Flake: replace c++ tooling with python tooling in devshell

flake.nix

@@ -11,22 +11,16 @@
     {
       devShells.x86_64-linux.default = pkgs.mkShell {
         name = "leek-devshell";
-        packages =
+        packages = with pkgs; [
-          let
+          ruff
-            kdeDeps = with pkgs.kdePackages; [
+          (
-              extra-cmake-modules
+            python3.withPackages (ps: with ps;[
-              qtbase
+              python-lsp-server
-              qtdeclarative
+              pyside6
-              kirigami
+            ]
-              ki18n
+            )
-              kcoreaddons
+          )
-              qqc2-desktop-style
+        ];
-            ];
-          in
-          with pkgs; [
-            clang-tools
-            cmake
-          ] ++ kdeDeps;
       };
       packages.x86_64-linux = rec {
         default = leek;