Protobuf Gradle Plugin + Kotlin DSL

build.gradle.kts

import com.google.protobuf.gradle.protobuf
import com.google.protobuf.gradle.protoc

plugins {
    java
    idea
    id("com.google.protobuf") version "0.8.7"
}

repositories {
    mavenCentral()
}

val protobufVersion = "3.6.1"

dependencies {
    compile("com.google.protobuf:protobuf-java:$protobufVersion")

    if (JavaVersion.current().isJava9Compatible) {
        implementation("javax.annotation:javax.annotation-api:+")
    }
}

protobuf {
    protoc {
        artifact = "com.google.protobuf:protoc:$protobufVersion"
    }
}