avalanchego coreth communcation

[huahuayu]

Hi, I can see that coreth is avalanchego's plugin, and is implemented by go-plugin, also in the doc there is a sinppets shows how to make a plugin to communicate with avalanchgo by grpc.

But in discord developer-chat, @jpop32 said coreth is in-process to avalanchego so it probably doesn't use grpc. Subnet VMs do which makes me very confused.

coreth do started a grpc server(link) , it's useless?

    plugin.Serve(&plugin.ServeConfig{
        HandshakeConfig: rpcchainvm.Handshake,
        Plugins: map[string]plugin.Plugin{
            "vm": rpcchainvm.New(&evm.VM{}),
        },

        // A non-nil value here enables gRPC serving for this plugin...
        GRPCServer: plugin.DefaultGRPCServer,
    })

Could someone clarify this?

[StephenButtolph]

Coreth has been inlined directly into Avalanchego in official releases since v1.7.4. Coreth is still compatible to be run as a plugin, which has been very useful in testing of further plugin improvements.

[huahuayu]

hi, @StephenButtolph thanks for clarifying. I just checked the release v1.7.4, and found your commit 7dd7bea the title is "inlined the evm", but the change is simple, basically, one line effectively makes it inlined?

 		n.Config.VMManager.RegisterFactory(evm.ID, &coreth.Factory{}),

If it's inlined, suppose coreth no need to compile and put the binary at a specific dir, which is later invoked by avalanchego. But now we still need to pre compile coreth at first, how's that?