I extensively use uv (IMO better than venv) but still it's Python specific and not universal. npm is much worse and native binaries are almost impossible to dea

I extensively use uv (IMO better than venv) but still it's Python specific and not universal. npm is much worse and native binaries are almost impossible to deal with multiple versions. nix is specifically targeting this use-case and it'e extensively used by vendors like Replit.