#BlameGradle But we can't mix and match artifacts from mavenizer repo, and public repos. As Gradle forces ALL classifiers to come from a single repo. This is the same issue where unless users have Mojang's repo before maven central they can't find Mojang's custom patched lwjgl files.
I don't think its possible to do this generically on any maven, but for things from the Forge repo I expose a json file listing all the classifiers.