post_upgrade() {
  if [[ "$2" < "1.1_r330.94454ca4-1" ]]; then
    cat <<EOF
IMPORTANT: As of 1.1_r330, Gate One has been relocated from /opt/gateone to
your system's site-packages directory.  The old location was left alone.  You may
now start Gate One by simply running 'gateone' (it should be in your \$PATH).

Important default file locations (and their respective cli args):

    --settings_dir=/etc/gateone/conf.d
    --certificate=/etc/gateone/ssl/certificate.pem
    --keyfile=/etc/gateone/ssl/keyfile.pem
    --user_dir=/var/lib/gateone/users
    --log_file_prefix=/var/log/gateone/gateone.log
    --pid_file=/var/run/gateone.pid
    
TIP: If you wish to preserve your old settings:
sudo cp /opt/gateone/settings/*.conf /etc/gateone/conf.d/

For more details, please see
https://github.com/liftoff/GateOne/commit/94454ca48b47ef251e72d348e863833910569f14
EOF
  fi
}