{ ... }: { sconfig = { profile = "server"; hardware = "qemu"; }; environment.persistence."/nix/persist" = { files = [ "/etc/machine-id" "/etc/ssh/ssh_host_ed25519_key.pub" "/etc/ssh/ssh_host_ed25519_key" "/etc/ssh/ssh_host_rsa_key.pub" "/etc/ssh/ssh_host_rsa_key" ]; directories = [ "/home" "/var/log" ]; }; security.sudo.wheelNeedsPassword = false; boot = { loader.systemd-boot.enable = true; loader.efi.canTouchEfiVariables = true; }; networking = { useDHCP = false; interfaces.enp6s18.ipv4.addresses = [{ address = "10.5.7.160"; prefixLength = 24; }]; defaultGateway = "10.5.7.1"; nameservers = [ "1.1.1.1" ]; }; fileSystems = { "/" = { device = "tmpfs"; fsType = "tmpfs"; options = [ "mode=755" ]; }; "/boot" = { device = "/dev/disk/by-partlabel/_esp"; fsType = "vfat"; options = [ "discard" "noatime" ]; }; "/nix" = { device = "/dev/disk/by-partlabel/_nix"; fsType = "ext4"; options = [ "discard" "noatime" ]; }; }; system.stateVersion = "21.05"; }