anchor.diff:        Features: https://github.com/xiph/rav1e#features
       '';
       inherit (src.src.meta) homepage;
  +    changelog = "https://github.com/xiph/rav1e/releases/tag/v${version}";
       license = licenses.bsd2;
       maintainers = [ maintainers.primeos ];
       platforms = platforms.all;
  
positive.code:     '';
    };
  
    cargoSha256 = "0n6gkn4iyqk4bijrvcpq884hiihl4mpw1p417w1m0dw7j4y4karn";
  
    nativeBuildInputs = [ nasm ];
  
  
negative.code: 
  rustPlatform.buildRustPackage rec {
    pname = "rav1e";
    version = "0.3.2";
  
    src = stdenv.mkDerivation rec {
      name = "${pname}-${version}-source";
  