nix-shell
python3 -m venv env
source bin/env/activate
pip3 install --upgrade nbxmpp omemo-dr pyobjc cryptography pillow idna precis-i18n certifi css-parser keyring packaging qrcode
download latest gajim version into ./gajim
(doesn't need to be ran from inside the nix-shell)
./launch_gajim.fish