anchor.diff:  { stdenv, lib, fetchFromGitHub, cmake, pkgconfig
  -, alsaLib, ffmpeg_2, glib, openssl, pcre, zlib
  +, alsaLib, ffmpeg, glib, openssl, pcre, zlib
   , libX11, libXcursor, libXdamage, libXext, libXi, libXinerama, libXrandr, libXrender, libXv
   , libxkbcommon, libxkbfile
   , wayland
  -, gstreamer, gst-plugins-base, gst-plugins-good
  +, gstreamer, gst-plugins-base, gst-plugins-good, libunwind, orc
   , libpulseaudio ? null
   , cups ? null
   , pcsclite ? null
  
positive.code: 
  stdenv.mkDerivation rec {
    name = "freerdp-${version}";
    version = "2.0.0-rc1";
  
    src = fetchFromGitHub {
      owner  = "FreeRDP";
      repo   = "FreeRDP";
      rev    = version;
      sha256 = "0m28n3mq3ax0j6j3ai4pnlx3shg2ap0md0bxlqkhfv6civ9r11nn";
    };
  
    # outputs = [ "bin" "out" "dev" ];
  
negative.code:   '';
  
    buildInputs = with lib; [
      alsaLib cups ffmpeg glib openssl pcre pcsclite libpulseaudio zlib
      gstreamer gst-plugins-base gst-plugins-good libunwind orc
      libX11 libXcursor libXdamage libXext libXi libXinerama libXrandr libXrender libXv
      libxkbcommon libxkbfile
      wayland
  