Hi, I've encountered a weird error while upgrading...

# multiplatform

[yshrsmz]

Hi, I've encountered a weird error while upgrading my KMP library to Kotlin 1.3.71.

My lib consists of two modules, one is core KMP lib, and the other is a Gradle plugin. When I try to execute test cases for the Gradle plugin, one of these throws an error like

e: Could not find "kotlinx-serialization-runtime" in [/Users/yshrsmz/repos/github.com/yshrsmz/kgql, /Users/yshrsmz/.konan/klib, /Users/a12897/.konan/kotlin-native-macos-1.3.71/klib/common, /Users/yshrsmz/.konan/kotlin-native-macos-1.3.71/klib/platform/ios_x64].

Here's the repo
https://github.com/yshrsmz/kgql/tree/kotlin1.3.71-builderror

If you run $ ./gradlew build at the root directory, The generate task is a dependency of multiplatform ios target - X64 test fails.
https://github.com/yshrsmz/kgql/blob/kotlin1.3.71-builderror/kgql-gradle-plugin/src/test/kotlin/com/codingfeline/kgql/gradle/KgqlPluginTest.kt#L166-L181

The weirdest part is, this test some time passes. It fails almost all the time, but sometimes it succeeds.

[ilya.matveev]

Hi! Your problem relates to compler caches. I'm still digging into it but as a workaround you may disable them. Here is the patch:

Untitled

[yshrsmz]

@orangy Thanks! this seems to solve the problem for now(actually I'm not sure if this is really fixed or it is fortunately succeeding several times in row)

[ilya.matveev]

@yshrsmz I have an update regarding your problem. The test failure is caused by dependencies of kgql-core. For some reason dependencies added to the nativeMain source set were not written to metadata for the published kgql-core artifact. So the cache builder cannot compile caches due to the missing dependencies.

This behaviour is observed only when the nativeMain source set is added to compilations using the source method. If you specify a dependsOn relation between platform source sets and nativeMain instead of using the source method, the dependencies become correct and the cache builder works fine. Please note that using the dependsOn relation is the recommended way to configure a source set hierarchy.

So, the patch attached should fix your problem. After that you may enable the caching back.

Untitled

[yshrsmz]

@orangy Thank you so much!
I can confirm that kotlinx-serialization-runtime-native does not exist in dependencies when I use source, and exists when I use dependsOn.

Out of curiosity, is this something that will be fixed?

[ilya.matveev]

Yes, it should be fixed. We don't know the exact root cause yet, so I'm going minimize this sample and investigate this problem deeper. But probably not in the near future.

BTW, @orangy is another guy, let's not disturb him 🙂 My nickname is @ilya.matveev.

[yshrsmz]

woops, sorry