Refactor flake.nix to use stdenv.mkDerivation instead of buildPythonApplication, disable configure/build phases, add minimal installPhase to avoid triggering Makefile. See ChatGPT conversation: https://chatgpt.com/share/69332bc4-a128-800f-a69c-fdc24c4cc7fe

flake.nix

@@ -46,14 +46,13 @@
         }
       );
 
-      # Packages: nix build .#pkgmgr / .#default
 packages = forAllSystems (system:
   let
     pkgs   = nixpkgs.legacyPackages.${system};
     python = pkgs.python311;
     pypkgs = pkgs.python311Packages;
 
-          # Be robust: ansible-core if available, otherwise ansible.
+    # Optional: ansible mit in den Closure nehmen
     ansiblePkg =
       if pkgs ? ansible-core then pkgs.ansible-core
       else pkgs.ansible;
@@ -65,10 +64,21 @@
 
       src = ./.;
 
+      # Nix soll *kein* configure / build ausführen (also auch kein make)
+      dontConfigure = true;
+      dontBuild     = true;
+
+      # Wenn du Python/Ansible im Runtime-Closure haben willst:
+      buildInputs = [
+        python
+        pypkgs.pyyaml
+        ansiblePkg
+      ];
+
       installPhase = ''
-                mkdir -p $out/bin
+        mkdir -p "$out/bin"
-                cp main.py $out/bin/pkgmgr
+        cp main.py "$out/bin/pkgmgr"
-                chmod +x $out/bin/pkgmgr
+        chmod +x "$out/bin/pkgmgr"
       '';
     };
 
@@ -78,6 +88,7 @@
 );
 
 
+
       # Apps: nix run .#pkgmgr / .#default
       apps = forAllSystems (system:
         let