text: # Generated by Django 3.2.10 on 2022-01-11 20:37
  
  import django.db.models.expressions
  from django.db import migrations, models
  
  import trovi.fields
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ("trovi", "0005_remove_default_owner_urn"),
      ]
  
      operations = [
          migrations.AlterField(
              model_name="artifactversion",
              name="contents_urn",
              field=trovi.fields.URNField(max_length=254, null=True),
          ),
          migrations.AddIndex(
              model_name="artifact",
              index=models.Index(
                  django.db.models.expressions.F("created_at"),
                  name="artifact__created_at",
              ),
          ),
      ]
  