anchor.diff:      maintainers = with maintainers; [ viric jgeerds ];
       platforms = platforms.all;
     };
  -}
  -
  +}
positive.code:   installPhase = ''
      mkdir -p $out/bin
      cp qtox $out/bin
    '';
  
    meta = with stdenv.lib; {
      description = "QT Tox client";
  
negative.code: { stdenv, fetchgit, pkgconfig, libtoxcore-dev, qt5, openal, opencv,
    libsodium, libXScrnSaver, glib, gdk_pixbuf, gtk2, cairo,
    pango, atk, qrencode, ffmpeg, filter-audio, makeWrapper }:
  
  stdenv.mkDerivation rec {
    name = "qtox-dev-20150624";
  