args:
args.stdenv.mkDerivation {
  name = "proj-4.5.0";

  src = args.fetchurl {
    url = ftp://ftp.remotesensing.org/proj/proj-4.5.0.tar.gz;
    sha256 = "1d2qz0vgp13hkfgaz7hkblhb9w2fh2blbjqz73xdinwc08cmflqv";
  };

  buildInputs =(with args; []);

  meta = { 
      description = "Cartographic Projections Library";
      homepage = http://proj.maptools.org;
      license = "MIT";
  };
}