monad-io-adapter (hackage): This package provides utilities for converting between computations parameterized via two different typeclasses MonadIO and MonadBase, both of which can be used to abstract over monad transformer stacks with IO at the base. Unfortunately, both classes are frequently used in the Haskell ecosystem, since they have minor differences.  Due to these typeclasses being unrelated, it’s not entirely uncommon to end up with type signatures like (MonadIO m, MonadBaseControl IO m) => ..., which are a little silly, since MonadBaseControl IO really includes all the power of MonadIO.  To help alleviate this problem, this package provides a set of utilities for converting between the two constraints in situations where possible.
Keywords: control|library