{ ... }: {
  nix.settings = {
    substituters = [
      "http://nix-cache.stronghold.mlaga97.space"
      "https://nix-community.cachix.org"
      "https://cache.nixos.org/"
    ];
    trusted-public-keys = [
      "nix-cache.stronghold.mlaga97.space:RR2S/XWXGjACgAeN30qWCgG1wySOyTGtup8Os3yrdQw="
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];
  };
}