On Tue, 2023-01-10 at 11:49 -0800, Steve Langasek wrote: > On Mon, Jan 09, 2023 at 07:01:05PM +0100, Benjamin Drung wrote: > > Hi everyone, > > > The tzdata package ships /usr/share/zoneinfo/posix/ (for Coordinated > > Universal Time) and /usr/share/zoneinfo/right/ (for International Atomic > > Time). The files in /usr/share/zoneinfo/posix/ are identical to their > > counterpart in /usr/share/zoneinfo/. The tzdata package converts the > > configured posix/* and right/* timezones to their unprefixed variant on > > every package upgrade (e.g. it changes "posix/Europe/Berlin" to > > "Europe/Berlin"). > > > Is there anybody actually using /usr/share/zoneinfo/posix or > > /usr/share/zoneinfo/right? > > > Aurelien and I assume that probably nobody is using them. We plan to > > drop both directories. If nobody speaks up, I will remove them in the > > coming weeks from the Ubuntu tzdata package prior to the feature freeze. > > After the Debian 12 "bookworm" release, we will remove it from Debian. > > In addition to fixing (or at least conflicting with) the bits identified via > a code search (thanks, Shengjing!), I want to assert that the upgrade should > take care of any references to these obsoleted compat links in /etc/timezone > or /etc/localtime. Even if the debconf automation never presented these as > options to the user, we shouldn't break the default system timezone on > upgrade.
Upgrading tzdata will replace the right/* and posix/* timezones. Example: Configure tzdata 2022g-2ubuntu1: ``` $ ln -sf /usr/share/zoneinfo/posix/Europe/Berlin /etc/localtime $ echo "posix/Europe/Berlin" > /etc/timezone ``` Then upgrade: ``` $ apt install ./tzdata_2022g-7ubuntu1_all.deb [...] Current default time zone: 'Europe/Berlin' [...] ``` There was no user interaction when updating the tzdata package. This replacement also works when the timezone is a symlink as well (e.g. Europe/Busingen). -- Benjamin Drung Debian & Ubuntu Developer -- ubuntu-devel mailing list ubuntu-devel@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel
