| typecheck/TcSimplify.lhs:22: | Module `TcUnify' (hi-boot interface) does not export `unifyTauTy' | make[1]: *** [stage2/typecheck/TcSimplify.o] Error 1 | make[1]: Leaving directory `/usr/local/src/ghc-current/ghc/compiler' | make: *** [stage2] Error 2

This is now fixed. BTW, cvs-ghc@haskell.org is a better place for bug reports related to the CVS version of GHC. Cheers, Simon