lxml<5;python_version<"3"
lxml>=4.2.1;python_version>="3"
libcomxml
cryptography==3.3.2;python_version<"3"
cryptography>=3.3.2;python_version>="3"
signxml==2.9.0;python_version<"3"
signxml>=4,<5;python_version>="3"
