anchor.diff:    version = "1.0.0-beta1";
   
     wheel = rustPlatform.buildRustPackage rec {
  -    name = "${pname}-${version}-py${python.version}";
  +    inherit pname version;
   
       src = fetchFromGitHub {
         owner = "wasmerio";
  
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:       sha256 = "0302lcfjlw7nz18nf86z6swhhpp1qnpwcsm2fj4avl22rsv0h78j";
      };
  
      cargoHash = "sha256-Rq5m9Lu6kePvohfhODLMOpGPFtCh0woTsQY2TufoiNQ=";
  
      nativeBuildInputs = [ maturin python ];
  
  