post_install() {
  echo 'Dropbox has its own automatic update mechanism. If you wish to rely on the package manager, '
  echo 'Please do as follows: '
  echo '  rm -rf ~/.dropbox-dist'
  echo '  install -dm0 ~/.dropbox-dist'
  echo 'Read: https://wiki.archlinux.org/index.php/Dropbox#Hack_to_stop_Auto_Update'
  echo 'for more informations.'
}

post_upgrade() {
  post_install
}