Use flake-parts packages

cpp/flake.nix

@@ -12,7 +12,7 @@
 
       perSystem = { config, self', inputs', pkgs, system, ... }: {
         packages.default = pkgs.stdenv.mkDerivation {
-          pname = "my-cpp-app";
+          pname = "my-app";
           version = "0.1.0";
           src = ./.;
 

go/flake.nix

@@ -11,8 +11,8 @@
       systems = [ "x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin" ];
 
       perSystem = { config, self', inputs', pkgs, system, ... }: {
-        packages.my-app = pkgs.buildGoModule {
-          pname = "My App";
+        packages.default = pkgs.buildGoModule {
+          pname = "my-app";
           version = "0.1.0";
           src = ./.;
 
@@ -34,10 +34,9 @@
 
         # Development shell
         devShells.default = pkgs.mkShell {
+          inputsFrom = [ self'.packages.default ];
 
-          inputsFrom = [ self'.packages.my-app ];
-
-          buildInputs = with pkgs; [
+          packages = with pkgs; [
             go_1_25
             gotools
             golangci-lint

python/flake.nix

@@ -35,9 +35,9 @@
           devShells.default = pkgs.mkShell {
             inputsFrom = [ self'.packages.default ];
 
-            packages = [
-              pkgs.ruff     # Linter/Formatter
-              pkgs.pyright  # Type checker (replaced 'ty')
+            packages = with pkgs; [
+              ruff     # Linter/Formatter
+              ty  # Type checker
             ];
 
             shellHook = ''