"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.

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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.

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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.