I wrote a Thunderbird add-on for my work computer that periodically
exports my entire DTEX calendar to a file. Unfortunately, the file it
creates is not directly usable by the kitchen screen server currently;
it seems to use a time zone identifier that `tzinfo` doesn't understand:
```
Error in background update:
Traceback (most recent call last):
File "/usr/local/kitchen/lib64/python3.12/site-packages/kitchen/service/agenda.py", line 19, in _background_update
await self._update()
File "/usr/local/kitchen/lib64/python3.12/site-packages/kitchen/service/agenda.py", line 34, in _update
calendar = await self.fetch_calendar(
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/kitchen/lib64/python3.12/site-packages/kitchen/service/caldav.py", line 39, in fetch_calendar
return icalendar.Calendar.from_ical(r.text)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/kitchen/lib64/python3.12/site-packages/icalendar/cal.py", line 369, in from_ical
_timezone_cache[component['TZID']] = component.to_tz()
^^^^^^^^^^^^^^^^^
File "/usr/local/kitchen/lib64/python3.12/site-packages/icalendar/cal.py", line 659, in to_tz
return cls()
^^^^^
File "/usr/local/kitchen/lib64/python3.12/site-packages/pytz/tzinfo.py", line 190, in __init__
self._transition_info[0])
~~~~~~~~~~~~~~~~~~~~~^^^
IndexError: list index out of range
```
It seems to work fine in Nextcloud, though, so the work-around is to
import it as a subscription in Nextcloud and then read it from there,
using Nextcloud as a sort of proxy.
Dustin
7c9737e092