(udev-service-type config =>
                            (udev-configuration
                              (inherit config)
                              (rules
                                (cons*
                                  ddcutil
                                  %backlight-udev-rule
                                  %qmk-udev-rule
                                  %steam-controller-udev-rule
                                  %bluetooth-controller-rule
                                  (udev-configuration-rules config)))))