I have the following exception

Caused by: java.lang.NoSuchMethodError: 'com.fasterxml.jackson.core.StreamReadConstraints com.fasterxml.jackson.dataformat.yaml.YAMLParser.streamReadConstraints()'

which is, probably, because I have multiple versions of that dependency in my classpath (2.14.2 and 2.16.1) what's the best way to debug and fix that?

Put all your plugin dependencies in

buildSrc/build.gradle.kts

(or

build-logic

if you're using included builds)

Here you can find my classpath,

dependencies

and

dependencyInsight --dependency com.fasterxml.jackson.core

When / where do you get that exception, how do you execute?

I'm running

object ImageJMainTest {
    @JvmStatic
    fun main(args: Array<String>) {
        ImageJMain.main(args)
    }
}

from the tests, via Idea gui

Can you have two versions of a given dependency in a runtime classpath? I always thought Gradle would resolve to always one

Can you have two versions of a given dependency in a runtime classpath?

If you force it to, sure.

Idea gui

This is probably the issue ?

Maybe it's not going through Gradle at all?

good point, it's not > /home/elect/.jdks/openjdk-21.0.2/bin/java -javaagent/home/elect/.local/share/JetBrains/Toolbox/apps/intellij idea ultimate 2/lib/idea rt.jar=33175/home/elect/.local/share/JetBrains/Toolbox/apps/intellij-idea-ultimate-2/bin -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.stderr.encoding=UTF-8 -classpath.... sc.iview.ImageJMainTest

Share the issue when you have it. I'm curious if there is a good solution to that problem.

That's why you most problably should use the default which is delegating to Gradle. There you can then also do dirty trickery if needed like

tasks
    .withType<JavaExec>()
    .matching { it.name.endsWith(".main()") }
    .configureEach { ... }

Would be cool to be able to give IJ a task to execute for a given funcion:

object ImageJMainTest {
    // ij-gradle-task: runMain
    @JvmStatic
    fun main(args: Array<String>) {
        ImageJMain.main(args)
    }
}