anchor.diff:    };
   
     firmwareDirs = config.services.udev.addFirmware;
  +  
     extraUdevPkgs = config.services.udev.addUdevPkgs
       ++ pkgs.lib.optional (cfg.extraRules != "")
         (pkgs.writeTextFile {
  
positive.code: 
  {
  
    require = [
      options
    ];
  
    services = {
      extraJobs = [{
        name = "udev";
        
        job = ''
          start on startup
          stop on shutdown
  
          env UDEV_CONFIG_FILE=${conf}
  
          start script
              echo "" > /proc/sys/kernel/hotplug
  
              # Get rid of possible old udev processes.
  
negative.code:             done
  
              initctl emit new-devices
            '';
  
          exec = "${udev}/sbin/udevd";
  
        };
  
    };
  
  }
  