id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
23483	Having two dotted app names with the same last part breaks migrations	Szilveszter Farkas	Szilveszter Farkas	"In our Django project we have django.contrib.auth, and our own vendor.auth app listed in INSTALLED_APPS. After upgrading Django to 1.7 final from 1.7b4, I got the following error message after running migrations (or the manage.py test command that runs migrations in this example):

{{{
Traceback (most recent call last):
  File ""./manage.py"", line 10, in <module>
    execute_from_command_line(sys.argv)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/core/management/__init__.py"", line 385, in execute_from_command_line
    utility.execute()
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/core/management/__init__.py"", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/core/management/commands/test.py"", line 50, in run_from_argv
    super(Command, self).run_from_argv(argv)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/core/management/base.py"", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/core/management/commands/test.py"", line 71, in execute
    super(Command, self).execute(*args, **options)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/core/management/base.py"", line 338, in execute
    output = self.handle(*args, **options)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/core/management/commands/test.py"", line 88, in handle
    failures = test_runner.run_tests(test_labels)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/test/runner.py"", line 147, in run_tests
    old_config = self.setup_databases()
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/test/runner.py"", line 109, in setup_databases
    return setup_databases(self.verbosity, self.interactive, **kwargs)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/test/runner.py"", line 299, in setup_databases
    serialize=connection.settings_dict.get(""TEST_SERIALIZE"", True),
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/db/backends/creation.py"", line 374, in create_test_db
    test_flush=True,
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/core/management/__init__.py"", line 115, in call_command
    return klass.execute(*args, **defaults)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/core/management/base.py"", line 338, in execute
    output = self.handle(*args, **options)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/core/management/commands/migrate.py"", line 160, in handle
    executor.migrate(targets, plan, fake=options.get(""fake"", False))
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/db/migrations/executor.py"", line 63, in migrate
    self.apply_migration(migration, fake=fake)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/db/migrations/executor.py"", line 91, in apply_migration
    if self.detect_soft_applied(migration):
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/db/migrations/executor.py"", line 135, in detect_soft_applied
    apps = project_state.render()
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/db/migrations/state.py"", line 57, in render
    self.apps = Apps([AppConfigStub(label) for label in sorted(self.real_apps + list(app_labels))])
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/apps/registry.py"", line 56, in __init__
    self.populate(installed_apps)
  File ""/Users/szilveszter/Prezi/repo/website-connected/virtualenv/lib/python2.7/site-packages/django/apps/registry.py"", line 89, in populate
    ""duplicates: %s"" % app_config.label)
django.core.exceptions.ImproperlyConfigured: Application labels aren't unique, duplicates: auth
}}}"	Bug	closed	Migrations	1.7	Normal	fixed			Ready for checkin	0	0	0	0	0	0