anchor.diff:      pipInstallPhase
     '';
   
  +  preCheck = ''
  +    HOME=$TMPDIR
  +  '';
  +
  +  disabledTests = [
  +    # Downloads data using the datasets module.
  +    "TestTrainFromIterators"
  +  ];
  +
     meta = with lib; {
       homepage = "https://github.com/huggingface/tokenizers";
       description = "Fast State-of-the-Art Tokenizers optimized for Research and Production";
  
positive.code:   };
  in rustPlatform.buildRustPackage rec {
    pname = "tokenizers";
    version = "0.9.4";
  
    src = fetchFromGitHub {
      owner = "huggingface";
      repo = pname;
      rev = "python-v${version}";
      hash = "sha256-JXoH9yfhMIFg5qDY5zrF6iWb7XKugjMfk1NxSizfaWg=";
    };
  
    cargoSha256 = "sha256-u9qitrOxJSABs0VjwHUZgmw7VTQXNbp6l8fKKE/RQ7M=";
  
    sourceRoot = "source/bindings/python";
  
  
negative.code:   ];
  
    installCheckInputs = [
      datasets
      pytestCheckHook
      requests
    ];
  