs_demo.models.MyModel])"

How is that should be

reveal_type(MyModel.objects.example_process_one) # Revealed type is "def (m: dj_stubs_demo.models.MyModel)"
reveal_type(MyModel2.objects.example_process_one) # Revealed type is "def (m: dj_stubs_demo.models.MyModel2)"
reveal_type(MyModel.objects.example_process_list) # Revealed type is "def (m: typing.Iterable[dj_stubs_demo.models.MyModel])"
reveal_type(MyModel2.objects.example_process_list) # this one ---> Revealed type is "def (m: typing.Iterable[dj_stubs_demo.models.MyModel2])"

System information

• OS: osx
• python version: 3.11.3
• django version: Django==4.2.9
• mypy version: mypy==1.7.1
• django-stubs version: django-stubs==4.2.7
• django-stubs-ext version: django-stubs-ext==4.2.7