> What is a real world use case where Nix isn't overkill? When you need to tie together code in two or more different languages. For example if you need to cal

> What is a real world use case where Nix isn't overkill? When you need to tie together code in two or more different languages. For example if you need to call an Node executable in your rust program. In that case neither npm nor rustup is enough since you need something to tie the two together. Nix is excellent for that in my experience.