anchor.diff:     preshed
      thinc
      plac
  -   six
  -   html5lib
      ujson
      dill
      requests
  
positive.code: 
  buildPythonPackage rec {
    pname = "spacy";
    version = "2.0.16";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "1ghgbv819ff4777904p1kzayq1dj34i7853anvg859sak59r7pj1";
    };
  
    prePatch = ''
      substituteInPlace setup.py \
        --replace "regex==" "regex>=" \
        --replace "plac<1.0.0,>=0.9.6" "plac>=0.9.6" \
        --replace "thinc>=6.12.0,<6.13.0" "thinc>=6.12.0" \
        --replace "wheel>=0.32.0,<0.33.0" "wheel>=0.31.0"
    '';
  
    propagatedBuildInputs = [
  
negative.code: , buildPythonPackage
  , fetchPypi
  , pythonOlder
  , pytest
  , preshed
  , ftfy
  , numpy
  , murmurhash
  , plac
  , ujson
  , dill
  , requests
  