Hi, I have a problem with the Eval class. Maybe its just that a compiler flag or import declaration is missing. I compiled with ghc-4.01/bin/ghc -c -fvia-C -syslib exts and got the error message: No instance for `Eval Int' OK, let's try instance Eval Int where seq x y = y -- because ints are already evaluated Then I got the error message: Class `Eval' does not have a method `seq' However, in the hugs standard prelude one can find the following definition: class Eval a where strict :: (a -> b) -> a -> b seq :: a -> b -> b It's *not* a special problem of ghc-4.01. Has somebody an idea what to do or can give me a hint on a report for the Eval class? Thanks in advance ------------------------------------------------------------------------------- Christoph Herrmann E-mail: [EMAIL PROTECTED] WWW: http://brahms.fmi.uni-passau.de/cl/staff/herrmann.html