anchor.diff:  { stdenv
   , fetchurl
  +, gcc
  +, removeReferencesTo
   , cpp ? false
   , gfortran ? null
   , zlib ? null
  
positive.code: 
    patches = [./bin-mv.patch];
  
    meta = {
      description = "Data model, library, and file format for storing and managing data";
      longDescription = ''
  
negative.code:     inherit mpi;
    };
  
    nativeBuildInputs = [ removeReferencesTo ];
  
    buildInputs = []
      ++ optional (gfortran != null) gfortran
      ++ optional (szip != null) szip;
  