[teeedubb]

I have a setup where Kodi boots without a desktop environment and I launch xfce when I need to launch steam, attract mode, web browser, basically any thing that requires a desktop environment. All this is done through scripting and doesn't require anything from the user except for launching the addon. When the application is exited, xfce closes and kodi re-launches. I use the pre-launch script in the steam launcher addon to place a temp file on my hdd and close kodi. The script that launches everything runs in a loop and at the start it checks for temp files, if it finds one for steam it launches xfce. I have a script that autostarts with xfce and also checks for temp files. If it finds the one for steam, it launches steam, waits for it to close, then deletes the temp file and exits xfce. I use different temp files for different applications that I want launched. The script that launches everything then runs again and because there are no temp files it boots back into kodi. Works well for me and gives me the best of both worlds.

As for the steam compositor, I have not used it for many years so I cant really give you any info on it. Last time I used it, it was available for Ubuntu via a third party PPA.