Adjust testproj migrations to oauth-toolkit v1.3+

Author: glowka

testproj/users/migrations/0002_setup_oauth2_apps.py

@@ -1,4 +1,5 @@
 # Generated by Django 2.1.3 on 2018-12-19 07:57
+import pkg_resources
 from django.conf import settings
 from django.db import migrations
 
@@ -27,10 +28,16 @@ def add_oauth_apps(apps, schema_editor):
         Application.objects.get_or_create(client_id=app['client_id'], defaults=app)
 
 
+def get_oauth_dependency():
+    oauth_version = pkg_resources.get_distribution('django-oauth-toolkit').version.split('.')[:2]
+    # 1.1 and 1.2 are before squasing migrations into 0001_initial
+    return '0006_auto_20171214_2232' if oauth_version in (('1', '1'), ('1', '2')) else '0001_initial'
+
+
 class Migration(migrations.Migration):
     dependencies = [
         migrations.swappable_dependency(settings.AUTH_USER_MODEL),
-        ('oauth2_provider', '0006_auto_20171214_2232'),
+        ('oauth2_provider', get_oauth_dependency()),
         ('users', '0001_create_admin_user'),
     ]