diff --git a/setup b/setup
index d924ada..73f1a86 100755
--- a/setup
+++ b/setup
@@ -85,6 +85,12 @@ desktop() {
     if [ -f "/usr/share/sounds/freedesktop/stereo/camera-shutter.oga" ]; then
         sudo mv /usr/share/sounds/freedesktop/stereo/camera-shutter.oga /usr/share/sounds/freedesktop/stereo/camera-shutter-disabled.oga
     fi
+
+    # webp support for eye of gnome image viewer
+    sudo add-apt-repository ppa:helkaluin/webp-pixbuf-loader
+    sudo apt-get update
+    sudo apt install webp-pixbuf-loader
+    xdg-mime default org.gnome.eog.desktop image/webp
 }
 
 docker() {
@@ -221,10 +227,11 @@ obsidian() {
 }
 
 discord() {  # will setup discord and betterdiscord on first run, update both on subsequent runs
-  wget -O discord.deb "https://discord.com/api/download?platform=linux&format=deb" && sudo dpkg -i discord.deb && rm discord.deb
+  if [ "$EUID" -eq 0 ]; then echo "Don't run as root!"; return; fi
   if ! command -v npm &> /dev/null || ! command -v pnpm &> /dev/null; then echo "npm or pnpm not found. Run './setup install_nodejs'"; return; fi
-  cd ~/repos/tools
-  if [ -d ~/repos/tools/BetterDiscord ]; then cd BetterDiscord && git pull; else git clone https://github.com/BetterDiscord/BetterDiscord.git && cd BetterDiscord; fi;
+  cd ~/repos/tools || echo "Error: $HOME/repos/tools does not exist" || exit 1
+  if [ -d ~/repos/tools/BetterDiscord ]; then cd BetterDiscord && git pull; else git clone https://github.com/BetterDiscord/BetterDiscord.git && cd BetterDiscord; fi;  # get latest betterdiscord
+  wget -O discord.deb "https://discord.com/api/download?platform=linux&format=deb" && sudo dpkg -i discord.deb && rm discord.deb  # get latest discord
   pnpm install &&  pnpm build && pnpm inject
   find ~/.dotfiles/desktop/discord/themes -type f -exec ln -sf {} ~/.config/BetterDiscord/themes/ \;
   wget https://discordstyles.github.io/DarkMatter/DarkMatter.theme.css -O ~/.config/BetterDiscord/themes/DarkMatter.theme.css
@@ -255,6 +262,18 @@ spg_vpn() {
     sudo apt-get install virt-viewer
 }
 
+nvidia_optimus() {
+  # TODO iGPU not used / display not working if hybrid / off
+  cd ~/repos/tools
+  if [ -d "envycontrol" ]; then cd envycontrol && git pull; else git clone https://github.com/bayasdev/envycontrol.git && cd envycontrol; fi;
+  sudo pip install .
+  # https://github.com/bayasdev/envycontrol/wiki/Frequently-Asked-Questions#instructions-for-ubuntu-and-its-derivatives
+  sudo prime-select on-demand
+  sudo systemctl mask gpu-manager.service
+  sudo apt-get install -y gnome-tweaks
+  echo "Install the gui manager according to gnome version @ https://github.com/LorenzoMorelli/GPU_profile_selector?tab=readme-ov-file#manual"
+}
+
 # Check if the first argument is the name of a function
 if declare -f "$1" > /dev/null; then
   # Call the function with the rest of the arguments