pi-caffeinated-linux

A Linux-only Pi extension that keeps the machine awake with systemd-inhibit.

Features

• /caffeinate keeps the machine awake until the current Pi task settles
• /caffeinate manual keeps it awake until you stop it yourself
• Colored live Pi footer status with a short random coffee quote, for example  [awake] Still brewing · <elapsed>
• Press Esc or run /caffeinate again to stop
• KDE Plasma tray indicator through the StatusNotifierItem D-Bus protocol
• Click the tray indicator or choose Stop keeping awake from its menu
• Cleans up the inhibitor and indicators when Pi shuts down

Requirements

• Pi coding agent extension runtime
• Linux with systemd-inhibit available on PATH
• Node.js 22.12 or newer
• A D-Bus session bus for the optional KDE tray indicator

The extension uses this systemd command:

systemd-inhibit --what=idle:sleep --who=pi-caffeinated \
  --why="Keeping the machine awake from Pi" --mode=block sleep infinity

The idle lock prevents automatic idle handling. The sleep lock prevents user-requested suspend and hibernation. The tray indicator is optional; the Pi status and systemd inhibitor continue to work when no StatusNotifier host is available.

Install

pi install npm:@nimendra/pi-caffeinated-linux@0.0.1

Restart Pi after installing or updating the extension.

Usage

Run the command inside Pi:

/caffeinate          # automatic: stop when the Pi task settles
/caffeinate manual   # manual: stay active until stopped

/caffeinate is also accepted as /caffeinate auto. Automatic mode stops when Pi has finished the agent response, tool calls, retries, compaction, and queued follow-up work. Manual mode remains active until Esc, /caffeinate, the KDE tray indicator, or Pi shutdown stops it.

While active:

• Pi shows a colored status such as  [awake] Still brewing · <elapsed> in the footer. The quote is selected once when the session starts, so it does not flicker every second.
• KDE Plasma shows an active coffee indicator in the system tray when a StatusNotifier host is available.

Stop either mode with Esc, by running /caffeinate again, by clicking the KDE tray indicator, or by choosing Stop keeping awake from its menu.

Diagnostics

List active systemd inhibitors with:

systemd-inhibit --list

Look for an entry with pi-caffeinated and both idle and sleep (the order may appear as sleep:idle). If systemd-inhibit is not found, install the systemd package for your distribution. If the KDE tray indicator is unavailable, check that a user D-Bus session and a Plasma StatusNotifier host are running; the colored Pi footer status remains available without them.

Troubleshooting

Symptom	Check	Action
Footer status does not start	command -v systemd-inhibit	Install systemd or use a systemd-based Linux session.
Inhibitor exits unexpectedly	systemd-inhibit --list	Restart the command and check the reported exit reason.
Stop reports a signal failure	Process permissions and systemd-inhibit --list	End the stale process manually if required, then restart Pi.
Tray is unavailable	echo "$DBUS_SESSION_BUS_ADDRESS"; check the Plasma StatusNotifier host	The footer and inhibitor still work; restore the user D-Bus session for the tray.
Tray registration fails	qdbus6 --session	Check the KDE/freedesktop StatusNotifierWatcher and retry Pi.

Publishing

Releases use npm Trusted Publishing from GitHub Actions. The package trusts repository nmdra/pi-caffeinated-linux and workflow .github/workflows/release.yml; no npm token is stored in GitHub. The publish job requests id-token: write and runs npm publish --provenance --access public with npm 11.15 or newer.

To configure or inspect the connection as the package owner:

npm trust github @nimendra/pi-caffeinated-linux \
  --repo nmdra/pi-caffeinated-linux \
  --file release.yml \
  --allow-publish
npm trust list @nimendra/pi-caffeinated-linux

If a connection must be replaced, list its ID, revoke it, and create the new connection before merging a release PR.

License

MIT