{ lib, system, ... }:

{
  boot = {
    # use latest kernel
    # kernelPackages = pkgs.linuxPackages_latest;
    supportedFilesystems = [ "ext4" "btrfs" "xfs" "fat" "vfat" "cifs" "nfs" ];
    growPartition = true;
    kernelModules = [ "kvm-intel" ];
    kernelParams = lib.mkForce [ ];

    loader = {
      grub = {
        enable = true;
        device = "nodev";
        efiSupport = true;
        efiInstallAsRemovable = true;
      };
      timeout = lib.mkForce 3;
    };

    initrd = {
      availableKernelModules = [ "9p" "9pnet_virtio" "ata_piix" "uhci_hcd" "virtio_blk" "virtio_mmio" "virtio_net" "virtio_pci" "virtio_scsi" ];
      kernelModules = [ "virtio_balloon" "virtio_console" "virtio_rng" ];
    };

    tmp.cleanOnBoot = true;
  };

  fileSystems = {
    "/" = {
      device = "/dev/disk/by-label/nixos";
      autoResize = true;
      fsType = "ext4";
    };

    "/boot" = {
      device = "/dev/disk/by-label/ESP";
      fsType = "vfat";
    };

    "/var/lib/microvms" = {
      device = "/dev/vdb1";
      fsType = "ext4";
    };
  };


  services.fstrim = {
    enable = true;
    interval = "weekly";
  };

  nixpkgs.hostPlatform = lib.mkDefault system;
}