Configuration for my various machines!
{ modulesPath, ... }: 
{
  # Set your system kind (needed for flakes)
  nixpkgs.hostPlatform = "x86_64-linux";
  
  imports = [ (modulesPath + "/profiles/qemu-guest.nix") ];
  boot.loader.grub.device = "/dev/vda";
  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "xen_blkfront" "vmw_pvscsi" ];
  boot.initrd.kernelModules = [ "nvme" ];
  fileSystems."/" = { device = "/dev/vda1"; fsType = "ext4"; };
  swapDevices = [ { device = "/dev/vda2"; } ];
}