~ $ sudo apt install plasma-desktop
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
plasma-desktop : Depends: plasma-workspace but it is not going to be installed
Recommends: kde-config-screenlocker but it is not going to be installed
Recommends: kinfocenter but it is not going to be installed
Recommends: kwin-x11 but it is not going to be installed or
kwin
E: Unable to correct problems, you have held broken packages.
~ $ sudo apt install plasma-workspace
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
plasma-workspace : Depends: libkscreenlocker5 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
~ $ sudo apt install libkscreenlocker5
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
libkscreenlocker5 : Depends: libkf5waylandserver5 (>= 4:5.6.2) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
~ $ sudo apt install libkf5waylandserver5
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
libkf5waylandserver5 : Depends: kwayland-data (= 4:5.31.0-0ubuntu1) but 4:5.34.0-0ubuntu1~ubuntu16.04~ppa1 is to be installed
E: Unable to correct problems, you have held broken packages.
~ $ sudo apt install kwayland-data
Reading package lists... Done
Building dependency tree
Reading state information... Done
kwayland-data is already the newest version (4:5.34.0-0ubuntu1~ubuntu16.04~ppa1).
kwayland-data set to manually installed.
0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.