springboot Provide a way to customize layers with the Gradle plugin

Comment From: wilkinsona

There's no easy and reliable way for us to map from BootJar's classpath (a FileCollection) to Maven coordinates. There's no guarantee that every jar on the classpath has come from a Maven repository and even for those that have, there's no guaranteed link between the FileCollection that represents the classpath and the Configuration(s) (from which we could get a dependency graph) that populated it.

The above is the same problem as we had with requires unpack which is why it's configured using a Spec<FileTreeElement> which is passed the FileCopyDetails for each jar file that's been added to the jar. I think we'll have to do something similar for layer customization with Gradle.