Mergerfs is kind of the gold standard herr but i dont think it is winfows

This except I use a cheap intel n150/n100 mini pice (aoostar n1 pro ftw currently) to run bazzite to autologin to kde and launch jellyfin media player.

maybe 19 years since they came out as transpuppygirl at the age of 27?

I did similar https://github.com/zombiehoffa/hyprjellynix

Edit I tried your way and it works better but is slightly more annoying to setup than running a nixos update (but only slightly more and making the nixos config file was a pain in the arse).