diff --git a/README.md b/README.md
index cc987bd8..db369e94 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,10 @@ This repository is home to the nix code that builds my systems.
 
 ## TODO
 
+- fix wayland related problems
+  - fcitx5 input method - currently not work in vscode, and failed to add flypy input method
+- status bar and other hyprland scripts
+  - some of them do not work
 - [sops-nix](https://github.com/Mic92/sops-nix): secret management
 - [devShell](https://github.com/numtide/devshell): manage development environments
 
diff --git a/flake.lock b/flake.lock
index 189f5679..9eff74b9 100644
--- a/flake.lock
+++ b/flake.lock
@@ -222,6 +222,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-stable": {
+      "locked": {
+        "lastModified": 1683207485,
+        "narHash": "sha256-gs+PHt/y/XQB7S8+YyBLAM8LjgYpPZUVFQBwpFSmJro=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "cc45a3f8c98e1c33ca996e3504adefbf660a72d1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-22.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-wayland": {
       "inputs": {
         "flake-compat": "flake-compat",
@@ -297,6 +313,7 @@
         "hyprland": "hyprland",
         "nixos-cn": "nixos-cn",
         "nixpkgs": "nixpkgs_2",
+        "nixpkgs-stable": "nixpkgs-stable",
         "nixpkgs-wayland": "nixpkgs-wayland"
       }
     },
diff --git a/flake.nix b/flake.nix
index adfa7d0c..435c8d35 100644
--- a/flake.nix
+++ b/flake.nix
@@ -34,7 +34,9 @@
   inputs = {
     # flake inputs 有很多种引用方式，应用最广泛的是 github 的引用方式
 
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";      # 使用 nixos-unstable 分支
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";       # 使用 nixos-unstable 分支 for nix flakes
+    nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-22.11";    # unstable branch may be broken sometimes, use stable branch when necessary
+
     home-manager.url = "github:nix-community/home-manager";
     #　follows 是　inputs 中的继承语法
     # 这里使　home-manager 的　nixpkgs 这个 inputs 与当前　flake 的　inputs.nixpkgs 保持一致，避免依赖的　nixpkgs 版本不一致导致问题
@@ -43,7 +45,7 @@
     # modern window compositor
     hyprland.url = "github:hyprwm/Hyprland";
     # community wayland nixpkgs
-    nixpkgs-wayland  = { url = "github:nix-community/nixpkgs-wayland"; };
+    nixpkgs-wayland.url = "github:nix-community/nixpkgs-wayland";
 
     # nixos-cn 提供了一些国内常用的程序包，如 qq wechat dingtalk 等
     nixos-cn = {
@@ -59,6 +61,7 @@
   outputs = inputs@{
       self,
       nixpkgs,
+      nixpkgs-stable,
       home-manager,
       nixos-cn,
       ...
@@ -84,7 +87,10 @@
         #
         # nix flake 的 modules 系统可将配置模块化，提升配置的可维护性
         # 默认只能传上面这四个参数，如果需要传其他参数，必须使用 specialArgs
-        specialArgs = {inherit inputs;};
+        specialArgs = {
+          inherit nixos-cn;
+          inherit nixpkgs-stable;
+        }; 
         modules = [
           ./hosts/nixos-test
 
@@ -114,7 +120,10 @@
       msi-rtx4090 = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
 
-        specialArgs = {inherit inputs;}; 
+        specialArgs = {
+          inherit nixos-cn;
+          inherit nixpkgs-stable;
+        }; 
         modules = [
           ./hosts/msi-rtx4090
 
@@ -129,13 +138,6 @@
             home-manager.extraSpecialArgs = inputs;
             home-manager.users.ryan = import ./home;
           }
-
-          # 将 nixos-cn flake 提供的 registry 添加到全局 registry 列表中
-          # 可在`nixos-rebuild switch`之后通过`nix registry list`查看
-          nixos-cn.nixosModules.nixos-cn-registries
-
-          # 引入nixos-cn flake提供的NixOS模块
-          nixos-cn.nixosModules.nixos-cn
         ];
       };
 
diff --git a/home/fcitx5/README.md b/home/fcitx5/README.md
new file mode 100644
index 00000000..a4f96010
--- /dev/null
+++ b/home/fcitx5/README.md
@@ -0,0 +1,4 @@
+# Fcitx5-Rime + Flypy
+
+
+
diff --git a/home/fcitx5/default.nix b/home/fcitx5/default.nix
index 9da1d3f3..c72a531b 100644
--- a/home/fcitx5/default.nix
+++ b/home/fcitx5/default.nix
@@ -16,9 +16,12 @@
       };
     in
     with pkgs; [
+        # for flypy chinese input method
         fcitx5-rime
         fcitx5-configtool
         fcitx5-chinese-addons
+        fcitx5-mozc    # japanese input method
+        fcitx5-gtk     # gtk im module
       ];
   };
 }
diff --git a/home/hyprland/default.nix b/home/hyprland/default.nix
index aafe431c..0fc58dd0 100644
--- a/home/hyprland/default.nix
+++ b/home/hyprland/default.nix
@@ -47,10 +47,9 @@
     ncmpcpp  # a mpd client with a UI
 	];
 
-  # if use vscode in wayland, uncomment those line
   systemd.user.sessionVariables = {
-    "NIXOS_OZONE_WL" = "1";   # for vscode
-    "MOZ_ENABLE_WAYLAND" = "1";
+    "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
 
     # for hyprland with nvidia gpu, ref https://wiki.hyprland.org/Nvidia/
     "LIBVA_DRIVER_NAME" = "nvidia";
diff --git a/home/programs/browsers.nix b/home/programs/browsers.nix
index 6166bd2b..23b6cda4 100644
--- a/home/programs/browsers.nix
+++ b/home/programs/browsers.nix
@@ -1,23 +1,24 @@
 {
   pkgs,
+  nixpkgs-stable,
   config,
   ...
 }: {
-  home.packages = with pkgs; [
-    # use wayland version of firefox
-    firefox-wayland
-  ];
+  home.packages = 
+    let
+      pkgs-stable = import nixpkgs-stable {
+        system = pkgs.system;
+        config.allowUnfree = true;
+      };
+    in
+    with pkgs-stable; [
+      firefox-wayland
 
-  programs =
-    let commandLineArgs = [ "--enable-wayland-ime" "--ozone-platform=wayland" ];
-    in {
-      chromium = {
-        enable = true;
-        inherit commandLineArgs;
-      };
-      google-chrome = {
-        enable = true;
-        inherit commandLineArgs;
-      };
-    };
+      # chrome wayland support was broken on nixos-unstable branch, so fallback to stable branch for now
+      # https://github.com/swaywm/sway/issues/7562
+      google-chrome
+    ];
+
+  # programs = {
+  # };
 }
diff --git a/home/programs/common.nix b/home/programs/common.nix
index b50fd4d1..b22f5daf 100644
--- a/home/programs/common.nix
+++ b/home/programs/common.nix
@@ -9,7 +9,6 @@
     ripgrep
     yq-go    # https://github.com/mikefarah/yq
     htop
-    nvtop
 
     ## networking tools
     wireshark
diff --git a/home/programs/default.nix b/home/programs/default.nix
index 5ad0c01e..a1684e21 100644
--- a/home/programs/default.nix
+++ b/home/programs/default.nix
@@ -8,6 +8,7 @@
     ./common.nix
     ./git.nix
     ./media.nix
+    ./nixos-cn.nix
     ./vscode.nix
     ./xdg.nix
   ];
diff --git a/home/programs/nixos-cn.nix b/home/programs/nixos-cn.nix
index 185814cf..f42ca70f 100644
--- a/home/programs/nixos-cn.nix
+++ b/home/programs/nixos-cn.nix
@@ -5,24 +5,19 @@
   ...
 }:
 {
+  imports = [
+    # 将 nixos-cn flake 提供的 registry 添加到全局 registry 列表中
+    # 可在`nixos-rebuild switch`之后通过`nix registry list`查看
+    nixos-cn.nixosModules.nixos-cn-registries
 
-  home.packages = with nixos-cn; [
-    qq
-    wechat-uos
-    netease-cloud-music
+    # 引入nixos-cn flake提供的NixOS模块
+    nixos-cn.nixosModules.nixos-cn
   ];
 
-  programs = {
-    mpv = {
-      enable = true;
-      defaultProfiles = ["gpu-hq"];
-      scripts = [pkgs.mpvScripts.mpris];
-    };
-
-    obs-studio.enable = true;
-  };
-
-  services = {
-    playerctld.enable = true;
-  };
+  # # 使用 nixos-cn flake 提供的包
+  home.packages = with nixos-cn.legacyPackages.${pkgs.system}; [
+      # qq
+      # wechat-uos           # TODO failed to install
+      netease-cloud-music  # TODO chinese font missing
+    ];
 }
\ No newline at end of file
diff --git a/home/programs/xdg.nix b/home/programs/xdg.nix
index e9962228..c8a5b6f8 100644
--- a/home/programs/xdg.nix
+++ b/home/programs/xdg.nix
@@ -21,8 +21,8 @@
     "video/*" = ["mpv.dekstop"];
     "image/*" = ["imv.desktop"];
     "application/json" = browser;
-    "application/pdf" = ["org.pwmt.zathura.desktop.desktop"];
-    "x-scheme-handler/discord" = ["discordcanary.desktop"];
+    "application/pdf" = ["org.pwmt.zathura.desktop.desktop"];  # TODO: pdf viewer
+    "x-scheme-handler/discord" = ["discord.desktop"];
     "x-scheme-handler/spotify" = ["spotify.desktop"];
     "x-scheme-handler/tg" = ["telegramdesktop.desktop"];
   };
@@ -43,6 +43,5 @@ in {
         XDG_SCREENSHOTS_DIR = "${config.xdg.userDirs.pictures}/Screenshots";
       };
     };
-
   };
 }
diff --git a/hosts/msi-rtx4090/default.nix b/hosts/msi-rtx4090/default.nix
index a528985e..25164021 100644
--- a/hosts/msi-rtx4090/default.nix
+++ b/hosts/msi-rtx4090/default.nix
@@ -9,7 +9,6 @@
     [
       ../../modules/system.nix
       ../../modules/hyprland.nix
-      ../../modules/nixpkgs-wayland.nix
 
       # Include the results of the hardware scan.
       ./hardware-configuration.nix
@@ -51,14 +50,22 @@
 
 
   # for Nvidia GPU
-  services.xserver.videoDrivers = ["nvidia"];
-  hardware.opengl.enable = true;
+
+  services.xserver.videoDrivers = ["nvidia"];  # will install nvidia-vaapi-driver by default
   hardware.nvidia = {
     package = config.boot.kernelPackages.nvidiaPackages.stable;
     modesetting.enable = true;
+    powerManagement.enable = true;
+  };
+
+  hardware.opengl = {
+    enable = true;
+    # if hardware.opengl.driSupport is enabled, mesa is installed and provides Vulkan for supported hardware. 
+    driSupport = true;
+    # needed by nvidia-docker
+    driSupport32Bit = true;
   };
 
-  hardware.opengl.driSupport32Bit = true;
   virtualisation.docker = {
     enable = true;
     enableNvidia = true;
diff --git a/hosts/nixos-test/default.nix b/hosts/nixos-test/default.nix
index b4876a8f..059f6d98 100644
--- a/hosts/nixos-test/default.nix
+++ b/hosts/nixos-test/default.nix
@@ -9,7 +9,6 @@
     [
       ../../modules/system.nix
       ../../modules/hyprland.nix
-      ../../modules/nixpkgs-wayland.nix
 
       # Include the results of the hardware scan.
       ./hardware-configuration.nix
diff --git a/modules/hyprland.nix b/modules/hyprland.nix
index 858796c7..f4c2913c 100644
--- a/modules/hyprland.nix
+++ b/modules/hyprland.nix
@@ -15,9 +15,12 @@
     };
 
     displayManager = {
-        defaultSession = "hyprland";
-        lightdm.enable = false;
-        gdm.enable = true;
+      defaultSession = "hyprland";
+      lightdm.enable = false;
+      gdm = {
+        enable = true;
+        wayland = true;
+      };
     };
   };
 
@@ -42,4 +45,18 @@
   services.tumbler.enable = true; # Thumbnail support for images
 
   
+  xdg.portal = {
+    enable = true;
+    wlr.enable = true;
+    xdgOpenUsePortal = true;
+    extraPortals = with pkgs; [
+      xdg-desktop-portal-wlr  # for wlroots based compositors
+      # xdg-desktop-portal-kde  # for kde
+      # xdg-desktop-portal-gtk  # for gtk
+    ];
+  };
+
+  # for power management
+  services.upower.enable = true;
+
 }
diff --git a/modules/i3.nix b/modules/i3.nix
index 20a6df3d..2bab3c2d 100644
--- a/modules/i3.nix
+++ b/modules/i3.nix
@@ -13,9 +13,9 @@
     };
 
     displayManager = {
-        defaultSession = "none+i3";
-        lightdm.enable = false;
-        gdm.enable = true;
+      defaultSession = "none+i3";
+      lightdm.enable = false;
+      gdm.enable = true;
     };
 
     windowManager.i3 = {
diff --git a/modules/nixpkgs-wayland.nix b/modules/nixpkgs-wayland.nix
deleted file mode 100644
index 2647e740..00000000
--- a/modules/nixpkgs-wayland.nix
+++ /dev/null
@@ -1,2 +0,0 @@
-{pkgs, config, ... }: {
-}
\ No newline at end of file
diff --git a/modules/system.nix b/modules/system.nix
index e76eb4b2..a8c5fe31 100644
--- a/modules/system.nix
+++ b/modules/system.nix
@@ -114,6 +114,11 @@
 
     # video/audio tools
     libva-utils
+    nvtop
+    vdpauinfo
+    vulkan-tools
+    glxinfo
+    glmark2
 
     # minimal screen capture tool, used by i3 blur lock to take a screenshot
     # print screen key is also bound to this tool in i3 config