Log Message:
Import hs-parsec-3.0.0 as wip/hs-parsec.

Parsec is designed from scratch as an industrial-strength parser
library. It is simple, safe, well documented (on the package
homepage), has extensive libraries and good error messages, and is
also fast. It is defined as a monad transformer that can be stacked on
arbitrary monads, and it is also parametric in the input stream type.