@BroBot9000 cool. Thanks @alt for the link to Jovian, this might an opportunity to tinker with NixOS... Do you know how nvidia cards is supported ? (nouveau driver is ok for my kind of use).
@flashgnash thanks for reminding me the Pop_OS option... do you know if you can configure Steam to start on big picture mode to start on boot ?
@alt thanks for the reply. I might try this at some point. https://nixos.wiki/wiki/Nvidia seems to indicate some support.