JavaFX plugin forces Gradle to put libraries on the modulepath instead of the classpath

How to reproduce:

• Gradle version 6.7.1
• JavaFX plugin version 0.0.9

Given a modular project with a module-info.java in its main root. And the following Gradle config:

java {
  modularity.inferModulePath.set(true)
  toolchain {
    languageVersion.set(JavaLanguageVersion.of(11))
  }
}

And a non-modular test dependency, e.g. testImplementation("com.tngtech.archunit:archunit-junit5:0.14.1")

And a test case, e.g.

@AnalyzeClasses(packages = "*", importOptions =  { ImportOption.DoNotIncludeTests.class })
public class ArchitectureTest {
    @ArchTest
    public static final ArchRule CYCLE_RULE = slices().matching("..(*)..").should().beFreeOfCycles();
}

When I run the test case with Gradle 6.7.1

Expected behaviour: Then the test case runs Current behaviour: Then the test case does not run, due to a java.lang.module.ResolutionException

[falkoschumann]

As workaround, remove javafx-gradle-plugin and add JavaFX manually:

def openjfxGroup = 'org.openjfx'
def openjfxVersion = '15.0.1'
def osName = System.properties['os.name'].toLowerCase()
def openjfxPlatform = osName.contains('mac') ? 'mac' : osName.contains('win') ? 'win' : osName.contains('linux') ? 'linux' : null

dependencies {
  api(group: openjfxGroup, name: 'javafx-base', version: openjfxVersion, classifier: openjfxPlatform)
  api(group: openjfxGroup, name: 'javafx-graphics', version: openjfxVersion, classifier: openjfxPlatform)
  api(group: openjfxGroup, name: 'javafx-controls', version: openjfxVersion, classifier: openjfxPlatform)
}

java {
  modularity.inferModulePath = true
}

This works with Gradle 6.7. All used JavaFX modules must be added because transitiv dependencies are not solved automatically. For my use case, the javafx-gradle-plugin should only resolve transitive dependencies of JavaFX module and platform.

[MrcJkb]

Sure. I’ll look into it when I have some time.