See https://github.com/python/cpython/commit/30322c497e0b8d978f7a0de95985aac9c5daf1ac ---- streamlink_cli currently defines nested argparse groups (as well as nested plugin args) for better organization in the docs: - https://github.com/streamlink/streamlink/blob/4.2.0/src/streamlink_cli/argparser.py#L760-L762 - https://github.com/streamlink/streamlink/blob/4.2.0/src/streamlink_cli/main.py#L861-L864 - https://github.com/streamlink/streamlink/blob/4.2.0/docs/ext_argparse.py#L134-L148 - https://streamlink.github.io/cli.html#stream-transport-options This needs to be changed and a different way needs to be found to have nested groups in the docs.