{ lib, config, pkgs, ... }: {
  imports = [
    ./disks.nix
    ./options.nix
  ];

  nixpkgs = {
    hostPlatform = "x86_64-linux";
  };

  networking = {
    hostName = "tunyon";
  };

  boot = {
    initrd = {
      availableKernelModules = [ "nvme" "xhci_pci" "thunderbolt" ];
      luks.devices.root.device = "/dev/disk/by-uuid/${config.disks.crypt}";
      postDeviceCommands = lib.mkAfter ''
        mkdir /btrfs_tmp
        mount /dev/disk/by-uuid/${config.disks.root} /btrfs_tmp
        if [[ -e /btrfs_tmp/root ]]; then
            mkdir -p /btrfs_tmp/old_roots
            timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:%M:%S")
            mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
        fi

        delete_subvolume_recursively() {
            IFS=$'\n'
            for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
                delete_subvolume_recursively "/btrfs_tmp/$i"
            done
            btrfs subvolume delete "$1"
        }

        for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
            delete_subvolume_recursively "$i"
        done

        btrfs subvolume create /btrfs_tmp/root
        umount /btrfs_tmp
      '';
    };

    kernelModules = [ "kvm-amd" ];
    kernelPackages = pkgs.linuxPackages_zen;

    loader = {
      systemd-boot = {
        enable = true;
      };
      efi.canTouchEfiVariables = true;
    };
  };

  fileSystems = {
    "/boot" = {
      device = "/dev/disk/by-uuid/${config.disks.boot}";
      fsType = "vfat";
    };
    "/" = {
      device = "/dev/disk/by-uuid/${config.disks.root}";
      fsType = "btrfs";
      options = [ "subvol=root" "compress=zstd" "noatime" ];
    };
    "/nix" = {
      device = "/dev/disk/by-uuid/${config.disks.root}";
      fsType = "btrfs";
      options = [ "subvol=nix" "compress=zstd" "noatime" ];
      neededForBoot = true;
    };
    "/persist" = {
      device = "/dev/disk/by-uuid/${config.disks.root}";
      fsType = "btrfs";
      options = [ "subvol=persist" "compress=zstd" "noatime" ];
      neededForBoot = true;
    };
    "/swap" = {
      device = "/dev/disk/by-uuid/${config.disks.root}";
      fsType = "btrfs";
      options = [ "subvol=swap" "noatime" ];
    };
  };
  swapDevices = [ { device = "/swap/swapfile"; } ];

  services = {
    upower.enable = true;
    fwupd.enable = true;
    power-profiles-daemon.enable = true;
  };

  hardware = {
    enableRedistributableFirmware = true;
    enableAllFirmware = true;
    cpu.amd.updateMicrocode = true;

    graphics = {
      enable = true;
      enable32Bit = true;
    };
  };
}