local OLD_SPELL_VERSION=""
if spell_ok  $SPELL; then
  OLD_SPELL_VERSION="$(installed_version $SPELL)"
  if test "${VERSION}" != "${OLD_SPELL_VERSION}"; then
    message "This is a possibly incompatible update of $SPELL..."
    message "Figuring out what spells need to be recast, this may take a while."
    for each in $(show_up_depends $SPELL); do
       up_trigger $each cast_self
    done
  fi
fi

