anchor.diff:      '';
   
   
  -  meta = {
  +  meta = with stdenv.lib; {
       description = "Generate man pages from `--help' output";
   
       longDescription =
  
positive.code: 
      homepage = http://www.gnu.org/software/help2man/;
  
      license = stdenv.lib.licenses.gpl3Plus;
      platforms = stdenv.lib.platforms.gnu;         # arbitrary choice
      maintainers = [ stdenv.lib.maintainers.ludo ];
    };
  }
  
negative.code: { stdenv, fetchurl, perl, gettext, LocaleGettext, makeWrapper }:
  
  stdenv.mkDerivation rec {
    name = "help2man-1.46.1";
  
    src = fetchurl {
      url = "mirror://gnu/help2man/${name}.tar.xz";
      sha256 = "0iqwb3qirl7rp1wwpbh01q89qxvi4h3bc73wi03av6hl4sh05z9x";
    };
  
    buildInputs = [ makeWrapper perl gettext LocaleGettext ];
  