Kf5 and qt5 residues in KDE Neon

Help
1

As I’m a sort of fan of lean&clean system (only minimal set of packages to run plasma6 wayland session) , then my attention caught tens of kf5 and qt5 packages in default KDE Neon live iso and corresponding Neon install.

Getting rid of kf5 was easy: “sudo apt remove –autoremove libkf5*” and the Plasma DE continued to run OK

It was little bit more difficult with qt5 packages - “sudo apt remove libqt5*” removed also the plasma DE, but it was easy to get it back by: “sudo apt install --no-install-recommends plasma-desktop plasma-workspace-wayland plasma-nm plasma-pa”.

This also installed as a requirements five qt 5.15.17 packages: libqt5core5t64; libqt5dbus5t64; libqt5gui5t64; libqt5network5t64; libqt5widgets5t64.

As their qt6 counterparts are available, then are the qt5 ones still required? And less packages, smaller iso image, less network traffic, less used electric energy, greener planet… :smiley: If somebody needs older software, then it just pulls in all the needed requirements…

2

There is probably some small piece in the stack that is not ported to KF6 yet. It could be kio-fuse. While that has been fixed in the meantime, I think the latest release might still be built with Qt5 by default.

3

plasma-integration needs Qt5/KF5 support to make Qt5 apps use Breeze, so it’s a required dependency.

4

At least in other distributions, this is split into two packages though. I’m not sure that explains it.