Compile Error Running 'python3 build.py' for Apple.GameKit

[jamesmcadamPSH]

When compiling the tgz as part of the Quick Start Guide for iOS and MacOS an error was being thrown for the Apple.GameKit.

Environment
Python Version: 3.14.3
Native library build using: Xcode 26.4 (17E192)
Unity Version: 2022.3.62f2

Error

../plug-ins/Apple.GameKit/Native/GameKitWrapper/GKGameActivityDelegate.swift:25:17: error: protocol 'GKGameActivityListener' requires 'player(_:wantsToPlay:completionHandler:)' to be available in iOS 13.0 and newer public func player(_ player: GKPlayer, wantsToPlay activity: GKGameActivity, completionHandler completion: @escaping WantsToPlayActivityCompletionHandler) {

GameKit.GKGameActivityListener.player:2:15: note: protocol requirement here optional func player(_ player: GKPlayer, wantsToPlay activity: GKGameActivity, completionHandler: @escaping @Sendable (Bool) -> Void)}

Potential Fix / Comments

I have no experience with swift but looking at the compile issue I made the following change and it was able to compile which has unblocked for the initial testing of my current task.

My understanding here is that GKGameActivityListener is a protocol which is similar in concept to an interface which requires certain functionality to be implemented. The @available is similar to like a define in unity for specific versions for example UNITY_2021_3_OR_NEWER.

So when compiling these scripts targeting iOS 13.0 the function was essentially being stripped. However the interface requires the function. Moving the @available attribute to cover the whole GKWLocalPlayerListener means the interface is not expected anymore and hence it allows to be compiled for the iOS version.

While this allows compilation I have not sure if this is the correct fix or if there are other implications to this. Running on a test device I was at least able to log into game kit so I can continue with my setup / testing for now.

Any assistance would be greatly appreciated. Many thanks.