Multirelease with modules, java9

Hi.

I require a lwjgl module (org.lwjgl.vulkan.natives) in one of my modules. The compilation (as Spasi explained) fails on windows/linux as natives are not needed there (so its not available during the compilation).
If I remove the requires than it does compile on windows/linux/osx, but it does not run on OSX as the needed lib is not on the classpath during runtime.

The thing is that without requiring natives, after compilation and BEFORE jlinking, there is a

lwjgl-vulkan-3.2.1-SNAPSHOT-natives-macos.jar

in my mods directory, so I thought, I would just need to add that too when jlinking (on OSX) and it will be fine.

So I use jlink then:

jlink --module-path $JAVA_HOME/jmods:build/mods --add-modules org.lwjgl.vulkan.natives --add-modules spck.game --launcher APP=mymodule/Main --compress 2 --no-header-files --no-man-pages --strip-debug --output build/release

But

--add-modules org.lwjgl.vulkan.natives

did not help, it still fails to run on OSX as it does not find the moltenvk libs.

What did I miss?