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Compilation error with Xcode 26 beta 1

  • June 9, 2025
  • 8 replies
  • 924 views
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I am trying to build my app with Xcode 26 beta 1. RevenueCat is generating errors:

For many functions, I’m getting this error.

“Concurrency is only available in iOS 13.0.0 or newer”

 

Here is an example of the code in Obsoletions.

    func paymentDiscount(for discount: SKProductDiscount,

                         product: SKProduct) async throws -> SKPaymentDiscount {

        fatalError()

    }

 

I am using RevenueCat 4.43.3

Is there a way I can avoid these errors - I am not ready to move to RC 5.x yet.

My code supports iOS 16 or later.

    E
    T
    This post has been closed for comments

    8 replies

    G
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    Also happens with the latest 4.x (4.43.6)

    G
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    I have problems with the latest 5.x SDK as well.

    E
    • Ebex
    • New Member
    • June 10, 2025

    Same here. v4.41.1.

    J
    • j-d485ba
    • New Member
    • June 10, 2025

    Same here (4.43.4)

    Maybe we’ll need an SDK version that drops pre iOS 13 support?

    https://github.com/swiftlang/swift/blob/2950c38a5d4f1f028d3786a278ae61eaf501f0d0/stdlib/public/Concurrency/CMakeLists.txt#L99

    D
    • dualakkimbo
    • New Member
    • June 11, 2025

    sdk version 5.28.0 has been released yesterday which resolve this issue. 

    Related - https://github.com/RevenueCat/purchases-ios/issues/5255

     

     

    G
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    Can we get a fix for 4.x? I’m not ready to move to 5.x yet.

    T
    antonio.pallares
    RevenueCat Staff
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    Hi! Antonio here, from the RevenueCat’s CoreSDK team. Thank you for the report! Let’s try to pinpoint the cause of this so that we can work on a fix.

    I’ve tried to reproduce the compilation errors using Xcode 26 Beta 1 and I wasn’t able so far. I’ve created some sample projects from scratch using purchases-ios v4.43.6 and I could build them properly. I tried these combinations:

    • Set the minimum deployment version to iOS 16
    • Built and ran in multiple iOS simulators (including iOS 26, iOS 18 and iOS 16)
    • In Build Settings, set Swift Language Version to Swift 5 and also to Swift 6
    • Added RevenueCat with Swift Package Manager and also with Cocoapods

    and I didn’t encounter the build error mentioned in this thread.

    Could you share more details about when the issue happens?

    • What version of macOS are you using?
    • What are your build settings?
    • If you’re using Cocoapods, could you share the relevant sections of the Podfile?
    • Ideally, it would be extremely helpful if you could share a Sample project where the issue is reproducible.

    Happy to take a look once we have that info!

    D
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    • dlau
    • New Member
    • June 25, 2025

    Thanks Antonio for looking into the issue for SDK v4. I am encountering this issue myself on a legacy XCode project with base deployment of 15.0. However, when I try to recreate the issue from a fresh XCode project, the issue does not appear. 🤷

     

    I have “fixed” the issue by forking Package.swift to have a minimum iOS version support of 13.0.

    There may be unintended new checks with XCode 26 with Concurrency support, and the original minimum iOS 11.0 may no longer be allowed.

    joan-cardona
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