`MiddlewareMixin.__call__` -- Return type incompatible with supertype

[christianbundy]

Bug report

class MyMiddleware(MiddlewareMixin):
    def __call__(
        self, request: HttpRequest
    ) -> HttpResponseBase | Awaitable[HttpResponseBase]:
        return self.get_response(request)

What's wrong

Return type"HttpResponseBase | Awaitable[HttpResponseBase]" of "call" incompatible with
return type "HttpResponseBase" in supertype "MiddlewareMixin" [override]

Unfortunately get_response() returns HttpResponseBase | Awaitable[HttpResponseBase], but MiddlewareMixin.__call__ has a return type of HttpResponseBase defined. I've tried using @sync_only_middleware, but it looks like that's a no-op.

How is that should be

No error.

System information

• OS: N/A
• python version: 3.11
• django version: 4.1
• mypy version: 1.4
• django-stubs version: 4.2.2
• django-stubs-ext version: 4.2.2