Hi, any idea why <https://kotlinlang.org/api/core/...

# kotlin-toolchain

[suresh]

Hi, any idea why https://kotlinlang.org/api/core/kotlin-stdlib/kotlin.io.path/, AutoCloseable extension functions are not available on jvm/app or jvm/lib modules? Compilation fails.

[suresh]

I think this used to be in stdlib-jdk7 and jdk8 modules.

[suresh]

Same for src@jvm sourceset in a shared multiplatform module.

[Anton Prokhorov]

hi there, what do you mean by aren't available?
where? in the IDE? which version?
which Amper version?
if they aren't available, it's a bug

this is a part of kotlin-stdlib now and using stdlib-jdk7 and jdk8 modules aren't necessary, in the current versions which are aligned with Kotlin versions, they're empty

[Anton Prokhorov]

Compilation fails.

and what about IDE? are they resolved?

[suresh]

Sorry for the confusion. It compiles fine. The error is in the IDE.
The issue happens in the IDE (IntelliJ IDEA 2025.3 EAP) when you add multiple platforms.

product:
  type: lib
  platforms: [ jvm, linuxArm64, linuxX64, macosX64, macosArm64, mingwX64 ]

Here’s one of the src@jvm files. When you only have the jvm platform, things work fine. But with multiple platforms, the IDE throws an error.

[suresh]

Using the latest dev version

$ ./amper --version
JetBrains Amper version 0.9.0-dev-3445 (e76cd3e, 2025-11-17)

[suresh]

created a YT issue to track it - https://youtrack.jetbrains.com/issue/AMPER-4885

[Anton Prokhorov]

Thanks for the ticket, @suresh, I've reproduced the issue, in Gradle it works