add configs for raspi4

systems/raspi-test/default.nix

@@ -0,0 +1,16 @@
+{ config, custom, inputs, pkgs, ... }:
+{
+  imports = [
+    (import "${inputs.self}/systems/raspi4" {
+      hostname = "raspi-test";
+      ip = "10.7.89.99";
+      inherit inputs;
+    })
+    (import "${inputs.self}/modules/restic-server-client" {
+      time = "11:30"; inherit config custom inputs pkgs;
+    })
+    "${inputs.self}/modules/code-server"
+    "${inputs.self}/modules/docker"
+    "${inputs.self}/modules/nix-direnv"
+  ];
+}

systems/raspi4/default.nix

@@ -0,0 +1,24 @@
+{ inputs, hostname, ip, ... }:
+{
+  imports = [
+    (import "${inputs.self}/modules/mk-network" { inherit hostname ip; })
+  ];
+  inputs.nixos-hardware.nixosModules.raspberry-pi-4;
+
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-label/NIXOS_SD";
+      fsType = "ext4";
+      options = [ "noatime" ];
+    };
+  };
+
+  hardware.raspberry-pi."4".fkms-3d.enable = true;
+  hardware.raspberry-pi."4".audio.enable = true;
+  hardware.pulseaudio.enable = true;
+
+  environment.noXlibs = true;
+  documentation.enable = false;
+  documentation.nixos.enable = false;
+  programs.command-not-found.enable = false;
+}