PKGBUILDs/core/initscripts/initscripts.install

post_upgrade() {
  if [ "$(vercmp $2 2009.07)" -lt 0 ]; then
    echo "==> Adjusting /etc/inittab for transition to /dev/tty standard."
    echo "==> Original file saved as /etc/inittab.pacsave"
    sed -i'.pacsave' 's#vc/\([0-9]\)#tty\1#' /etc/inittab
  fi
  if [ "$(vercmp $2 2011.06.1)" -lt 0 ]; then
    echo "Blacklisting of modules is no longer supported in rc.conf,"
    echo "please add blacklist entries to /etc/modprobe.d/ instead."
  fi
  if [ "$(vercmp $2 2011.07.2)" -lt 0 ]; then
    echo "VERBOSE= in rc.conf no longer has any effect."
    echo "Please append 'quiet' to your kernel command line."
  fi
  if [ "$(vercmp $2 2011.10.1)" -lt 0 ]; then
    echo "If using non-bash-compatible shell, please set LANG in /etc/locale.conf,"
    echo "as LOCALE in /etc/rc.conf no longer works."
  fi
  if [ "$(vercmp $2 2012.08.1)" -lt 0 ]; then
    echo "----"
    echo "> initscripts now ships a compatibility layer to make systemd use MODULES and"
    echo "> DAEMONS from rc.conf; and run rc.local and rc.local.shutdown on boot and"
    echo "> shutdown, respectively. Refer to arch-modules-load(8) and arch-daemons(8)."
    echo "----"
  fi
}