A DESCRIPTION OF THE PROBLEM :
When we have multiple layers we often need to hide modules of the parent layer from child layers.

For example, we develop an application with plugins. So, we have a base application in boot layer and plugins, where every plugin is located in its own child layer. Its clear that base application doesn't want to show all its modules to child layers. At the same time, it can't be achieved at the module level, because many modules are developed by different companies.

Currently if we need to hide modules it is necessary to create a terrible solution with additional child layers (locating the modules we want to hide in this child layer). Besides, this solution destroys all the architecture of the application.

The problem was also discussed in this thread https://mail.openjdk.org/pipermail/jigsaw-dev/2024-October/015072.html