On Mon, Dec 5, 2011 at 6:09 AM, Yves Parès <limestrael@gmail.com> wrote:However the performance issues seem odd: text is based on bytestring.This is not the case. Text is based on ByteArray#, GHC internal type for blocks of bytes. The text package depends on the bytestring package because it allows you to encode/decode Text<->ByteString.-- Johan