{pkgs, ...}: { services.udev.extraRules = '' SUBSYSTEM=="usb", MODE="0666" SUBSYSTEM=="leds", KERNEL=="rgb:kbd_backlight*", ACTION=="add", RUN+="${pkgs.coreutils}/bin/chmod a+w /sys/class/leds/%k/multi_intensity" KERNEL=="uinput", MODE="0660", GROUP="input", OPTIONS+="static_node=uinput" KERNEL=="event*", SUBSYSTEM=="input", MODE="0660", GROUP="input" ''; environment.systemPackages = with pkgs; [ zsa-udev-rules ]; }