redirecting stdin/stdout

I would like to be able to semi-permanently redirect stdout particularly. That is, say something like: main = do h <- openFile "myoutput" WriteMode setStdOut h ..crux of the program.. hClose h where any call which uses stdout either explicitly or implicitly (through putStr and the like) is redirecto to h. I didn't see anything of this sort in either the std libs IO or in the GHC.IO/IOBase modules...would such a thingbe possible? - Hal -- Hal Daume III "Computer science is no more about computers | hdaume@isi.edu than astronomy is about telescopes." -Dijkstra | www.isi.edu/~hdaume