This is cool, thank you. I’m the kind of developer who runs ssh-keygen to follow the interactive dialog. It’s annoying to need to learn a special, unrelated DSL (how to use a CLI app) just to get some other task done. I think it’s a legacy anti-pattern, TBH. I already need to truly know 10–20 languages that actually produce value. I’ll avoid spending time learning yet another that doesn’t actually generate business value.
That being said, Golang blows every chimp in the zoo, IMO. I’m not going to be contributing any time soon. 
In some perfect world, your code would work in Elixir and be DRY vis a vis the existing argument parser.
