I am happy to announce that as of the 0.5.20090304 release, the default jhc install comes with a few more packages that make it a lot easier to compile random code out there, applicative: Control.Applicative, Control.Arrow, Control.Category, Data.Foldable, Data.Traversable containers: Data.Graph, Data.IntMap, Data.IntSet, Data.Map, Data.Sequence, Data.Set, Data.Tree They are included in the tarball and rpms and the default build. you have to pull containers from the darcs repository as mentioned on the building page, but other than that it builds directly from the shared containers source with no hackery required! Information on installing jhc is here: http://repetae.net/computer/jhc/building.shtml and the main jhc page is here: http://repetae.net/computer/jhc John -- John Meacham - ⑆repetae.net⑆john⑈