Add the Arch package

thinkpad-yoga-rotate/PKGBUILD

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+# Maintainer: oggy <ognjen.maric@gmail.com>
+
+pkgname=thinkpad-yoga-rotate
+pkgver=0.1
+pkgrel=1
+pkgdesc="A small Thinkpad Yoga utility to automatically rotate the screen in tablet mode"
+url="https://github.com/oggy-/thinkpad-yoga-rotate"
+license=('GPL-3')
+arch=('any')
+depends=('xorg-xrandr' 'acpid')
+source=('rotate-screen.sh' 'tablet-mode')
+sha1sums=('81eebe35cbfc61f17ecaef51506cadefc9412155'
+	'adf3aa47174d32f23f4f52186bdc8de07a802ddc')
+
+package() {
+    # "Register" the tablet-mode event and set the handler
+    mkdir -p "$pkgdir/etc/acpi/events"
+    install -m 644 tablet-mode "$pkgdir/etc/acpi/events"
+
+    # Install the handler
+    mkdir -p "$pkgdir/etc/acpi/actions"
+    install -m 644 rotate-screen.sh "$pkgdir/etc/acpi/actions"
+}
+
+
+

thinkpad-yoga-rotate/rotate-screen.sh

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+#!/bin/bash
+
+# Note: xrandr needs to execute in the context of the X server
+
+# Find the user running the X server
+user="$(who -u | grep -F '(:0)' | head -n 1 | awk '{print $1}')"
+
+# A convenience function to run a command in the X server context
+with_display() { DISPLAY=:0.0 su -c "$(printf "%q " "$@")" "$user"; }
+
+# As the same ACPI event is currently emitted for both going in and out
+# of the tablet mode, we need to toggle the orientation
+
+# Figure out the current rotation:
+current=`with_display xrandr -q --verbose | grep eDP1 | cut -d " " -f5`
+
+# Set the next orientation
+case $current in
+    normal)      next=left;;
+    left)        next=normal;;
+esac
+
+with_display xrandr -o $next

thinkpad-yoga-rotate/tablet-mode

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+event=ibm/hotkey LEN0068:00 00000080 000060c0
+action=/etc/acpi/actions/rotate-screen.sh