Reverted "Fixed #26401 -- Added BaseAuthConfig to use auth without migrations."

This reverts commit 1ec1633cb294d8ce2a65ece6b56c258483596fba as it
doesn't handle ContentType's auth.Permission dependency. Thus, it
doesn't allow auth without migrations.

django/contrib/auth/apps.py

@@ -7,26 +7,14 @@ from .checks import check_models_permissions, check_user_model
 from .management import create_permissions
 
 
-class BaseAuthConfig(AppConfig):
-    """
-    AppConfig which assumes that the auth models don't exist.
-    """
+class AuthConfig(AppConfig):
     name = 'django.contrib.auth'
     verbose_name = _("Authentication and Authorization")
 
     def ready(self):
-        checks.register(check_user_model, checks.Tags.models)
-
-
-class AuthConfig(BaseAuthConfig):
-    """
-    The default AppConfig for auth.
-    """
-
-    def ready(self):
-        super(AuthConfig, self).ready()
         post_migrate.connect(
             create_permissions,
             dispatch_uid="django.contrib.auth.management.create_permissions"
         )
+        checks.register(check_user_model, checks.Tags.models)
         checks.register(check_models_permissions, checks.Tags.models)

docs/ref/contrib/auth.txt

@@ -666,23 +666,6 @@ The following backends are available in :mod:`django.contrib.auth.backends`:
    users because :attr:`~RemoteUserBackend.user_can_authenticate` always
    returns ``True``.
 
-``AppConfig`` classes
-=====================
-
-.. module:: django.contrib.auth.apps
-   :synopsis: AppConfigs for contrib.auth.
-
-.. class:: AuthConfig
-
-    The default :class:`~django.apps.AppConfig`.
-
-.. class:: BaseAuthConfig
-
-    .. versionadded:: 1.11
-
-    An :class:`~django.apps.AppConfig` for use if you :ref:`aren't using
-    <using-auth-without-models>` any of the built-in ``contrib.auth`` models.
-
 Utility functions
 =================
 

docs/releases/1.11.txt

@@ -113,10 +113,6 @@ Minor features
 * Added password validators ``help_text`` to
   :class:`~django.contrib.auth.forms.UserCreationForm`.
 
-* The new :class:`~django.contrib.auth.apps.BaseAuthConfig` ``AppConfig``
-  allows using the authentication system :ref:`without any of the built-in
-  models <using-auth-without-models>`.
-
 * The ``HttpRequest`` is now passed to :func:`~django.contrib.auth.authenticate`
   which in turn passes it to the authentication backend if it accepts a
   ``request`` argument.

docs/topics/auth/customizing.txt

@@ -1156,28 +1156,3 @@ Finally, specify the custom model as the default user model for your project
 using the :setting:`AUTH_USER_MODEL` setting in your ``settings.py``::
 
     AUTH_USER_MODEL = 'customauth.MyUser'
-
-.. _using-auth-without-models:
-
-Using ``contrib.auth`` without the built-in models
-==================================================
-
-The models shipped with ``contrib.auth`` may not be required. For example, if
-you :ref:`customize the user model <auth-custom-user>` and don't use the
-:class:`~django.contrib.auth.models.Permission` and
-:class:`~django.contrib.auth.models.Group` models, then the ``auth`` tables
-may be unused. To avoid creating these tables, modify the
-:setting:`MIGRATION_MODULES` setting and disable the migrations for the
-``auth`` app::
-
-    MIGRATION_MODULES = {'auth': None}
-
-To prevent creation of the default permissions, change ``'django.contrib.auth'``
-in :setting:`INSTALLED_APPS` to
-:class:`django.contrib.auth.apps.BaseAuthConfig`::
-
-    INSTALLED_APPS = [
-        ...
-        'django.contrib.auth.apps.BaseAuthConfig',
-        ...
-    ]

tests/auth_tests/test_apps.py

@@ -1,62 +0,0 @@
-import os
-import shutil
-import subprocess
-import sys
-import tempfile
-import unittest
-
-from django.db import ConnectionHandler
-
-
-SETTINGS = """
-SECRET_KEY = 'django_auth_tests_secret_key'
-
-INSTALLED_APPS = [
-    'django.contrib.auth.apps.BaseAuthConfig',
-    'django.contrib.contenttypes',
-]
-
-MIGRATION_MODULES = {'auth': None}
-
-DATABASES = %(databases)r
-"""
-
-
-class AppConfigTests(unittest.TestCase):
-    def test_no_migrations(self):
-        project_path = tempfile.mkdtemp()
-        try:
-            databases = {
-                'default': {
-                    'ENGINE': 'django.db.backends.sqlite3',
-                    'NAME': os.path.join(project_path, 'db.sqlite3'),
-                }
-            }
-
-            with open(os.path.join(project_path, 'no_migrations.py'), 'w') as fp:
-                fp.write(SETTINGS % {'databases': databases})
-
-            with open(os.devnull, 'wb') as devnull:
-                cmd = [
-                    sys.executable,
-                    '-m', 'django',
-                    'migrate',
-                    '--settings', 'no_migrations',
-                    '--pythonpath', project_path,
-                ]
-                returncode = subprocess.call(cmd, stdout=devnull, stderr=devnull)
-
-            # Migrate command ran without errors.
-            self.assertEqual(returncode, 0)
-
-            # Auth tables weren't created.
-            conns = ConnectionHandler(databases)
-            try:
-                self.assertEqual(
-                    set(conns['default'].introspection.table_names()),
-                    {'django_content_type', 'django_migrations'},
-                )
-            finally:
-                conns.close_all()
-        finally:
-            shutil.rmtree(project_path)