Niri session startup

Start SYSC with Niri

SYSC installs systemd user units that require graphical-session.target. Start Niri through niri-session so the session manager exposes the Wayland and Niri environment and activates that target.

The installer distinguishes an enabled unit from a running unit:

• From SSH or a TTY, it enables the suite units but does not start them.
• In a live Niri session with graphical-session.target active, it enables and starts the selected units.
• A live Niri session started with plain niri can lack graphical-session.target. In that case, SYSC leaves the shell startup line in place and reports that the user units did not start.

Check the target from the same user session:

systemctl --user is-active graphical-session.target
systemctl --user --no-pager status sysc-shell.service

The first command should report active. A unit that requires the target cannot start before that session is available. Do not add sudo to systemctl --user. For a failed unit, use the read-only checks in troubleshooting services.

The installer preserves the existing Niri config, adds an include for its generated sysc.kdl sidecar, and may comment an existing sysc-shell spawn line to prevent duplicate startup. The sidecar is SYSC-owned and gets rewritten on an installer rerun. See paths and ownership.