No such module MetalKit

Hello, after downloading Xcode 7 GM, creating a new iOS 9 project or downloading existing examples, it is impossible to import MetalKit and make use of its members. Xcode simply says there is no such module, regardless if I manually add the framework to the project and link it, even setting the framework search path to the project recursively. I feel like this might be an Xcode bug specific to my machine, but I've already tried uninstalling and reinstalling Xcode 7 GM multiple times. MetalKit works fine on OSX targets.