Java 9 can't compile - com.sun.* package access hell

Hi,

I'm trying a lot of things here, (and I'll add more information if needed) but how can I get IDEA to recognize (and compile) java code that need to use non-opened com.sun.javafx packages ?

This is a maven project, using jdk 9, and I have a module-info.java

import com.sun.javafx.scene.control.behavior.ComboBoxBaseBehavior;

I guess I need to do something like this:

--add-exports javafx.controls/com.sun.javafx.scene.control=ALL-UNNAMED

--add-exports javafx.controls/com.sun.javafx.scene.control.behavior=ALL-UNNAMED

Which I tried to put in the compiler's option in IDEA settings, and I also have those in my pom.xml

But nothing works, all I get is :

package com.sun.javafx.scene.control.behavior is not visible

(package com.sun.javafx.scene.control.behavior is declared in module javafx.controls, which does not export it to module xxx.xxx)

I can't find any *working* information on how to deal with this. The IDE doesn't help me at all, and show me source code that doesn't recognize the import from that package.

What are the steps needed (module-info, maven compile options in pom.xml, etc ?) to have code that

would compile ? is it possible ?