I could not log into Jira so I’m noting this in Forums instead.
Class com.opengamma.component.factory.engine.FunctionBlacklistComponentFactory (OG-Component) has a compile-time dependency on package org.testng.internal. This is probably inappropriate. Either way it breaks the Maven build.
The OG-Parent POM declares TestNG as an optional dependency, requiring sub-projects to specifically declare the dependency themselves which the POM for OG-Component fails to do.
Adding the dependency in OG-Component was straight-forward enough, but that in turn broke a “banned dependency” rule for Junit since it was being imported with compile-time scope instead of the allowed test scope.
Having relaxed the compile-time scope restriction on Junit the Maven project built fine. But the better solution is to remove the original compile-time dependency on TestNG.