haskell@gentoo.org Gentoo Haskell This package contains functions (like 'view' or '+=') which work on 'MonadReader', 'MonadWriter', and 'MonadState' from the mtl package. This package is a part of the <http://hackage.haskell.org/package/microlens microlens> family; see the readme <https://github.com/aelve/microlens#readme on Github>.