{ stdenv, fetchurl, unzip, jdk, pkgconfig, gtk
, libXtst
, libXi
, mesa
, webkit
, libsoup
}:

let
  platformMap = {
    "x86_64-linux" =
      { platform = "gtk-linux-x86_64";
        sha256 = "0hq48zfqx2p0fqr0rlabnz2pdj0874k19918a4dbj0fhzkhrh959"; };
    "i686-linux" =
      { platform = "gtk-linux-x86";
        sha256 = "10si8kmc7c9qmbpzs76609wkfb784pln3qpmra73gb3fbk7z8caf"; };
    "x86_64-darwin" =
      { platform = "cocoa-macosx-x86_64";
        sha256 = "1565gg63ssrl04fh355vf9mnmq8qwwki3zpc3ybm7bylgkfwc9h4"; };
  };

  metadata = assert platformMap ? ${stdenv.system}; platformMap.${stdenv.system};

in stdenv.mkDerivation rec {
  version = "3.7.2";
  fullVersion = "${version}-201202080800";
  name = "swt-${version}";

  builder = ./builder.sh;

  # Alas, the Eclipse Project apparently doesn't produce source-only
  # releases of SWT.  So we just grab a binary release and extract
  # "src.zip" from that.
  src = fetchurl {
    url = "http://archive.eclipse.org/eclipse/downloads/drops/R-${fullVersion}/${name}-${metadata.platform}.zip";
    sha256 = metadata.sha256;
  };

  buildInputs = [unzip jdk pkgconfig gtk libXtst libXi mesa webkit libsoup];
  inherit jdk;
}