anchor.diff:  , wcwidth
   , zstandard
   , setuptools
  +, git
   , withPcap ? true, dpkt, dnslib
   }:
   buildPythonApplication rec {
  
positive.code:     setuptools
    ] ++ lib.optionals withPcap [ dpkt dnslib ];
  
    doCheck = false;
  
    meta = {
      inherit version;
  
negative.code: { stdenv
  , lib
  , buildPythonApplication
  , fetchFromGitHub
  , dateutil
  , pandas
  