anchor.diff:    buildInputs = [ cmake
                     netcdf
                     gfortran
  -                  jasper
                     libpng
  +                  openjpeg
                   ] ++ stdenv.lib.optionals enablePython [
                     pythonPackages.python
                   ];
  
positive.code:     sha256 = "0qbj12ap7yy2rl1pq629chnss2jl73wxdj1lwzv0xp87r6z5qdfl";
    };
  
    preConfigure = ''
      # Fix "no member named 'inmem_' in 'jas_image_t'"
      substituteInPlace "src/grib_jasper_encoding.c" --replace "image.inmem_    = 1;" ""
  
negative.code:     homepage = https://software.ecmwf.int/wiki/display/GRIB/Home;
      license = licenses.asl20;
      platforms = with platforms; linux ++ darwin;
      description = "ECMWF Library for the GRIB file format -- DEPRECATED";
      longDescription = ''
        The ECMWF GRIB API is an application program interface accessible from C,
        FORTRAN and Python programs developed for encoding and decoding WMO FM-92
        GRIB edition 1 and edition 2 messages.
  
        Please note: GRIB-API support is being discontinued at the end of 2018.
        After which there will be no further releases. Please upgrade to ecCodes
      '';
      maintainers = with maintainers; [ knedlsepp ];
    };
  }
  