SRU - missing breaks/replaces for Bionic -> Cosmic upgrade

[Rik Mills]

Breeze (4:5.13.5-0ubuntu2
Cosmic 18.10

Preparing to unpack .../breeze_4%3a5.13.5-0ubuntu2_amd64.deb ...
Unpacking breeze (4:5.13.5-0ubuntu2) over (4:5.12.6-0ubuntu0.1) ...
dpkg: error processing archive /var/cache/apt/archives/breeze_4%3a5.13.5-0ubuntu2_amd64.deb (--unpack):
 trying to overwrite '/usr/share/metainfo/org.kde.breezedark.desktop.appdata.xml', which is also in package plasma-look-and-feel-org-kde-breezedark-desktop 4:5.12.6-0ubuntu0.1
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/breeze_4%3a5.13.5-0ubuntu2_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Appropriate breaks/replaces were in place, but these got accidentally dropped in a debian merge. Test upgrades prior to release did not see this issue, but appears it can happen in some case depending on how things are processed.

[Impact]

 * Fix a corner case failure in Bionic -> Cosmic upgrades

[Test Case]

 * Manual switch sources.list to Cosmic, and try to upgrade breeze

[Regression Potential]

 * Restoration of breaks/replaces, so main risk is somehow finding upgrade impossible (unlikely) or the general risk associated with rebuilding a source to change package relationships. Both are minimal.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Brian Murray (brian-murray)]

Hello Rik, or anyone else affected,

Accepted breeze into cosmic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/breeze/4:5.13.5-0ubuntu2.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-cosmic to verification-done-cosmic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-cosmic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Yorick Maloy (yorickmaloy)]

My workaround on Kubuntu 18.04 (bionic):

Trying to remove "breeze" failed, telling me that "kubuntu-desktop",
"plasma-desktop", and "plasma-integration breeze" depend on it.
So I first remove "breeze", forcing it to ignore these dependencies:

# dpkg -r --ignore-depends=kubuntu-desktop,plasma-desktop,plasma-integration breeze

(I'm not sure whether I also removed "plasma-look-and-feel-org-kde-breezedark-desktop"
in the same way. I think I didn't.)

Then I reinstall the two packages:

# apt --fix-broken install plasma-look-and-feel-org-kde-breezedark-desktop
# apt --fix-broken install breeze

Then, again I start a regular system update.
This installs the other 1000+ updates.

# apt update
# apt dist-upgrade
# apt clean
# apt autoclean
# apt autoremove --purge

Hope this helps.
(And hope it doesn't keep the Ubuntu folks from fixing it.)

[Yorick Maloy (yorickmaloy)]

To be more precise on the first line of my above comment:
"My workaround on Kubuntu 18.04 (bionic) being updated to 18.10 (cosmic)"

[Brian Murray (brian-murray)]

Hello Rik, or anyone else affected,

Accepted breeze into cosmic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/breeze/4:5.13.5-0ubuntu2.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-cosmic to verification-done-cosmic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-cosmic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Rik Mills (rikmills)]

Testing upgrading breeze with and without proposed enabled in cosmic repos.

Without = conflict as will process breeze main package 1st
With = success with no conflict as intended, where plasma-look-and-feel-org-kde-breezedark-desktop is forced to be upgraded 1st.

[Rik Mills (rikmills)]

Don't see any apparent regressions with rebuilt package.

[Launchpad Janitor (janitor)]

This bug was fixed in the package breeze - 4:5.13.5-0ubuntu2.2

---------------
breeze (4:5.13.5-0ubuntu2.2) cosmic; urgency=medium

  * Add missing comma in replaces field to fix build.
  * Resolves (LP: #1799010)

 -- Rik Mills <email address hidden> Wed, 24 Oct 2018 14:22:02 +0100

[Brian Murray (brian-murray)]

The verification of the Stable Release Update for breeze has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.