aur package is installing lib files in /usr/bin

[chmouel]

while it's already in /usr/lib :

chmouel@pignon 🦅 ~% pacman -Ql i3-agenda-git|grep .py$    
i3-agenda-git /usr/bin/API.py
i3-agenda-git /usr/bin/cache_utils.py
i3-agenda-git /usr/bin/config.py
i3-agenda-git /usr/bin/event.py
i3-agenda-git /usr/lib/python3.10/site-packages/i3_agenda/API.py
i3-agenda-git /usr/lib/python3.10/site-packages/i3_agenda/__init__.py
i3-agenda-git /usr/lib/python3.10/site-packages/i3_agenda/cache_utils.py
i3-agenda-git /usr/lib/python3.10/site-packages/i3_agenda/config.py
i3-agenda-git /usr/lib/python3.10/site-packages/i3_agenda/event.py
chmouel@pignon 🦅 ~% 

[rosenpin]

I'm not the maintainer of the AUR package. You'll have to contact the maintainer about that.
You can leave a comment here:

https://aur.archlinux.org/packages/i3-agenda/

For now, you can use PIP to install the package