Heeby deeby what about the various ways to build fhs environments in nix. My largest complaint is actually that the nix ecosystem has disjointed, incomplete, and incorrect documentation. You can get through it, but it's often best to try reading the code in nixpkgs when things aren't working like the docs say. I've been getting by for a few years now and I don't really even know the nix language, I really should put the time in to learn it but I will when I need to.
I'm very happy with how much nixos just works and doesn't let me break the whole os just because I want to try the latest version of blender ๐