{ config, lib, pkgs, ... }:
{
  options.szpont.virtualization = {
    enable = lib.mkOption {
      type = lib.types.bool;
      default = false;
    };

    kvm = {
      enable = lib.mkOption {
        type = lib.types.bool;
        default = true;
      };
    };
    docker = {
      enable = lib.mkOption {
        type = lib.types.bool;
        default = false;
      };
    };
  };

  config = lib.mkIf config.szpont.virtualization.enable (lib.mkMerge [
    (lib.mkIf config.szpont.virtualization.kvm.enable {
      virtualisation.libvirtd = {
        enable = true;
        qemu.package = pkgs.qemu_kvm;
        qemu.swtpm.enable = true;
      };
      programs.virt-manager.enable = true;
      users.users.adam.extraGroups = [ "libvirtd" ];
      boot.initrd.kernelModules = [ "kvm-amd" ];
    })

    (lib.mkIf config.szpont.virtualization.docker.enable {
      virtualisation.docker.enable = true;
      environment.systemPackages = [ pkgs.docker-compose ];
      users.users.adam.extraGroups = [ "docker" ];
    })
  ]);
}