ios - Module compiled with Swift 4.1.2 cannot be imported in Swift 4.1.50: Xcode 10 Error

Question

Swift 4.2 came out and I'm receiving this error message in my project when using ObjectMapper and some other pods too:

Module compiled with Swift 4.1.2 cannot be imported in Swift 4.1.50

So how do I tell Xcode to start updating my project and migrate it to Swift 4.2?

Answer 1

You are not compiling your Carthage module with the proper swift version. So you need to:

1. Make sure your terminal is pointing to your Xcode 10 Beta app and not your regular Xcode:

sudo xcode-select -switch Xcode_beta_10.app

2. Update your Carthage files:

carthage update --platform iOS --no-use-binaries

3. Go back to your project in Xcode, clean, build