ios – App with min. deployment iOS16 crashes due to SwiftData

July 28, 2024

1

I’ve an app on the AppStore that targets iOS 16 and later.
I want to introduce help for SwiftData for units working iOS 17 and later, whereas sustaining help for iOS 16.

Instance code:

import Basis
import SwiftData

@obtainable(iOS 17, *)
@Mannequin
class Individual {
    var firstName: String
    var lastName: String
    
    init(firstName: String, lastName: String) {
        self.firstName = firstName
        self.lastName = lastName
    }
}

The app crashes due to @Mannequin with the next error:

dyld[5910]: Library not loaded: /System/Library/Frameworks/SwiftData.framework/SwiftData

If I remark out @Mannequin the app runs with no errors.

I can not drop help for iOS 16, however I would like to make use of SwiftData (not CoreData) and restrict the performance to iOS 17 units.

The under doesn’t work:

#if canImport(SwiftData)
import SwiftData
#endif

I might’ve thought that at runtime when it reads “@obtainable(iOS 17, *)” that it might not proceed to what’s after it because it’s working on iOS 16.

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