diff --git a/hardening/bwraps/wechat.nix b/hardening/bwraps/wechat.nix
index c407e583..7e8ed177 100644
--- a/hardening/bwraps/wechat.nix
+++ b/hardening/bwraps/wechat.nix
@@ -9,14 +9,30 @@
 {
   appimageTools,
   fetchurl,
+  stdenvNoCC,
 }: let
   pname = "wechat";
   # https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/by-name/we/wechat/package.nix
-  version = "4.0.1.11";
-  src = fetchurl {
-    url = "https://web.archive.org/web/20250512110825if_/https://dldir1v6.qq.com/weixin/Universal/Linux/WeChatLinux_x86_64.AppImage";
-    hash = "sha256-gBWcNQ1o1AZfNsmu1Vi1Kilqv3YbR+wqOod4XYAeVKo=";
+  sources = {
+    aarch64-linux = {
+      version = "4.0.1.11";
+      src = fetchurl {
+        url = "https://web.archive.org/web/20250512112413if_/https://dldir1v6.qq.com/weixin/Universal/Linux/WeChatLinux_arm64.AppImage";
+        hash = "sha256-Rg+FWNgOPC02ILUskQqQmlz1qNb9AMdvLcRWv7NQhGk=";
+      };
+    };
+    x86_64-linux = {
+      version = "4.0.1.11";
+      src = fetchurl {
+        url = "https://web.archive.org/web/20250512110825if_/https://dldir1v6.qq.com/weixin/Universal/Linux/WeChatLinux_x86_64.AppImage";
+        hash = "sha256-gBWcNQ1o1AZfNsmu1Vi1Kilqv3YbR+wqOod4XYAeVKo=";
+      };
+    };
   };
+
+  inherit (stdenvNoCC.hostPlatform) system;
+  inherit (sources.${system} or (throw "Unsupported system: ${system}")) version src;
+
   # https://github.com/NixOS/nixpkgs/blob/master/pkgs/by-name/we/wechat/linux.nix
   appimageContents = appimageTools.extract {
     inherit pname version src;
diff --git a/outputs/aarch64-linux/src/12kingdoms-shoukei.nix b/outputs/aarch64-linux/src/12kingdoms-shoukei.nix
index 1a277837..68991a0f 100644
--- a/outputs/aarch64-linux/src/12kingdoms-shoukei.nix
+++ b/outputs/aarch64-linux/src/12kingdoms-shoukei.nix
@@ -19,6 +19,10 @@
       "modules/nixos/desktop.nix"
       # host specific
       "hosts/12kingdoms-${name}"
+      # nixos hardening
+      # "hardening/profiles/default.nix"
+      "hardening/nixpaks"
+      "hardening/bwraps"
     ];
     home-modules = map mylib.relativeToRoot [
       # common