slackbuilds-current/haskell/haskell-polyparse/README

A variety of alternative parser combinator libraries, including the
original HuttonMeijer set. The Poly sets have features like good error
reporting, arbitrary token type, running state, lazy parsing, and so
on. Finally, Text.Parse is a proposed replacement for the standard
Read class, for better deserialisation of Haskell values from Strings.

After uninstalling, run this command to unregister the package from
the ghc package database:   ghc-pkg recache