You're correct. It appears I didn't switch sources from Sid to Jessie in time for the unfreezing of the archive.
In case someone else looks for how to fix a situation like this: Using "apt-show-versions | grep newer" you can find out which packages are newer than what your current sources say. After that, see for example "Downgrading to an earlier Debian branch" at http://linuxmafia.com/faq/Debian/downgrade.html for steps to correct the situation. 2015-06-22 20:18 GMT+03:00 Debian Bug Tracking System <ow...@bugs.debian.org >: > This is an automatic notification regarding your Bug report > which was filed against the src:qtcreator package: > > #789576: qtcreator: uninstallable on Jessie, dependency problem > > It has been closed by Lisandro Damián Nicanor Pérez Meyer < > perezme...@gmail.com>. > > Their explanation is attached below along with your original report. > If this explanation is unsatisfactory and you have not received a > better one in a separate message then please contact Lisandro Damián > Nicanor Pérez Meyer <perezme...@gmail.com> by > replying to this email. > > > -- > 789576: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=789576 > Debian Bug Tracking System > Contact ow...@bugs.debian.org with problems > > > ---------- Vidarebefordrat meddelande ---------- > From: "Lisandro Damián Nicanor Pérez" <perezme...@gmail.com> > To: 789576-d...@bugs.debian.org > Cc: > Date: Mon, 22 Jun 2015 14:13:45 -0300 > Subject: Re: Bug#789576: qtcreator: uninstallable on Jessie, dependency > problem > [snip] > > PS. This has very little to do with qtcreator itself, as you can see > > by the packages conflicts. But it also has little to do with Qt5 > > either - you are mixing releases. > > Correct, and as such is not a bug, so I'm closing this one. > > -- > mathematician, n.: > Some one who believes imaginary things appear right before your > i's. > > Lisandro Damián Nicanor Pérez Meyer > http://perezmeyer.com.ar/ > http://perezmeyer.blogspot.com/ > > > ---------- Vidarebefordrat meddelande ---------- > From: "Leonard Norrgård" <leonard.norrg...@gmail.com> > To: Debian Bug Tracking System <sub...@bugs.debian.org> > Cc: > Date: Mon, 22 Jun 2015 12:51:57 +0300 > Subject: qtcreator: uninstallable on Jessie, dependency problem > Source: qtcreator > Version: 3.2.1+dfsg-7 > Severity: grave > Justification: renders package unusable > > Several Qt packages seem to have too specific dependencies: > > # aptitude install qtcreator > The following NEW packages will be installed: > libbotan-1.10-0{a} libqt5clucene5{a} libqt5concurrent5{ab} > libqt5declarative5{a} libqt5designer5{a} libqt5designercomponents5{a} > libqt5help5{a} libqt5qml5{a} libqt5quick5{a} > libqt5quicktest5{a} libqt5quickwidgets5{a} libqt5script5{a} > libqt5sql5{ab} libqt5sql5-sqlite{ab} libqt5webkit5{a} libqt5x11extras5{a} > libqt5xml5{ab} libqt5xmlpatterns5{a} > qml-module-qtquick-controls{a} qml-module-qtquick-layouts{a} > qml-module-qtquick-window2{a} qml-module-qtquick2{a} qt5-doc{a} > qtbase5-dev-tools{ab} qtbase5-doc{a} qtcreator > qtcreator-data{a} qtcreator-doc{a} qtdeclarative5-dev-tools{a} > qtdeclarative5-doc{a} qtenginio5-doc{a} qtgraphicaleffects5-doc{a} > qtmultimedia5-doc{a} qtpositioning5-doc{a} > qtquick1-5-dev-tools{a} qtquickcontrols5-doc{a} qtscript5-doc{a} > qtsensors5-doc{a} qtserialport5-doc{a} qtsvg5-doc{a} qttools5-dev-tools{a} > qttools5-doc{a} qtwebkit5-doc{a} > qtwebkit5-examples-doc{a} qtwebsockets5-doc{a} qtx11extras5-doc{a} > qtxmlpatterns5-dev-tools{a} qtxmlpatterns5-doc{a} > 0 packages upgraded, 48 newly installed, 0 to remove and 0 not upgraded. > Need to get 113 MB of archives. After unpacking 239 MB will be used. > The following packages have unmet dependencies: > libqt5concurrent5 : Depends: libqt5core5a (= 5.3.2+dfsg-4+deb8u1) but > 5.3.2+dfsg-5 is installed. > libqt5sql5-sqlite : Depends: libqt5core5a (= 5.3.2+dfsg-4+deb8u1) but > 5.3.2+dfsg-5 is installed. > qtbase5-dev-tools : Depends: libqt5core5a (= 5.3.2+dfsg-4+deb8u1) but > 5.3.2+dfsg-5 is installed. > Depends: libqt5dbus5 (= 5.3.2+dfsg-4+deb8u1) but > 5.3.2+dfsg-5 is installed. > libqt5sql5 : Depends: libqt5core5a (= 5.3.2+dfsg-4+deb8u1) but > 5.3.2+dfsg-5 is installed. > libqt5xml5 : Depends: libqt5core5a (= 5.3.2+dfsg-4+deb8u1) but > 5.3.2+dfsg-5 is installed. > > > -- System Information: > Debian Release: 8.1 > APT prefers stable > APT policy: (500, 'stable') > Architecture: amd64 (x86_64) > >