post_install() {
  cat << EOF

==> libvisual-plugins has been built with support for "esd" and
==> "jack-audio-connection-kit" input.
==> If you want to use them, install them.

EOF
}

post_upgrade() {
  post_install $1
}

pre_remove() {
  /bin/true
}

op=$1
shift

$op $*