...aaand you should have a hello.apk file now, ready to be installed on an ARM-based Android device. Worked For Me™... In case of problems installing or opening the apk on your device, try running adb logcat (yep, that requires Android Studio... or you could try python-adb). I suggest searching for "InstallInstall" and "InstallFail" messages, verifier/verification messages, and Java-like exception stack traces. You're welcome to post your problems as issues on this repository, but I can't promise I will be able to help you in any way. We can treat them as "observations" or "reports". Maybe someone else will come by and suggest some steps for future experimenters.