Long time ago I stopped using KDE, because they started going insane.
Two days ago upgraded to Buster and now wanted to check if all works fine. One of the things I need to use is qdbusviewer - unfortunately there is no acceptable alternative. Now I spend already one hour because of the stupidity and madness of the way KDE decided to do configuration $ qdbusviewer qdbusviewer: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qdbusviewer': No such file or directory Not the only one - I tried this https://askubuntu.com/questions/435564/qt5-installation-and-path-configuration # cd /usr/lib/x86_64-linux-gnu/qtchooser/ # ls -al total 132 drwxr-xr-x 2 root root 4096 Nov 3 08:28 . drwxr-xr-x 101 root root 126976 Nov 3 08:28 .. lrwxrwxrwx 1 root root 50 May 3 2019 4.conf -> ../../../share/qtchooser/qt4-x86_64-linux-gnu.conf lrwxrwxrwx 1 root root 50 May 3 2019 5.conf -> ../../../share/qtchooser/qt5-x86_64-linux-gnu.conf lrwxrwxrwx 1 root root 50 May 3 2019 qt4.conf -> ../../../share/qtchooser/qt4-x86_64-linux-gnu.conf lrwxrwxrwx 1 root root 50 May 3 2019 qt5.conf -> ../../../share/qtchooser/qt5-x86_64-linux-gnu.conf # ln -s qt5.conf default.conf $ qdbusviewer qdbusviewer: could not exec '/usr/lib/qt5/bin/qdbusviewer': No such file or directory # ls -al /usr/lib/qt5/bin/ ls: cannot access '/usr/lib/qt5/bin/': No such file or directory I am sorry to say it, but to me it looks like KDE is playing dumb and dumber. I wonder which is worse systemd or KDE - they seem to share common concepts in doing things How I solved it? Install qt from scratch and put it in my path - relieve! If someone has a better solution let me know.