My steam deck has been my main dev pc for a year now. Also serves Qwen 3.5 9B when I use my MacBook Air. Distrobox prevents OS updates from clobbering my environment.
The version before this broke fullscreen when I updated to the Wayland stable branch so I had to revert to X11 SteamOS.
There is a command you can run to make the old boot partition the main partition again so reverting the update holds after reboot. Wish they built the command into the GUI.