How do I create an additional jlink artifact on my jar project? - maven

Question

Using the maven-jlink-plugin, I want to create an additional jlink zip file.
I have configured it like so:
<profile>
<id>jlink</id>
<build>
<plugins>
<!-- to be able to package the application using jlink, all dependencies MUST have a module-info.java. -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jlink-plugin</artifactId>
<version>3.0.0</version>
<executions>
<execution>
<id>create-runtime-image</id>
<phase>package</phase>
<goals>
<goal>jlink</goal>
</goals>
<configuration>
<launcher>memeforcehunt=memeforcehunt.app/io.github.alttpj.memeforcehunt.app.cli.MemeforceHuntApp
</launcher>
<modulePaths>
<modulePath>${project.build.directory}/modules</modulePath>
</modulePaths>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
But when I try to execute mvn package -Pjlink, I get an error message: There is already an artifact attached to the project.
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 34.657 s
[INFO] Finished at: 2020-12-17T14:33:04+01:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-jlink-plugin:3.0.0:jlink (create-runtime-image) on project memeforce-app: You have to use a classifier to attach supplemental artifacts to the project instead of replacing them. -> [Help 1]
But I cannot add a classifier to the jlink-plugin?
Tag request
maven-jlink-plugin => maven-jlink-plugin

Answer 1

This was a known issue, reported in MJLINK-49 and MJLINK-26, and solved via MJLINK-52 - classifier support. This will be available in version 3.1.0.
Solution for the upcoming 3.1.0 version
Just add a classifier. It will be supported.
Workaround for pre-3.1.0 versions
However, you can create the archive using a workaround.
Change your packaging to <packaging>jlink</packaging> and add a jar execution:
<packaging>jlink</packaging>
<!-- … -->
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<executions>
<execution>
<id>create-jar</id>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
<configuration>
<classifier>appjar</classifier>
</configuration>
</execution>
</executions>
</plugin>
<plugins>
</build>
You will get two artifacts out of your project:
groupId:artifactId:version:jlink
and
groupId:artifactId:version:jar:appjar
Please note that the jar will now have a classifier.
Tag request
maven-jlink-plugin => maven-jlink-plugin