Wanted to mention that Sailfish has a lot of closed-source components, especially UI-related, despite the overall marketing/"vibe" making it look very open. If anything, AOSP (Android) is more open than Sailfish. I don't think this has changed with Sailfish 5, see e.g.: - https://forum.sailfishos.org/t/sailfish-os-clarifying-claims... - https://docs.sailfishos.org/Develop/Open_Source/
They are (slowly) releasing more and more components https://forum.sailfishos.org/t/open-sourcing-proceeding/2468... https://github.com/sailfishos/sailfish-weather/ https://github.com/sailfishos/jolla-camera It's still more open than AOSP
Uh, no? How are you getting this idea?
This is the manifest file for GrapheneOS: https://github.com/GrapheneOS/platform_manifest/blob/17/defa...
It literally contains links to all the AOSP repos or GrapheneOS forks of them. You can clone these exact repos and build the OS from source. GrapheneOS provides instructions for it: https://grapheneos.org/build