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{
  config,
  inputs,
  ...
}: {
  # external defaults
  imports = [
    inputs.nixos-hardware.nixosModules.lenovo-thinkpad-x1-7th-gen
  ];

  # bootloader
  boot.loader = {
    efi.canTouchEfiVariables = true;
    grub = {
      enable = true;
      efiSupport = true;
      device = "nodev";
      splashImage = config.theme.wallpaper;
    };
  };

  # kernel modules
  boot.initrd.availableKernelModules = ["xhci_pci" "nvme" "usb_storage" "sd_mod"];
  boot.initrd.kernelModules = [];
  boot.kernelModules = ["kvm-intel"];
  boot.extraModulePackages = [];

  # firmware
  hardware.enableRedistributableFirmware = true;
  hardware.cpu.intel.updateMicrocode = true;

  # luks device
  boot.initrd.luks.devices."root".device = "/dev/disk/by-uuid/b94c88f4-a74e-42b6-b525-d69dc70cbe09";
  boot.initrd.luks.devices."swap".device = "/dev/disk/by-uuid/61866c6a-da39-4a0e-97aa-1437e8827621";

  # root
  fileSystems."/" = {
    device = "/dev/disk/by-uuid/71e9cd8e-1f62-4587-bcfe-9ee74eb25d53";
    fsType = "btrfs";
  };

  # boot
  fileSystems."/boot" = {
    device = "/dev/disk/by-uuid/5116-3132";
    fsType = "vfat";
    options = ["fmask=0022" "dmask=0022"];
  };

  # swap
  swapDevices = [
    {device = "/dev/disk/by-uuid/8e876b25-899d-40ea-b9e5-764a38d818b7";}
  ];
}