{ config, lib, ... }: {

    options.sysconfig.docker = {
        enable = with lib; mkOption {
            type = with types; bool;
            default = false;
        };

        nvidia = with lib; mkOption {
            type = with types; bool;
            default = false;
        };
    };

    imports = let 
        dir = builtins.readDir ./.;
    in builtins.map (x: ./${x}) (builtins.filter 
        (file: (dir.${file} == "directory"))
        (builtins.attrNames dir)
    );

    config = lib.mkIf config.sysconfig.docker.enable {

        virtualisation = {
            docker = {
                enable = true;
                storageDriver = "btrfs";
            };

            oci-containers = {
                backend = "docker";
            };
        };

        hardware.nvidia-container-toolkit.enable = config.sysconfig.docker.nvidia;
    };
}