I suppose what I'm missing then is why you ever need to switch from nix shell to (your just etc. -less) nix develop environment?
Is it that the latter is for actually building/running the debug build locally, like a `docker compose up --build` for example? i.e. it's the environment the thing you're working on runs in, but you working on it run in nix shell (with just, git, docker compose in that example, your editor, etc.)?
