install a suitable C compiler and development packages for python3, ffmpeg (libavcodec, libavformat, libswresample, libswscale), SDL2 (libsdl2, libsdl2-image, libsdl2-gfx, libsdl2-mixer, libsdl2-ttf), libjpeg, libfribidi, libfreetype
mv renpy renpy.dist
git clone https://github.com/renpy/pygame_sdl2
git clone https://github.com/renpy/renpy renpy-git
python3 -m venv venv
source venv/bin/activate
pip3 install -U future ecdsa
python3 pygame_sdl2/setup.py install
python3 pygame_sdl2/setup.py install_headers
python3 renpy-git/module/setup.py install
ln -s renpy-git/renpy renpy
venv/bin/python3 TaxHeaven3000.py
(or just get a prebuilt version of renpy, probably exists somewhere)