diff --git a/home/modules/gpg/default.nix b/home/modules/gpg/default.nix
index f70087f..1862db3 100644
--- a/home/modules/gpg/default.nix
+++ b/home/modules/gpg/default.nix
@@ -26,7 +26,7 @@
         {
           enable = true;
           enableSshSupport = true;
-          pinentryPackage = pkgs.pinentry-qt;
+          pinentryPackage = pkgs.pinentry-curses;
         }
         (lib.mkIf config.youthlic.programs.fish.enable {
           enableFishIntegration = true;
diff --git a/nixos/configurations/Tytonidae/default.nix b/nixos/configurations/Tytonidae/default.nix
index bfabfcd..6cfce14 100644
--- a/nixos/configurations/Tytonidae/default.nix
+++ b/nixos/configurations/Tytonidae/default.nix
@@ -1,13 +1,16 @@
-{ pkgs, inputs, ... }:
+{
+  lib,
+  pkgs,
+  inputs,
+  ...
+}:
 {
   imports =
     (with inputs; [
       nixos-hardware.nixosModules.asus-fx506hm
     ])
     ++ [
-      ./gui.nix
       ./users
-      ./steam.nix
 
       # Include the hardware related config
       ./hardware-configuration.nix
@@ -26,6 +29,16 @@
       openssh.enable = true;
       steam.enable = true;
     };
+    gui.enabled = "niri";
+  };
+
+  specialisation = {
+    cosmic = {
+      inheritParentConfig = true;
+      configuration = {
+        youthlic.gui.enabled = lib.mkForce "cosmic";
+      };
+    };
   };
 
   programs.gnupg.agent = {
@@ -55,6 +68,7 @@
     wechat-uos
     nvtopPackages.full
     spotify
+    localsend
   ];
 
   environment.variables.EDITOR = "hx";
diff --git a/nixos/configurations/Tytonidae/gui.nix b/nixos/configurations/Tytonidae/gui.nix
deleted file mode 100644
index c5a3268..0000000
--- a/nixos/configurations/Tytonidae/gui.nix
+++ /dev/null
@@ -1,72 +0,0 @@
-{ pkgs, ... }:
-{
-  # Enable the X11 windowing system.
-  # You can disable this if you're only using the Wayland session.
-  services.xserver = {
-    display = 0;
-    enable = true;
-  };
-  # Enable the KDE Plasma Desktop Environment.
-  # services.displayManager.sddm.enable = true;
-  # services.desktopManager.plasma6.enable = true;
-  services.desktopManager.cosmic.enable = true;
-  services.displayManager.cosmic-greeter.enable = true;
-  programs.niri = {
-    enable = true;
-    package = pkgs.niri-unstable;
-  };
-
-  # Configure keymap in X11
-  services.xserver.xkb = {
-    layout = "cn";
-    variant = "";
-  };
-
-  environment.systemPackages = with pkgs; [
-    fontconfig
-  ];
-  programs.firefox.enable = true;
-  programs.localsend.enable = true;
-
-  fonts = {
-    enableDefaultPackages = false;
-    packages = with pkgs; [
-      nerd-fonts.fira-code
-      noto-fonts
-      noto-fonts-cjk-sans
-      noto-fonts-cjk-serif
-      noto-fonts-emoji
-      lxgw-wenkai
-    ];
-    fontconfig.defaultFonts = pkgs.lib.mkForce {
-      serif = [
-        "LXGW WenKai"
-        "Noto Serif CJK SC"
-        "Noto Serif"
-      ];
-      sansSerif = [
-        "Noto Serif CJK SC"
-        "Noto Serif"
-      ];
-      monospace = [
-        "FiraCode Nerd Font"
-      ];
-      emoji = [ "Noto Color Emoji" ];
-    };
-  };
-
-  services.pulseaudio.enable = false;
-  security.rtkit.enable = true;
-  services.pipewire = {
-    enable = true;
-    alsa.enable = true;
-    alsa.support32Bit = true;
-    pulse.enable = true;
-    # If you want to use JACK applications, uncomment this
-    #jack.enable = true;
-
-    # use the example session manager (no others are packaged yet so this is enabled by default,
-    # no need to redefine it in your config for now)
-    #media-session.enable = true;
-  };
-}
diff --git a/nixos/modules/default.nix b/nixos/modules/default.nix
index ea1ddad..b1763c2 100644
--- a/nixos/modules/default.nix
+++ b/nixos/modules/default.nix
@@ -20,6 +20,9 @@
       ./dae
       ./openssh.nix
       ./nh.nix
+      ./i18n.nix
+      ./gui.nix
+      ./steam.nix
     ];
 
   config = {
diff --git a/nixos/modules/gui.nix b/nixos/modules/gui.nix
new file mode 100644
index 0000000..ce97af9
--- /dev/null
+++ b/nixos/modules/gui.nix
@@ -0,0 +1,103 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.youthlic.gui;
+in
+{
+  options = {
+    youthlic.gui = {
+      enabled = lib.mkOption {
+        type = lib.types.nullOr (
+          lib.types.enum [
+            "cosmic"
+            "niri"
+          ]
+        );
+        default = null;
+        example = "cosmic";
+      };
+    };
+  };
+  config = lib.mkMerge [
+    (lib.mkIf (cfg.enabled == "cosmic") {
+      # Enable the X11 windowing system.
+      # You can disable this if you're only using the Wayland session.
+      services.xserver = {
+        display = 0;
+        enable = true;
+        xkb = {
+          layout = "cn";
+          variant = "";
+        };
+      };
+
+      services.desktopManager.cosmic.enable = true;
+      services.displayManager.cosmic-greeter.enable = true;
+    })
+    (lib.mkIf (cfg.enabled == "niri") {
+      services.displayManager.sddm = {
+        enable = true;
+        wayland = {
+          enable = true;
+          compositorCommand = "niri";
+        };
+      };
+      programs.niri = {
+        enable = true;
+        package = pkgs.niri-unstable;
+      };
+    })
+    (lib.mkIf (cfg.enabled != null) {
+      environment.systemPackages = with pkgs; [
+        fontconfig
+      ];
+      programs.firefox.enable = true;
+
+      fonts = {
+        enableDefaultPackages = false;
+        packages = with pkgs; [
+          nerd-fonts.fira-code
+          noto-fonts
+          noto-fonts-cjk-sans
+          noto-fonts-cjk-serif
+          noto-fonts-emoji
+          lxgw-wenkai
+        ];
+        fontconfig.defaultFonts = pkgs.lib.mkForce {
+          serif = [
+            "LXGW WenKai"
+            "Noto Serif CJK SC"
+            "Noto Serif"
+          ];
+          sansSerif = [
+            "Noto Serif CJK SC"
+            "Noto Serif"
+          ];
+          monospace = [
+            "FiraCode Nerd Font"
+          ];
+          emoji = [ "Noto Color Emoji" ];
+        };
+      };
+
+      services.pulseaudio.enable = false;
+      security.rtkit.enable = true;
+      services.pipewire = {
+        enable = true;
+        alsa.enable = true;
+        alsa.support32Bit = true;
+        pulse.enable = true;
+        # If you want to use JACK applications, uncomment this
+        #jack.enable = true;
+
+        # use the example session manager (no others are packaged yet so this is enabled by default,
+        # no need to redefine it in your config for now)
+        #media-session.enable = true;
+      };
+    })
+  ];
+}