Hi :slightly_smiling_face: we’re running into a bu...

# touchlab-tools

[Benjamin Sejdic]

Hi 🙂 we’re running into a build issue with coroutinesInterop enabled using the SKIE library.

Error message: Compilation failed: The /Applications/Xcode-16.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc command returned non-zero exit code: 1.

This error only occurs when we set coroutinesInterop to true and happens specifically during the kotlin framework compilation, in the linking step. We’re new to SKIE and trying out coroutinesInterop, but haven’t been able to get it working yet. We initially stared with the enums feature and it works without issues.

Versions:
* SKIE Version: 0.9.3
* Kotlin Version: 2.0.20
* Xcode Version: 16.0

Gradle Setup:

skie {
    features {
        group("co.touchlab.skie.types") {
            SealedInterop.Enabled(true)
            coroutinesInterop.set(true)
            SuspendInterop.Enabled(true)
            FunctionInterop.FileScopeConversion.Enabled(false)
        }
    }
}

We’ve also posted this on github (https://github.com/touchlab/SKIE/issues/118) but wanted to ask here in case anyone has tips or has run into similar issue. Any advice or workarounds would be greatly appreciated. Thanks!

[Tadeas Kriz]

Hi, could you run the task with --info and share more of the swiftc error? You should also be able to navigate to build/skie/binaries/debugFramework/DEBUG/iosSimulatorArm64/debug/logs and there should be swiftc.log file which should contain more details. Please share those so we can see what the error is

[ade]

Kotlin 2.0.20 doesn't support Xcode 16. But 2.0.21 does

[David Everlöf]

I work on the same project as @Benjamin Sejdic, here's some more context:

error: Compilation failed: The /Applications/Xcode-16.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc command returned non-zero exit code: 1.
output:
/Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift/generated/Watch/Watch.WatchManager.swift:17:19: error: value of type 'Watch' has no member '__SkieSuspendWrappersKt'
15 |     public func doInitWatch(watch: watch.Watch) async throws -> Swift.Void {
16 |         return try await SwiftCoroutineDispatcher.dispatch {
17 |             watch.__SkieSuspendWrappersKt.Skie_Suspend__231__initWatch(dispatchReceiver: self, watch: watch, suspendHandler: $0)
                   `- error: value of type 'Watch' has no member '__SkieSuspendWrappersKt'
18 |         }
19 |     }

 * Source files: 
 * Compiler version: 2.0.21
 * Output kind: FRAMEWORK

swiftc.log

[Tadeas Kriz]

Thanks. If you try setting FunctionInterop.FileScopeConversion.Enabled(false) to true instead, does it compile?

[David Everlöf]

That actually just increased the errors 😕

[David Everlöf]

$ diff /Users/david/Downloads/swiftc.log  /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/debug/logs/swiftc.log 
49a50,69
> /Applications/Xcode-16.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name watch -import-underlying-module -F /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/cache/kotlin-framework -F /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift-compiler/fake-objc-frameworks -verify-emitted-module-interface -emit-module -emit-module-path /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift-compiler/headers/watch.swiftmodule -emit-objc-header -emit-objc-header-path /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift-compiler/headers/watch-Swift.h -emit-object -parse-as-library -enable-batch-mode -Onone -incremental -output-file-map /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift-compiler/config/OutputFileMap.json -g -module-cache-path /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/cache/swift-module-cache -swift-version 5 -j9 -sdk /Applications/Xcode-16.0.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.0.sdk -target arm64-apple-ios15.0  @/Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift-compiler/config/watch.SwiftFileList
> 
> 
> /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift/generated/Watch/Watch.WatchManager.swift:17:19: error: value of type 'Watch' has no member '__SkieSuspendWrappersKt'
> 15 |     public func doInitWatch(watch: watch.Watch) async throws -> Swift.Void {
> 16 |         return try await SwiftCoroutineDispatcher.dispatch {
> 17 |             watch.__SkieSuspendWrappersKt.Skie_Suspend__231__initWatch(dispatchReceiver: self, watch: watch, suspendHandler: $0)
>    |                   `- error: value of type 'Watch' has no member '__SkieSuspendWrappersKt'
> 18 |         }
> 19 |     }
> /Applications/Xcode-16.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name watch -import-underlying-module -F /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/cache/kotlin-framework -F /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift-compiler/fake-objc-frameworks -verify-emitted-module-interface -emit-module -emit-module-path /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift-compiler/headers/watch.swiftmodule -emit-objc-header -emit-objc-header-path /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift-compiler/headers/watch-Swift.h -emit-object -parse-as-library -enable-batch-mode -Onone -incremental -output-file-map /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift-compiler/config/OutputFileMap.json -g -module-cache-path /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/cache/swift-module-cache -swift-version 5 -j9 -sdk /Applications/Xcode-16.0.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.0.sdk -target arm64-apple-ios15.0  @/Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift-compiler/config/watch.SwiftFileList
> 
> 
> /Users/david/fest/mobilewatchapps/Android/watch/build/skie/binaries/debugFramework/DEBUG/iosArm64/swift/generated/Watch/Watch.WatchManager.swift:17:19: error: value of type 'Watch' has no member '__SkieSuspendWrappersKt'
> 15 |     public func doInitWatch(watch: watch.Watch) async throws -> Swift.Void {
> 16 |         return try await SwiftCoroutineDispatcher.dispatch {
> 17 |             watch.__SkieSuspendWrappersKt.Skie_Suspend__231__initWatch(dispatchReceiver: self, watch: watch, suspendHandler: $0)
>    |                   `- error: value of type 'Watch' has no member '__SkieSuspendWrappersKt'
> 18 |         }
> 19 |     }

[Tadeas Kriz]

Last thing, could you try removing the whole features block:

features {
        group("co.touchlab.skie.types") {
            SealedInterop.Enabled(true)
            coroutinesInterop.set(true)
            SuspendInterop.Enabled(true)
            FunctionInterop.FileScopeConversion.Enabled(false)
        }
    }

[Tadeas Kriz]

That should run SKIE in the default mode

[Tadeas Kriz]

Also why are you using co.touchlab.skie.types package?

[David Everlöf]

Probably just grabbed the wrong snippet, I'll try with just group

[Tadeas Kriz]

try without configuring it first, that'll give us a baseline

[David Everlöf]

Should I keep an empty skie?

skie { }

[Tadeas Kriz]

Yeah that's fine

[Tadeas Kriz]

Also coroutinesInterop should be outside of any group as it's for features block. We should probably add DSL annotations

[David Everlöf]

Ok, so now I got even more errors, but still kinda the same type, from __SkieSuspendWrappersKt

[David Everlöf]

swiftc.log

swiftc.log

[Tadeas Kriz]

Is your framwork called Watch with a Watch class in it by any chance?

[David Everlöf]

yeah, that would be the case

[Tadeas Kriz]

That's weird, SKIE should be printing a warning in the Gradle log about it and rename Watch to Watch_ (it's a limitation of Swift)

[Tadeas Kriz]

Oh I see what's happening in your case

[Tadeas Kriz]

Your framework is watch and the class is Watch which is fine, but the parameter to doInitWatch is watch and therefore it conflicts

[Tadeas Kriz]

That's an interesting bug and should be straightforward to fix

[David Everlöf]

ahh, yeah right

[David Everlöf]

the argument collides with the framework name?

[Tadeas Kriz]

Yup

[Tadeas Kriz]

Because Swift prefers argument name when resolving and SKIE needs to access everything using the framework name

[Tadeas Kriz]

We'll need to add a check for any Swift we generate that when it has a parameter and if that parameter is called the same as the framework, we need to add a label and rename the parameter. So in this case it should generate public func doInitWatch(watch watch_: watch.Watch)

[David Everlöf]

yeah, sounds like a good idea!

[Tadeas Kriz]

In the meantime, you can disable suspend interop for that class that's failing (or rename either the framework to something like WatchKit or the parameter)