diff --git a/home/applications/atuin/default.nix b/home/applications/atuin/default.nix
index d4a3e71..49afc05 100644
--- a/home/applications/atuin/default.nix
+++ b/home/applications/atuin/default.nix
@@ -12,11 +12,6 @@
           ["nix" "nom" "nh" "podman" "docker" "atuin" "hugo" "adb"]
           # default
           ++ ["cargo" "go" "git" "npm" "yarn" "pnpm" "kubectl"];
-
-        common_prefix =
-          ["env"]
-          # default
-          ++ ["sudo"];
       };
     };
   };
diff --git a/home/applications/nix/default.nix b/home/applications/nix/default.nix
index 774a8b4..f1bf1c4 100644
--- a/home/applications/nix/default.nix
+++ b/home/applications/nix/default.nix
@@ -2,7 +2,6 @@
   home.packages = with pkgs; [
     alejandra
     colmena
-    comma
     deadnix
     nh
     nil
@@ -14,7 +13,6 @@
     nix-update
     nixfmt-rfc-style
     nixpkgs-review
-    nurl
     sops
     statix
   ];
diff --git a/home/applications/swayidle/default.nix b/home/applications/swayidle/default.nix
index cdd83e8..2d868b8 100644
--- a/home/applications/swayidle/default.nix
+++ b/home/applications/swayidle/default.nix
@@ -18,30 +18,21 @@
         timeout = 60 * 9;
         command = "${brightness} -s set 20%";
         resumeCommand = "${brightness} -r";
-      } # dim screen
+      }
       {
         timeout = 60 * 10;
-        command = lock;
-      } # lock screen
-      {
-        timeout = 60 * 20;
-        command = ''${pkgs.sway}/bin/swaymsg "output * power off"'';
-        resumeCommand = ''${pkgs.sway}/bin/swaymsg "output * power on"'';
-      } # turn off screen
-      {
-        timeout = 60 * 30;
         command = "systemctl suspend";
-      } # suspend
+      }
     ];
     events = [
       {
         event = "lock";
         command = lock;
-      } # loginctl lock-session
+      }
       {
         event = "before-sleep";
         command = lock;
-      } # systemctl suspend
+      }
     ];
   };
 }
diff --git a/hosts/dust/default.nix b/hosts/dust/default.nix
index dcdd207..ede10f7 100644
--- a/hosts/dust/default.nix
+++ b/hosts/dust/default.nix
@@ -20,6 +20,8 @@
 
   home-manager.users.guanranwang = import ./home;
 
+  boot.tmp.useTmpfs = true;
+
   services.tailscale = {
     enable = true;
     openFirewall = true;
diff --git a/hosts/dust/home/default.nix b/hosts/dust/home/default.nix
index 6868dae..354f4b1 100644
--- a/hosts/dust/home/default.nix
+++ b/hosts/dust/home/default.nix
@@ -18,14 +18,12 @@
     ];
 
   home.packages = with pkgs; [
-    amberol
     dconf-editor
     file-roller
     fractal
     gnome-calculator
     hyperfine
     loupe
-    mousai
     seahorse
   ];