Language packs broken, due to "dependency cycle"

[Lorenzo Hernández García-Hierro (a.k.a. trulux)]

Hi,
I *can't* install any language pack, examples:

Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
  language-pack-en-update
Recommended packages:
  language-support-en
The following NEW packages will be installed:
  language-pack-en language-pack-en-update
0 upgraded, 2 newly installed, 0 to remove and 1 not upgraded.
Need to get 0B/4068kB of archives.
After unpacking 15,8MB of additional disk space will be used.
Do you want to continue? [Y/n] y
WARNING: The following packages cannot be authenticated!
  language-pack-en language-pack-en-update
Install these packages without verification? [y/N] y
E: Couldn't configure pre-depend language-pack-en for language-pack-en-update,
probably a dependency cycle.

Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
  language-pack-es-update
The following NEW packages will be installed:
  language-pack-es language-pack-es-update
0 upgraded, 2 newly installed, 0 to remove and 1 not upgraded.
Need to get 0B/4686kB of archives.
After unpacking 15,4MB of additional disk space will be used.
Do you want to continue? [Y/n] y
WARNING: The following packages cannot be authenticated!
  language-pack-es language-pack-es-update
Install these packages without verification? [y/N] y
E: Couldn't configure pre-depend language-pack-es for language-pack-es-update,
probably a dependency cycle.

I think this is a major issue which seems not related with my side.
It's broken :(

Cheers.

[Matt Zimmerman (mdz)]

From what repository are you installing those packages? The authentication
prompt would seem to indicate that it is an unofficial repository.

[Colin Watson (cjwatson)]

I checked on archive.ubuntu.com, where language-pack-en and
language-pack-en-update indeed have a Depends/Pre-Depends loop.

[Lorenzo Hernández García-Hierro (a.k.a. trulux) (lorenzo-debian-hardened)]

(In reply to comment #1)
> From what repository are you installing those packages? The authentication
> prompt would seem to indicate that it is an unofficial repository.

Hi Matt,

I'm using the same one as Colin (the official archive), I did a dist-upgrade
from Wsrty, among some errors, the most notably ones were this one and missing
icons.

Cheers.

[Martin Pitt (pitti)]

*** Bug 13401 has been marked as a duplicate of this bug. ***

[Martin Pitt (pitti)]

I just uploaded a new set of language packs which do not contain a cycle any
more. Now the base package just recommends the update package.

To make installation more obvious, the packages have been renamed:

  l-pack-foo-update => l-pack-foo
  l-pack-foo => l-pack-foo-base

Thus users installing "language-pack-foo" still get the right thing.

The upgrade should automatically remove the obsolete -update package.