This now means that hook blocks _can_ expect a second argument. So the [comment / module description at the top of the file](https://github.com/CocoaPods/CocoaPods/blob/cd9a2b82b5666f974f16a258db71246f4698100f/lib/cocoapods/hooks_manager.rb#L8-L12) is to be fixed accordingly, as the promise it talks about is already broken ;)