Found out that the tronpy library is installable in a Python 3.11 venv in Alpine chroot in rooted Kindle (the one on MT8110, Bellatrix board), just needed to make sure the following packages were installed on the Alpine side before running pip install tronpy:

python3-dev libtool autoconf automake musl-dev libffi-dev

(note: if you actually decide building tronpy directly on a Bellatrix device in a venv like I did, be ready to wait for about 30 minutes for the build to finish, if you're not using venv, you can also add py3-regex, py3-ctoolz and py3-pycryptodome packages and the process will be quicker)

Why? Well... The situation with usable FOSS TRON wallets for desktop/CLI is close to catastrophic. Really ready to begin writing my own one on top on tronpy, starting tomorrow. Just wanted to be confident that I'm going to be able to run it even on my wifi-enabled e-reader if I really need to.