anchor.diff:      xorg.libXcursor
       xorg.xorgproto
       zlib
  +    # still missing parent icon themes: Mint-X, RAVE-X, Faenza
     ];
   
     propagatedBuildInputs = [
  
positive.code:     xorg.libxkbfile
      xorg.xcbutilkeysyms
    ];
  
    mesonFlags = [
      "--buildtype=release"
  
negative.code: { stdenv, fetchurl, meson, ninja, pkgconfig, SDL, SDL2, alsaLib,
    avahi, bullet, check, curl, dbus, doxygen, expat, fontconfig,
    freetype, fribidi, ghostscript, giflib, glib, gst_all_1, gtk3,
    harfbuzz, hicolor-icon-theme, ibus, jbig2dec, libGL, libdrm,
    libinput, libjpeg, libpng, libpulseaudio, libraw, librsvg,
    libsndfile, libspectre, libtiff, libwebp, libxkbcommon, luajit, lz4,
    mesa, openjpeg, openssl, poppler, python27Packages, systemd, udev,
    utillinux, writeText, xorg, zlib }:
  
  stdenv.mkDerivation rec {
    pname = "efl";
  