nix: Make nix the root

Which means now I'll have to think about real prefixes in commit names.

unprocessed/config/polybar/launch.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env sh
+
+# Terminate already running bar instances
+killall -q polybar
+
+# Wait until the processes have been shut down
+while pgrep -x polybar >/dev/null; do sleep 1; done
+
+# Getting some vars
+primary=$(xrandr | grep primary | head -1 | cut -d' ' -f1)
+export ethI=$(/bin/ls /sys/class/net/ | grep ^enp* | head -1)
+export wlanI=$(/bin/ls /sys/class/net/ | grep ^wl* | head -1)
+
+# Launch bar for each display
+polybar -m | cut -d':' -f1 | while read display
+do
+    export display=$display
+    if [ "$display" == "$primary" ]
+    then
+        bar="primary"
+    else
+        bar="secondary"
+    fi
+    polybar -q $bar -c ~/.config/polybar/config.ini &
+done
+
+echo "Bars launched..."
+