{
  inputs = {
    nixpkgs.url = "nixpkgs/nixos-23.05";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs = { self, nixpkgs, flake-utils, ... }:
    flake-utils.lib.eachSystem [
      "x86_64-linux" "i686-linux" "aarch64-linux"
    ] (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        kernel = pkgs.linux_latest;
      in rec {
        packages.default = pkgs.callPackage ./ethercat.nix { inherit kernel; };
        packages.ethercat = pkgs.callPackage ./ethercat.nix { inherit kernel; };
        packages.testmanager = pkgs.libsForQt5.callPackage ./testmanager.nix {};
        packages.dls = pkgs.libsForQt5.callPackage ./dls.nix {};
        packages.etherlab = pkgs.libsForQt5.callPackage ./etherlab.nix {};
        packages.qtpdwidgets = pkgs.libsForQt5.callPackage ./qtpdwidgets.nix {};
        packages.pdcom = pkgs.callPackage ./pdcom.nix {};
        packages.pdserv = pkgs.callPackage ./pdserv.nix {};
        overlay = final: prev: {
          ethercat = packages.ethercat;
          testmanager = packages.testmanager;
          dls = packages.dls;
          etherlab = packages.etherlab;
          qtpdqidgets = packages.qtpdqidgets;
          pdcom = packages.pdcom;
          pdserv = packages.pdserv;
        };
      }
    );
}