On Mon, Dec 31, 2007 at 09:14:04AM -0500, Isaac Dupree wrote: > I guess boxed types are too risky for efficiency reasons in some parts > of the code Again, I'd hope that that isn't true for modern GHC, and I personally would love to see less unboxed hackery in GHC's sources; I think it sends a bad message: that this sort of thing is necessary to get good performance. Thanks Ian