[olejorgenb]

In some way, absolutely.

You can easily get a nice isolated python environment with some packages in nix without using pip, pyenv, etc. `nix-shell -p python pythonPackages.numpy ...`

So far I think it works quite well for most languages as long the needed packages are in nixpkgs.

Some of the tooling could be better, but the underlying model seems sound.

I'm not really convinced language-specific package managers are needed. Nix isn't perfect yet, but it has come a long way.