So I got back from a week away from the computer, and Julia's suddenly not working on my Mac (it's mainly due to Cairo.jl, I think), and when I try to rebuild it it appears to be that my version of Xcode is out of date:
Error: Your Xcode (8.0) is outdated. Please update to Xcode 8.1 (or delete it). Xcode can be updated from the App Store. Which is fine.... But, Xcode 8.1 was released on Thursday 27th (related to this week's Apple Event I suppose). That's only a couple of days ago! I like the responsiveness (I think) and we're all used to living on the bleeding edge, but it's still surprising that this happened so quickly, and that there's no notice or anything anywhere, that I could see, that Julia installations would be broken immediately they released a new version of Xcode. Was I the only one affected !?