update flake, add module

flake.nix

@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "nixpkgs/nixos-24.05";
+    nixpkgs.url = "nixpkgs/nixos-24.11";
     # Required for multi platform support
     flake-utils.url = "github:numtide/flake-utils";
   };
@@ -9,23 +9,40 @@
     flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = import nixpkgs { inherit system; };
-
-        start =
-          pkgs.writeShellScriptBin "start" ''
-            set -e
-            ${pkgs.python3}/bin/python eintopf-sync.py
-          '';
       in
-      {
+      rec {
         devShell = pkgs.mkShell {
           packages = with pkgs; with python3Packages; [
-            python3
+            python
             requests
+            beautifulsoup4
           ];
         };
 
-        packages = { inherit start; };
-        defaultPackage = start;
+        packages = flake-utils.lib.flattenTree {
+          eintopf-radar-sync = pkgs.python3Packages.buildPythonApplication {
+            pname = "eintopf-radar-sync";
+            version = "0.0.1";
+            format = "other";
+
+            src = self;
+
+            dependencies = with pkgs.python3Packages; [
+              python
+              requests
+              beautifulsoup4
+            ];
+
+            installPhase = ''
+              install -Dm755 ${./eintopf-radar-sync.py} $out/bin/eintopf-radar-sync
+            '';
+          };
+        };
+
+        defaultPackage = packages.eintopf-radar-sync;
+
+        # eintopf-radar-sync service module
+        nixosModule = (import ./module.nix);
       });
 }