Not available in integration until you juggle it a lot

[Linwood-F]

I installed this on HA 105.3 using HACS, and after doing so it did not appear in the list of integrations, including it was not in the list of integrations you can add.

It eventually came visible afterwards, but only after a lot of mascinations: restart HA, reboot the server on which it (as hass.io) runs, restart HA again, reinstall via HACS, restart HA... sometime around this point it came visible. Until then it was not visible. It had no log entries (other than the standard warning of not supported) or other errors.

I'm sorry I do not have more details; there is at least one other report here: