turn off internal display if external display is connected

sway/.config/sway/config

@@ -19,29 +19,15 @@ set $term foot
 set $menu wmenu-run
 default_border pixel
 
-### Output configuration
-#
-# Default wallpaper (more resolutions are available in /run/current-system/sw/share/backgrounds/sway/)
-# output * bg /run/current-system/sw/share/backgrounds/sway/Sway_Wallpaper_Blue_1920x1080.png fill
-#
-# Example configuration:
-#
-#   output HDMI-A-1 resolution 1920x1080 position 1920,0
-#
-# You can get the names of your outputs by running: swaymsg -t get_outputs
+# Default: enable laptop screen (internal panel)
+output eDP-1 enable
 
-### Idle configuration
-#
-# Example configuration:
-#
-# exec swayidle -w \
-#          timeout 300 'swaylock -f -c 000000' \
-#          timeout 600 'swaymsg "output * power off"' resume 'swaymsg "output * power on"' \
-#          before-sleep 'swaylock -f -c 000000'
-#
-# This will lock your screen after 300 seconds of inactivity, then turn off
-# your displays after another 300 seconds, and turn your screens back on when
-# resumed. It will also lock your screen before your computer goes to sleep.
+# If HDMI is plugged in, prefer it and disable laptop screen
+exec_always {
+    swaymsg -t get_outputs | grep -q '"name": "HDMI-A-1"' \
+        && swaymsg output HDMI-A-1 enable \
+        && swaymsg output eDP-1 disable
+}
 
 ### Input configuration
 #