#[tokio::main]
#[cfg(feature = "ledger")]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    use ethers::{prelude::*, utils::parse_ether};

    // Connect over websockets
    let provider = Provider::new(Ws::connect("ws://localhost:8545").await?);
    // Instantiate the connection to ledger with Ledger Live derivation path and
    // the wallet's index. Alternatively, you may use Legacy with the wallet's
    // index or supply the  full HD path string. You may also provide the chain_id
    // (here: mainnet) for EIP155 support.
    let ledger = Ledger::new(HDPath::LedgerLive(0), 1).await?;
    let client = SignerMiddleware::new(provider, ledger);

    // Create and broadcast a transaction (ENS enabled!)
    // (this will require confirming the tx on the device)
    let tx = TransactionRequest::new().to("vitalik.eth").value(parse_ether(10)?);
    let pending_tx = client.send_transaction(tx, None).await?;

    // Get the receipt
    let _receipt = pending_tx.confirmations(3).await?;
    Ok(())
}

#[cfg(not(feature = "ledger"))]
fn main() {}