859c76c505
E.g. when overriding `nix` with `pkgs.lix`, `nixos-option` will fail. Given that I haven't used it in a very long time, I wanted to disable it, but finding an option to turn off `nixos-option` is kinda hard given that the options are generated here using `mkToolModule`. I assumed that this isn't possible until I learned that `system.tools.X.enable` exists. To me, this is a clear sign that these shouldn't be internal.