libghc-wai-extra-doc 3.1.12.1-1build1 (amd64 binary) in ubuntu lunar

 wai is a common protocol for communication between web aplications and web
 servers.
 .
 This library provides some common features not tied to a particular web
 application or web server.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.