I'm trying to do some work with MetalKit. I've created a brand new project based on the Game template with Metal selected as the game technology. For some reason, though, Xcode 7.3 won't recognize MetalKit as a valid module. At the top of
No such module 'MetalKit'
MetalKit isn't available as part of the iOS Simulator SDK. Building on an actual device and linking the iOS SDK should allow you to link the framework properly.