diff --git a/home/rachel.nix b/home/rachel.nix
index 0fc6bad..70d838d 100644
--- a/home/rachel.nix
+++ b/home/rachel.nix
@@ -157,6 +157,29 @@ in rec {
       initExtra = ''
         source ~/.profile
         set -o vi
+
+        norm_name() {
+          ret="$1"
+          [ "$ret" = "''${ret#*\#}" ] && ret="nixpkgs#$ret"
+          printf '%s\n' "$ret"
+        }
+
+        run() {
+          prog="$1"
+          shift
+          nix run "$(norm_name $prog)" "$@"
+        }
+
+        shell() {
+          i=0
+          while [ $i -lt $# ]; do
+            prog="$1"
+            shift
+            set -- "$@" "$(norm_name $prog)"
+            : $(( i++ ))
+          done
+          nix shell "$@"
+        }
       '';
     };
 
@@ -527,6 +550,16 @@ in rec {
         };
       };
     };
+
+    autorandr = {
+      enable = true;
+      hooks.postswitch = {
+        wall = "xwallpaper --zoom \"$HOME\"/img/wallpaper";
+        bar = "systemctl restart --user polybar";
+      };
+      profiles = {
+      };
+    };
   };
 
   services = {
@@ -600,6 +633,7 @@ in rec {
     blueman-applet.enable = true;
     betterlockscreen.enable = true;
     gnome-keyring.enable = true;
+    autorandr.enable = true;
 
   };
 
diff --git a/lambda/configuration.nix b/lambda/configuration.nix
index d5e23d6..501c6e8 100644
--- a/lambda/configuration.nix
+++ b/lambda/configuration.nix
@@ -36,7 +36,7 @@
       DISK_IDLE_SECS_ON_BAT = 5;
       MAX_LOST_WORK_SECS_ON_AC = 15;
       MAX_LOST_WORK_SECS_ON_BAT = 120;
-      CPU_SCALING_GOVERNOR_ON_AC = "performance";
+      CPU_SCALING_GOVERNOR_ON_AC = "auto";
       CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
       CPU_SCALING_MIN_FREQ_ON_AC = 400000;
       CPU_SCALING_MAX_FREQ_ON_AC = 4700000;