anchor.diff:        version gxditview of the X11 xditview previewer, and an
         implementation of the -mm macros.
       '';
  -
  -    homepage = http://www.gnu.org/software/groff/;
  -
  -    license = "GPLv3+";
     };
   }
  
positive.code:   };
  
    meta = {
      description = "GNU Troff, a typesetting package that reads plain text and produces formatted output";
  
      longDescription = ''
        groff is the GNU implementation of troff, a document formatting
  
negative.code: { stdenv, fetchurl, ghostscript, perl, groff }:
  
  stdenv.mkDerivation rec {
    name = "groff-1.22.2";
  
    src = fetchurl {
      url = "mirror://gnu/groff/${name}.tar.gz";
      sha256 = "0xi07nhj5vdgax37rj25mwxzdmsz1ifx50hjgc6hqbkpqkd6821q";
    };
  
    buildInputs = [ ghostscript ];
  