Par of the problem is that tools don’t really have a notion of “behavior of system 2 releases ago”. If you had a Django plugin that, like, let you say “oh the

Par of the problem is that tools don’t really have a notion of “behavior of system 2 releases ago”. If you had a Django plugin that, like, let you say “oh the previous version of the app that was deployed had this model shape, so during this migration I need to do X/Y/Z” using the git info, you could do more. But that would be a leaky abstraction and would run into a sort of coordination problem mid-deploy (what states are other machines in?). There might be some restrictions you could place to make this work though