anchor.diff:    dontStrip = true;
   
     meta = with stdenv.lib; {
  -    description = "Quantum program package";
  +    description = "Quantum chemistry program package";
       homepage = https://www.molpro.net;
       licenses = licences.unfree;
  +    maintainers = [ maintainers.markuskowa ];
       platforms = [ "x86_64-linux" ];
     };
   }
  
positive.code:   src = localFile {
      website = http://www.molpro.net;
      srcfile = "molpro-mpp-${version}.linux_x86_64_openmp.sh.gz";
      sha256 = "1y9fjky7vl8lrgxvr2lxycihyi2kxwyilzf2jdvfla68jk1wlwf3";
    };
  
    buildInputs = [ python ];
  
negative.code: , token
  } :
  let
    version = "2015.1.38";
  
  in stdenv.mkDerivation {
    name = "molpro-${version}";
  