# versions before 4.x (api 4) were 0.x (api 3)
local OLD_SPELL_VERSION=""
if spell_ok $SPELL; then
  OLD_SPELL_VERSION="$(installed_version $SPELL)"
  if [[ ${OLD_SPELL_VERSION:0:3} == '4.1' ]]; then
    message "This is an incompatible update of libdvdread..."
    message "Figuring out what spells need to be recast, this may take a while."
    for each in $(show_up_depends $SPELL 1); do
      if gaze install $each | xargs readelf -d 2> /dev/null |
         grep -q "NEEDED.*libdvdread.so.4"; then
           up_trigger $each cast_self
      fi
    done
  fi
fi