Java 11 Module: reads package 'io.protostuff' from both 'protostuff.api' and 'protostuff.core'

I am using Java 11 and protostuff, here is the module-info.java:

module nettyrpc.server {
    requires nettyrpc.common;
    requires io.netty.all;
    requires org.apache.logging.log4j;
    requires gson;
    requires protostuff.runtime;
    requires protostuff.api;
    requires protostuff.core;
}

Get the error: Module 'nettyrpc.server' reads package 'io.protostuff' from both 'protostuff.api' and 'protostuff.core'

[mikaelgrev]

Hello, any news on this? It is as far as I understand a requirement for including protostuff in a module enabled project.

[ChrisTrenkamp]

It’s not just protostuff.api and protostuff.core that share the same package; protostuff-runtime and protostuff-runtime-registry share the io.protostuff.runtime package. For people using Gradle, you can use https://github.com/jjohannes/extra-java-module-info/issues/1#issuecomment-734366652 as a workaround:

extraJavaModuleInfo {
	automaticModule("protostuff-core-1.7.2.jar", "io.protostuff") {
		mergeJar("protostuff-api-1.7.2.jar")
		mergeJar("protostuff-collectionschema-1.7.2.jar")
	}
	automaticModule("protostuff-runtime-registry-1.7.2.jar", "io.protostuff.runtime") {
		mergeJar("protostuff-runtime-1.7.2.jar")
	}
	...
}

I don’t know what side-effects this might cause, though…

Has there been any consideration for migrating to JPMS modules, or at least resolving these package conflicts? Would packages such as protostuff-core-api-jpms and protostuff-runtime-registry-jpms suffice?