Bug#812421: apt: "apt upgrade" exits with "E: Broken packages" instead of upgrading

[James McCoy <jamessan@debian.org>]

Control: found -1 1.8.4

On Sat, Jan 23, 2016 at 11:06:54AM -0500, James McCoy wrote:
> "apt upgrade" is erroring out instead of letting me upgrade packages
> uninvolved with the qt packages.

I'm running into this problem again.

I have the old (now removed from the archive) git-remote-bzr package
installed, and it Replaces/Conflicts bzr-git.  The upgrade candidate for
the bzr package Depends on brz, which Provides bzr-git.

--->8---
$ sudo apt upgrade -o debug::pkgProblemResolver=true
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Entering ResolveByKeep 10%
  Dependencies are not satisfied for git-remote-bzr:amd64 < 0.3-2 @ii mK Ib >
Keeping package git-remote-bzr:amd64
  Dependencies are not satisfied for git-remote-bzr:amd64 < 0.3-2 @ii mK Ib >
Package git-remote-bzr:amd64 git-remote-bzr:amd64 Conflicts on bzr-git:amd64 < none | 0.6.13+bzr1650+brz1 @un uH >
  Dependencies are not satisfied for git-remote-bzr:amd64 < 0.3-2 @ii mK Ib >
  Dependencies are not satisfied for git-remote-bzr:amd64 < 0.3-2 @ii mK Ib >
  Dependencies are not satisfied for git-remote-bzr:amd64 < 0.3-2 @ii mK Ib >
Calculating upgrade... 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:
 git-remote-bzr : Conflicts: bzr-git
E: Broken packages
---8<---

However, I can use “apt-get upgrade” just fine.

Cheers,
-- 
James
GPG Key: 4096R/91BF BF4D 6956 BD5D F7B7  2D23 DFE6 91AE 331B A3DB