Bug report

What’s wrong

We have defined a custom AuthUser model in our project like:

from django.contrib.auth.models import AbstractBaseUser, PermissionsMixin

class AuthUser(PermissionsMixin, AbstractBaseUser):
    class Meta:
        verbose_name = _('Auth User')
        abstract = False
        db_table = 'auth_user'

mypy gives an error:

myproject/models/auth.py:3: error: Definition of "_meta" in base class "PermissionsMixin" is incompatible with definition in base class "AbstractBaseUser"

(from the class AuthUser(PermissionsMixin, AbstractBaseUser): line)

The slightly weird part is Django’s PermissionMixin and AbstractBaseUser both have an identical Meta:

    class Meta:
        abstract = True

How is that should be

No error

System information

• OS:
• python version: 3.8.3
• django version: 2.2.12
• mypy version: 0.782
• django-stubs version: 1.5.0