dpkg ugrade error - files in qtermwidget5-data also in old qtermwidget-l10n

sudo apt-get autoremove
[sudo] password for christopher:
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 libqtermwidget5-0 : Depends: qtermwidget5-data (= 0.14.1-2) but 0.14.1-0ubuntu3 is installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
christopher@christopher-laptop:~$ sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  fonts-hack-ttf libiptc0
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  qtermwidget5-data
The following packages will be upgraded:
  qtermwidget5-data
1 upgraded, 0 newly installed, 0 to remove and 18 not upgraded.
1 not fully installed or removed.
Need to get 0 B/19.8 kB of archives.
After this operation, 54.3 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database ... 320560 files and directories currently installed.)
Preparing to unpack .../qtermwidget5-data_0.14.1-2_all.deb ...
Unpacking qtermwidget5-data (0.14.1-2) over (0.14.1-0ubuntu3) ...
dpkg: error processing archive /var/cache/apt/archives/qtermwidget5-data_0.14.1-
2_all.deb (--unpack):
 trying to overwrite '/usr/share/qtermwidget5/translations/qtermwidget_ca.qm', w
hich is also in package qtermwidget-l10n 0.14.1-0ubuntu3
Errors were encountered while processing:
 /var/cache/apt/archives/qtermwidget5-data_0.14.1-2_all.deb
libdvd-pkg: Package libdvdcss2-1.4.2-1 was removed, stop processing...
E: Sub-process /usr/bin/dpkg returned an error code (1)

Just to update with some observations:

 * This is in part due to the fact that vorlon sync'd qtermwidget 0.14.1-2, dropping all the Ubuntu changes.
 * Version 0.7.1-3 added a recommendation for qtermwidget-l10n and has never been dropped.
 * lxqt-l10n was deprecated in 2018, just before the 0.9.0 release of qtermwidget.
 * Version 0.14.0 moved translations from lxqt-l10n to qtermwidget.
 * Version 0.14.0-0ubuntu1 moved translations into a new qtermwidget-l10n package in the qtermwidget source package. (25 Jan 2019)
 * Version 0.14.0-1 moved translations into the existing qtermwidget-data binary package (27 Jan 2019)
 * lxqt-l10n was removed from Debian in February 2019.

So ultimately there was a difference in how Debian and Ubuntu dealt with this. And also, Debian is all messed up.

there was never a qtermwidged-l10n package - have a look at lxqt-l10n - there was a qterminal-l10n package, the widget package was planned. So the only thing that is messed up is Ubuntu - and the packaging is marked as $fooubuntu - but the recommendation to a package that not exist in debian is a nice catch - will fix it :)

Yep, Ubuntu added a qterminal-l10n package in this upload, which never happened in Debian.

https://launchpad.net/ubuntu/+source/qtermwidget/0.14.0-0ubuntu1

Looks like that was done in Ubuntu shortly ahead of Debian packaging the same version, and Lubuntu and Debian chose different paths. Ubuntu put the new translation files in a new qterminal-l10n, while Debian/alf chose to put them in the -data package. Since that divergence, there had (until now) been no sync or merge from debian, so it never caused an issue.

What about adding

breaks qtermwidget-l10n
replaces qtermwidget-l10n

into the control file for qtermwidget5-data

Also ran into this problem this morning, kind of like "quicksand" in that it won't run "autoremove" and -f install also errors out . . . a conundrum within a conundrum . . . in Lu 20.04 . . .

This bug was fixed in the package qtermwidget - 0.14.1-3ubuntu1

---------------
qtermwidget (0.14.1-3ubuntu1) focal; urgency=medium

  * debian/control: Add Breaks/Replaces on qtermwidget-l10n to
    qtermwidget5-data. Fixes upgrade from 0.14.1-0ubuntu3 or earlier.
    (LP: #1864170)

 -- Rik Mills <email address hidden> Tue, 25 Feb 2020 16:24:33 +0000

Jut ran a basic apt update/dist-upgrade this AM in Lu 20.04 and it again errored out . . . .

[CODE] Reading package lists... Done
Building dependency tree
Reading state information... Done
300 packages can be upgraded. Run 'apt list --upgradable' to see them.
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 libqtermwidget5-0 : Depends: qtermwidget5-data (= 0.14.1-3) but 0.14.1-0ubuntu3 is installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution). [/CODE]

This is fixed for an normal upgrade, but if you have previously tried to upgrade (before the fix) and got into a broken state, then you will still need to do some apt/dpkg fix/force type foo to get out of that hole.

@Rik Mills:

Yep, after I ran that and posted it, because previously when I ran "--fix-broken" it didn't fix it so I posted the data . . . I then right-clicked on the "!" applet and "launch package manager" and this time it showed the broken package as being able to "upgrade" . . . so I ran that . . . had some stuff to do, logged out. When I came back I couldn't log back in, went to TTY and ran the fresh upgrade and back into the GUI, seems like we're past this hiccough in the system. : - )