Maven? Ugh, and here I thought you were cool!

What are you trying to do? I assume build the sources and publish the artifacts? If so, the Gradle build has a task to publish the artifacts (jars) to your local Maven repo. Run gradlew publishToMavenLocal. Your Maven projects can pick them up from there. Or just use 4.3.1-SNAPSHOT which will pull in the artifacts built by our CI job.