Handbook:Parts/Blocks/Systemd/en

Optional: Using systemd as the init system
The remainder of the Gentoo Handbook focuses on OpenRC as the default init support system. If systemd is wanted instead, or you are planning to use Gnome 3.8 and later (which requires systemd), please consult the systemd page as it elaborates on the different configuration settings and methods.

Note: Certain applications are heavily dependent on the Gnome software ecosystem and subsequently dependent on systemd. Readers who are unsure if the GNOME desktop environment will be used can migrate to a systemd profile later.