Fix the pyLoad user/group option that I added upstream [1]. Fix an evaluation error due to Pipewire changes [2]. [1]: https://github.com/NixOS/nixpkgs/pull/287304 [2]: https://github.com/NixOS/nixpkgs/pull/282377
Let's consolidate all modules under one path, so that NixOS, home-manager, and nix-darwin (if I ever end up using it down the line) would go under the same folder.