Could it be that something is wrong with Qt's t64 packages? Shouldn't they replace the non-t64 ones?
$ sudo dpkg -i libqt5widgets5t64_5.15.12+dfsg-3ubuntu6_amd64.deb Selecting previously unselected package libqt5widgets5t64:amd64. dpkg: regarding libqt5widgets5t64_5.15.12+dfsg-3ubuntu6_amd64.deb containing libqt5widgets5t64:amd64: libqt5widgets5t64 breaks libqt5widgets5 (<< 5.15.12+dfsg-3ubuntu6) libqt5widgets5:amd64 (version 5.15.12+dfsg-3ubuntu1) is present and installed. dpkg: error processing archive libqt5widgets5t64_5.15.12+dfsg-3ubuntu6_amd64.deb (--install): installing libqt5widgets5t64:amd64 would break libqt5widgets5:amd64, and deconfiguration is not permitted (--auto-deconfigure might help) Errors were encountered while processing: libqt5widgets5t64_5.15.12+dfsg-3ubuntu6_amd64.deb -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtbase-opensource-src in Ubuntu. https://bugs.launchpad.net/bugs/2060102 Title: apt dist-upgrade uninstalls quassel-client Status in qtbase-opensource-src package in Ubuntu: New Status in quassel package in Ubuntu: New Bug description: Trying to run dist-upgrade asks for uninstalling quassel-client on amd64. This is related to some unfullfillable dependencies: The following packages have unmet dependencies: quassel-client : Depends: libqt5core5t64 (>= 5.15.1) but it is not installable Depends: libqt5dbus5t64 (>= 5.14.1) but it is not installable Depends: libqt5gui5t64 (>= 5.14.1) but it is not installable or libqt5gui5-gles (>= 5.14.1) but it is not installed Depends: libqt5network5t64 (>= 5.15.1) but it is not installable Depends: libqt5widgets5t64 (>= 5.14.1) but it is not installable $ sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree... Done Reading state information... Done Calculating upgrade... Done The following packages will be REMOVED: quassel-client The following packages have been kept back: 2to3 alsa-ucm-conf apache2-data breeze-cursor-theme debconf-kde-data exim4 gnupg gnupg-agent gvfs-common hplip-data hplip-gui kde-cli-tools-data khotkeys-data kio-extras-data ktexteditor-data kubuntu-desktop kwayland-data kwin-data libavahi-client3:i386 libavahi-common-data:i386 libavahi-common3:i386 libblkid1:i386 libcairo-gobject2:i386 libcairo2:i386 libcanberra-gtk-module:i386 libcanberra-gtk0:i386 libcom-err2:i386 libdbus-1-3:i386 libfreetype6:i386 libgail-common:i386 libgdk-pixbuf-2.0-0:i386 libgl1-mesa-dri:i386 libglapi-mesa:i386 libglx-mesa0:i386 libgssapi-krb5-2:i386 libharfbuzz0b:i386 libk5crypto3:i386 libkf5bluezqt-data libkf5contacts-data libkf5declarative-data libkf5dnssd-data libkf5filemetadata-data libkf5holidays-data libkf5kcmutils-data libkf5kdelibs4support-data libkf5khtml-data libkf5notifyconfig-data libkf5package-data libkf5parts-data libkf5people-data libkf5pty-data libkf5sane-data libkf5screen-bin libkf5screen-data libkf5screen8 libkf5screendpms8 libkf5sonnet5-data libkf5su-data libkf5syntaxhighlighting-data libkf5sysguard-bin libkf5sysguard-data libkimageannotator-common libkpim5gapi-data libkrb5-3:i386 libkrb5support0:i386 libksgrd9 libksysguardformatter1 libksysguardsensorfaces1 libksysguardsensors1 libksysguardsystemstats1 libmount1:i386 libnsl2:i386 libnss-nisplus:i386 libnvidia-compute-535:i386 libnvidia-decode-535:i386 libnvidia-encode-535:i386 libnvidia-fbc1-535:i386 libnvidia-gl-535:i386 libpango-1.0-0:i386 libpangocairo-1.0-0:i386 libpangoft2-1.0-0:i386 libprocesscore9 libprocessui9 libqt6webengine6-data librsvg2-2:i386 librsvg2-common:i386 libsane-common libselinux1 libselinux1:i386 libselinux1-dev libsharpyuv0:i386 libsystemd0:i386 libuuid1:i386 libvirt-daemon-config-network libvirt-daemon-config-nwfilter libvirt-daemon-system-systemd libvirt-l10n libvolume-key1 libwebp7:i386 libzvbi-common mesa-vulkan-drivers:i386 plasma-desktop-data plasma-discover-common powerdevil-data python3-magic qml-module-org-kde-ksysguard samba-common ubuntu-advantage-tools vim vim-common vim-runtime vim-tiny zlib1g:i386 The following packages will be upgraded: quassel-data 1 upgraded, 0 newly installed, 1 to remove and 113 not upgraded. Need to get 0 B/866 kB of archives. After this operation, 4.382 kB disk space will be freed. Do you want to continue? [Y/n] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/2060102/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp