django.contrib.auth should return the configured User type

[asottile-sentry]

Bug report

django-stubs/django-stubs/contrib/auth/__init__.pyi

Line 21 in 9b50861

def authenticate(request: HttpRequest | None = ..., **credentials: Any) -> AbstractBaseUser | None: ...

probably would require a mypy plugin to adjust the type similar to the one for django.contrib.auth.get_user_model

I suspect #1353 is related at least and may be solved by fixing this as well

(sorry for cutting off the rest of the bug report template -- I haven't been able to pin down a minimal example!)

[flaeppe]

After reading through #1353 it seems that will also be closed by adjusting authenticate with the plugin.

I think one form of minimal example is

# myapp/models.py
from django.db import models

class User(models.Model): ...

# settings.py
INSTALLED_APPS = ["django.contrib.contenttypes", "django.contrib.auth", "myapp"]
AUTH_USER_MODEL = "myapp.User"

# main
from django.contrib.auth import authenticate
reveal_type(authenticate())  # N: Revealed type is "Union[myapp.models.User, None]"