post_install() {
  chgrp games /usr/share/lander/lander.hs
  chmod g+w /usr/share/lander/lander.hs

  echo "Add user to group games to be able to save highscores"
  /bin/true
}

post_upgrade() {
/bin/true
}

pre_remove() {
/bin/true
}

op=$1
shift

$op "$@"