yosys: 0.33 -> 0.34

in stdenv.mkDerivation rec {

  pname   = "yosys";

  version = "0.33";

  version = "0.34";

  src = fetchFromGitHub {

    owner = "YosysHQ";

    repo  = "yosys";

    rev   = "${pname}-${version}";

    hash  = "sha256-3MsWF161pqqeAbmeTlkQY6UpU4pq1WT0XXK9yciwt0M=";

    rev   = "refs/tags/${pname}-${version}";

    hash  = "sha256-GHDsMBj7DRb9ffESgzd1HzDAA6Cyft5PomidvIMzn9g=";

  };

  enableParallelBuilding = true;