Cargo.toml missing expected `package` or `project` fields

[Alex]

Hi, I'm new to rust, I've been very interested in the implementation of nakamoto's lightweight node. I have had some problems during installation and configuration.

In the Cargo.ml file I have the following parameters:

[dependencies]
cargo-edit = "0.7.0"
nakamoto-client = "0.2.0"

But when executing the command: cargo add nakamoto-client it gives me the following error:

[root@nakamoto ~]# cargo add nakamoto-client
    Updating 'https://github.com/rust-lang/crates.io-index' index
      Adding nakamoto-client v0.2.0 to dependencies
Command failed due to unhandled error: Cargo.toml missing expected `package` or `project` fields

I already have cargo_edit installed.

What could be happening?

Regards

[Alexis Sellier]

I had never heard of cargo-edit, but I tried it out with a fresh project and it seems to work fine here:

mkdir test-project
cd test-project
cargo init
cargo install cargo-edit
cargo add nakamoto-client
    Updating 'https://github.com/rust-lang/crates.io-index' index
      Adding nakamoto-client v0.2.0 to dependencies

Could it be that cargo-edit is complaining about your Cargo.toml?

[Alex]

Dear,

I have been able to complete the installation, I did not have the manifest file well configured.

But when trying to run the test script to sync the node I get the following error:

I run the line:

cargo run --release -p nakamoto-node -- --testnet

and I get the following error:

[root@nakamoto ~]# cargo run --release -p nakamoto-node -- --testnet
   Compiling nakamoto-node v0.1.0 (/root)
error[E0433]: failed to resolve: maybe a missing crate `nakamoto`?
 --> test.rs:5:5
  |
5 | use nakamoto::client::{Client, Config, Network};
  |     ^^^^^^^^ maybe a missing crate `nakamoto`?

error[E0433]: failed to resolve: maybe a missing crate `nakamoto`?
 --> test.rs:6:5
  |
6 | use nakamoto::client::error::Error;
  |     ^^^^^^^^ maybe a missing crate `nakamoto`?

error[E0433]: failed to resolve: maybe a missing crate `nakamoto`?
 --> test.rs:7:5
  |
7 | use nakamoto::client::handle::Handle as _;
  |     ^^^^^^^^ maybe a missing crate `nakamoto`?

error[E0433]: failed to resolve: use of undeclared type `Network`
  --> test.rs:17:18
   |
17 |         network: Network::Testnet,
   |                  ^^^^^^^ use of undeclared type `Network`

error[E0433]: failed to resolve: use of undeclared type `Config`
  --> test.rs:18:11
   |
18 |         ..Config::default()
   |           ^^^^^^ use of undeclared type `Config`

error[E0433]: failed to resolve: use of undeclared type `Client`
  --> test.rs:21:18
   |
21 |     let client = Client::<Reactor>::new(cfg)?;
   |                  ^^^^^^ use of undeclared type `Client`

error[E0412]: cannot find type `Error` in this scope
  --> test.rs:15:25
   |
15 | fn main() -> Result<(), Error> {
   |                         ^^^^^ not found in this scope
   |
help: consider importing one of these items
   |
3  | use std::error::Error;
   |
3  | use std::fmt::Error;
   |
3  | use std::io::Error;
   |

error[E0422]: cannot find struct, variant or union type `Config` in this scope
  --> test.rs:16:15
   |
16 |     let cfg = Config {
   |               ^^^^^^ not found in this scope

error: aborting due to 8 previous errors

Some errors have detailed explanations: E0412, E0422, E0433.
For more information about an error, try `rustc --explain E0412`.
error: could not compile `nakamoto-node`

To learn more, run the command again with --verbose.
[root@nakamoto ~]#

In Cargo.toml I have it configured as follows:

[dependencies]
cargo-edit = "0.7.0"
nakamoto-client = "0.2.0"
nakamoto = "0.2.0"


[project]
name = "nakamoto-node"
version = "0.1.0"

[package]
name = "nakamoto"
version = "0.1.0"
authors = ["Alex <[e-mail]>"]
edition = "2021"

[[bin]]
name = "test"
path = "test.rs"

[workspace]
members = [""]

In test.rs I have the test scripts: (by cloudhead.io)

//! A trivial example of a client that connects to the Bitcoin
//! testnet and syncs the chain.
use std::{net, thread};

use nakamoto::client::{Client, Config, Network};
use nakamoto::client::error::Error;
use nakamoto::client::handle::Handle as _;

/// The network reactor we're going to use. This one ships with Nakamoto,
/// as part of the `nakamoto-net-poll` crate. It's a single-threaded
/// reactor using non-blocking sockets and `poll(2)`.
type Reactor = nakamoto::net::poll::Reactor<net::TcpStream>;

/// Run the light-client.
fn main() -> Result<(), Error> {
    let cfg = Config {
        network: Network::Testnet,
        ..Config::default()
    };
    // Create a client using the above network reactor.
    let client = Client::<Reactor>::new(cfg)?;
    let handle = client.handle();

    // Run the client on a different thread, to not block the main thread.
    thread::spawn(|| client.run().unwrap());

    // Wait for the client to be in sync with the blockchain.
    handle.wait_for_ready()?;

    // The client is in sync. Ask it to shutdown.
    handle.shutdown()?;

    Ok(())
}

What could be happening?
Regards,

Alex

[Alexis Sellier]

This is very confusing, I would start by not naming your package "nakamoto", as that is the name of this package too. You should also probably remove the [project] section, I'm not sure what that does, it's surely not needed.

Once you've cleaned that up, try running just cargo check --all and post the result here.

[Alex]

Hello,
I have removed the [project] section and renamed the package name.

In Cargo.toml we have:

[dependencies]
cargo-edit = "0.7.0"
nakamoto-client = "0.2.0"
nakamoto = "0.2.0"

[package]
name = "n201t"
version = "0.1.0"
authors = ["Alex <[e-mail]>"]
edition = "2018"

[[bin]]
name = "test"
path = "test.rs"

[workspace]
members = [""]

When executing cargo check --all I get the following:

[root@nakamoto ~]# cargo check --all
    Checking n201t v0.1.0 (/root)
    Finished dev [unoptimized + debuginfo] target(s) in 0.26s

Then when executing the following line:

cargo run --release -p n201t -- --testnet
I have the following result:

[root@nakamoto ~]# cargo run --release -p n201t -- --testnet
   Compiling n201t v0.1.0 (/root)
    Finished release [optimized] target(s) in 25.03s
     Running `target/release/test --testnet`
Error: Handle(Timeout)

There you can see: Error: Handle (Timeout)

[Alexis Sellier]

Ok, better. To find out exactly what is happening you should setup logging. Check out the node package for a fuller example: https://github.com/cloudhead/nakamoto/tree/master/node

[Alex]

I have managed to solve the problem, the chain is synchronizing.
I was missing cloning some missing directories from github.
The question I have now is how do I connect my wallet to the node, what is the instruction that I should place to connect a wallet to the node. Is this instruction valid?:

cargo run --release -p nakamoto-wallet -- --debug --genesis 0 --connect
What ports should I use?

[Alexis Sellier]

cargo run is only meant to be used inside the project you want to run. Since nakamoto-wallet is part of the nakamoto crate, you'd have to run that command inside that directory.

Now, nakamoto-wallet is not a complete wallet, it's just a simple watcher that will tell you for a given address, what your balance is. It'll run its own nakamoto-client, so it won't connect to the other one you ran.

Nakamoto is meant to be used as a backend and p2p client to wallet software. It's a library that you must integrate in your wallet software.