Resolves fine for me when omitting ‘@jar’ (Gradle 2.0). Had to add a repository (“http://repository.jboss.org/nexus/content/groups/public”) that contains the transitive dependency “org.jboss.dashboard-builder:dashboard-builder-bom:6.1.0.Final”. Otherwise, resolution would fail with a misleading top-level error message (“Could not parse POM http://repo1.maven.org/maven2/org/kie/kie-api/6.1.0.Final/kie-api-6.1.0.Final.pom”).
Raised GRADLE-3160 for the misleading error message.