[Bug 1749036] Re: package libcomerr2 1.43.8-2 failed to install/upgrade: libcomerr2:all 1.43.9-1 (Multi-Arch: no) is not co-installable with libcomerr2 which has multiple installed instances

[Theodore Ts'o]

Note that libcomerr2 has been renamed to libcom-err2 to conform with
Debian's packaging naming guidelines.   So libcomerr2 is now a
transitional package (arch=all) where previously it was a binary
package.

Why this is failing on Ubuntu is a complete mystery to me.  On Debian
Unstable, using "apt-get update --with-new-pkgs" it Just Works For
Me.....

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Title:
  package libcomerr2 1.43.8-2 failed to install/upgrade: libcomerr2:all
  1.43.9-1 (Multi-Arch: no) is not co-installable with libcomerr2 which
  has multiple installed instances

Status in e2fsprogs package in Ubuntu:
  New

Bug description:
  This happened during a partial upgrade of Bionic.

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: libcomerr2 1.43.8-2
  ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
  Uname: Linux 4.13.0-32-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.8-0ubuntu8
  Architecture: amd64
  Date: Mon Feb 12 15:51:57 2018
  Dependencies:
   gcc-7-base 7.2.0-18ubuntu2
   libc6 2.26-0ubuntu2
   libgcc1 1:7.2.0-18ubuntu2
  DpkgTerminalLog:
   Preparing to unpack .../comerr-dev_2.1-1.43.9-1_amd64.deb ...
   Unpacking comerr-dev:amd64 (2.1-1.43.9-1) over (2.1-1.43.8-2) ...
   dpkg: error processing archive /var/cache/apt/archives/libcomerr2_1.43.9-1_all.deb (--unpack):
    libcomerr2:all 1.43.9-1 (Multi-Arch: no) is not co-installable with libcomerr2 which has multiple installed instances
  DuplicateSignature:
   package:libcomerr2:1.43.8-2
   Unpacking comerr-dev:amd64 (2.1-1.43.9-1) over (2.1-1.43.8-2) ...
   dpkg: error processing archive /var/cache/apt/archives/libcomerr2_1.43.9-1_all.deb (--unpack):
    libcomerr2:all 1.43.9-1 (Multi-Arch: no) is not co-installable with libcomerr2 which has multiple installed instances
  ErrorMessage: libcomerr2:all 1.43.9-1 (Multi-Arch: no) is not co-installable with libcomerr2 which has multiple installed instances
  InstallationDate: Installed on 2013-01-16 (1853 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130116)
  Python3Details: /usr/bin/python3.6, Python 3.6.4, python3-minimal, 3.6.4-1
  PythonDetails: /usr/bin/python2.7, Python 2.7.14+, python-minimal, 2.7.14-4
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu1
   apt  1.6~alpha7ubuntu1
  SourcePackage: e2fsprogs
  Title: package libcomerr2 1.43.8-2 failed to install/upgrade: libcomerr2:all 1.43.9-1 (Multi-Arch: no) is not co-installable with libcomerr2 which has multiple installed instances
  UpgradeStatus: No upgrade log present (probably fresh install)

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