Binary package “libghc-set-extra-doc” in ubuntu hirsute

utility functions for working with sets; documentation

 This package provides function that are commonly needed when working with
 sets, but are not part of the standard library.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.