Bug#951110: ITP: cyrus-timezones -- Timezone information for the Cyrus IMAP Server

[Xavier <yadd@debian.org>]

Hi,

please follow also this discussion:
(https://github.com/cyrusimap/cyrus-timezones/pull/6):

> elliefm:
> I looked deeper into it, and did find and fix one bug in Cyrus, and
> added a workaround for libical misbehaving(?) -- details in the issue
> I linked earlier. The original issue I thought might exist still might
> exist, I haven't tested for it specifically yet due to being
> distracted by the stuff I did fix.
>
> wrt whether or not to packagers should include cyrus-timezones, @rsto
> mentioned in our chat:
>
> > One thing: using the system timezones is not recommended. If I
> > recall correctly, some of the system timezone definitions defined
> > daylight savings time changes per year, which produced unnecessarily
> > long VTIMEZONEs embedded in the VEVENTs returned by Cyrus.
>
> I have mixed feelings. If, as a mail server admin, you're installing
> Cyrus from a system package, it seems reasonable to expect it to use
> the timezone definitions provided by the system. It also seems
> reasonable that, if you wish to supply your own timezone definitions
> instead, that you could configure the zoneinfo_dir setting to point to
> them.
>
> But if, as a package-maintainer, you know your system's timezone
> definitions are "basic timezone definitions for general purpose use,
> but perhaps inadequate or suboptimal for building a calendaring
> service on top of", then it also seems reasonable to package up our
> cyrus-timezones package and make the cyrus-imapd package depend on it.