Error with django-allauth if User model doesn't explicitly list objects = UserManager() as Manager

[Raxev]

Python Version

3.9

Django Version

4.0.7

Package Version

1.3.0

Description

Hello, first of all, thank you for maintaining this package.

I found an error related to django-allauth after running the migrations generated after installing django-auto-prefetch.

The following is the error I got, which was preventing users from logging in.

After some digging I noticed that django-auto-prefetch changed the manager for the User Model from UserManager() to Manager(), which does not have the attribute get_by_natural_key

migrations.AlterModelManagers(
            name='user',
            managers=[
                ('objects', django.db.models.manager.Manager()),
                ('prefetch_manager', django.db.models.manager.Manager()),
            ],
        ),

To resolve this issue I had to explicitly add UserManager() as the manager for my User model as follows:

class User(auto_prefetch.Model, AbstractUser):
    """Represents a User's account."""
    objects = UserManager()
    ...

This change allowed the next migration files to be generated the way they were supposed to:

migrations.AlterModelManagers(
            name='user',
            managers=[
                ('objects', django.contrib.auth.models.UserManager()),
                ('prefetch_manager', django.db.models.manager.Manager()),
            ],
        ),

I think it would be helpful to add some sort of note letting others know how this might affect their User models.

Thank you!