conflicts apache &&
conflicts apache-mod_ssl &&
conflicts apache2 &&
conflicts apache22 &&
conflicts httpd-dev &&
if spell_ok xshttpd; then
  persistent_read xshttpd XSHTTPD_USE_PREFIX XSHTTPD_USE_PREFIX &&
  if [[ "$XSHTTPD_USE_PREFIX" != "y" ]]; then
    message "apache22 and xshttpd both provide the httpd binary, recast xshttpd with the binary prefix if you wish to keep both spells installed." 1>&2
    conflicts xshttpd
  fi
fi

.