On 10 March 2016 at 04:15, Andreas Henriksson <andr...@fatal.se> wrote:
> Hello all!
>
> Thanks for the bug report and *sigh*.
>
> On Wed, Mar 09, 2016 at 09:15:12PM +0100, Michael Biebl wrote:
>> Control: reassign -1 util-linux
>>
>> Am 09.03.2016 um 20:46 schrieb Bill Allombert:
>> > Package: systemd-sysv
>> > Version: 229-2
>> > Severity: important
>> >
>> > Hello Debian systemd Maintainers,
>> >
>> > There is a circular dependency between systemd-sysv, systemd and
>> > util-linux:
>> >
>> > systemd-sysv :Pre-Depends: systemd
>> > systemd :Depends: util-linux (>= 2.27.1)
>> > util-linux :Depends: systemd-sysv
>> >
>> > Circular pre-dependencies are not supported by dpkg.
>>
>> This dependency was introduced by util-linux, so I'm reassigning.
>> I also don't quite understand the alternative dependency on tzdata |
>> systemd-sysv. That's something Andreas most likely can answer.
>
> The reason for tzdata dependency is a bit vague to begin with
> but it's definitely related to the hwclock.sh init script somehow.
> Possibly that can be dropped, but I was hoping it would be safer
> to just append "if you're using systemd, then this dependency is
> definitely optional".
>
> If anyone has any ideas or guesses about why the tzdata dependency was
> introduced to begin with I'd be interested to hear them. The one
> provided by Felipe Sateler sounds very plausible.
>
> For my testing everything worked out fine here and I was hoping an
> *alternative* would have no real effect, but I guess I was wrong then.
>
> Unless anyone sees any problem I guess the best course of action is to
> just drop both of 'tzdata (>= ...) | systemd-sysv'.
Some more information:
Util-linux bug #660365 (fixed a while ago), changed the hwclock.sh
script to no longer use /etc/localtime. So these are the relevant
snippets:
util-linux (2.12r-13) unstable; urgency=low
* Move hwclock.sh to 8 since localtime is now a file, not a symlink.
Adds Depends: tzdata (>=2006c-2)
Closes: #342887
util-linux (2.20.1-5) unstable; urgency=low
* Improve handling of the hardware clock
- Remove redundant hwclockfirst.sh and hwclock.sh. The reason for
this redundant script existing (/etc/localtime not being present
until after /usr was mounted AFAICT) no longer exists. The
hwclock script has been adjusted to run before checkroot.
Closes: #660365
So it seems that the reason for the dependency not only was for
transitional purposes, but also the motive is moot as well as (1)
hwclock no longer reads /etc/localtime and (2) /usr is mounted in the
initramfs.
Semi-related, due to (2), tzdata turned /etc/localtime back into a
symlink on version 2016a-1.
--
Saludos,
Felipe Sateler
