Using GitHub Packages with Groovy Grapes for scripting

Hello,

Does anyone have any experience importing GitHub packages as dependencies
using Groovy Grapes?

I have followed the tutorials for the Gradle build tool, and successfully
published a package, and then used it as a dependency in a separate
project. I am struggling to understand if it is even possible to pull the
dependency using Groovy Grapes in a script.

In the Gradle examples it seems you need to provide the github user and a
token, as well as defining a repository pointing to the GitHub repo. I am
not sure how the same might be accomplished within a groovy script using
@Grab.

Thank you,
Mike Stockman