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

[James McCoy <jamessan@debian.org>]

On Thu, Oct 10, 2019 at 08:25:50AM -0400, James McCoy wrote:
> On Thu, Oct 10, 2019 at 08:13:51AM -0400, James McCoy wrote:
> > 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.
> > 
> > [snip]
> > However, I can use “apt-get upgrade” just fine.
> 
> And that “apt-get upgrade -o APT::Get::Upgrade-Allow-New=true” fails the
> same way “apt upgrade” does.

Here's the debug info Julian requested on IRC:

$ sudo apt upgrade -o debug::pkgDepCache::Marker=1
Reading package lists... Done
Building dependency tree       
Reading state information... Done
  MarkInstall bzr:amd64 < 2.7.0+bzr6622-17 -> 2.7.0+bzr6622+brz @ii umU Ib > FU=0
    MarkInstall brz:amd64 < none -> 3.0.2-1 @un uN Ib > FU=0
      MarkInstall python3-breezy:amd64 < none -> 3.0.2-1 @un uN Ib > FU=0
        MarkInstall python3-configobj:amd64 < none -> 5.0.6-3 @un uN > FU=0
        MarkInstall python3-dulwich:amd64 < none -> 0.19.14-2 @un uN IPb > FU=0
          MarkInstall python3-fastimport:amd64 < none -> 0.9.8-5 @un uN > FU=0
        MarkInstall python3-launchpadlib:amd64 < none -> 1.10.9-1 @un uN Ib > FU=0
          MarkInstall python3-keyring:amd64 < none -> 18.0.1-1 @un uN Ib > FU=0
            MarkInstall python3-entrypoints:amd64 < none -> 0.3-1 @un uN > FU=0
            MarkInstall python3-secretstorage:amd64 < none -> 2.3.1-2 @un uN > FU=0
          MarkInstall python3-lazr.restfulclient:amd64 < none -> 0.14.2-2 @un uN Ib > FU=0
            MarkInstall python3-lazr.uri:amd64 < none -> 1.0.3-4 @un uN > FU=0
            MarkInstall python3-simplejson:amd64 < none -> 3.16.0-2+b1 @un uN > FU=0
            MarkInstall python3-wadllib:amd64 < none -> 1.3.3-3 @un uN > FU=0
        MarkInstall python3-github:amd64 < none -> 1.43.7-1 @un uN Ib > FU=0
          MarkInstall python3-deprecated:amd64 < none -> 1.2.7-1 @un uN Ib > FU=0
            MarkInstall python3-wrapt:amd64 < none -> 1.11.2-2+b1 @un uN > FU=0
        MarkInstall python3-gitlab:amd64 < none -> 1:1.13.0-1 @un uN > FU=0
        MarkInstall python3-gpg:amd64 < none -> 1.13.1-1 @un uN > FU=0
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

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