[Bug 1552792] Please test proposed package

[Brian Murray]

Hello Kev, or anyone else affected,

Accepted gnome-software into bionic-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/gnome-
software/3.28.1-0ubuntu4.18.04.7 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-bionic to verification-done-bionic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-bionic. 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.

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https://bugs.launchpad.net/bugs/1552792

Title:
  gnome software leaves dependencies installed

Status in GNOME Software:
  Invalid
Status in Release Notes for Ubuntu:
  Fix Released
Status in gnome-software package in Ubuntu:
  Fix Released
Status in packagekit package in Ubuntu:
  Fix Released
Status in gnome-software source package in Bionic:
  Fix Committed
Status in packagekit source package in Bionic:
  Fix Committed
Status in gnome-software source package in Cosmic:
  Fix Released
Status in packagekit source package in Cosmic:
  Fix Released

Bug description:
  [Impact]
  Installing an application them removing it leaves dependencies behind.

  [Test Case]
  1. Ensure that GNOME Sudoku is not installed:
  $ sudo apt remove gnome-sudoku libqqwing2v5
  2. Check if you have any packages that need autoremoval:
  $ sudo apt autoremove --no-act
  3. Open GNOME Software.
  4. Search for and install GNOME Sudoku (make sure to install the .deb, not the snap).
  5. Uninstall GNOME Sudoku.
  6. Check if you have any packages that need autoremoval:
  $ sudo apt autoremove --no-act

  Expected result:
  The packages in step 6 are the same as in step 2 (which might be none).

  Observed result:
  The packages in step 6 includes libqqwing2v5, which is a dependency of gnome-sudoku and not useful without the game installed.

  [Regression Potential]
  This requires a fix to PackageKit which used to autoremove all packages (too aggressive), not just the ones related to the current transaction. A bug in the code could cause more packages to be removed than is suitable. GNOME Software previously didn't use this autoremove functionality, so by enabling it we could trigger a problem in either the existing code or the new fix.

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