sourceSets.getByName("main").apply {
        val hasConvention = this as HasConvention
        val plugin = hasConvention.convention.getPlugin<KotlinSourceSet>()
        plugin.kotlin.srcDir("src")

        resources.srcDir("resources")
        allSource.srcDir("src")
    }

HasConvention

classpath(”org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion”)

import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSet

buildscript {
    repositories {
        mavenCentral()
        maven { setUrl("<http://dl.bintray.com/kotlin/kotlin-eap-1.1>") }
    }
    dependencies {
        classpath(kotlinModule("gradle-plugin", extra["kotlinVersion"] as String))
    }
}

buildscript

buildSrc