Comment 4 for bug 841696

Cheers, I don't know much about debian packages and that link helped.

A list of "Add-ons" is displayed on the LibreOffice Writer page in the Ubuntu Software Centre, but libreoffice-gtk isn't actually visible in that list.

I believe it should be automatically installed somehow, because even if it was in that list, it isn't a good user experience when you put the Ubuntu Software Centre into the context of an "App Store", and I would consider integration into the user's desktop environment as a basic feature, not an optional extra. All software should respect the user's DPI and colour settings for example as it could adversely affect the software's accessibility for people with sight problems.

Can the Ubuntu Software Centre itself decide which desktop integration package to install depending on the desktop environments that the user has installed?

Or could libreoffice-gnome, libreoffice-kde and libreoffice-gtk all be rolled into one package (depended on by the base LibreOffice package) that does not itself depend on all three desktops being installed (to prevent KDE being installed in my case), and then find out which one to use at runtime?