anchor.diff:      owner = "Molcas";
       repo = "OpenMolcas";
       rev = gitLabRev;
  -    sha256 = "sha256-GMi2dsNBog+TmpmP6fhQcp6Z5Bh2LelV//MqLnvRP5c=";
  +    sha256 = "0p2xj8kgqdk5kb1jv5k77acbiqkbl2sh971jnz9p00cmbh556r6a";
     };
   
     patches = [ (fetchpatch {
  
positive.code:     python
      armadillo
      chemps2
    ];
  
    # tests are not running right now.
  
negative.code:   "OpenMolcas requires OpenBLAS or MKL.";
  
  let
    version = "22.02-2022-02-10";
    gitLabRev = "f8df69cf87b241a15ebc82d72a8f9a031a385dd4";
  
    python = python3.withPackages (ps : with ps; [ six pyparsing ]);
  
  