touch-packages team mailing list archive

[Brian Murray <brian@xxxxxxxxxx>]

** Changed in: apt (Ubuntu)
   Importance: Undecided => Medium

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to apt in Ubuntu.
https://bugs.launchpad.net/bugs/1436804

Title:
  Names an uninstalled pkg as the reason why a pkg removal fails

Status in apt package in Ubuntu:
  New

Bug description:
  I decided to do a bit of cleanup (purge some unused packages) and I
  ran into this trouble with "apt-get purge":

  ------------------------------------------------
  egmont$ sudo apt-get purge lib32gcc1
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  Some packages could not be installed. This may mean that you have
  requested an impossible situation or if you are using the unstable
  distribution that some required packages have not yet been created
  or been moved out of Incoming.
  The following information may help to resolve the situation:

  The following packages have unmet dependencies:
   nvidia-304 : Depends: lib32gcc1 but it is not going to be installed
  E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
  ------------------------------------------------
  egmont$ sudo apt-get purge nvidia-304
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  Package 'nvidia-304' is not installed, so not removed
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  ------------------------------------------------

  So... It can't purge lib32gcc1 because nvidia-304 depends on
  lib32gcc1, although nvidia-304 is not installed?!? Doesn't make any
  sense to me. "dpkg -l | grep nvidia-304" -> no match.

  On the other hand, "dpkg --purge" correctly tells me that the problem
  is with nvidia-340-updates's dependencies:

  ------------------------------------------------
  egmont$ sudo dpkg --purge lib32gcc1
  dpkg: dependency problems prevent removal of lib32gcc1:
   nvidia-340-updates depends on lib32gcc1.

  dpkg: error processing package lib32gcc1 (--purge):
   dependency problems - not removing
  Errors were encountered while processing:
   lib32gcc1
  ------------------------------------------------

  So eventually "apt-get purge" is correct that the package can't be
  removed without breaking dependencies, but it incorrectly names an
  uninstalled package as the reason rather than an installed one.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: apt 1.0.9.7ubuntu3
  ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
  Uname: Linux 3.19.0-10-generic x86_64
  ApportVersion: 2.16.2-0ubuntu4
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Mar 26 12:37:30 2015
  InstallationDate: Installed on 2012-05-30 (1029 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  SourcePackage: apt
  UpgradeStatus: Upgraded to vivid on 2015-03-17 (8 days ago)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1436804/+subscriptions