PKGBUILDs/community/cube/cube.install

post_install() {
  getent group games > /dev/null || /usr/sbin/groupadd -g 50 games
cat << EOF
==> To be able to save configs and games,
==> add your user to the games group:
==> # gpasswd -a USERNAME games
EOF
}

post_upgrade() {
  post_install $1
}