anchor.diff:        readline libsndfile udev libical
         # Disables GStreamer; not clear what it gains us other than a
         # zillion extra dependencies.
  -      # gstreamer gst_plugins_base 
  +      # gstreamer gst_plugins_base
       ];
   
  +  outputs = [ "dev" "out" "test" ];
  +
     patches = [ ./bluez-5.37-obexd_without_systemd-1.patch ];
  -    
  +
     preConfigure = ''
         substituteInPlace tools/hid2hci.rules --replace /sbin/udevadm ${systemd}/bin/udevadm
         substituteInPlace tools/hid2hci.rules --replace "hid2hci " "$out/lib/udev/hid2hci "
  
positive.code:   # FIXME: Move these into a separate package to prevent Bluez from
    # depending on Python etc.
    postInstall = ''
      mkdir $out/test
      cp -a test $out
      pushd $out/test
      for a in \
              simple-agent \
              test-adapter \
  
negative.code: 
  stdenv.mkDerivation rec {
    name = "bluez-5.37";
  
    src = fetchurl {
      url = "mirror://kernel/linux/bluetooth/${name}.tar.xz";
      sha256 = "c14ba9ddcb0055522073477b8fd8bf1ddf5d219e75fdfd4699b7e0ce5350d6b0";
  