Deploying custom artifact with POM dependencies using Gradle 'maven-publish'

build.gradle

File pluginZip = project.file("grails-${project.name}-${version}.zip")
assemble.outputs.file pluginZip

project.components.add(new JavaLibrary(
        new org.gradle.api.internal.artifacts.publish.DefaultPublishArtifact(
                project.name,
                'zip',
                'zip',
                '',
                new Date(pluginZip.lastModified()),
                pluginZip,
                assemble
        ),
        project.configurations.runtime.allDependencies) {
    @Override
    public String getName() {
        return "grailsPlugin";
    }
})

publishing {
    publications {
        artifact(MavenPublication) {
            from components.grailsPlugin
        }
    }
}