We should consider some way to implement argparse functionality asked here:

https://stackoverflow.com/q/53686523/856090

It is unclear how exactly to do this. This message is a call to discuss what should be the information format and API.

The awful thing is that I may need to write my own command line parser, as current argparse seems to be unable to provide this functionality.

I think, I will implement this for my program sooner or later but the idea to write my own analogue of argparse somehow terrifies me.