Error using coroutines 1.6.0-RC2 in a KMM project

[niltsiar]

I was testing a KMM project with the new 1.6.0-RC2 version of coroutines and I got the following error while trying to execute the linkPodDebugFramework or linkPodReleaseFramework tasks. I know that version is not stable but just letting you know about the issue. It's happening with Arrow 1.0.1 and Arrow 1.0.2-SNAPSHOT

Module "io.arrow-kt:arrow-fx-coroutines" has a reference to symbol kotlinx.coroutines.flow/collect|7051880022478496626[0]. Neither the module itself nor its dependencies contain such declaration.

This could happen if the required dependency is missing in the project. Or if there is a dependency of "io.arrow-kt:arrow-fx-coroutines" that has a different version in the project than the version that "io.arrow-kt:arrow-fx-coroutines" was initially compiled with. Please check that the project configuration is correct and has consistent versions of all required dependencies.

The list of "io.arrow-kt:arrow-fx-coroutines" dependencies that may lead to conflicts:
 1. "io.arrow-kt:arrow-annotations" (a library with unknown version)
 2. "io.arrow-kt:arrow-continuations" (a library with unknown version)
 3. "io.arrow-kt:arrow-core" (a library with unknown version)
 4. "stdlib: 1.6.0" (was initially compiled with "stdlib: 1.5.31")
 5. "org.jetbrains.kotlin.native.platform.CoreFoundation: 1.6.0" (a dependency of the library with unknown version or versions mismatch: "org.jetbrains.kotlin.native.platform.CoreFoundation")
 6. "org.jetbrains.kotlin.native.platform.darwin: 1.6.0" (a dependency of the library with unknown version or versions mismatch: "org.jetbrains.kotlin.native.platform.darwin")
 7. "org.jetbrains.kotlin.native.platform.posix: 1.6.0" (was initially compiled with "org.jetbrains.kotlin.native.platform.posix: 1.5.31")
 8. "org.jetbrains.kotlinx:atomicfu" (a library with unknown version)
 9. "org.jetbrains.kotlinx:atomicfu-cinterop-interop" (a library with unknown version)
10. "org.jetbrains.kotlinx:kotlinx-coroutines-core" (a library with unknown version)

Project dependencies:
\--- io.arrow-kt:arrow-fx-coroutines
     ^^^ This module requires symbol kotlinx.coroutines.flow/collect|7051880022478496626[0].
     +--- io.arrow-kt:arrow-annotations
     |    \--- stdlib: 1.5.31 -> 1.6.0
     +--- io.arrow-kt:arrow-continuations
     |    \--- stdlib: 1.5.31 -> 1.6.0
     +--- io.arrow-kt:arrow-core
     |    +--- io.arrow-kt:arrow-annotations (*)
     |    +--- io.arrow-kt:arrow-continuations (*)
     |    \--- stdlib: 1.5.31 -> 1.6.0
     +--- stdlib: 1.5.31 -> 1.6.0
     +--- org.jetbrains.kotlin.native.platform.posix: 1.5.31 -> 1.6.0
     |    \--- stdlib: 1.6.0
     +--- org.jetbrains.kotlinx:atomicfu
     |    +--- stdlib: 1.6.0
     |    +--- org.jetbrains.kotlin.native.platform.posix: 1.6.0 (*)
     |    \--- org.jetbrains.kotlinx:atomicfu-cinterop-interop
     |         +--- stdlib: 1.6.0
     |         \--- org.jetbrains.kotlin.native.platform.posix: 1.6.0 (*)
     +--- org.jetbrains.kotlinx:atomicfu-cinterop-interop (*)
     \--- org.jetbrains.kotlinx:kotlinx-coroutines-core
          +--- stdlib: 1.6.0
          +--- org.jetbrains.kotlin.native.platform.CoreFoundation: 1.6.0
          |    +--- stdlib: 1.6.0
          |    +--- org.jetbrains.kotlin.native.platform.darwin: 1.6.0
          |    |    +--- stdlib: 1.6.0
          |    |    \--- org.jetbrains.kotlin.native.platform.posix: 1.6.0 (*)
          |    \--- org.jetbrains.kotlin.native.platform.posix: 1.6.0 (*)
          +--- org.jetbrains.kotlin.native.platform.darwin: 1.6.0 (*)
          +--- org.jetbrains.kotlin.native.platform.posix: 1.6.0 (*)
          +--- org.jetbrains.kotlinx:atomicfu (*)
          \--- org.jetbrains.kotlinx:atomicfu-cinterop-interop (*)

(*) - dependencies omitted (listed previously)

[nomisRev]

Thanks for the report @niltsiar. This will be useful to check if it's fixed before we release it.

Do you have a reproducible sample? I guess if you could share your Gradle config (plugins + dependencies + versions), then we should be easy to reproduce. This seems unrelated to any code used in the project itself.

[serras]

@niltsiar could you check again with the current SNAPSHOT? We have recently merged #2606, which adds support for the stable kotlinx-coroutines 1.6.0.

[niltsiar]

It seems at some point in the development of kotlinx.coroutines 1.6 the Flow.collect function was marked as @InternalCoroutinesApi which caused this issue when I tried 1.6.0-RC2. It has been solved in #3082 before releasing 1.6.0. I've tried again my project with the stable kotlinx.coroutines 1.6.0 and it builds properly with Arrow 1.0.1 and Arrow 1.0.2-SNAPSHOT. Sorry for creating some noise here.