The text-icu library is the more practical cousin to the text library, implementing a myriad of Unicode-related functionality that is not yet otherwise available in Haskell. It is implemented as bindings to the widely used ICU library.

http://hackage.haskell.org/package/text-icu

Features:
The library is thoroughly documented, and most interfaces are pure and easy to use.

Look for further releases over the coming weeks as I complete the ICU integration.