Thanks for all the hard work!

If you see this in OSX (#1009) while installing cabal 1.18:

Warning: could not create a symlink in /Users/lemao/Library/Haskell/bin for

cabal because the file exists there already but is not managed by cabal. You

can create a symlink for this executable manually if you wish. The executable

file has been installed at

/Users/user/Library/Haskell/ghc-7.6.3/lib/cabal-install-1.18.0/bin/cabal

You will need to manually remove the pre-existing 1.16 links in ~/Library/Haskell/bin before installing again.