homebrew を最新版にする $ brew update 元々入っていたので upgrade したが、通常は install $ brew upgrade haskell-platform ==> Upgrading 1 outdated package, with result: haskell-platform 2013.2.0.0 ==> Upgrading haskell-platform ==> Installing haskell-platform dependency: ghc ==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/ghc-7.6.3.lion.bottle.tar.gz ###################################################