anchor.diff:      owner = "Molcas";
       repo = "OpenMolcas";
       rev = gitLabRev;
  -    sha256 = "0k05wy5gjpkibafzr9jnxas134m9sbnxrvblz1wb9l4cj2l0hb11";
  +    sha256 = "1di1ygifx7ycfpwh25mv76xlv15wqfdmqzjsg5nani2d5z0arri2";
     };
   
     prePatch = ''
  
positive.code:     rev = "efd3d5bafd403f945e3ea5bee17d43e150ef78b2";
      sha256 = "0qzs8s0pjrda7icws3f1a55rklfw7b94468ym5zsgp86ikjf2rlz";
    };
   
  in stdenv.mkDerivation {
    name = "openmolcas-${version}";
  
  
negative.code: } :
  
  let
    version = "18.09";
    gitLabRev = "v${version}";
  
    python = python3.withPackages (ps : with ps; [ six pyparsing ]);
  