Solidity Version Mismatch in Hardhat (0.8.20 vs. 0.8.26)

[inspirezuza]

I'm encountering a Solidity version mismatch when trying to compile my Hardhat project. My hardhat.config.ts specifies Solidity 0.8.20, but my yarn.lock file has [email protected], which causes a compilation error:

// Staker.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.20; //Do not change the solidity version as it negatively impacts submission grading

Source file requires different compiler version (current compiler is 0.8.26+commit.8a97fa7a.Emscripten.clang)

Project Details

• Hardhat Config (hardhat.config.ts):

  const config: HardhatUserConfig = {
    solidity: {
      compilers: [
        {
          version: "0.8.20",
        },
      ],
    },
  };

• Yarn Lock (yarn.lock extract):

  "solc@npm:0.8.26": 
    version: 0.8.26
  

• Error Message:

  Source file requires different compiler version (current compiler is 0.8.26+commit.8a97fa7a.Emscripten.clang)
  

Steps to Reproduce

npx [email protected] -e challenge-1-decentralized-staking challenge-1-decentralized-staking

I’m wondering would simply updating Hardhat to use 0.8.26 be safe, or could it affect grading?

[rin-st]

Could you say exactly how to reproduce the error?

yarn deploy works for me without errors

npx [email protected] -e challenge-1-decentralized-staking challenge-1-decentralized-staking command from Steps to Reproduce too