[ilu2026]

I gave another try to check for any open source update, it is not and added more mess. See here https://docs.sailfishos.org/Develop/Open_Source/ :

“As described in the architecture documentation Sailfish OS consists of a variety of components, some of which are proprietary and closed source (such as some hardware-specific kernel modules, or other software licensed under commercial terms), and most of which are open source.”

They removed open source components from “architecture documentation”

The os is impossible to build and test like linux despite of being based on open source project like linux, wayland, QT, etc.

SailfishOS is closer source than Android. Android you can compile and degoogle it.