Gentoo Package Sets
Gentoo’s package manager Portage has an organizational feature called sets. A set is essentially a named list of packages that you can use to install or update multiple packages at once. There are predefined system sets like @world that contain all packages installed in the system, and it’s also possible to create custom ones, for example for a specific application. This is a very useful feature, because it allows users to easily install uninstall and upgrade packages....