anchor.diff:  
   buildPythonPackage rec {
     pname = "spacy";
  -  version = "2.0.16";
  +  version = "2.0.18";
   
     src = fetchPypi {
       inherit pname version;
  -    sha256 = "1ghgbv819ff4777904p1kzayq1dj34i7853anvg859sak59r7pj1";
  +    sha256 = "0mybdms7c40jvk8ak180n65anjiyg4c8gkaqwkzicrd1mxq3ngqj";
     };
   
     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"
  +      --replace "plac<1.0.0,>=0.9.6" "plac>=0.9.6"
     '';
   
     propagatedBuildInputs = [
  
positive.code: , buildPythonPackage
  , fetchPypi
  , pythonOlder
  , html5lib
  , pytest
  , preshed
  , ftfy
  , numpy
  , murmurhash
  , plac
  , six
  , ujson
  , dill
  , requests
  
negative.code:    preshed
     thinc
     plac
     ujson
     dill
     requests
  