libghc-mmorph-doc 1.0.9-1 (amd64 binary) in ubuntu bionic

 This library provides monad morphism utilities, most commonly used
 for manipulating monad transformer stacks.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.