update flake structure and update default.nix for production.

flake.nix

@@ -36,40 +36,56 @@
       };
 
       cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
-      packageName = cargoToml.package.name;
       packageVersion = cargoToml.package.version;
       bevyVersion = cargoToml.dependencies.bevy;
     in
     {
       packages.${system} = {
-        default = pkgs.callPackage ./default.nix {
-          packageName = packageName;
-        };
+        default = pkgs.callPackage ./default.nix { };
 
         develop = naerskLib.buildPackage {
-          name = "${packageName}";
+          name = "war-in-tunnels";
           src = ./.;
           buildInputs = with pkgs; [
             wayland
             alsa-lib
-            libudev-zero
+            udev
+            libxkbcommon
+            vulkan-loader
           ];
           nativeBuildInputs = with pkgs; [ pkg-config ];
         };
       };
 
       devShells.${system}.default = pkgs.mkShell {
-        env.RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
         buildInputs = [
           rustToolchain
-          pkgs.wayland
-          pkgs.alsa-lib
-          pkgs.libudev-zero
-        ];
+        ]
+        ++ (with pkgs; [
+          wayland
+          alsa-lib
+          udev
+          libxkbcommon
+          vulkan-loader
+        ]);
         nativeBuildInputs = with pkgs; [ pkg-config ];
+        env = {
+          RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
+          LD_LIBRARY_PATH =
+            with pkgs;
+            "$LD_LIBRARY_PATH:${
+              lib.makeLibraryPath [
+                wayland
+                alsa-lib
+                udev
+                libxkbcommon
+                vulkan-loader
+              ]
+            }";
+        };
 
         shellHook = ''
-          echo "${packageName} v${packageVersion}"
+          echo "War in Tunnels v${packageVersion}"
           echo "Bevy           v${bevyVersion}"
           echo ""
           echo "Commands:"