XCFramework archive - No such module on import AppAuth / AppAuthCore

We are building our SDK via xcodebuild archive and we have a dependency on AppAuthCore (but have the same problem with AppAuth if we change the code a bit).
When adding our SPM, and doing a build with the import we get an error:
Failed to build module 'navenioSDK' for importation due to the errors above; the textual interface may be broken by project issues or a compiler bug
... Library/Developer/Xcode/DerivedData/Sample-ebyeebvxavhdtqcthbulfduyrttt/Build/Products/Debug-iphonesimulator/navenioSDK.framework/Modules/navenioSDK.swiftmodule/arm64-apple-ios-simulator.private.swiftinterface:5:8 No such module 'AppAuthCore'
We are adding AppAuth and AppAuthCore to the app as a package dependency using AppAuth-iOS, but it appears not to be found.
Doing the same for AWS (the first on the list in arm64-apple-ios-simulator.private.swiftinterface) resolved fine, so it appears to be an AppAuth specific issue.

• Device: iPhone 11 / Simulator
• OS: iOS 16 target build on iOS 17.x

Start by reproducing the xcodebuild archive and import using the AppAuthCore package dependency, then inspect the generated navenioSDK.swiftmodule/arm64-apple-ios-simulator.private.swiftinterface mentioned in the report. Compare the failing AppAuthCore import with the AWS import that resolves successfully; done means the archived SDK imports successfully without the No such module error.