anchor.diff:    };
   in rustPlatform.buildRustPackage rec {
     pname = "tokenizers";
  -  version = "0.9.2";
  +  version = "0.9.4";
   
     src = fetchFromGitHub {
       owner = "huggingface";
       repo = pname;
       rev = "python-v${version}";
  -    sha256 = "0rsm1g5zfq3ygdb3s8v9xqqpgfzvvkc4n5ik3ahy8sw7pyjljb4m";
  +    hash = "sha256-JXoH9yfhMIFg5qDY5zrF6iWb7XKugjMfk1NxSizfaWg=";
     };
   
  -  cargoSha256 = "0yn699dq9hdjh7fyci99ni8mmd5qdhzrsi80grzgf5cch8g38rbi";
  +  cargoSha256 = "sha256-u9qitrOxJSABs0VjwHUZgmw7VTQXNbp6l8fKKE/RQ7M=";
   
     sourceRoot = "source/bindings/python";
   
  
positive.code:     url = "https://norvig.com/big.txt";
      sha256 = "0yz80icdly7na03cfpl0nfk5h3j3cam55rj486n03wph81ynq1ps";
    };
    openaiVocab = fetchurl {
      url = "https://s3.amazonaws.com/models.huggingface.co/bert/openai-gpt-vocab.json";
      sha256 = "0y40gc9bixj5rxv674br1rxmxkd3ly29p80x1596h8yywwcrpx7x";
  
negative.code:       ln -s ${robertaMerges} roberta-base-merges.txt
        ln -s ${albertVocab} albert-base-v1-tokenizer.json
        ln -s ${bertVocab} bert-base-uncased-vocab.txt
        ln -s ${docPipelineTokenizer} bert-wiki.json
        ln -s ${docQuicktourTokenizer} tokenizer-wiki.json
        ln -s ${norvigBig} big.txt
        ln -s ${openaiVocab} openai-gpt-vocab.json
        ln -s ${openaiMerges} openai-gpt-merges.txt )
  