Beginners question Re: Solidity compiler versions & OpenZeppelin contracts

Support Contracts
,
1

Hi all,

Noob here, so be kind :slight_smile:

'''
I'm following a smart contract development course, from freeCodeCamp, and I have a theoretical question, related to openzeppelin-contracts@4.3.2
'''

Question:-
If I have the following code:

'''
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
contract SimpleCollectible is ERC721 {
// do stuff here
}
'''

...and I want to revert back to an older version that runs with:

pragma solidity ^0.6.0;

Which version of openzeppelin-contracts@x.y.z do I need to use?

'''
i.e. is there a mapping that takes you from:
openzeppelin-contracts@ --> pragma solidity
'''

Thanks in advance for any help offered, I'm still learning this stuff.

Thanks,
Steve

2

The 3.x release line of OpenZeppelin Contracts worked with Solidity 0.6.

However, this is definitely not recommended. What makes you want to use an older compiler?