Required module missing in jlink-merged "module-info.java"

[autumoswitzerland]

Preamble:

I am not 100% sure if it's an error of this plugin, it might be just a usage problem.

Description

I have a modular Java FX project and module "autumo.ui.demo", which uses some JAR libs. One is the dependency "ch.autumo.commons:autumo-commons:1.1.0", which is a maven build that was created with an automatic module "autumo.commons". So far so good. This library has a maven-dependency to "commons-dbutils:commons-dbutils:1.8.1" that seems to be not a module when looking at its POM file (https://github.com/apache/commons-dbutils/blob/rel/commons-dbutils-1.8.1/pom.xml).

Problem

Now when executing jlink, a merged "module-info.java" is created which has these 2 uses:

• uses org.apache.commons.dbutils.PropertyHandler;
• uses org.apache.commons.dbutils.ColumnHandler;

These 2 uses are imported in a class in the "autumo.commons" module; so this is correct. But then in the "Task :createMergedModule" this happens:

/Users/Mike/Development/git/repository/autumo-ui-demo/build/jlinkbase/tmpjars/ch.autumo.ui.merged.module/module-info.java:218: Fehler: Package org.apache.commons.dbutils ist nicht vorhanden
    uses org.apache.commons.dbutils.PropertyHandler;
                                   ^
/Users/Mike/Development/git/repository/autumo-ui-demo/build/jlinkbase/tmpjars/ch.autumo.ui.merged.module/module-info.java:219: Fehler: Package org.apache.commons.dbutils ist nicht vorhanden
    uses org.apache.commons.dbutils.ColumnHandler;
                                   ^
2 Fehler

The merged "module-info.java" does NOT have the following "requires" or something similar:

• requires org.apache.commons.dbutils;

I think this is could the problem. It is not detected as a (automatic) module that is needed for the 2 "uses".

How do I achieve that these 2 "uses" do not fail in the build process?

Some infos:

• org.beryx.jlink 2.26.0
• Gradle 8.10.2
• Kotlin 1.9.24
• Groovy 3.0.22
• Apache Ant(TM) version 1.10.14 compiled on August 16 2023
• Launcher JVM: 21.0.3 (Oracle Corporation 21.0.3+7-LTS-152)
• Daemon JVM: /Library/Java/JavaVirtualMachines/jdk-21.0.3.jdk/Contents/Home (no JDK specified, using current Java home)
• OS: Mac OS X 14.5 x86_64

Attached files:

• "gradle.build" (for "autumo.ui.demo") as "gradle.build.txt"
• "module-info.java" ("for autumo.ui.demo") as "module-info.java.txt"
• The merged "module-info.java" produced by jlink-plugin (I think) as "merged-module-info.java.txt"
  build.gradle.txt
  module-info.java.txt
  merged-module-info.java.txt