post_upgrade() {

  ## search for old location of ipfs data and move data

  if [ -f '/var/lib/ipfs/.ipfs/config' ]; then
    echo ":: ipfs upgrade: stopping ipfs.service if running..."
    systemctl stop ipfs >/dev/null 2>&1 || true
    echo ":: ipfs upgrade: moving existing ipfs data from '/var/lib/ipfs/.ipfs' to '/var/lib/ipfs/'..."
    mv /var/lib/ipfs/.ipfs/* /var/lib/ipfs/ >/dev/null 2>&1 || true
    rmdir /var/lib/ipfs/.ipfs/ >/dev/null 2>&1 || true
  fi

  # in case the daemon was never started, generate a configuration

  if [ ! -f /var/lib/ipfs/config ]; then
    systemctl restart systemd-sysusers.service

    mkdir -p /var/lib/ipfs/

    chown ipfs: -R /var/lib/ipfs/

    su ipfs -s /bin/bash -c "export IPFS_PATH='/var/lib/ipfs/'; ipfs init"

  fi

  # do the repo migration now
  echo "stopping ipfs to check if repo migration is necessary..."
  systemctl stop ipfs >/dev/null 2>&1 || true
  echo "checking/running repo migration..."
  su ipfs -s /bin/bash -c "export IPFS_PATH='/var/lib/ipfs/'; ipfs repo migrate"
  echo "checking/migration completed"
  echo "Please restart your ipfs service manually if necessary"
}

post_install() {

  # do every check an upgrade would do

  post_upgrade
}