I want to use Nix flakes for some projects at work. Those projects live in private Gitlab repositories that I use SSH keys to access. Furthermore, the project layout doesn’t mirror the usual GitHub namespace/project convention, but is something more like Company/Prefix/Username/Something/project. Nix’s flake input mechanisms do not like this, and figuring out how to get them to cooperate was a bit of a romp through various abandoned forum posts.

The incredibly hacky solution I finally came up with was: First use git+https://gitlab.com/Company/path/to/project in the inputs.project.url field. Then add a

entry to my Git config file to rewrite the URL on the fly.

This works, seemingly because Git actually uses SSH to access the HTTPS URL? Or it figures out that it should use SSH to access the rewritten URI? I dunno, man.