anchor.diff:    enableParallelBuilding = true;
   
     meta = {
  -    description = "Enlightenment Core libraries";
  +    description = "Enlightenment foundation libraries";
       homepage = http://enlightenment.org/;
       maintainers = with stdenv.lib.maintainers; [ matejc tstrobel ftrvxmtrx ];
       platforms = stdenv.lib.platforms.linux;
  
positive.code: { stdenv, fetchurl, pkgconfig, openssl, libjpeg, zlib, freetype, fontconfig, fribidi, SDL2, SDL, mesa, giflib, libpng, libtiff, glib, gst_all_1, libpulseaudio, libsndfile, xorg, libdrm, libxkbcommon, udev, utillinux, dbus, bullet, luajit, python27Packages, openjpeg, doxygen, expat, harfbuzz, jbig2dec, librsvg, dbus_libs, alsaLib, poppler, libraw, libspectre, xineLib, libwebp, curl, libinput, systemd }:
  
  
  stdenv.mkDerivation rec {
    name = "efl-${version}";
    version = "1.17.2";
  
    src = fetchurl {
      url = "http://download.enlightenment.org/rel/libs/efl/${name}.tar.xz";
      sha256 = "1dpq5flygrjg931nzsr2ra8icqffzrzbs1lnrzarbpsbmgq3zacs";
    };
  
    nativeBuildInputs = [ pkgconfig ];
  
    buildInputs = [ openssl zlib freetype fontconfig fribidi SDL2 SDL mesa
      giflib libpng libtiff glib gst_all_1.gstreamer gst_all_1.gst-plugins-base
      gst_all_1.gst-libav libpulseaudio libsndfile xorg.libXcursor xorg.printproto
      xorg.libX11 udev utillinux systemd ];
  
  
negative.code:     xorg.libXdamage xorg.libXinerama xorg.libXp xorg.libXtst xorg.libXi xorg.libXext
      bullet xorg.libXScrnSaver xorg.libXrender xorg.libXfixes xorg.libXrandr
      xorg.libxkbfile xorg.libxcb xorg.xcbutilkeysyms openjpeg doxygen expat luajit
      harfbuzz jbig2dec librsvg dbus_libs alsaLib poppler ghostscript libraw libspectre xineLib libwebp curl libdrm
      libinput ];
  
    # ac_ct_CXX must be set to random value, because then it skips some magic which does alternative searching for g++
    configureFlags = [ "--enable-sdl" "--enable-drm" "--enable-elput" "--with-opengl=full"
      "--enable-image-loader-jp2k" "--enable-xinput22" "--enable-multisense" "--enable-liblz4" "--enable-systemd"
      "--enable-image-loader-webp" "--enable-harfbuzz" "--enable-xine" "--enable-fb"
      "--disable-tslib" "--with-systemdunitdir=$out/systemd/user"
      "ac_ct_CXX=foo" ];
  
    patches = [ ./efl-elua.patch ];
  
    preConfigure = ''
      export LD_LIBRARY_PATH="$(pwd)/src/lib/eina/.libs:$LD_LIBRARY_PATH"
    '';
  
  