Getting an error like: ```failed to build module '...

# multiplatform

[Stylianos Gakis]

Getting an error like:

failed to build module 'Shared'; this SDK is not supported by the compiler (the SDK is built with 'Apple Swift version 5.10 (swiftlang-5.10.0.13 clang-1500.3.9.4)', while this compiler is 'Apple Swift version 6.2 effective-5.10 (swiftlang-6.2.0.19.9 clang-1700.3.19.1)'). Please select a toolchain which matches the SDK.

When trying to build an iOS app which is now being built with Xcode 26.0.1. The main points of the error seem to be these:

... the SDK is built with 'Apple Swift version 5.10 ... while this compiler is 'Apple Swift version 6.2 effective-5.10

So there is a mismatch regarding how the Kotlin code was compiled and what the iOS app now expects.
Is this a case of me using the wrong combination of versions, or is this just a problem which I can only solve by waiting for a newer Kotlin version or by downgrading the iOS codebase?
Really out of my depth here so it could be something else completely tbh

[Horatio Thomas]

Are you versions all compatible here https://www.jetbrains.com/help/kotlin-multiplatform-dev/multiplatform-compatibility-guide.html#version-compatibility

[Stylianos Gakis]

There you have it. There is a little deadlock here with SKIE https://github.com/touchlab/SKIE/releases/tag/0.10.6 supporting only up to 2.2.10, which prevented me from going to 2.2.21.
At least now I know what's the issue, thanks a lot!