Loom doesn't set configuration roles

[Juuxel]

From the Gradle docs:

In short, a configuration’s role is determined by the canBeResolved and canBeConsumed flag combinations: [table not included] For backwards compatibility, both flags have a default value of true, but as a plugin author, you should always determine the right values for those flags, or you might accidentally introduce resolution errors.

This is very easy to add but is a bit tedious.