This change <https://github.com/JetBrains/kotlin/commit/5ce514bd42a8e8cb2afac99ea20bc359a4222951> in...

# gradle

[sdeleuze]

This change https://github.com/JetBrains/kotlin/commit/5ce514bd42a8e8cb2afac99ea20bc359a4222951 introduces a regression that prevent us to generate the Dokka documentation for Kotlin code without using Java code since we were using sourceDirs = files(subprojects.collect { project -> project.sourceSets.main.kotlin.srcDirs }). What can I use to get only the Kotlin source dirs ?

[h0tk3y]

Sorry for that. What affects your build, though, is only that now the Java directories are added to the Kotlin directory set eagerly during configuration, not afterEvaluate { ... } as it was before.
I would suggest the following workaround:

sourceDirs = files(subprojects.collect { project -> project.sourceSets.main.kotlin.srcDirs - project.sourceSets.main.java.srcDirs })