Making devenv start fast, and the whole nixpkgs with it - devenv

meta: this certainly sounds AI-generated, but why the vibecoding tag? Is any project that is vibecoded's blog now tagged vibecoding?

I have a shell alias to eval "$(direnv hook bash)" and only run it when I know I'm in a nix dir, since it's so slow (even with https://github.com/nix-community/nix-direnv which caches things)