anchor.diff:  { lib
  +, stdenv
   , archinfo
   , bitstring
   , fetchPypi
  
positive.code:     homepage = "https://github.com/angr/pyvex";
      license = with licenses; [ bsd2 gpl3Plus lgpl3Plus ];
      maintainers = with maintainers; [ fab ];
    };
  }
  
negative.code: 
  buildPythonPackage rec {
    pname = "pyvex";
    version = "9.0.5903";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "sha256-qhLlRlmb48zhjX2u9w6TVVv2gb0E9kSapabiv+u4J2s=";
    };
  
    propagatedBuildInputs = [
  