I can't install tasty with cabal. Anyone with the same issue or a fix? $ cabal install tasty ... Test\Tasty\Core.hs:147:11: Not in scope: `witness' -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.haskell.org/pipermail/haskell-cafe/attachments/20130829/ad942df2/attachment.htm>