dpkg: error processing archive /var/cache/apt/archives/sddm_0.1.0~git20140624-0ubuntu1~ubuntu14.10~ppa1_amd64.deb (--unpack):
 trying to overwrite '/etc/dbus-1/system.d/org.freedesktop.DisplayManager.conf', which is also in package lightdm 1.11.4-0ubuntu1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/sddm_0.1.0~git20140624-0ubuntu1~ubuntu14.10~ppa1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)