tasks.withType<GroovyCompile>().configureEach {
        groovyOptions.encoding = "utf-8"
        sourceCompatibility = "1.8"
        targetCompatibility = "1.8"
        configureCompileTask(options)
    }
    addCompileAllTask()
}

fun configureSourcesVariant() {
    java {
        withSourcesJar()
    }

    @Suppress("unused_variable")
    val transitiveSourcesElements by configurations.creating {