diff --git a/systems/BASED.nix b/systems/BASED.nix
index f48453c..3c8142c 100644
--- a/systems/BASED.nix
+++ b/systems/BASED.nix
@@ -85,6 +85,14 @@
     pulse.enable = true;
   };
 
+  security.sudo-rs.enable = true;
+  # security.sudo-rs.extraRules = [{
+  #   commands = [
+  #     { command = "${pkgs.systemd}/bin/bootctl set-oneshot auto-windows"; options = [ "NOPASSWD" ]; }
+  #   ];
+  #   groups = [ "wheel" ];
+  # }];
+
   nix.settings = {
     experimental-features = "nix-command flakes";
     auto-optimise-store = true;
diff --git a/users/tao.nix b/users/tao.nix
index 27c9285..7efc6b6 100644
--- a/users/tao.nix
+++ b/users/tao.nix
@@ -1,4 +1,4 @@
-{ inputs, pkgs, ... }: {
+{ inputs, config, pkgs, ... }: {
   users.users.tao.packages = with pkgs; [
     miniserve
     # wkhtmltopdf
@@ -82,6 +82,14 @@
     configDir = "/home/tao/.config/syncthing";
   };
 
+  # obs virtual camera
+  boot.extraModulePackages = with config.boot.kernelPackages; [
+    v4l2loopback
+  ];
+  boot.extraModprobeConfig = ''
+    options v4l2loopback devices=1 video_nr=1 card_label="OBS Cam" exclusive_caps=1
+  '';
+
   fonts.packages = with pkgs; [
     (nerdfonts.override { fonts = [ "FiraCode" ]; })
     noto-fonts-cjk
@@ -94,15 +102,6 @@
     shell = pkgs.nushell;
   };
 
-
-  security.sudo-rs.enable = true;
-  security.sudo-rs.extraRules = [{
-    commands = [
-      { command = "${pkgs.systemd}/bin/bootctl set-oneshot auto-windows"; options = [ "NOPASSWD" ]; }
-    ];
-    groups = [ "wheel" ];
-  }];
-
   # i18n.inputMethod = {
   #   enabled = "fcitx5";
   #   fcitx5.addons = with pkgs; [ fcitx5-mozc fcitx5-chewing fcitx5-chinese-addons fcitx5-rime ];
diff --git a/users/tao/helix.nix b/users/tao/helix.nix
index 5ae6a30..bd5fe61 100644
--- a/users/tao/helix.nix
+++ b/users/tao/helix.nix
@@ -44,19 +44,21 @@
         { name = "typst"; indent = { tab-width = 4; unit = " "; }; }
         {
           name = "rust";
-          language-server.rust-analyzer.config = {
-            procMacro = {
-              ignored = {
-                leptos_macro = [
-                  # Optional:
-                  # "component",
-                  "server"
-                ];
-              };
-            };
-          };
         }
       ];
+      language-servers = {
+        rust-analyzer.config = {
+          procMacro = {
+            ignored = {
+              leptos_macro = [
+                # Optional:
+                # "component",
+                "server"
+              ];
+            };
+          };
+        };
+      };
       grammar = [
         {
           name = "nix";