Development Setup Guide

The Complete Setup Guide for a Chainlink Development Environment

Install Go, Git, developer tools, Python (2.7), curl

Debian-based Linux (Ubuntu, Mint, etc.)

sudo apt install -y git build-essential python curl

Red Hat-based Linux (CentOS, Fedora, etc.)

sudo yum groupinstall -y 'C Development Tools and Libraries' 
sudo yum install -y git python curl

Mac OSX

brew install git curl golang

Windows-based environments can follow the instructions here.

After this point, instructions should be general for any *nix flavored operating system.

Install Node.JS v10.15

Install Yarn

npm install -g yarn

Download Go (if not previously installed)

Setup paths

If needed, adjust the location of your Go installation and .bashrc to your setup.

mkdir -p ~/go/bin
export GOPATH=~/go
export PATH=$PATH:/usr/local/go/bin:~/go/bin
echo "export GOPATH=$GOPATH" >> ~/.bashrc
echo "export PATH=$PATH" >> ~/.bashrc
source ~/.bashrc

Download Chainlink and install dependencies

git clone https://github.com/smartcontractkit/chainlink.git
cd chainlink
make install

The first time running make install will take a while to finish.

Once complete, you can run chainlink -h to check that the binary was created.

For local development, tools are available in the tools/bin/ directory:

• cldev: sets environment variables and runs the source of the node directly
• gethnet: (requires Geth to be installed) runs a local Geth Ethereum instance
• devnet: (requires Docker to be installed) runs a local Parity Ethereum instance

Working with contracts

cd evm
yarn install
yarn test

More

See our Development Tips for more information on the tools we've set up to make developing Chainlink easier.