Support Kotlin 2.0

[andreas-eberle]

Description

Kotlin is preparing the 2.0 release. As of this writing, the Kotlin 2.0 RC3 is out (https://kotlinlang.org/docs/whatsnew-eap.html). Since Kotlin 2.0 brings some major changes under the hood (new compiler), I assume this might have implications for the Quarkus integrations. Therefore it probably is a good idea to start looking into what needs to be adapted.

I had a first glance and updated the libraries locally but noticed some problems. Unfortunately, I currently don't have the time to investigate it further myself and I'm not deep enough into the Quarkus internals yet.

Implementation ideas

No response

[quarkus-bot]

/cc @geoand (kotlin)

[geoand]

Do you by any chance have stacktraces of things that were failing?

[andreas-eberle]

I pushed the initial changes here https://github.com/andreas-eberle/quarkus/tree/feature/kotlin-2.0. But it only contains the version number increase.

At the moment, the buid fails when I run ./mvnw install -Dquickly -DskipTests -DskipITs.

The error is

javax.annotation.processing.Processor: Provider io.quarkus.panache.common.runtime.PanacheAnnotationProcessor not found

and happens when it tries to compile

[INFO] Quarkus - Hibernate Reactive with Panache - Common - Runtime FAILURE [  0.707 s]

[mschorsch]

Kotlin 2 was released https://kotlinlang.org/docs/whatsnew20.html, but the IDE support still seems to have alpha status.

[geoand]

@gastaldi just merged a PR that bumps to Kotlin 2.

[gastaldi]

Yeap, #40745. Closing this now

[mschorsch]

Thanks @gastaldi 👍