draco: 1.5.5 -> 1.5.6

  cmakeBool = b: if b then "ON" else "OFF";

in

stdenv.mkDerivation rec {

  version = "1.5.5";

  version = "1.5.6";

  pname = "draco";

  src = fetchFromGitHub {

    owner = "google";

    repo = "draco";

    rev = version;

    sha256 = "sha256-WYWEUfBPz/Pt7sE8snG3/LnOA3DEUm/SUVLtsH7zG5g=";

    hash = "sha256-2YQMav0JJMbJ2bvnN/Xv90tjE/OWLbrZDO4WlaOvcfI=";

    fetchSubmodules = true;

  };

  # ld: unknown option: --start-group

  postPatch = ''

    substituteInPlace cmake/draco_targets.cmake \

      --replace "^Clang" "^AppleClang"

  '';

  buildInputs = [ gtest ]

    ++ lib.optionals withTranscoder [ eigen ghc_filesystem tinygltf ];