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I am trying to import the ERC2981.sol from the OpenZeppelin contracts repository. In their GitHub page the royaltyInfo is a public function. But for some reason when I import it in my project, this function is external. This is the function (which is public):

https://github.com/OpenZeppelin/openzeppelin-contracts/blob/5a75065659a65e65bb04890192e3a4bcb7917fff/contracts/token/common/ERC2981.sol#L43

But on Remix this is what it looks like and is external (inside .debs/npm/@openzeppelin/[email protected]/token/commonERC2981.sol)

enter image description here

And this is how I import it:

pragma solidity ^0.8.0;
import "@openzeppelin/[email protected]/token/common/ERC2981.sol";

And I am using 0.8.7+commit.e28d00a7 as a solidity compiler in Remix.

My question is: How can I resolve this issue? I can change the external to public in my hardhat deployment but I don't like to do this (changing manually).

1 Answer 1

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It seems that this change has occurred within the last 3 weeks, and v4.5.0 was released on February 9th. Try using pre-release @4.6.0-rc.0 instead of @4.5.0 in the import statement. Be carful when using these pre releases as there can be bugs. You should be fine, but I would review the code that you are looking at in that GitHub before deploying to Mainnet.

pragma solidity ^0.8.0;
import "@openzeppelin/[email protected]/token/common/ERC2981.sol";
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  • Yeah but this is also not inside the @4.6.0-rc.0 release. I guess they are waiting for "something"?!. I'll wait for an actual release.
    – MehmedB
    Apr 18, 2022 at 23:56
  • Try this import "@openzeppelin/contracts/token/common/ERC2981.sol" Apr 19, 2022 at 2:04
  • I believe that this will pull straight from the Github page with the current changes that have taken effect. Apr 19, 2022 at 2:05
  • It gets the latest release and this is not in the latest release. Maybe I can override this function but how?
    – MehmedB
    Apr 19, 2022 at 11:59
  • 1
    interesting, this worked for me. I'll look at it a bit more tomorrow. Apr 21, 2022 at 4:58

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