@wolf480pl @domi @rozenglass @ignaloidas Well basically no device can be usable with 100% open-source puritanism (and a fun one is open-source excludes pre-generated code, hello autoconf).

But on Android side of the spectrum you're stuck with the vendor random fork of the kernel, can't choose your libc (annoying given how anemic bionic is), and so far haven't seen really significant userland changes (like say ssh daemon and other Unixy things we're used to).
Which is quite why to me Lineage is just modding.