"Install" button disabled for Haskell GHC installer on my Mac. Please help, nothing works

I was hoping Haskell would be the first programming language I would learn, but I can't even get to square 1: when I run the GHC..pkg, the "install button" is greyed out. I tried asking at the Haskell irc, but I'm always asked whethe开发者_如何学编程r I have Xcode installed. I have Xcode 3.2.4 installed on my computer, so there should be no problem, as it's up to date with the latest GHC package.

I'm completely stuck, any help is appreciated.

Is this on the step where you choose the install location? I think you need to click on the drive (even if there's only one) before you can press the install button.

I know you already solved your problem, but maybe this is useful for someone else.

If you already have Xcode you could install Homebrew, a package manager for OSX:

https://github.com/mxcl/homebrew

Once you have that, Haskell is just a

brew install haskell-platform

away.