Install apt-forktracer by entering the following commands in the terminal:
sudo apt update sudo apt install apt-forktracer
utility for tracking non-official package versions
apt-forktracer tries to alleviate the problem that APT stops tracking official versions of a package after you pin it or install a newer version. . apt-forktracer displays a list of packages which are in an inconsistent state, or whose installed version is different than the newest official one. You can choose to ignore certain packages - if they match certain criteria - using a configuration file.