Working well on my phone!
Good to hear.
I struggled for days to get Swift 5.2+ to cross-compile for Android
Depending on which version of the commands you used, there are still things that can go wrong. I will rewrite the Android doc soon to make that less likely, once the patches I mentioned above are in.
The architecture is
x86_64instead ofaarch64
I have not yet bothered to build a Termux package for x86_64. Maybe Jeremy's build will work for you? Note the extra flags he adds when cross-compiling to Android, just as I do when cross-compiling Foundation and the other corelibs.