gdm3 was desinstalled by installing other packages. I cannot reinstall it:# apt-get install gdm3Reading package lists...Building dependency tree...Reading state information...Some packages could not be installed. This may mean that you haverequested an impossible situation or if you are using the unstabledistribution that some required packages have not yet been createdor been moved out of Incoming.The following information may help to resolve the situation:The following packages have unmet dependencies: gdm3 : Depends: libgdm1 (= 3.14.1-7) but it is not going to be installed        Depends: gir1.2-gdm3 (= 3.14.1-7) but it is not going to be installed        Depends: gnome-settings-daemon (>= 3.2) but it is not going to be installed        Depends: gnome-shell (>= 3.10.1-2~) but it is not going to be installedI have already tried the apt-get install -f flag without success.What should I do to reinstall gdm3?
Cannot install gdm3: unmet dependencies
debian;package management;dpkg;display manager