Hi. For my chessIO package, I wrote a module to communicate with UCI (Universal Chess Interface) speaking chess engines. This sort of thing is pretty new to me. I settled to use attoparsec for parsing and TChan to feed incoming data to the library users. This is the first thing that I found which looked like it could work... I would be thrilled if someone with more experience in this area would give my approach a review. Let me know if something is glaringly unidiomatic, I am sure you will find things. https://github.com/mlang/chessIO/blob/master/src/Game/Chess/UCI.hs This is for me to learn, and to avoid putting weird stuff on hackage... I actually prefer private mail, but a GitHub issue or even a PR are also highly welcome. Thanks. -- CYa, ⡍⠁⠗⠊⠕