nixos-config/machines/vm2/hardware-configuration.nix

{ modulesPath, ... }: {
  imports = [
    (modulesPath + "/profiles/qemu-guest.nix")
  ];

  boot.initrd.availableKernelModules = [ "ahci" "xhci_pci" "virtio_pci" "sr_mod" "virtio_blk" ];
  boot.initrd.kernelModules = [ "kvm-amd" ];
  boot.kernelModules = [ "kvm-amd" ];
  boot.extraModulePackages = [ ];

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

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

  swapDevices = [{ device = "/dev/disk/by-label/swap"; }];
}