I think @Borgy did something like Editing Component Files in Hassio.
I.e., copy everything from https://github.com/home-assistant/home-assistant/tree/main/homeassistant/components/daikin into /config/custom_components/daikin and change all refrences of
from pydaikin.appliance import Appliance
to
from custom_components.pydaikin.appliance import Appliance
and copy everything from bitbucket to /config/custom_components/pydaikin
I’ll try to get this to the official Daikin component as soon as I get hold of the maintainer of the pydaikn library.