Out-of-the-Box Experience

Out-of-the-Box Experience is a setup process before a login manager where a new computer can be configured instead of doing it during install.

Installation

Install the gnome-initial-setup package for GDM or plasma-setup-git^AUR for plasma-login-manager. Additionally cosmic-initial-setup can be installed for the COSMIC desktop environment.

Configuration

Gnome Initial Setup

First enable GDM. Initial Setup uses GDM to run. Ensure that the system has no user accounts. GDM will detect the absence of users on boot and launch gnome-initial-setup.

Plasma Setup

Enable plasma-setup.service. Next time the computer is booted it will run the setup to create a new user, set system locale and set the theme. After finishing it will create /etc/plasma-setup-done to signify that the setup has run.

Cosmic Initial Setup

To use Cosmic Initial Setup, simply install it and it will run after the next login. The downside of this is that it can't be used to set up new users.

systemd-firstboot

See systemd-firstboot.