How to force-reinstall the Armbian desktop environment the way armbian-config did?

[linuxfan]

I installed the Armbian desktop environment via armbian-config. Then I disabled it, and I saw that many of the packages were uninstalled by my next "apt upgrade". I want to install them again, but armbian-config only lets me "enable" or "disable" the Desktop now. It won't install anything anymore. So my question is how do I redo what armbian-config did during the first time, to reinstall all Armbian desktop files?

[Werner]

armbian-config was not designed to noticed if somebody messes with the packages by hand.

For first clues I suggest to check the source of the script and repeat the steps taken: https://github.com/armbian/config/search?q=desktop