Xcode 9: Swift dependency analysis error

Question

I have an iOS-app written in obj-C and UI-tests for the app in Swift. I recently installed Xcode 9 beta 2 and wanted to compile the app. I get the following error:

<

Answer 1

It tells that you need to specify the swift version in Build Settings. Just click project and go to Build settings (not the target) and set "Swift Language Version" to Swift 3.2 or Swift 4. Here you have an screenshot :)