anchor.diff:      platforms = platforms.linux;
     };
   }
  -
  
positive.code:     chmod -R u+w External/
    '';
  
  
    nativeBuildInputs = [ perl cmake texlive.combined.scheme-minimal makeWrapper ];
    buildInputs = [ gfortran openblas hdf5-full python armadillo chemps2];
  
    # tests are not running right now.
    doCheck = false;
  
negative.code:   src = fetchFromGitLab {
      owner = "Molcas";
      repo = "OpenMolcas";
      rev = "41cee871945ac712e86ee971425a49a8fc60a936";
      sha256 = "0cap53gy1wds2qaxbijw09fqhvfxphfkr93nhp9xdq84yxh4wzv6";
    };
  
  