if spell_ok $SPELL; then
  . "$GRIMOIRE/find_depends.function"

  local OLD_SPELL_VERSION="$(installed_version $SPELL)" &&
  if [[ "${VERSION%.*}" != "${OLD_SPELL_VERSION%.*}" ]]; then
    message
    message "${MESSAGE_COLOR}This is an ABI incompatible update of ${SPELL_COLOR}${SPELL}${MESSAGE_COLOR}..." &&
    message "Determining which spells need to be recast, this may take a while." &&

    local recast_list &&
    local libtool_names="$(find_spell_libtool_archives -L "$SPELL" | xargs basename -a)"
    local so_names="$(find_spell_shared_objects "$SPELL" | xargs readelf -d | sed -n -e '/SONAME/s/^.*\[\([^]]*\).*/\1/p')"

    find_libtool_so_dependencies recast_list "$libtool_names" "$so_names" "$SPELL"

    if [[ -n "${recast_list}" ]]; then
      message "
${SPELL_COLOR}${PROBLEM_COLOR}You are about to upgrade (downgrade) ${SPELL_COLOR}${SPELL}${PROBLEM_COLOR} to a different major version.
All spells that depend on ${SPELL_COLOR}${SPELL}${PROBLEM_COLOR} will need to be recast. To prevent cast
failures due to circular dependencies these spells will be dispelled now
and recast after ${SPELL_COLOR}${SPELL}${PROBLEM_COLOR} has finished casting. Note that if you abort the
cast, or if the cast fails some of these spells may be left dispelled.
It is highly recommended to upgrade (downgrade) ${SPELL_COLOR}${SPELL}${PROBLEM_COLOR} in a separate
cast." &&
      message "${MESSAGE_COLOR}The following spells will be dispelled and recast:" &&
      message $(fold -s -w 72 <<< "${SPELL_COLOR}${recast_list}") &&
      query "${QUERY_COLOR}Do you wish to upgrade (downgrade) ${SPELL_COLOR}${SPELL}${QUERY_COLOR} now?" n &&
      local other_spell &&
      for other_spell in $recast_list; do
        dispel $other_spell &&
        up_trigger $other_spell cast_self
      done
    fi
  fi
fi