Overview
A Python service that exposes Steam account selection as a HomeKit Television accessory on Linux. Each configured Steam user appears as an input, so an automation can select the account for a shared gaming PC.
How it works
The service uses HAP-python to advertise a HomeKit accessory. Selecting an input changes Steam's local AutoLoginUser setting; turning the accessory off restarts Steam so the change takes effect. This does not require Steam's Web API.
It runs as a systemd user service and keeps HomeKit pairing state under ~/.local/state/homekit-steam-user-switcher/.
Features
HomeKit accessory
Steam users appear as inputs on a virtual Television accessory.
Local account selection
Changes Steam's AutoLoginUser setting and restarts the client to apply it.
Linux user service
Runs under systemd in the desktop user's session.
Architecture