Comment by pjmlp

> I can live inside termux but there are things termux struggles to do,

Because that isn't part of the set of allowed NDK APIs.

https://developer.android.com/ndk/guides/stable_apis

Anything that termux manages to do outside of that list is more out of sheer luck that Android team hasn't closed down that specific Linux syscall.

Initially Android only got the NDK back in Android 2.0, due to pressure from game developers, and Dalvik having such a lame performance, it was never for writing full applications.