nixpkgs/nixos/modules/hardware/rtl-sdr.nix

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{ config, lib, pkgs, ... }:
let
cfg = config.hardware.rtl-sdr;
in {
options.hardware.rtl-sdr = {
enable = lib.mkOption {
type = lib.types.bool;
default = false;
description = ''
Enables rtl-sdr udev rules, ensures 'plugdev' group exists, and blacklists DVB kernel modules.
This is a prerequisite to using devices supported by rtl-sdr without being root, since rtl-sdr USB descriptors will be owned by plugdev through udev.
'';
};
};
config = lib.mkIf cfg.enable {
boot.blacklistedKernelModules = [ "dvb_usb_rtl28xxu" "e4000" "rtl2832" ];
services.udev.packages = [ pkgs.rtl-sdr ];
users.groups.plugdev = {};
};
}