Hi, I've just released version 2.0.0 of the Communicating Haskell Processes (CHP) message-passing concurrency library onto Hackage. The main change from 1.x is that I have split the functionality into two libraries: the core functionality remains in the chp package (now version 2.0.0), while some of the additional capabilities have been moved out to the new chp-plus package (version 1.0.0). This should help in the long run by keeping the packages from becoming too large, and by allowing me to trim the dependencies of the core chp package. I've written more about the changes here, for those who it will affect: http://chplib.wordpress.com/2010/01/11/splitting-chp/ This will require small changes to your build system if you're using CHP and you upgrade to the new versions. The new versions should also fix build troubles with GHC 6.12 -- let me know if you have any troubles installing under 6.10 or 6.12. Hackage links: http://hackage.haskell.org/package/chp-2.0.0 http://hackage.haskell.org/package/chp-plus-1.0.0 Thanks, Neil.