AFAICT they both have similar restrictions relative to the OP's concerns. I found the article because I was searching far and wide and for to deal with uses cas

AFAICT they both have similar restrictions relative to the OP's concerns. I found the article because I was searching far and wide and for to deal with uses cases where one would typically use configure or pass a custom user command line option. They all have slick systems for organizing and reading built in options, but I couldn't find anything for adding configuration.