Tip for M1 Users on VRFCoordinator

[JohnEMagee]

Per usual when using the Mac M1, I'm (we?) are stuck using solidity ini the most recent version, for 0.8.12. This becomes tricky in the smart lottery because the chainlink-mix VRFCoordinator is still using 0.6.0. This one was actually EASIER to walk around than others have been in the past.

First - the link for the VRF Coordinator you want to use for Mac M1 is right here

Couple things you need to change.

One - change the pragma to 0.8.12

Secondly there's an import of VRFCoordinatorV2.sol from a dev folder in the git hub and the 0.6.0 also brings in LinkTokenInterface, so I did that for good measure as well

import "@chainlink/contracts/src/v0.8/VRFConsumerBase.sol";
import "@chainlink/contracts/src/v0.8/LinkTokenInterface.sol";

I copied my version 0.8.12 MockAggregator from the Fund Me lesson and both compiled without a hitch which may be the first 'no issue' compile I've had.

Not sure this will help anyone else but wanted to share in case.

[cromewar]

Nice guide @JohnEMagee !!

[JohnEMagee]

One more important note (as I had to delete and reset cause I made a small mistake) - the contract that deploys is NOT VRFCoordinator, but VRFCoordinatorV2Mock - be sure to look in your build/contracts folder to make sure you're calling the right contract