The new 0.7 release of the <a href="http://hackage.haskell.org/package/text">text package</a> adds support for Unicode I/O, using either the new locale-aware Handle code in 6.12 or a fallback on older releases.<div><br></div>
<div>Details: <a href="http://www.serpentine.com/blog/2009/12/15/data-text-0-7-gains-io-support/">http://www.serpentine.com/blog/2009/12/15/data-text-0-7-gains-io-support/</a></div>