failures seem to be caused by:
gradle/kotlin-dsl-samples#163 (comment)

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Hi @bartekpacia is this something you're still pursuing?

Hey! Yes, I gotta fix the CI failures, didnt have much time recently

Hi,

Just letting you know there are some changes required for this to work: (changes need to be made on all versions)

    kotlinOptions {
        jvmTarget = JavaVersion.VERSION_11.toString()
    }

    sourceSets {
        getByName("main").java.srcDir("src/main/kotlin")
        getByName("test").java.srcDir("src/test/kotlin")
    }

    testOptions {
        unitTests.all {
            it.useJUnitPlatform()

            it.testLogging {
                events("passed", "skipped", "failed", "standardOut", "standardError")
                it.outputs.upToDateWhen { false }
                showStandardStreams = true
            }
        }
    }

I can't get to import on Gradle sync com.android.library without adding the following to settings.gradle.kts:

pluginManagement {
    repositories {
        google()
        mavenCentral()
        gradlePluginPortal()
    }
}

and replacing

plugins {
    id("com.android.library") version "{{agpVersion}}"
    id("org.jetbrains.kotlin.android") version "{{kotlinVersion}}"
}

This one could be an issue on my part, I'm not sure (Gradle doesn't want to fetch the plugins from Maven repos if they are not defined in pluginManagement in settings.gradle.kts)