args: with args;
let inherit (args.composableDerivation) composableDerivation edf; in
composableDerivation {} {

  buildInputs = [ "which" ]; # which is needed for the autogen.sh

  flags =
  # python and ruby untested 
    edf { name = "python"; enable = { buildInputs = [ python ]; }; };
    # (if args.use_svn then ["libtool" "autoconf" "automake" "swig"] else [])
    # // edf { name = "ruby"; enable = { buildInputs = [ ruby ]; };}

  name = "geos-3.0.3";

  src = fetchurl {
      url = http://download.osgeo.org/geos/geos-3.0.3.tar.bz2;
      sha256 = "1pxk20jcbyidp3bvip1vdf8wfw2wvh8pcn810qkf1y3zfnki0c7k";
  };

  # for development version. can be removed ?
  #configurePhase = "
  #  [ -f configure ] || \\
  #  LIBTOOLIZE=libtoolize ./autogen.sh
  #  [>{ automake --add-missing; autoconf; }
  #  unset configurePhase; configurePhase
  #";

  meta = {
      description = "C++ port of the Java Topology Suite (JTS)"
        + "- all the OpenGIS \"Simple Features for SQL\" spatial predicate functions and spatial operators,"
        + " as well as specific JTS topology functions such as IsValid";
      homepage = http://geos.refractions.net/;
      license = "GPL";
  };
}