Hi, we used redirect output of ghc via "tee" (within a Makefile). With the new ghc this randomly fails now. Does anyone have an explanation for this? ghc <<omitted args>> 2>&1 | tee log yields: Skipping Main ( hets.hs, hets.o ) Linking ... tee: write error The linked binary and the log file are ok afterwards (and the mere size of the log is also no problem). Cheers Christian