Maven Modules won't compile (Java 9 Modules)

[manic holly]

Hello!
Just a couple of days ago I found a cool project called StreamPi which works as a Elgato Stream Deck alternative.

It has been build in Java 11+ and has a plugin functionality based on Java 9 Modules.
To create a plugin you need to create a module-info.java and later when you done build it with maven and put the Jar file and all the dependencies in the plugin folder.

But here is my problem: I cannot compile the jar. Maven will always give me this error: https://pastebin.com/g5Ph37eA
My project is going to be open source so here is the GitHub link to the project: https://github.com/DerEingerostete/StreamPi-Hue
Some reference about the plugin system (sadly there is no Documentation): https://github.com/stream-pi/essential-actions

Any help is appreciated
(I know it would be better to post this question in the official StreamPi Discord Server but sadly they aren't really active so I thought I could find some help here as well)

[rustic lake]

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[hasty cradle]

First thing first: do it without lombok.
After you've managed to do it without lombok and without any issue, then it may be time to try and "simplify" things by adding lombok. Not before

[muted sinew]

add lombok as an annotation processor

to the maven-compiler-plugin

[manic holly]

How can I do that?

[muted sinew]

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                            <version>${lombok.version}</version>
                        </path>
                    </annotationProcessorPaths>
                </configuration>
            </plugin>

[manic holly]

Thank you I'll do that

[manic holly]

This and a StackOverflow (https://stackoverflow.com/questions/53477690/properly-implementing-java-modules-in-a-maven-build-with-inter-module-test-depen) post helped me fix it. Thank you Daniel