mxcl/homebrew — comment on commit 8e88b22fd1ec65a344ce6e4facd6dad4b415b2ad
File:  line 0
By durrantm:

Well my brand new mac air purchased 10/2/2011 needed xcode and I was stuck until I showed it to Kevin Bedell and he knew that and then I installed xcode, the error went away and I was able to continue.