added sanddorn config

hosts/sanddorn/configuration.nix

@@ -0,0 +1,42 @@
+{ config, lib, pkgs, ... }:
+{
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
+  boot = {
+    loader = {
+      grub.enable = false;
+      raspberryPi = {
+        enable = true;
+        version = 3;
+        uboot.enable = true;
+      };
+    };
+    kernelPackages = pkgs.linuxPackages_latest;
+    # No ZFS on latest kernel:
+    tmpOnTmpfs = true;
+  };
+
+  networking = {
+    hostName = "sanddorn";
+
+    useDHCP = false;
+    interfaces.eth0.useDHCP = true;
+    interfaces.wlan0.useDHCP = true;
+    firewall.enable = false;
+  };
+
+  # Do not log to flash:
+  services.journald.extraConfig = ''
+    Storage=volatile
+  '';
+
+  security.sudo = {
+    enable = true;
+    wheelNeedsPassword = false;
+  };
+
+  system.stateVersion = "21.11"; 
+}
+