anchor.diff:                    qtbase
                     qtx11extras
                     x264
  +                  makeWrapper
                   ]
                   ++ optional alsaSupport alsaLib
                   ++ optional pulseaudioSupport libpulseaudio;
  
positive.code: , libv4l
  , x264
  , curl
  
  , alsaSupport ? false
  , alsaLib
  
negative.code:   optional = stdenv.lib.optional;
  in stdenv.mkDerivation rec {
    name = "obs-studio-${version}";
    version = "0.15.2";
  
    src = fetchFromGitHub {
      owner = "jp9000";
      repo = "obs-studio";
      rev = "${version}";
      sha256 = "0vw203a1zj2npras589ml6gr5s11h9bhaica90plrh5ajayg0qwj";
    };
  
    nativeBuildInputs = [ cmake
  