[Bug 1165172] Re: upgrade 12.10 -> 13.04 fails with Error in function

[Jean-Baptiste Lallement]

The problem is that the following events happens:
= = = = =
Selecting previously unselected package libpython2.7-minimal:amd64.
Unpacking libpython2.7-minimal:amd64 (from .../libpython2.7-minimal_2.7.4~rc1-4ubuntu1_amd64.deb) ...
Replacing files in old package python2.7-minimal ...
Preparing to replace python2.7-minimal 2.7.3-5ubuntu4 (using .../python2.7-minimal_2.7.4~rc1-4ubuntu1_amd64.deb) ...
Unpacking replacement python2.7-minimal ...
Processing triggers for gconf2 ...
dpkg: error processing gconf2 (--unpack):
 gconf2
Preparing to replace gconf2-common 3.2.5-0ubuntu4 (using .../gconf2-common_3.2.6-0ubuntu1_all.deb) ...
Unpacking replacement gconf2-common ...
Preparing to replace libgconf2-4:amd64 3.2.5-0ubuntu4 (using .../libgconf2-4_3.2.6-0ubuntu1_amd64.deb) ...
Unpacking replacement libgconf2-4:amd64 ...
Preparing to replace gconf2 3.2.5-0ubuntu4 (using .../gconf2_3.2.6-0ubuntu1_amd64.deb) ...
Unpacking replacement gconf2 ...
Setting up gconf2-common (3.2.6-0ubuntu1) ...
Selecting previously unselected package libpython2.7-stdlib:amd64.
Unpacking libpython2.7-stdlib:amd64 (from .../libpython2.7-stdlib_2.7.4~rc1-4ubuntu1_amd64.deb) ...
= = = = =

So in this case, the trigger for gconf2 will use modules from the new
libpython2.7-minimal which requires libpython2.7-stdlib while
libpython2.7-stdlib is not yet unpacked and configured. This is not
specific to gconf2 and should be reproducible with other pacakges.

** Tags added: rls-r-incoming

** Summary changed:

- upgrade 12.10 -> 13.04 fails with Error in function
+ upgrade 12.10 -> 13.04 fails : new libpython2.7-minimal used during upgrade while libpython2.7-stdlib is not yet unpacked and configured.

** Package changed: ubuntu-release-upgrader (Ubuntu) => python2.7
(Ubuntu)

** Changed in: python2.7 (Ubuntu)
     Assignee: (unassigned) => Canonical Foundations Team (canonical-foundations)

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https://bugs.launchpad.net/bugs/1165172

Title:
  upgrade 12.10 -> 13.04 fails : new libpython2.7-minimal used during
  upgrade while libpython2.7-stdlib is not yet unpacked and configured.

Status in “python2.7” package in Ubuntu:
  Confirmed

Bug description:
  On upgrading from quantal to rairing the terminal stops with "Error in
  function:"

  Last output:
  Running hooks in /etc/ca-certificate/update.d....
  Adding debian:Actalis_Authentication_Root_CA.pem
  Adding debian:Bypass_Class_2_Root_CA.pem 
  Adding debian:Bypass_Class_3_Root_CA.pem 
  Adding debian:EE_Certification_Centre_Root_CA:pem
  Adding debian:StartCom_Certification_Authority_G2.pem
  Adding debian:Trustis_FPS_Root_CA.pem
  Adding debian:T-TeleSec_GlobalRoot_Class_3.pem
  done.
  done.
  Processing triggers for ureadahead ...
  Processing triggers for dictionaries-common ...
  Processing triggers for libreoffice_common ...
  Error in function:

  A popup show:
  The problem cannot be reported:

  The problem happened with the program /usr/lib/i386-linux-gnu/gdk-
  pixbuf-2.0/gdk-pixbuf-query-loaders which changed since the crash
  occurred.

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