{ fileSystems."/persist".neededForBoot = true; environment.persistence."/persist" = { hideMounts = true; directories = [ "/etc/nixos" "/var/log" "/var/lib/nixos" "/var/lib/systemd/coredump" "/etc/NetworkManager/system-connections" ]; files = [ "/etc/ssh/ssh_host_ed25519_key" "/etc/ssh/ssh_host_ed25519_key.pub" ]; }; }