slackbuilds/haskell/haskell-zlib/README

This is a library for Haskell programs. It provides a pure interface
for compressing and decompressing streams of data represented
as lazy ByteStrings.  It uses the zlib C library so it has high
performance. It supports the "zlib", "gzip" and "raw" compression
formats.

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