libargs-dev 6.4.1-1 (amd64 binary) in ubuntu oracular

 Args is a simple, small, flexible, header-only C++ argument
 parssing library.
 .
 This is designed to appear somewhat similar to Python's argparse, but in
 C++, with static type checking, and hopefully a lot faster (also
 allowing fully nestable group logic, where Python's argparse does not).