# arg 1:  the new package version
post_install() {
   # creates group and user on virgin systems
  if ! getent group courier >/dev/null; then
    groupadd -g 72 courier >/dev/null 2>&1
  fi

  if getent passwd courier >/dev/null; then
    useradd -u 72 -d /var/spool/courier -g courier -s /bin/false courier >/dev/null 2>&1
  fi

  systemd-tmpfiles --create /usr/lib/tmpfiles/courier-authlib.conf
}

# arg 1:  the new package version
# arg 2:  the old package version
post_upgrade() {
    post_install $1
}

# arg 1:  the old package version
pre_remove() {
  userdel courier
  groupdel courier
} >/dev/null 2>&1