{ hostType, lib, pkgs, ... }: { config = lib.mkMerge [ # Common configuration { services = { fwupd.enable = true; fstrim.enable = true; }; } # Server specific configuration (lib.mkIf hostType.isServer { }) # Workstation specific configuration (lib.mkIf hostType.isWorkstation { services = { printing.enable = true; udev.packages = with pkgs; [ yubikey-personalization ]; }; }) ]; }