github.com/dessalines/thumb-key

Thanks, but I don’t think that it’ll do it for me. I’ve tried similar packages before, and the problem is that I also want the ability to input a bunch of Unicode characters and use keys in terminal emulators and so forth. I’ve considered doing a soft keyboard myself, even, but I just can’t work up the will to go develop for Android with Google slowly closing some stuff. I think that my long-run trajectory is to move what I can to a Linux laptop and hope that GNU/Linux phones eventually become a practical alternative to Android.