[SRU] Backintime in Jammy not launching because of error with python 3.10

[Fantu]

[Impact]
Backintime don't start, this is caused by an error with python 3.10 that make it crash on start.

Applied only the specific commit from upstream that fix it to have it uploaded and accepted as soon as possible (in theory), patch attached here.
The ppa with the testing build: https://launchpad.net/~fantonifabio/+archive/ubuntu/ubuntu-fixes

[Test Plan]
Simply start backintime from desktop icon or cli

[Where problems could occur]
FWIK the issue happen always trying to start backintime

[Launchpad Janitor (janitor)]

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

[Brian Murray (brian-murray)]

I went ahead and sponsored this after applying the patch and running update-maintainer. Thanks for the fix!

[Steve Langasek (vorlon)]

Hello Fantu, or anyone else affected,

Accepted backintime into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/backintime/1.2.1-3ubuntu0.1 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, what testing has been performed on the package and change the tag from verification-needed-jammy to verification-done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-jammy. 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.

[arend (arend-bayer)]

This update fixed the bug for me.
Testing done: Upgraded to backintime-common and backintime-qt on kubuntu jammy system (all upgrades, no other packages from -proposed) to the jammy-proposed version today: 1.2.1-3ubuntu0.1' (Ubuntu:22.04/jammy-proposed [all] )

After the upgrade, I was able to start backintime both from cli and KDE startup menu. (Previously, it crashed immediately.) Let me know if you need more information.

[Ganton (ganton)]

If it may be helpful: Previously, I executed `backintime` and it showed:
    Traceback (most recent call last):
        File "/usr/share/backintime/common/backintime.py", line 27, in <module>
            import config
        File "/usr/share/backintime/common/config.py", line 32, in <module>
            import tools
        File "/usr/share/backintime/common/tools.py", line 1802, in <module>
            class OrderedSet(collections.MutableSet):
    AttributeError: module 'collections' has no attribute 'MutableSet'

I executed
    $ dpkg -l | grep backi
    ii backintime-common 1.2.1-3 all simple backup/snapshot system (common files)
    ii backintime-qt 1.2.1-3 all simple backup/snapshot system (graphical interface)

I went to https://launchpad.net/ubuntu/jammy/amd64/backintime-common/1.2.1-3ubuntu0.1 , downloaded http://launchpadlibrarian.net/606412102/backintime-common_1.2.1-3ubuntu0.1_all.deb and executed:
    sudo apt install ./backintime-common_1.2.1-3ubuntu0.1_all.deb

I went to https://launchpad.net/ubuntu/jammy/amd64/backintime-qt/1.2.1-3ubuntu0.1, , downloaded http://launchpadlibrarian.net/606412105/backintime-qt_1.2.1-3ubuntu0.1_all.deb and executed:
    sudo apt install ./backintime-qt_1.2.1-3ubuntu0.1_all.deb

I executed:
    $ dpkg -l | grep backi
    ii backintime-common 1.2.1-3ubuntu0.1 all simple backup/snapshot system (common files)
    ii backintime-qt 1.2.1-3ubuntu0.1 all simple backup/snapshot system (graphical interface)

I executed `backintime` and everything seemed to work correctly.

[Launchpad Janitor (janitor)]

This bug was fixed in the package backintime - 1.2.1-3ubuntu0.1

---------------
backintime (1.2.1-3ubuntu0.1) jammy; urgency=medium

  * Make tests compatible with python 3.10 to avoid crash on application
    start. (LP: #1976164)

 -- Fabio Fantoni <email address hidden> Tue, 24 May 2022 22:58:51 +0200

[Brian Murray (brian-murray)]

The verification of the Stable Release Update for backintime has completed successfully and the package is now being 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.