Add new host "fern"

hosts/fern/hardware.nix

@@ -0,0 +1,31 @@
+{ inputs, ... }:
+{
+  imports = [ inputs.disko.nixosModules.default ];
+
+  nixpkgs.hostPlatform = "x86_64-linux";
+
+  hardware = {
+    enableRedistributableFirmware = true;
+    cpu.amd.updateMicrocode = true;
+  };
+
+  boot = {
+    kernelModules = [ "kvm-amd" ];
+    initrd.availableKernelModules = [
+      "nvme"
+      "xhci_pci"
+      "thunderbolt"
+      "usb_storage"
+      "sd_mod"
+    ];
+  };
+
+  services = {
+    fwupd.enable = true;
+    logind.lidSwitch = "ignore";
+    upower = {
+      enable = true;
+      criticalPowerAction = "Hibernate";
+    };
+  };
+}