Calls tracer after every successful transaction. It finds running applications which are outdated by transaction's packages.
There you can see DNF output with dnf-plugins-extras-tracer installed:
$[FrostyX ~]-> sudo dnf update vim-X11 ... Running transaction Upgrading : vim-common-2:7.4.179-1.fc20.i686 1/6 Upgrading : vim-X11-2:7.4.179-1.fc20.i686 2/6 Upgrading : vim-enhanced-2:7.4.179-1.fc20.i686 3/6 ... Upgraded: vim-X11.i686 2:7.4.179-1.fc20 vim-common.i686 2:7.4.179-1.fc20 vim-enhanced.i686 2:7.4.179-1.fc20 You should restart: gvim Done!
It is a good idea to restart those applications, because they can be potentially dangerous. They can contain old security issues, which are fixed in new version.
See AUTHORS in your Extras DNF Plugins distribution
2021, Igor Gnatenko, Licensed under GPLv2+