add NordVPN module instead of not working external flake

shells/ddt4all.nix

@@ -8,12 +8,20 @@ let
     	ps.crcmod
     	ps.pyserial
   	]);
+
+	src = pkgs.fetchFromGitHub {
+		owner = "cedricp";
+		repo = "ddt4all";
+		rev = "v3.0.4";
+		sha256 = "sha256-SswaqV2UabVjuNeMTd7K3Vxa77LZKCb/qkgidkaE0R8=";
+	};
 in pkgs.mkShell {
 	name = "ddt4all-env";
 
   	buildInputs = [
     	pythonWithPkgs
-    	pkgs.qt5.qtbase
+    	src
+		pkgs.qt5.qtbase
     	pkgs.qt5.qttools
     	pkgs.git
     	pkgs.freetype
@@ -32,20 +40,15 @@ in pkgs.mkShell {
   	];
 
   	nativeBuildInputs = [ pkgs.libsForQt5.qt5.wrapQtAppsHook ];
-  	shellHook = ''wrapQtAppsHook'';
 
-  	runScript = ''
+ 	shellHook = ''
+		mkdir -p $HOME/DDT4ALL
+		cp -r $src/bin/* $HOME/DDT4ALL
+
 		cd $HOME/DDT4ALL
+		wrapQtAppsHook
 
-    	if [ ! -d ".venv" ]; then
-      		python3 -m venv .venv
-      		source .venv/bin/activate
-      		pip install --upgrade pip
-      		pip install -r requirements.txt
-    	else
-      		source .venv/bin/activate
-    	fi
-
-    	python3 main.py
+    	python main.py
+		#exit
 	'';
 }