I also have my dotfiles in portable repositories that must work on a variety of unices (so I don't use the popular-but-nix-specific home-manager package). My cu

I also have my dotfiles in portable repositories that must work on a variety of unices (so I don't use the popular-but-nix-specific home-manager package). My custom ISO has no user data, it just creates my immutable account with my public SSH key (in case I need to remote into the machine immediately) and has a global alias named "bootstrap" that fetches and installs my dotfiles. After that, I can pull any updates made on other machines, log in and out of the DM, etc. until I turn off the computer. I've gone weeks on the same session in RAM (waking from sleep works fine on most machines).