{ config, lib, pkgs, ... }: let cfg = config.hardware.bladeRF; in { options.hardware.bladeRF = { enable = lib.mkOption { type = lib.types.bool; default = false; description = '' Enables udev rules for BladeRF devices. By default grants access to users in the "bladerf" group. You may want to install the libbladeRF package. ''; }; }; config = lib.mkIf cfg.enable { services.udev.packages = [ pkgs.libbladeRF ]; users.groups.bladerf = {}; }; }