{
  config,
  pkgs,
  vars,
  ...
}: {
  boot.extraModprobeConfig = ''
    options kvm_intel nested=1
  '';

  users.groups.libvirtd.members = ["root" "${vars.user}"];

  virtualisation = {
    libvirtd = {
      enable = true;
      qemu = {
        verbatimConfig = ''
          nvram = [ "${pkgs.OVMF}/FV/OVMF.fd:${pkgs.OVMF}/FV/OVMF_VARS.fd" ]
        '';
        swtpm.enable = true;
      };
    };
    spiceUSBRedirection.enable = true;
  };

  environment = {
    systemPackages = with pkgs; [
      virt-manager # VM Interface
      virt-viewer # Remote VM
      qemu # Virtualizer
      OVMF # UEFI Firmware
      gvfs # Shared Directory
      swtpm # TPM
      virglrenderer # Virtual OpenGL
    ];
  };

  services = {
    # File Sharing
    gvfs.enable = true;
  };
}