Signing Celo transaction using a Ledger and ethers-rs

main.rs

use ethers::prelude::{HDPath, Signer, SignerMiddleware, TransactionRequest};
use ethers::providers::*;
use ethers::signers::Ledger;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let chain_id: u64 =  44787;
    let rpc = "https://alfajores-forno.celo-testnet.org";
    println!("using rpc provider: {}", rpc);
    println!("chain id: {}", chain_id);
    let provider = Provider::<Http>::try_from(rpc).unwrap();
    let provider_chainid = provider.get_chainid().await?;
    println!("provider chain id:{:?}", provider_chainid);
    let ledger = Ledger::new(HDPath::LedgerLive(0), 1).await?.with_chain_id(chain_id);
    let address = ledger.address();
    println!("address:{:?}", address);
    println!("chain id: {}", ledger.chain_id());

    let client = SignerMiddleware::new(provider, ledger);
    let tx = TransactionRequest::pay(address, 0);
    println!("{:?}", tx);
    let pending_tx = client.send_transaction(tx, None).await?;

    Ok(())
}