x220: Add host

Probably broken right now.

hosts/x220/default.nix

@@ -0,0 +1,49 @@
+{ pkgs, lib, username, ... }:
+
+{
+  imports = [
+    ./disko.nix
+    ./packages.nix
+  ];
+
+  time.timeZone = "Europe/Berlin";
+
+  networking = {
+    hostName = "x220";
+    useDHCP = lib.mkDefault true;
+  };
+
+  boot = {
+    loader = {
+      efi.canTouchEfiVariables = true;
+      grub = {
+        enable = true;
+        # device = "/dev/sda"; # [managed by install.sh]
+        gfxmodeEfi = "1366x768";
+      };
+    };
+
+    tmp.useTmpfs = true;
+    kernelPackages = pkgs.unstable.linuxPackages_xanmod_latest;
+    supportedFilesystems = [ "btfs" "vfat" "xfs" ];
+    initrd = {
+      availableKernelModules = [ "ehci_pci" "ahci" "xhci_pci"
+                                 "usb_storage" "sd_mod" "sdhci_pci" ];
+    };
+  };
+
+  services = {
+    fstrim.enable = true;
+    btrfs.autoScrub.enable = true;
+  };
+
+  fileSystems = {
+    # These are system specific. If you have any additional drives that are not
+    # your root device you can add and mount them here. Added nofail so that you can
+    # install this configuration on a device without it exploding when you don't have
+    # these specific partitions.
+  };
+
+  system.stateVersion = "24.11"; # [managed by install.sh] { state version }
+}
+