anchor.diff:    '';
   
     meta = {
  -    description = "PAKCS is an implementation of the multi-paradigm declarative language Curry.";
  +    description = "an implementation of the multi-paradigm declarative language Curry";
       longDescription = ''
         PAKCS is an implementation of the multi-paradigm declarative language
         Curry jointly developed by the Portland State University, the Aachen
  
positive.code: { stdenv, fetchurl, ghc, swiProlog, syb, mtl, makeWrapper, rlwrap, tk }:
  
  stdenv.mkDerivation rec {
    pname = "pakcs";
    version = "1.9.2";
    name = "${pname}-${version}";
  
    src = fetchurl {
      url = "http://www.informatik.uni-kiel.de/~pakcs/download/pakcs_src.tar.gz";
  
negative.code:     (cd $out/curry2prolog/ ; make)
  
      ensureDir $out/share/emacs/site-lisp/curry-pakcs
      for e in "$out/tools/emacs/"*.el ; do
        ln -s $out/tools/emacs/$e $out/share/emacs/site-lisp/curry-pakcs/;
      done
  
  