{ ... }:
{
  modules.nix = {
    nixos =
      { ... }:
      {
        nixpkgs.config.allowUnfree = true;
        nix.settings = {
          substituters = [
            "https://hyprland.cachix.org"
            "https://nix-community.cachix.org"
            "https://cache.nixos.org/"
            "https://attic.scug.io/pkgs"
            "https://cache.nixos-cuda.org"
            "https://niri.cachix.org"
          ];
          trusted-public-keys = [
            "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
            "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
            "pkgs:+sRbfiZMMX5R3PuAPtIRz/emowDoGZNpozibrnrAvuc="
            "cache.nixos-cuda.org:74DUi4Ye579gUqzH4ziL9IyiJBlDpMRn9MBN8oNan9M="
            "niri.cachix.org-1:Wv0OmO7PsuocRKzfDoJ3mulSl7Z6oezYhGhR+3W2964="
          ];
          experimental-features = [
            "flakes"
            "nix-command"
          ];
          trusted-users = [
            "doloro"
          ];
        };
      };
  };
}