I have created binary bundles for HTk, our Haskell interface to Tcl/Tk,
for ghc5.04.3 on Linux/x86 and Windows, and put them on the download page:
http://www.informatik.uni-bremen.de/htk/download/INSTALL.BINARY.html
I will add FreeBSD and Solaris bundles when I can get hold of ghc5.04.3
on those platforms.