anchor.diff:    };
   
     meta = with stdenv.lib; {
  +    description = "PostScript interpreter";
       homepage = "http://www.ghostscript.com/";
  -    description = "PostScript interpreter (mainline version)";
       license = licenses.gpl3Plus;
       maintainers = with maintainers; [
         wkennington
  
positive.code:   ];
  
    postPatch = ''
      rm -r freetype jbig2dec jpeg lcms2 libpng tiff zlib ijs
  
      sed "s@if ( test -f \$(INCLUDE)[^ ]* )@if ( true )@; s@INCLUDE=/usr/include@INCLUDE=/no-such-path@" -i base/unix-aux.mak
      sed "s@^ZLIBDIR=.*@ZLIBDIR=${zlib}/include@" -i configure.ac
    '';
  
  
negative.code:     '';
    };
  
    baseUrl = "https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/"
      + "download/gs${versionNoP}";
  in
  stdenv.mkDerivation rec {
    name = "ghostscript-${version}";
  