It’s open source, but the license agreement prohibits using it in other projects. You can do it for your own personal builds, but not any published builds.
Elements of it, perhaps, but things like the sandboxing are explicitly prohibited in other Android ROMs. Otherwise almost all custom ROMs would be using it, or some flavour of it.
other OSes
And this terminology kind of tells me you don’t really know the custom ROM scene.
You’re supporting diva devs selling out.
We don’t need GOS to do well. We need a fully open ecosystem for phone operating systems. GOS devs don’t let anyone incorporate their code.
They also refuse to provide basic functionality like inverted navbar buttons. Because they’re diva devs.
Is it not open source?
It’s open source, but the license agreement prohibits using it in other projects. You can do it for your own personal builds, but not any published builds.
That’s very false. There are other OSes with GrapheneOS code or forks of GrapheneOS.
Elements of it, perhaps, but things like the sandboxing are explicitly prohibited in other Android ROMs. Otherwise almost all custom ROMs would be using it, or some flavour of it.
And this terminology kind of tells me you don’t really know the custom ROM scene.