To install the caffyne-shell pkg, you will need to install fabric-cli as well; fabric is not needed because caffyne-shell provides it by default.
After installing caffyne-shell please:
cp -r /etc/xdg/caffyne-shell ~/.config/
Now you can run this wayland simple and beautifull shell typing or adding it to your config of Hyprland, Niri or MangoWC.
~/.config/caffyne-shell/./start.sh
Hope you guys and gals enjoy.