{ stdenv, fetchurl, alsaLib, boost, glib, jackaudio, ladspaPlugins
, libarchive, liblrdf , libsndfile, pkgconfig, qt4, scons, subversion }:

stdenv.mkDerivation rec {
  version = "0.9.5";
  name = "hydrogen-${version}";

  src = fetchurl {
    url = "mirror://sourceforge/hydrogen/hydrogen-${version}.tar.gz";
    sha256 = "1hyri49va2ss26skd6p9swkx0kbr7ggifbahkrcfgj8yj7pp6g4n";
  };

  buildInputs = [ 
    alsaLib boost glib jackaudio ladspaPlugins libarchive liblrdf
    libsndfile pkgconfig qt4 scons subversion
  ];

  patches = [ ./scons-env.patch ];

  postPatch = ''
    sed -e 's#/usr/lib/ladspa#${ladspaPlugins}/lib/ladspa#' -i libs/hydrogen/src/preferences.cpp
    sed '/\/usr/d' -i libs/hydrogen/src/preferences.cpp
    sed "s#pkg_ver.rstrip().split('.')#pkg_ver.rstrip().split('.')[:3]#" -i Sconstruct
  '';

  # why doesn't scons find librdf?
  buildPhase = ''
    scons prefix=$out libarchive=1 lrdf=0 install
  '';

  installPhase = ":";

  meta = with stdenv.lib; {
    description = "Advanced drum machine";
    homepage = http://www.hydrogen-music.org;
    license = licenses.gpl2;
    platforms = platforms.linux;
    maintainers = [ maintainers.goibhniu ];
  };
}