feat: environment variables for wayland & nvidia

home/linux/gui/base/desktop/default.nix

@@ -6,8 +6,25 @@
 {
   imports = [
     ./anyrun.nix
+    ./nvidia.nix
   ];
 
+  # wayland related
+  home.sessionVariables = {
+    "NIXOS_OZONE_WL" = "1"; # for any ozone-based browser & electron apps to run on wayland
+    "MOZ_ENABLE_WAYLAND" = "1"; # for firefox to run on wayland
+    "MOZ_WEBRENDER" = "1";
+    # enable native Wayland support for most Electron apps
+    "ELECTRON_OZONE_PLATFORM_HINT" = "auto";
+    # misc
+    "_JAVA_AWT_WM_NONREPARENTING" = "1";
+    "QT_WAYLAND_DISABLE_WINDOWDECORATION" = "1";
+    "QT_QPA_PLATFORM" = "wayland";
+    "SDL_VIDEODRIVER" = "wayland";
+    "GDK_BACKEND" = "wayland";
+    "XDG_SESSION_TYPE" = "wayland";
+  };
+
   home.packages = with pkgs; [
     swaybg # the wallpaper
     wl-clipboard # copying and pasting

home/linux/gui/base/desktop/nvidia.nix

@@ -0,0 +1,26 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib;
+let
+  cfg = config.modules.desktop.nvidia;
+in
+{
+  options.modules.desktop.nvidia = {
+    enable = mkEnableOption "whether nvidia GPU is used";
+  };
+
+  config = mkIf (cfg.enable && cfg.enable) {
+    home.sessionVariables = {
+      # for hyprland with nvidia gpu" = " ref https://wiki.hyprland.org/Nvidia/
+      "LIBVA_DRIVER_NAME" = "nvidia";
+      "__GLX_VENDOR_LIBRARY_NAME" = "nvidia";
+      # VA-API hardware video acceleration
+      "NVD_BACKEND" = "direct";
+
+      "GBM_BACKEND" = "nvidia-drm";
+    };
+  };
+}