Unable publish source code with solidity version >= 0.8.0

[maxsiz]

Environment information

• brownie Version: 1.14.6
• ganache-cli Version: 0.8.4
• solc Version: 0.8.4
• Python Version: 3.6.9
• OS: linux

What was wrong?

Every time when I try publish multifile source on Etherscan with sol version more then 0.8.0 error is occur.

Verification complete. Result: Fail - Unable to verify

But when i just change solidity version in pragma - all is ok.

I have check in console First.get_verification_info() - So in case sol >= 0.8.0 function return only
first file in sources.

At the same time, the deployment goes well in both cases.

Example sources are below.

pragma solidity ^0.7.4;

File 1 (First.sol)

// SPDX-License-Identifier: MIT
pragma solidity ^0.7.4;
import "./Second.sol";
contract First is Second {
    function name() public view  returns (address) {
        return address(this);
    } 
    function symbol() public view  returns (string memory) {
        return "SYM";
    }
}

File 2 (Second.sol)

// SPDX-License-Identifier: MIT
pragma solidity ^0.7.4;
contract Second {
    function totalSupply() external view returns (uint256) {
        return 7777777777;
    }
}

First.get_verification_info() output

>>> First.get_verification_info()
{
    'bytecode_len': 770,
    'compiler_version': "0.7.4+commit.3f05b770",
    'contract_name': "First",
    'flattened_source': "// SPDX-License-Identifier: MIT

pragma solidity 0.7.4;

// Part: Second

contract Second {
    function totalSupply() external view returns (uint256) {
        return 7777777777;
    }
}

// File: First.sol

contract First is Second {

    function name() public view  returns (address) {
        return address(this);
    }

    function symbol() public view  returns (string memory) {
        return "SYM";
    }

}
",
    'license_identifier': "MIT",
    'optimizer_enabled': True,
    'optimizer_runs': 200
}

pragma solidity ^0.8.4;

File 1 (First.sol)

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "./Second.sol";
contract First is Second {
    function name() public view  returns (address) {
        return address(this);
    } 
    function symbol() public view  returns (string memory) {
        return "SYM";
    }
}

File 2 (Second.sol)

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
contract Second {
    function totalSupply() external view returns (uint256) {
        return 7777777777;
    }
}

First.get_verification_info() output

Brownie environment is ready.
>>> First.get_verification_info()
{
    'bytecode_len': 602,
    'compiler_version': "0.8.4+commit.c7e474f2",
    'contract_name': "First",
    'flattened_source': "// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

// File: First.sol

contract First is Second {

    function name() public view  returns (address) {
        return address(this);
    }

    function symbol() public view  returns (string memory) {
        return "SYM";
    }

}
",
    'license_identifier': "MIT",
    'optimizer_enabled': True,
    'optimizer_runs': 200
}

[iamdefinitelyahuman]

I think the issue is present from 0.8.4 onward. Not sure what changed in that version, but something happened that broke everything.

[maxsiz]

There are a lot of changes but code compiling is OK. Only source collecting is broken https://docs.soliditylang.org/en/breaking/080-breaking-changes.html

[TechNickAI]

I was able to use pragma solidity 0.8.3; and get it to work - so it's something with 0.8.4+

[PatrickAlphaC]

It looks like it might have to do with get_verification_info. If I run get_verification_info on any contract with imports from OZ, it bugs out. Seems like it should be pretty straightforward for one of us to fix.

[PatrickAlphaC]

Yeah get_verification_info seems to be ignoring imports

[PatrickAlphaC]

https://github.com/ethereum/solidity/issues/11643

I think this is the problem

[maxsiz]

@iamdefinitelyahuman I have update brownie up to 1.15.1 but still cant verify code sol version >= 0.8.0. Does work in progress? May be you need some help?

[iamdefinitelyahuman]

is this fixed in v1.15.2 ?

[maxsiz]

Thank you! After brownie compile --all seems that output LockerByBlock.get_verification_info() look well. I`ll check soon on etherscan

[PatrickAlphaC]

https://github.com/ethereum/solidity/issues/11643#issuecomment-891887826

Not sure if this conversation was addressed, haven't had a chance to jump into the brownie code yet.