{
  description = "GTK4 Minesweeper game";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs { inherit system; };

        # Robust fallbacks across channels
        wrapGApps = pkgs.wrapGAppsHook4 or pkgs.wrapGAppsHook;
        adwaitaTheme = pkgs.gnome.adwaita-icon-theme or pkgs.adwaita-icon-theme;
      in
      {
        # Main package
        packages.default = pkgs.stdenv.mkDerivation rec {
          pname = "minesweeper";
          version = "0.1";
          src = self;

          strictDeps = true;

          nativeBuildInputs = with pkgs; [
            meson
            ninja
            pkg-config
            gobject-introspection
            wrapGApps
          ];

          buildInputs = with pkgs; [
            gtk4
            gtkmm4
            glibmm
            libsigcxx30
            gdk-pixbuf
            librsvg                    # SVG loader
            gvfs                       # GIO modules
            gsettings-desktop-schemas
            hicolor-icon-theme
            adwaitaTheme
          ];

          # Ensure we use Nix-provided GIO modules, not host ones
          preFixup = ''
            gappsWrapperArgs+=(
              --set GIO_EXTRA_MODULES ${pkgs.gvfs}/lib/gio/modules
            )
          '';

          meta = with pkgs.lib; {
            description = "A simple GTKmm4 Minesweeper game";
            homepage = "https://example.org/minesweeper";
            license = licenses.gpl3Plus;
            platforms = platforms.linux;
            mainProgram = "minesweeper";
          };
        };

        # nix run support
        apps.${system}.default = {
          type = "app";
          program = "${self.packages.${system}.default}/bin/minesweeper";
        };

        # Dev shell for hacking
        devShells.default = pkgs.mkShell {
          nativeBuildInputs = with pkgs; [
            meson
            ninja
            pkg-config
            gobject-introspection
          ];
          buildInputs = with pkgs; [
            gtk4
            gtkmm4
            glibmm
            libsigcxx30
            gdk-pixbuf
            librsvg
            gvfs
            gsettings-desktop-schemas
            hicolor-icon-theme
            adwaitaTheme
          ];
        };
      });
}