nixos/services/cups.nix

{
  config,
  lib,
  pkgs,
  ...
}:
with lib;
  mkIf (elem "cups" config.machine.services) {
    services.printing = {
      enable = true;
      startWhenNeeded = true;
      drivers = with pkgs; [gutenprint hplip splix samsung-unified-linux-driver];
    };
  }