haskell@gentoo.org Gentoo Haskell This package provides a pure interface for compressing and decompressing streams of data represented as lazy 'ByteString's. It uses the zlib C library so it has high performance. It supports the \"zlib\", \"gzip\" and \"raw\" compression formats. It provides a convenient high level API suitable for most tasks and for the few cases where more control is needed it provides access to the full zlib feature set.