anchor.diff:  
       services.udev.extraRules = nixosRules;
       
  -    services.udev.packages = [extraUdevRules];
  +    services.udev.packages = [ extraUdevRules ];
  +
  +    services.udev.path = [ pkgs.coreutils pkgs.gnused pkgs.gnugrep pkgs.utillinux ];
   
       jobs.udev =
         { startOn = "startup";
  
positive.code:           <filename><replaceable>pkg</replaceable>/etc/udev/rules.d</filename> and
            <filename><replaceable>pkg</replaceable>/lib/udev/rules.d</filename>
            will be included.
          '';
        };
  
  
negative.code:             initctl emit -n new-devices
            '';
        };
  
    };
  
  }
  