In Kotlin Multiplatform it seems like hierarchical...

# multiplatform

[Mark Vogel]

In Kotlin Multiplatform it seems like hierarchical structure is supposed to be a feature. However, in order to use the commonMain module with any dependencies I must have the kotlin.internal.mpp.hierarchicalStructureByDefault=false flag specified in my gradle.properties file.

This issue on YouTrack claims that the problem is fixed with IntelliJ 2022.3 and Kotlin 1.7.20 (if I'm reading it correctly), but with those versions it still is not fixed. Does this happen to anyone else? Am I doing something wrong with my project?

Here is a more in-depth explanation of the issue

[Adam S]

I wonder if the application and kotlin("multiplatform") plugins aren’t playing nice together. Maybe IntelliJ isn’t correctly creating the module dependencies, so isn’t realising that jvmMain extends commonMain? Can you adding

implementation("org.jetbrains.kotlinx:kotlinx-serialization-json-jvm:${Versions.serialization}")

to jvmMain?

[Mark Vogel]

@Adam S sorry I missed this reply. To be clear, the issue is that no dependencies are resolved in the commonMain project if the flag is not present; the jvmMain does resolve the dependencies properly.

I tried removing the application plugin altogether and refreshed Gradle without the flag, but the same issue still occurs.

[Mark Vogel]

Is it not an issue for everyone when doing a multiplatform web project at the very least? It happens on every computer I've tried even using the Kotlin Example project.