It seems that @Model is not fully supported in visionOS. I've tried both an iPad app and a native visionOS app, and both crash when trying to use SwiftData. It's a minimal app from the template (no data) that I add a little data code to:
import SwiftData
@Model
final class mapPin {
var lat : Double
var lon : Double
init(lat: Double, lon: Double) {
self.lat = lat
self.lon = lon
}
}
Building for visionOS produces:
/var/folders/9p/ppkjrfhs393__cqm9z57k9mr0000gn/T/swift-generated-sources/@__swiftmacro_7Vision16mapPin5ModelfMm_.swift:2:13: error: declaration name '_$backingData' is not covered by macro 'Model'
private var _$backingData: any SwiftData.BackingData<mapPin> = SwiftData.DefaultBackingData(for: mapPin.self)
^
/Users/arenberg/Developer/Beta/Vision1/Vision1/ContentView.swift:13:7: note: in expansion of macro 'Model' here
final class mapPin {
^~~~~~~~~~~~~~
/var/folders/9p/ppkjrfhs393__cqm9z57k9mr0000gn/T/swift-generated-sources/@__swiftmacro_7Vision16mapPin5ModelfMc_.swift:1:1: error: type 'mapPin' does not conform to protocol 'PersistentModel'
extension mapPin : SwiftData.PersistentModel {}
^
/Users/arenberg/Developer/Beta/Vision1/Vision1/ContentView.swift:13:7: note: in expansion of macro 'Model' here
final class mapPin {
^~~~~~~~~~~~~~
/var/folders/9p/ppkjrfhs393__cqm9z57k9mr0000gn/T/swift-generated-sources/@__swiftmacro_7Vision16mapPin5ModelfMc_.swift:1:1: note: do you want to add protocol stubs?
extension mapPin : SwiftData.PersistentModel {}
^
/Users/arenberg/Developer/Beta/Vision1/Vision1/ContentView.swift:13:7: note: in expansion of macro 'Model' here
final class mapPin {
^~~~~~~~~~~~~~
/var/folders/9p/ppkjrfhs393__cqm9z57k9mr0000gn/T/swift-generated-sources/@__swiftmacro_7Vision16mapPin5ModelfMm_.swift:2:64: error: module 'SwiftData' has no member named 'DefaultBackingData'
private var _$backingData: any SwiftData.BackingData<mapPin> = SwiftData.DefaultBackingData(for: mapPin.self)
^~~~~~~~~ ~~~~~~~~~~~~~~~~~~
/Users/arenberg/Developer/Beta/Vision1/Vision1/ContentView.swift:13:7: note: in expansion of macro 'Model' here
final class mapPin {
^~~~~~~~~~~~~~```
