# wait_for_package_manager
#
# * installation will break if we try to install when package manager is running
#
wait_for_package_manager()
{
	# exit if package manager is running in the back
	while true; do
		if [[ "$(fuser /var/lib/dpkg/lock 2>/dev/null; echo $?)" != 1 && "$(fuser /var/lib/dpkg/lock-frontend 2>/dev/null; echo $?)" != 1 ]]; then
				display_alert "Package manager is running in the background." "Please wait! Retrying in 30 sec" "wrn"
				sleep 30
			else
				break
		fi
	done
}