fix(nix): incorrect namespace for vulkan-loader, add cargo-zigbuild

default.nix

@@ -13,7 +13,7 @@
   stdenv,
   targetPackages ? pkgs,
 }: let
-  version = (builtins.fromTOML (builtins.readFile ./engine/Cargo.toml)).package.version;
+  version = (builtins.fromTOML (builtins.readFile ./Cargo.toml)).package.version;
   src = nix-gitignore.gitignoreSource [] ./.;
 in
 rustPlatform.buildRustPackage rec {
@@ -61,7 +61,7 @@ rustPlatform.buildRustPackage rec {
       --set LD_LIBRARY_PATH ${lib.makeLibraryPath buildInputs}
   '' + lib.optionalString stdenv.targetPlatform.isWindows ''
     mkdir -p $out/bin
-    cp ${targetPackages.vulkan-loader}/bin/vulkan-1.dll $out/bin/
+    cp ${pkgs.vulkan-loader}/bin/vulkan-1.dll $out/bin/
   '';
 
   doCheck = false;
@@ -72,4 +72,4 @@ rustPlatform.buildRustPackage rec {
     platforms = lib.platforms.all;
     mainProgram = "zenyx";
   };
-}
+}

flake.nix

@@ -41,6 +41,7 @@
           cargo-cross
           cargo-xwin
           cargo-wizard
+	  cargo-zigbuild
           wine64
           pkg-config
         ];