I wonder if it is possible to create a generic options definition serialization/exchange format in JSON?

Then the stuff like Markdown help, man pages and command line completion (https://github.com/urfave/cli/pull/1606/files) could be generated from that JSON format by external tools without bloating the size of urfave/cli binaries (#1594).

I already tried to play with that a bit with Python here - abitrolly/podman-compose@0cd4197 - so it is possible to extract that bit to see if urfave/cli export and Python argparse export can be compatible.