@hackage/lens
Lenses, Folds and Traversals
@hackage/base
Core data structures and operations
@hackage/mtl
Monad classes for transformers, using functional dependencies
@hackage/transformers
Concrete functor and monad transformers
@hackage/containers
Assorted concrete container types
@hackage/cpphs
A liberalised re-implementation of cpp, the C pre-processor.
@hackage/parsec
Monadic parser combinators