[sloum]

Found it:

> “Covered application store” means a publicly available internet website, software application, online service, or platform that distributes and facilitates the download of applications from third-party developers to users of a computer, a mobile device, or any other general purpose computing that can access a covered application store or can download an application.

To whittle down the the important part:

> “Covered application store” means > any [...] general purpose computing that can access a covered application store or can download an application

If you have a network stack, you can 100% connect to a "covered application store" and thus the OS falls under the scope of the law.