When I try to install unity-tweak-tool I get this message
The following packages have unmet dependencies:
unity-tweak-tool : Depends: unity-webapps-common but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
Then I tried to install unity-webapps-common and I got this:
The following packages have unmet dependencies:
unity-webapps-common : Depends: unity-webapps-service (>= 2.3.8-0ubuntu3) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
Then I tried to install unity-webapps-service and I got this:
The following packages have unmet dependencies:
unity-webapps-service : Depends: webapp-container
E: Unable to correct problems, you have held broken packages.
And when I try to install webapp-container I get stuck at this:
The following packages have unmet dependencies:
webapp-container : Depends: qtbase-abi-5-5-1
Depends: qtdeclarative-abi-5-5-0
Depends: liboxideqt-qmlplugin (>= 1.8) but it is not going to be installed
Depends: qml-module-ubuntu-web (= 0.23+16.04.20161028-0ubuntu2) but it is not going to be installed
Depends: qtdeclarative5-ubuntu-ui-toolkit-plugin (>= 1.3) or
qtdeclarative5-ubuntu-ui-toolkit-plugin-gles (>= 1.3) but it is not going to be installed
Depends: unity-webapps-qml but it is not going to be installed
Depends: webbrowser-app (= 0.23+16.04.20161028-0ubuntu2)
E: Unable to correct problems, you have held broken packages.
I really can't figure out this last one. What is the problem here?