System set (Portage)
The system set, also referred to as @system in Portage development, contains the software packages required for a standard Gentoo Linux installation to run properly.
The system packages are defined by the Gentoo profiles (through the packages files). An end-user can easily see which packages are seen as part of the system set by running the following emerge command:
emerge --pretend @system
Listing the system set
Various tools can be used to list the system set.
For eix, issue:
eix -c --system