Done in https://github.com/chrismedrela/django/commit/a2fe808ca4d1657ef62eed2028cb4e9928dd252a. Please, have a look at https://github.com/chrismedrela/django/commit/ddb43bdb9d20ec32a450439aa12f05cda8c45995 where I added skipping autocreated through models too.