This project is not affiliated with Valve (wide inspiration was taken from their work on the SteamDeck). This configuration depends on gamescope-session from the ChimeraOS project.
Copy this repository file structure into the appropriate places and you'll be able to start the session on any Display Manager of your choice.
The session sources environment from ~/.config/environment.d/*.conf and
~/.config/gamescope-session-plus/sessions.d/steam-plus files.
The easiest way to configure the session is to create
~/.config/gamescope-session-plus/sessions.d/steam-plus and set variables there:
# Override entire OpenGamepadUI command line
CLIENTCMD="opengamepadui --overlay-mode -- steam"
Refer to the gamescope-session README for more information about overriding configuration.
The project is licensed under GPL v3 license. If you want to contribute, just do so and thank you.