I'm trying to deploy an interface from Chainlink and I have in my solidity contract the import for the AggregatorV3Interface:

pragma solidity 0.6.6;

import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol";

and the following remappings in the brownie-config.yaml:

   - smartcontractkit/[email protected]

     - '@chainlink=smartcontractkit/[email protected]'

But while compiling the contract brownie compile, I run into the error:

contracts/Lottery.sol:5:1: ParserError: Source "@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol" not found: File outside of allowed directories.
import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol";

It looks like Solidity cannot find the interface. Can anybody explain to me where exactly these chainlink contracts are taken from? Do I need to clone the chainlink repository locally?

Thanks a lot

1 Answer 1


I found kind of a solution, maybe helpful for somebody else.

  1. use yarn to install @chainlink/contracts
yarn add @chainlink/contracts

this creates a subdirectory node_modules/ including @chainlink/contracts.

  1. change the import to
import "node_modules/@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

Like this I can compile the contract in brownie without errors.

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