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embark-nim-compiler

Plugin for Embark to compile Nim contracts

Installation

Plugin

In your embark dapp directory:

npm install embark-nim-compiler --save or yarn add embark-nim-compiler

then add embark-nim-compiler to the plugins section in embark.json:

{
  "plugins": {
    "embark-nim-compiler": {
      "setupBlockchainOptions": true,
      "libHeraPath": "path/to/libHera.so"
    }
  }
}
  • setupBlockchainOptions: boolean that when set to true, will change the blockchain config for you. If you set this to false, you need to set the blockchain config yourself so that it supports eWasm
  • libHeraPath: string path to the file libHera.so that is used to have Geth use Hera as a VM. Not needed if setupBlockchainOptions is false

Since you need to have Geth+Hera installed, make sure that the built Geth is in your Path or change ethereumClientBin in you blockchain config to point to the Geth executable (absolute path).

Configs

If you plan to use the eWasm testnet, you will need to have an account with tesnet Ether.

You can find the testnet faucet here: http://ewasm.ethereum.org/faucet/

You will need to connect your Metamask extension to the testnet. To do so, either connect it to you local Geth instance or to a hosted node.

Once you have ETH in your account, add it to the accounts section in the blockchain config. You can find information on how to do it here: https://embark.status.im/docs/blockchain_accounts_configuration.html

Temporary endpoint

You can use our temporary endpoint available at http://159.65.52.177:8545/. This endpoint connects to an eWasm testnet node, but we'll probably shut down at some point, so don't rely on it for production.

Requirements

Troubleshooting

If you get an error related to docker or the image jacqueswww/nimclang, you might need to pull it first manually using:

docker pull jacqueswww/nimclang

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Embark plugin to compile Nim contracts

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