anchor.diff:  , buildPythonPackage
   , isPy3k
   , fetchFromGitHub
  -, fetchpatch
   , substituteAll
   , xmlsec
  -, cryptography, defusedxml, future, pyopenssl, dateutil, pytz, requests, six
  -, mock, pyasn1, pymongo, pytest, responses
  +, cryptography, defusedxml, pyopenssl, dateutil, pytz, requests, six
  +, mock, pyasn1, pymongo, pytest, responses, xmlschema, importlib-resources
   }:
   
   buildPythonPackage rec {
     pname = "pysaml2";
  -  version = "5.0.0";
  +  version = "6.5.1";
   
     disabled = !isPy3k;
   
  
positive.code:     sed -i 's/2999\(-.*T\)/2029\1/g' tests/*.xml
    '';
  
    propagatedBuildInputs = [ cryptography defusedxml future pyopenssl dateutil pytz requests six ];
  
    checkInputs = [ mock pyasn1 pymongo pytest responses ];
  
  
negative.code:     owner = "IdentityPython";
      repo = pname;
      rev = "v${version}";
      sha256 = "1gh74csjk6af23agyigk4id79s4li1xnkmbpp73aqyvlly2kd0b7";
    };
  
    patches = [
      (substituteAll {
        src = ./hardcode-xmlsec1-path.patch;
        inherit xmlsec;
      })
    ];
  
  