Hi, I get this on OS X: == running git submodule update fatal: https://github.com/ghc/libraries/Cabal/info/refs not found: did you run git update-server-info on the server? Unable to fetch in submodule path 'libraries/Cabal' git failed: 256 at ./sync-all line 116. This happens even if I use darcs.haskell.org i.e. through ./sync-all --testsuite -r http://darcs.haskell.org/ --no-dph get If it helps, I do have this patch from earlier today: commit 8a1b7eb6add9d873a93f8e12ccf507bfe0d1df7e Author: Ian Lynagh <ian@well-typed.com> Date: Tue Apr 30 00:42:31 2013 +0100 Fix build on OS X sed on OS X doesn't handle \+ which doesn't seem to fix the problem.