anchor.diff:  #
   #  regionset = callPackage ../os-specific/linux/regionset { };
   #
  -#  rfkill = callPackage ../os-specific/linux/rfkill { };
  +  rfkill = callPackage ../os-specific/linux/rfkill { };
   #
   #  rfkill_udev = callPackage ../os-specific/linux/rfkill/udev.nix { };
   #
  
positive.code: #
    libidn = callPackage ../development/libraries/libidn { };
  #
  #  idnkit = callPackage ../development/libraries/idnkit { };
  #
  #  libiec61883 = callPackage ../development/libraries/libiec61883 { };
  #
  
negative.code: #    flex = flex_2_5_35;
  #  };
  #
    hdparm = callPackage ../os-specific/linux/hdparm { };
  #
  #  hibernate = callPackage ../os-specific/linux/hibernate { };
  #
  