diff --git a/extras/dev.nix b/extras/dev.nix
index eef0930..1f2b9c5 100644
--- a/extras/dev.nix
+++ b/extras/dev.nix
@@ -1,5 +1,7 @@
 {pkgs, ...}: {
   environment.systemPackages = with pkgs; [
+    qemu
+    # quickemu
     # lychee # link checker
     # etcher
     # freecad
diff --git a/users/tao.nix b/users/tao.nix
index 6aaa7d7..c4f065f 100644
--- a/users/tao.nix
+++ b/users/tao.nix
@@ -49,7 +49,7 @@
     snapper
     starship
     syncthingtray
-    taskwarrior
+    taskwarrior3
     thunderbird
     typst
     typst-fmt
diff --git a/users/tao/HOME.nix b/users/tao/HOME.nix
index 3aecb1b..2d55b95 100644
--- a/users/tao/HOME.nix
+++ b/users/tao/HOME.nix
@@ -81,6 +81,32 @@ in {
       extraConfig = builtins.readFile ./nushell/stuff.nu;
     };
 
+    ssh = {
+      enable = true;
+      addKeysToAgent = "yes";
+      compression = true;
+      matchBlocks = {
+        "stargate" = {
+          hostname = "stargate.cs.usfca.edu";
+          user = "tltien";
+          forwardAgent = true;
+          identityFile = "/home/tao/.ssh/id_ed25519";
+        };
+        "beagle" = {
+          hostname = "beagle";
+          user = "tltien";
+          forwardAgent = true;
+          identityFile = "/home/tao/.ssh/id_ed25519";
+          proxyCommand = "ssh stargate -W %h:%p";
+        };
+        "github" = {
+          hostname = "github.com";
+          forwardAgent = true;
+          identityFile = "/home/tao/.ssh/id_ed25519";
+        };
+      };
+    };
+
     starship = {
       enable = true;
       enableNushellIntegration = true;
diff --git a/users/tao/helix.nix b/users/tao/helix.nix
index 295b12f..f9262ff 100644
--- a/users/tao/helix.nix
+++ b/users/tao/helix.nix
@@ -52,7 +52,7 @@
       };
     };
     languages = {
-      use-grammars.only = ["rust" "c" "cpp" "typst" "nix" "html" "toml" "markdown"];
+      use-grammars.only = ["rust" "c" "cpp" "typst" "nix" "html" "toml" "markdown" "just"];
       language = [
         {
           name = "arduino";
diff --git a/users/tao/nushell/stuff.nu b/users/tao/nushell/stuff.nu
index bd785fb..327f071 100644
--- a/users/tao/nushell/stuff.nu
+++ b/users/tao/nushell/stuff.nu
@@ -69,6 +69,12 @@ alias rb = rebuild boot
 alias rs = rebuild switch
 alias gc = nh clean all
 
+def check-mullvad [] {
+  $env.LAST_EXIT_CODE = 69
+  if $env.LAST_EXIT_CODE != 0 {
+    http get https://am.i.mullvad.net/json
+  }
+}
 
 def tse [exit_node: string = ""] {
   if ($exit_node | is-empty) and (ps | find deluge | is-not-empty) {
@@ -77,7 +83,7 @@ def tse [exit_node: string = ""] {
   } else {
     tailscale set --exit-node $exit_node
   }
-  http get https://am.i.mullvad.net/json
+  check-mullvad
 }
 def tsp [] {
   tailscale exit-node list
@@ -116,8 +122,7 @@ def tsr [] {
     | select (random int 0..($in | length))
     | tse $in.0
   # tailscale status
-  sleep 5sec
-  http get https://am.i.mullvad.net/json
+  check-mullvad
 }
 alias ts = tailscale
 alias tss = tailscale status