XCode 15 Beta 5 Introducing Unknown Build Error: External macro implementation type cannot be found

Feedback Report: FB12758649

Build Error Message: External macro implementation type 'ObservationMacros.ObservableMacro' could not be found for macro 'Observable'

Introduced on upgrading from xCode 15 beta 4 to xCode beta 5.

Only an issue for iOS (macOS builds and runs correctly)

import CloudKit
import Observation

@Observable class AggregateModel {
... 
}

According to this thread, the solution is to check wether the path to Xcode contains a space.

https://developer.apple.com/forums/thread/734638

Yes that fixed the issue, thank you!

XCode 15 Beta 5 Introducing Unknown Build Error: External macro implementation type cannot be found
 
 
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