https://android.googlesource.com/platform/ndk/+/master/docs/...
<quote>
Remove GCC
GCC is still in the NDK today because some of gnustl's C++11 features were written such that they do not work with Clang (threading and atomics, mostly). Now that libc++ is the best choice of STL, this is no longer blocking, so GCC can be removed.
</quote>
Having said that, the reports I've seen contain scant actual evidence that Google actually plan for Andromeda to replace Android, or even that Andromeda is at all important to Google. I take these reports with a mountain of salt. I remember that the "Pixel 3" was definitely just about to be announced back in late 2016, and was definitely going to be running Andromeda OS.
https://fuchsia.googlesource.com/fuchsia/+/master/LICENSE
Source: https://github.com/kubernetes/kubernetes/blob/master/LICENSE
A good example of that is Visual code. I am sure some at github (atom's paprent) is pissed.