anchor.diff:    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
  +    libX11 libXcursor libXdamage libXext libXi libXinerama libXrandr libXrender libXv libXtst
       libxkbcommon libxkbfile
  -    wayland
  +    wayland libusb1
  +    libxslt
     ] ++ optional stdenv.isLinux systemd;
   
     nativeBuildInputs = [
  
positive.code: { stdenv, lib, fetchFromGitHub, cmake, pkgconfig
  , 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, libunwind, orc
  , libpulseaudio ? null
  , cups ? null
  , pcsclite ? null
  
negative.code:     '';
      homepage = "http://www.freerdp.com/";
      license = licenses.asl20;
      maintainers = with maintainers; [ peterhoeg lheckemann ];
      platforms = platforms.unix;
    };
  }
  