I want to build a Dioxus desktop app with webview from GNU/Linux to Windows. So far, this does build

# https://discourse.nixos.org/t/cross-compile-rust-for-windows/9582/10
{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    rust-overlay.url = "github:oxalica/rust-overlay";
    rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = {
    nixpkgs,
    rust-overlay,
    ...
  }: let
    system = "x86_64-linux";
    pkgs = import nixpkgs {
      inherit system;
      crossSystem.config = "x86_64-w64-mingw32";
      overlays = [(import rust-overlay)];
    };
    pkgsLocal = import nixpkgs {inherit system;};
    rust-toolchain = pkgs.pkgsBuildHost.rust-bin.stable.latest.default.override {
      extensions = ["rust-src" "rust-analyzer" "clippy"];
      targets = ["x86_64-pc-windows-gnu"];
    };
    # rustBuildInputs =
    #   [
    #     # pkgs.pthreads
    #     pkgs.openssl
    #     pkgs.libiconv
    #     pkgs.pkg-config
    #   ]
    #   ++ lib.optionals pkgs.stdenv.isLinux [
    #     pkgs.glib
    #     pkgs.gtk3
    #     pkgs.libsoup_3
    #     pkgs.webkitgtk_4_1
    #     pkgs.xdotool
    #   ]
    #   ++ lib.optionals pkgs.stdenv.isDarwin (with pkgs.darwin.apple_sdk.frameworks; [
    #     IOKit
    #     Carbon
    #     WebKit
    #     Security
    #     Cocoa
    #   ]);
  in
    with pkgs; {
      devShells.${system}.default = mkShell {
        buildInputs = [
          pkgs.openssl
          pkgs.libiconv
          # pkgs.windows.mingw_w64_pthreads
        ];
        nativeBuildInputs = [
          rust-toolchain
          pkgsLocal.wine64
        ];
      };
    };
}

with dx bundle --platform windows --target x86_64-pc-windows-gnu --package-types msi, though bundle isn't being created.
But I get an error that the webview 2 loader dll is not found, just like https://stackoverflow.com/questions/74217709/unable-to-load-dll-webview2loader-dll-the-specified-module-could-not-be-found, which links to https://learn.microsoft.com/en-us/microsoft-edge/webview2/concepts/distribution?tabs=dotnetcsharp.

Does nixpkgs not have the WebView2 runtime-related stuff or do I have to install the runtime on the target OS in order to run my app?