✨ [pi4] Split module config

hosts/pi4/default.nix

@@ -1,45 +1,15 @@
 {
-  pkgs,
   systemConfig,
   ...
 }:
 
 {
-  boot = {
-    kernelPackages = pkgs.linuxKernel.packages.linux_rpi4;
-    initrd.availableKernelModules = [
-      "xhci_pci"
-      "usbhid"
-      "usb_storage"
-    ];
-    loader = {
-      grub.enable = false;
-      generic-extlinux-compatible.enable = true;
-    };
-  };
-
-  fileSystems = {
-    "/" = {
-      device = "/dev/disk/by-label/NIXOS_SD";
-      fsType = "ext4";
-      options = [ "noatime" ];
-    };
-  };
-
-  hardware.enableRedistributableFirmware = true;
-
-  networking = {
-    hostName = systemConfig.hostName;
-    networkmanager.enable = true;
-  };
-
-  services.openssh.enable = true;
-
-  programs.gnupg.agent = {
-    enable = true;
-    enableSSHSupport = true;
-  };
-  services.pcscd.enable = true;
+  imports = [
+    ./boot.nix
+    ./hardware.nix
+    ./networking.nix
+    ./security.nix
+  ];
 
   system.stateVersion = systemConfig.version;