anchor.diff:        sha256 = "0302lcfjlw7nz18nf86z6swhhpp1qnpwcsm2fj4avl22rsv0h78j";
       };
   
  -    cargoSha256 = "0d83dniijjq8rc4fcwj6ja5x4hxh187afnqfd8c9fzb8nx909a0v";
  +    cargoHash = "sha256-Rq5m9Lu6kePvohfhODLMOpGPFtCh0woTsQY2TufoiNQ=";
   
       nativeBuildInputs = [ maturin python ];
   
  
positive.code: in
  buildPythonPackage rec {
    inherit pname version;
    # we can only support one python version because the cargo hash changes with the python version
    disabled = !isPy38;
  
    format = "wheel";
    src = wheel;
  
negative.code:   version = "1.0.0-beta1";
  
    wheel = rustPlatform.buildRustPackage rec {
      inherit pname version;
  
      src = fetchFromGitHub {
        owner = "wasmerio";
  