Only depend on chronos if migration was already applied

aleksis/core/migrations/0046_add_room_model.py

@@ -17,7 +17,9 @@ class Migration(migrations.Migration):
     ]
 
     if "aleksis.apps.chronos.apps.ChronosConfig" in settings.INSTALLED_APPS:
-        dependencies.append(('chronos', '0012_add_supervision_global_permission'))
+        Migration = migrations.recorder.MigrationRecorder.Migration
+        if not Migration.objects.filter(app="core", name="0046_add_room_model").exists():
+            dependencies.append(('chronos', '0012_add_supervision_global_permission'))
 
     operations = [
         migrations.CreateModel(