"Unresolved reference: KotlinLogging" after upgrading from 1.12.0 to 1.12.1

[breun]

After upgrading kotlin-logging from 1.12.0 to 1.12.1 compilation fails, because mu.KotlinLogging can no longer be resolved.

https://github.com/breun/kotlin-logging-1.12.1-import-issue works ok with kotlin-logging 1.12.0 when I run ./mvnw clean compile. However, when I upgrade kotlin-logging to 1.12.1 in pom.xml and run ./mvnw clean compile again, I get this error:

[INFO] --- kotlin-maven-plugin:1.4.31:compile (compile) @ kotlin-tryout ---
[ERROR] /Users/breun/Projects/kotlin-tryout/src/main/kotlin/nl/breun/Tryout.kt: (3, 11) Unresolved reference: KotlinLogging
[ERROR] /Users/breun/Projects/kotlin-tryout/src/main/kotlin/nl/breun/Tryout.kt: (5, 22) Unresolved reference: KotlinLogging

[jwesselink]

I've got the same error, build is failing after upgrading from 1.12.0 to 1.12.1

[oshai]

Thanks for reporting, I am checking it.

[oshai]

Looks like it was caused by upgrading kotlin version from 1.4.10->1.4.31.
I reverted it, and it is fixed in version 1.12.5.

[breun]

How exactly did a Kotlin upgrade break the ability to import kotlin-logging classes?

I also thought kotlin-logging 2.x was the version that required Kotlin 1.4. Is kotlin-logging 1.12.x still compatible with Kotlin 1.3?

[oshai]

Is kotlin-logging 1.12.x still compatible with Kotlin 1.3?

Yes. 1.x supports Kotlin version >= 1.2.
It is compiled with Kotlin 1.4 but has:

kotlinOptions {
                apiVersion = "1.2"
                languageVersion = "1.2"
 }

I don't know the exact issue, but since we are using multiplatform features and this is in alpha state, it is breaking stuff even in minor versions change of Kotlin. Version 2.x changed the build to be more standard for that reason.

[oshai]

@breun can you verify that the issue was resolved?

[breun]

@oshai Yes, with 1.12.5 it works again.