How to run Plasma Discover on Ubuntu 18.04 LTS (not Kubuntu)?

Solution 1:

I reported bug 1788863 about missed dependencies.

Afterwards I visited packages.ubuntu.com and found necessary dependency - package qml-module-qtquick-controls.

Installation of it with

sudo apt-get install qml-module-qtquick-controls

But this is not enough, here is other error message:

qrc:/qml/ReviewDialog.qml:3 module "QtQuick.Dialogs" is not installed

so we need to install other package

sudo apt-get install qml-module-qtquick-dialogs

fixes the problem - Plasma Discover starts and works normally:

During its operation it was discovered that it needs kded_kcookiejar from kdelibs5-plugins package.

So the complete command to use Plasma Discover is:

sudo apt-get install plasma-discover \
plasma-discover-flatpak-backend plasma-discover-snap-backend \
qml-module-qtquick-controls qml-module-qtquick-dialogs kdelibs5-plugins

Note: this method is actual for Ubuntu 18.04 LTS with GNOME Shell too.