[kwlug-disc] Debian/Ubuntu dependency management

[Paul Gallaway]

I agree, it's awesome. I see this sometimes too and I wonder if it
happens when repositories are still syncing. So by the next day the
mirrors have finishing syncing packages and updates go smoothly.

I have three home systems on Wheezy since the early days of it being
testing and stuck with it when it switched to stable. I had been
running testing for a number of years previously I've been really
enjoying the low maintenance that stable requires. The backports
repository has really improved the long-term usability of stable on
the desktop which had been my issue previously. I would start on
stable, want some such improvement from package x so dist-upgrade to
testing/sid to get it (or pin so many packages that I was effectively
running testing/sid). I do currently have an issue with the current
backport Nvidia drivers not working with 3.14 from backports (or at
all with 3.14 from the reading I did a month ago) so it's not bullet
proof. On the bright side nouveau drivers are much better than the
were a couple years ago when I last tested them. Advanced VDPAU
deinterlacing is really nice to have for 1080i content recorded in
myth which is the only reason I care to use Nvidia over nouveau.
~pAul.

all good things, all in good time...


On Tue, Aug 12, 2014 at 10:52 AM, Khalid Baheyeldin <kb at 2bits.com> wrote:
> Anyone using a Debian based system knows that dependency its management is
> top notch (as discussed/debated in other threads).
>
> A recent case in point is an update to a package that caused a conflict, and
> a manual choice to be made. This is something that is extremely rare. Even
> when it happened, someone detects that and in a few days it is fixed and the
> upgrade goes through seamlessly.
>
> So, yesterday I got notified of updates pending, and when I tried to apply
> them, I got the conflict below.
>
> So, I just waiting for a day, then did an aptitude update, and lo and behold
> the conflict was resolved ...
>
> Here is what it was yesterday ...
>
> The following NEW packages will be installed:
>   libavcodec53{a} libavutil51{a}
> The following packages will be upgraded:
>   ffmpeg krb5-locales libav-tools libavdevice53 libavfilter2 libavformat53
> libgssapi-krb5-2 libgssapi-krb5-2:i386 libk5crypto3
>   libk5crypto3:i386 libkrb5-3 libkrb5-3:i386 libkrb5support0
> libkrb5support0:i386 libpostproc52 libswscale2
> 16 packages upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
> Need to get 5,541 kB of archives. After unpacking 7,266 kB will be used.
> The following packages have unmet dependencies:
>  libavutil-extra-51 : Conflicts: libavutil51 but 4:0.8.15-0ubuntu0.12.04.1
> is to be installed.
>  libavcodec-extra-53 : Conflicts: libavcodec53 but 4:0.8.15-0ubuntu0.12.04.1
> is to be installed.
> The following actions will resolve these dependencies:
>
>      Remove the following packages:
> 1)     libavcodec-extra-53
> 2)     libavutil-extra-51
>
>      Leave the following dependencies unresolved:
> 3)     kubuntu-restricted-extras recommends libavcodec-extra-53
>
>
> Accept this solution? [Y/n/q/?] q
> Abandoning all efforts to resolve these dependencies.
>
> And here it is today ...
>
> The following packages will be upgraded:
>   ffmpeg flashplugin-installer krb5-locales libapparmor-perl libapparmor1
> libav-tools libavcodec-extra-53 libavdevice53
>   libavfilter2 libavformat53 libavutil-extra-51 libgssapi-krb5-2
> libgssapi-krb5-2:i386 libk5crypto3 libk5crypto3:i386 libkrb5-3
>   libkrb5-3:i386 libkrb5support0 libkrb5support0:i386 libpostproc52
> libswscale2
> 21 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
> Need to get 5,631 kB of archives. After unpacking 10.2 kB will be used.
> Do you want to continue? [Y/n/?]
> --
> Khalid M. Baheyeldin
> 2bits.com, Inc.
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