[hardhat] network config adds incompatible flags

[BlinkyStitt]

Environment information

• brownie Version: 48d3f18
• hardhat Version: 2.1.3-dtt.0 sha512-QWI3LbImf5vyshQzC2nGxzkgtMHsK5BovcWUMgNl3f/0QGCtVRLhTvkA6/FK0f8XhDkFCOHLsJmyRrt4Ao9grg==
• solc Version: 0.8.3
• Python Version: 3.9.2
• OS: osx and linux

What was wrong?

I'm testing out swapping ganache-cli for hardhat@dtt on the argobytes repo.

I then ran brownie test --network mainnet-fork, but it fails because it tries to use this command:

Launching 'hardhat node --fork https://yournode --port 8575 --chainId 1 --hardfork istanbul'...

Neither --chainId, nor --hardfork are flags in hardhat. You can set them, but instead of with flags, they are set in hardhat.config.js

Workaround

In a separate terminal, run hardhat node --fork https://yournode

How can it be fixed?

Either don't pass these flags, or add them to hardhat.