streaming from imac now works

mods/eGTouch-driver/module.nix

@@ -0,0 +1,2 @@
+{ pkgs, ... }: {
+}

mods/eGTouch-driver/pkg.nix

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+
+{ stdenv
+, fetchurl
+, p7zip
+
+# wether to build the version to be used with Xorg or not Xorg (eg wayland)
+, forXorg ? false
+, ...
+}: let
+
+  nameExtension = (
+    if stdenv.isx86_64 or stdenv.isx86_32 
+    then "x" 
+    else if stdenv.isAarch64 or stdenv.isAarch32 or stdenv.isMips 
+    then "ma" 
+    else builtins.throw "unsupported system" ""
+  );
+  fileName = "eGTouch_v2.5.13219.L-${nameExtension}";
+  pathArch = 
+    if stdenv.isAarch64 then  "eGTouchAARCH64"
+    else builtins.throw "unsupported arch..." "";
+  pathBackend = 
+    if forXorg then "${pathArch}withX"
+    else "${pathArch}nonX";
+
+in stdenv.mkDerivation rec {
+  version = "2.5";
+  pname = "eGTouch";
+
+  nativeBuildInputs = [
+    p7zip # to unpack the src
+  ];
+
+  # there are seperate tarballs... one for x86 and one for arm andmips
+  src = fetchurl {
+    url = "https://www.eeti.com/touch_driver/Linux/20240510/${fileName}.7z";
+    hash = 
+      if nameExtension == "x" 
+      then "sha256-zZlM4finrnvtxBmqKm4Sl0zQeFz/7yCTuTjXEwmolVI=" 
+      else "";
+  };
+
+  unpackPhase = ''
+    7z x $src
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp ./${fileName}/${pathArch}/${pathBackend}/eGTouch $out/bin
+  '';
+
+}