libghc-text-doc 1.2.2.1-3build1 (amd64 binary) in ubuntu zesty

 This is a Haskell time and space-efficient implementation of Unicode
 text using packed Word16 arrays. Suitable for performance critical use,
 both in terms of large data quantities and high speed.
 .
 It supports many basic string operations and has some substring search
 tools.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.