OS build fails on Xcode 16.4/16.5 (Swift 6.2) — ComplyCubeMobileSDK compiled with Swift 6.1 & Unable to find module dependency: 'Segment'

[ievitchenko]

On iOS the project fails to compile with Xcode 16.4/16.5 (Swift 6.2) with React Native 0.81.0.
The prebuilt ComplyCubeMobileSDK.xcframework is compiled with Swift 6.1, so the Swift module is not accepted by the 6.2 compiler.

Android builds & runs fine (but only after patching the RN package - adding fix in ComplyCubeModule.kt - the module fails when relying on currentActivity in some RN setups.

Unresolved reference 'currentActivity'
None of the following candidates is applicable: constructor Intent(...)
Unresolved reference 'startActivity'

Applied fix is to start the SDK activity via the application context and FLAG_ACTIVITY_NEW_TASK).

Error

/node_modules/@complycube/react-native/ios/CCView.swift:2:8
Failed to build module 'ComplyCubeMobileSDK';
this SDK is not supported by the compiler
(the SDK is built with 'Apple Swift version 6.1 effective-5.10 (swiftlang-6.1.0.110.21 clang-1700.0.13.3)',
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.

Environment

Xcode: 16.4 / 16.5 (Swift 6.2)

macOS: 15

React Native: 0.81.0

@complycube/react-native: 1.1.5

ComplyCubeMobileSDK: 1.3.12 (pulled by the RN package)

iOS Deployment Target: 15.1

CocoaPods: 1.15.2

Minimal repro steps

npx react-native init Test --version 0.81.0

npm i @complycube/react-native@1.1.5

Complete steps from Mobile SDK integration guide or try to use settings from example repo

cd ios && pod install --repo-update

Open Test.xcworkspace in Xcode 16.4/16.5, build the iOS app → see error above.

Note: If SWIFT_ENABLE_EXPLICIT_MODULES=NO is set for complycube-react-native / ComplyCubeMobileSDK pods, the build can proceed a bit further, but it still fails on the Swift 6.1 vs 6.2 mismatch when the module is validated.

What I tried / Workarounds

Matching the example project setup (use_frameworks! :linkage => :static, RN pods, CocoaPods 1.15.x).

Disabling Explicit Module Builds only for ComplyCube pods:

SWIFT_ENABLE_EXPLICIT_MODULES = NO
SWIFT_COMPILATION_MODE = wholemodule
SWIFT_USE_INTEGRATED_DRIVER = NO

Full clean of DerivedData/Pods, repo update, etc.

These tweaks can avoid earlier module-graph errors (like Unable to find module dependency: 'Segment'), but they do not fix the fundamental 6.1 vs 6.2 toolchain incompatibility of the prebuilt xcframework.

Can you please provide a temporary/recommended configuration/workaround to build successfully on Xcode 16.4/16.5 (Swift 6.2) and React Native 0.81.0?

Thanks!