Lesson 6: Error Compiling MockV3Aggregator

[karlMoreno]

Hi! I went to compile MockV3Aggregator but was hit with a solidity version error saying I was compiling from 8.11 when my settings and my remote was compiled to 0.6.0. Curiously enough, this was fixed when in my settings.json in my .vscode folder and my config file when I added this:

dependencies:

- <organization/repo>@

• smartcontractkit/[email protected]
• smartcontractkit/[email protected]
  compiler:
  solc:
  remappings:
  • '@chainlink=smartcontractkit/[email protected]'
  • '@chainlink=smartcontractkit/[email protected]'

Now all I get is the error:
CompilerError: solc returned the following errors:

contracts/test/MockV3Aggregator.sol:4:1: ParserError: Source "/root/.brownie/packages/smartcontractkit/[email protected]/contracts/src/v0.6/interfaces/AggregatorV2V3Interface.sol" not found: File not found.
import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV2V3Interface.sol";
^----------------------------------------------------------------------------^

[cromewar]

Hello @karlMoreno If you take a look at chainlink mix: https://github.com/smartcontractkit/chainlink-mix you can see that direction does not exists, could you please share your brownie config.yaml?

[karlMoreno]

This is the brownie-config.yaml file

When I remove everything else and write brownie compile in my terminal I get:

ParserError: Source file requires different compiler version (current compiler is 0.8.11+commit.d7f03943.Linux.g++) - note that nightly builds are considered to be strictly less than the released version
--> /root/.brownie/packages/smartcontractkit/[email protected]/contracts/src/v0.6/vendor/SafeMathChainlink.sol:2:1:
|
2 | pragma solidity ^0.6.0;
| ^^^^^^^^^^^^^^^^^^^^^^^

despite being in the 0.6.0 remote global compiler version

so when I right click and hit compile with configured remote version I get this:

Retrieving compiler information:
Compiler using remote version: 'v0.6.0+commit.26b70077', solidity version: 0.6.0+commit.26b70077.Emscripten.clang
/Users/karlmoreno/work/Blockchain/demos/brownie_fund_me/contracts/test/MockV3Aggregator.sol:4:1: ParserError: Source "@chainlink/contracts/src/v0.6/interfaces/AggregatorV2V3Interface.sol" not found: File import callback not supported
import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV2V3Interface.sol";
^----------------------------------------------------------------------------^

Compilation failed with 1 errors

[karlMoreno]

I fixed the compiler version by setting sold to 0.6.0 in my brownie-config.yaml file:

but now i get this error:

and it doest work with chainlink-brownie-contract versions 0.2.2 or 0.3.1

[karlMoreno]

Issue resolved when in brownie-config.yaml file i set

solc:
version 0.6.6

and in the the MockV3Aggregator file I changed from:

pragma solidity ^0.6.0;

to:

pragma solidity >=0.6.0;

[cromewar]

Nice catch; I'm glad is solved now.