The way it looks now, a self-hosted gogs with a nojs patch may be the way forward. The application-specific part (gogs.js) is <2kloc and it's already rendering stuff on the server. I'm giving it a few weeks before I've had enough...

You could also try out Sourcehut, which seems to fit your use case well.

https://sourcehut.org/

I selfhost gogs and like it. And the releases link is at the top like many ppl wish here :)

Only thing I really miss vs. github is there's no code review built-in.

That's cool, I'm looking forward to that.

Since many different organizations self-host GitLab instances (which is great!), having to enable Javascript for each one can be a bit of a pain.

https://gitlab.com/gitlab-org/gitlab/-/issues/215365