@hackage multistate0.1.1

When using multiple ReaderT's or StateT's in the same monad stack, it becomes necessary to lift the operations in order to affect a specific transformer. Using heterogenous lists (type level functions), a GADT and a corresponding type class, this package provides transformers that remove that necessity: MultiReaderT/MultiStateT can contain a heterogenous list of values. The type inferred for the getter/setter determines which value is read/written. See the Example application for some very basic usage. This package currently lacks a complete set of "lifting instances", i.e. instance definitions for classes such as mtl's MonadReader "over" the newly introduced monad transformers. These "lifting instances" would be necessary to achieve full compatability with existing transformers. Ping me if you find anything specific missing.