{
  inputs = {
    nixpkgs.url = "nixpkgs/nixos-23.05";
    flake-utils.url = "github:numtide/flake-utils";
    linuxcnc-src = {
      #url = "github:LinuxCNC/linuxcnc?ref=v2.8.4"; #requires python2
      url = "github:LinuxCNC/linuxcnc";
      flake = false;
    };

    yapps-src = {
      url = "github:smurfix/yapps";
      flake = false;
    };
    pangocffi-src = {
      url = "github:leifgehrmann/pangocffi";
      flake = false;
    };
  };
  outputs = { self, nixpkgs, flake-utils, linuxcnc-src, mach-nix, yapps-src, pangocffi-src, ... }:
    flake-utils.lib.eachSystem [
      "x86_64-linux" "i686-linux" "aarch64-linux"
    ] (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        yapps = pkgs.python3Packages.buildPythonApplication {
          pname = "yapps";
          version = "1.0";
          #propagatedBuildInputs = [ flask ];
          src = yapps-src;
        };
        pangocffi = pkgs.python3Packages.buildPythonApplication {
          pname = "pangocffi";
          version = "1.0";

          nativeBuildInputs = [
            pkgs.pkg-config
            pkgs.libffi
            pkgs.pango.dev
            pkgs.glib
            pkgs.python3Packages.setuptools
          ];
          propagatedBuildInputs = with pkgs.python3Packages; [
            cffi
            pytest
            setuptools

            flake8
            pytest
            coverage
            sphinx
            sphinx_rtd_theme
            tox
            twine
          ];
          src = pangocffi-src;

          setuptoolsCheckPhase = ''
            echo "SKIPPING setuptoolsCheckPhase"
          '';
        };
        #boostPython = pkgs.boost174.override { python = pkgs.python3; enablePython = true; };
        boostPython = pkgs.boost174.override {  enablePython = true; };
        linuxcnc = pkgs.stdenv.mkDerivation {

          # https://linuxcnc.org/docs/devel/html/code/building-linuxcnc.html
          name = "linuxcnc";

          src = linuxcnc-src;

          enableParallelBuilding = true;

          #preConfigure = ''
          #  cd src
          #  #./autogen.sh
          #'';
          preAutoreconf = ''
            cd src
          '';

          configureFlags = [
            "--with-realtime=uspace"
            "--enable-non-distributable=yes"
            "--with-tclConfig=${pkgs.tcl}/lib/tclConfig.sh"
            "--with-tkConfig=${pkgs.tk}/lib/tkConfig.sh"
            #"--with-boost-python=${boostPython.dev}/include/boost/"
            #"PYTHON_LDFLAGS=-L${pkgs.python39Packages.python}/lib"
          ];

          nativeBuildInputs = with pkgs; [
            autoreconfHook
            pkg-config
            #wrapGAppsHook
            gobject-introspection
          ];
          #nativeBuildInputs = [ pkgs.pkg-config ];
          buildInputs = with pkgs; [
            libtirpc
            udev
            libmodbus
            libusb
            glib
            gtk3.dev
            gtk2.dev
            psmisc

            yapps

            intltool

            boostPython
            boostPython.dev
            #python3Packages.boost
            #python3Packages.boost.dev
            #python3Packages.eigenpy
            #pkgs.python39Packages.python

            tcl
            tclx
            tk.dev
            tkimg
            bwidget

            python3Packages.pygobject3

            readline.dev

            python3Packages.tkinter

            libGLU

            xorg.libXmu.dev
            ps
            sysvtools
            util-linux

            #tclreadline
            #pkgs.python3Packages.pygobject3.dev
            #pkgs.python3Packages.gst-python
            #pangocffi
            #pkgs.pango.dev

            #pkgs.python3Packages.pyxdg
            #pkgs.python3Packages.xcffib
            #pkgs.python3Packages.cairocffi
            #pkgs.python3Packages.manimpango

          ];

        };

      in
      {
        #packages.default = pkgs.tk;
        packages.default = linuxcnc;
        packages.linuxcnc = linuxcnc;
      }
    );
}