anchor.diff:      "--with-pg=${postgresql}/bin/pg_config"
       "--with-mysql=${mysql.lib}/bin/mysql_config"
       "--with-geotiff=${libgeotiff}"
  +    "--with-python"               # optional
       "--with-static-proj4=${proj}" # optional
       "--with-geos=${geos}/bin/geos-config"# optional
  -    # Enabling built-in python bindings causes
  -    # http://hydra.nixos.org/build/21344907/nixlog/1/raw - disable for now
  -    #"--with-python"               # optional
     ];
   
     # Prevent this:
  
positive.code:     sha256 = "66bc8192d24e314a66ed69285186d46e6999beb44fc97eeb9c76d82a117c0845";
    };
  
    buildInputs = [ unzip libjpeg libtiff libpng proj openssl ]
      # ++ [ python pythonPackages.numpy ]
    ;
  
    patches = [
      # This ensures that the python package is installed into gdal's prefix,
  
negative.code: { stdenv, fetchurl, composableDerivation, unzip, libjpeg, libtiff, zlib
  , postgresql, mysql, libgeotiff, python, pythonPackages, proj, geos, openssl
  , libpng }:
  
  composableDerivation.composableDerivation {} (fixed: rec {
    version = "1.11.2";
  