anchor.diff:      sha256 = "0jh7filpf5dk5iz5acj7y3y49ihnzqypxckdlj0sjigbqq6hlsmf";
     };
   
  -  buildInputs = [ unzip libjpeg libtiff libpng proj openssl sqlite libspatialite ]
  +  buildInputs = [ unzip libjpeg libtiff libpng proj openssl sqlite
  +    libspatialite poppler ]
     ++ (with pythonPackages; [ python numpy wrapPython ])
     ++ stdenv.lib.optional stdenv.isDarwin libiconv
     ++ stdenv.lib.optionals netcdfSupport [ netcdf hdf5 curl ];
  
positive.code: { stdenv, fetchurl, composableDerivation, unzip, libjpeg, libtiff, zlib
  , postgresql, mysql, libgeotiff, pythonPackages, proj, geos, openssl
  , libpng, sqlite, libspatialite
  , libiconv
  , netcdfSupport ? true, netcdf, hdf5 , curl
  }:
  
negative.code:     "--with-jpeg=${libjpeg.dev}"
      "--with-libtiff=${libtiff.dev}" # optional (without largetiff support)
      "--with-png=${libpng.dev}"      # optional
      "--with-poppler=${poppler.dev}" # optional
      "--with-libz=${zlib.dev}"       # optional
      "--with-pg=${postgresql}/bin/pg_config"
      "--with-mysql=${mysql.lib.dev}/bin/mysql_config"
  