Sorry, probably stupid questions for knowledgeable folks, but after having built for a couple of hours, make died with if ifBuildable/ifBuildable base; then \ cd base && setup/Setup haddock --html-location='../$pkg' \ --hyperlink-source; \ fi Preprocessing library base-3.0.2.0... Running hscolour for base-3.0.2.0... Preprocessing library base-3.0.2.0... Running Haddock for base-3.0.2.0... Warning: The documentation for package rts-1.0 is not installed. No links to it will be generated. Setup: Haddock's internal GHC version must match the configured GHC version make[1]: *** [doc.library.base] Fehler 1 make[1]: Leaving directory `/home/dafis/HasCom/ghc-6.8.3/libraries' make: *** [stage1] Fehler 2 So, what is Haddock's internal GHC version? Is it the version, haddock was built with? And what is the configured GHC version, is it the one I'm trying to build or the one I'm building with? If the former, I seem to have landed in a circulus vitiosus, if the latter, that is the GHC, haddock was built with, too. For the record: dafis@linux:~/HasCom/ghc-6.8.3> haddock --version Haddock version 2.1.0, (c) Simon Marlow 2006 Ported to use the GHC API by David Waern 2006-2008 How should I proceed now? Thanks, Daniel