{ stdenv, fetchurl, pkgconfig
, libX11, libXext, libXft }:

let version = "1.40"; in
stdenv.mkDerivation {
  pname = "windowlab";
  inherit version;

  src = fetchurl {
    url = "http://nickgravgaard.com/windowlab/windowlab-${version}.tar";
    sha256 = "1fx4jwq4s98p2wpvawsiww7d6568bpjgcjpks61dzfj8p2j32s4d";
  };

  nativeBuildInputs = [ pkgconfig ];
  buildInputs = [ libX11 libXext libXft ];

  postPatch =
    ''
      mv Makefile Makefile.orig
      echo \
         "
          DEFINES += -DXFT
          EXTRA_INC += $(pkg-config --cflags xft)
          EXTRA_LIBS += $(pkg-config --libs xft)
         " > Makefile
      sed "s|/usr/local|$out|g" Makefile.orig >> Makefile
    '';

  meta = with stdenv.lib;
    { description = "Small and simple stacking window manager";
      homepage    = "http://nickgravgaard.com/windowlab/";
      license     = licenses.gpl2;
      maintainers = with maintainers; [ ehmry ];
      platforms   = platforms.linux;
    };
}