Our GHC repositories on darcs.haskell.org have now been upgraded to "hashed" format, with some nice consequences: - Using --lazy, getting a GHC repo over the network only takes a few minutes - No need to download tarballs any more - No complicated instructions about how to avoid case-insensitive filesystem issues on Windows and Mac The new simpler instructions are here: http://hackage.haskell.org/trac/ghc/wiki/Building/GettingTheSources We recommend using darcs 2.4 or later for the best performance. Note that there are issues with 2.4 on Windows right now [1], so it might be handy to have an earlier version hanging around too, eg. 2.3.1. comments welcome! Cheers, Simon http://lists.osuosl.org/pipermail/darcs-users/2010-April/023736.html