That doesn't help for me.
# apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following NEW packages will be installed:
kde-style-qtcurve-qt5
The following packages will be upgraded:
gtk2-engines-qtcurve qtcurve qtcurve-l10n
3 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/620 kB of archives.
After this operation, 1,256 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Reading changelogs... Done
(Reading database ... 294724 files and directories currently installed.)
Preparing to unpack .../kde-style-qtcurve-qt5_1.8.18+git20150711-a3fff13-4_amd64.deb ...
Unpacking kde-style-qtcurve-qt5:amd64 (1.8.18+git20150711-a3fff13-4) ...
dpkg: error processing archive /var/cache/apt/archives/kde-style-qtcurve-qt5_1.8.18+git20150711-a3fff13-4_amd
64.deb (--unpack):
trying to overwrite '/usr/lib/x86_64-linux-gnu/qt5/plugins/styles/qtcurve.so', which is also in package kde-
style-qtcurve5 1.8.18+git20140721-siduction1.7
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Preparing to unpack .../qtcurve_1.8.18+git20150711-a3fff13-4_amd64.deb ...
Unpacking qtcurve (1.8.18+git20150711-a3fff13-4) over (1.8.18+git20140721-siduction1.7) ...
Preparing to unpack .../qtcurve-l10n_1.8.18+git20150711-a3fff13-4_all.deb ...
Unpacking qtcurve-l10n (1.8.18+git20150711-a3fff13-4) over (1.8.18+git20140721-siduction1.7) ...
Preparing to unpack .../gtk2-engines-qtcurve_1.8.18+git20150711-a3fff13-4_amd64.deb ...
Unpacking gtk2-engines-qtcurve:amd64 (1.8.18+git20150711-a3fff13-4) over (1.8.18+git20140721-siduction1.7) ..
.
dpkg: error processing archive /var/cache/apt/archives/gtk2-engines-qtcurve_1.8.18+git20150711-a3fff13-4_amd6
4.deb (--unpack):
trying to overwrite '/usr/share/themes/QtCurve/mozilla/QtCurve.css', which is also in package kde-style-qtcu
rve4 1.8.18+git20140721-siduction1.7
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/kde-style-qtcurve-qt5_1.8.18+git20150711-a3fff13-4_amd64.deb
/var/cache/apt/archives/gtk2-engines-qtcurve_1.8.18+git20150711-a3fff13-4_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
# apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
kde-style-qtcurve-qt5
The following NEW packages will be installed:
kde-style-qtcurve-qt5
0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
2 not fully installed or removed.
Need to get 0 B/346 kB of archives.
After this operation, 1,159 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database ... 294724 files and directories currently installed.)
Preparing to unpack .../kde-style-qtcurve-qt5_1.8.18+git20150711-a3fff13-4_amd64.deb ...
Unpacking kde-style-qtcurve-qt5:amd64 (1.8.18+git20150711-a3fff13-4) ...
dpkg: error processing archive /var/cache/apt/archives/kde-style-qtcurve-qt5_1.8.18+git20150711-a3fff13-4_amd
64.deb (--unpack):
trying to overwrite '/usr/lib/x86_64-linux-gnu/qt5/plugins/styles/qtcurve.so', which is also in package kde-
style-qtcurve5 1.8.18+git20140721-siduction1.7
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/kde-style-qtcurve-qt5_1.8.18+git20150711-a3fff13-4_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)