You can find the exercises on GitHub (see https://github.com/exercism/xhaskell https://github.com/exercism/xhaskell for example). They have their own workflow f

You can find the exercises on GitHub (see https://github.com/exercism/xhaskell https://github.com/exercism/xhaskell for example). They have their own workflow for the review process ("nitpicks" and "iterations") which could be grafted onto GitHub issues and pull requests, but it's not necessary and might just make beginners more self conscious about their stuff being open to anyone on GitHub.