Having fun trying to come up with satysfying design pattern for Haskell application.
It's mostly about limited effects, free and "freer" monads..
Inspired by:
www.parsonsmatt.org/2016/07/14/rank_n_classy_limited_effects.html
http://degoes.net/articles/modern-fp
http://degoes.net/articles/modern-fp-part-2