I know how to uninstall an application I no longer want with pacman or yaourt, but how do I remove dependencies that were installed by apps that are no longer needed?
For example, today I installed flowblade, but found it segfaulted when trying to run it. It’s not something I need, I was just playing around. So, I uninstalled it. But during the install, a lot of dependencies were installed as well. I’d like to purge them too, so I assume there is a command to automatically purge unneeded dependencies?