Solution for (Failed to install solc 0.8.20)

[jyotirmoydotdev]

Just want to let you know that if you are facing an error while running forge create command for your smart contract project, there is a solution for you! The error message might look something like this:

➜  Smart-Contract-Foundry git:(main) ✗ forge create Counter --interactive
[⠊] Compiling...
[⠃] Installing solc version 0.8.20
[⠊] Failed to install solc 0.8.20: error sending request for url (<https://raw.githubusercontent.com/alloy-rs/solc-builds/5560a1f4b69f081d120b0df1735bf87cdda2e6b5/macosx/aarch64/list.json>): error trying to connect: tcp connect error: Operation timed out (os error 60)
Error:
error sending request for url (<https://raw.githubusercontent.com/alloy-rs/solc-builds/5560a1f4b69f081d120b0df1735bf87cdda2e6b5/macosx/aarch64/list.json>): error trying to connect: tcp connect error: Operation timed out (os error 60)

Context:
- Error #0: error trying to connect: tcp connect error: Operation timed out (os error 60)
- Error #1: tcp connect error: Operation timed out (os error 60)
- Error #2: Operation timed out (os error 60)

solution

First, install solidity with the following command:

brew update
brew upgrade
brew tap ethereum/ethereum
brew install solidity

Once you have installed solidity, copy the installed directory address which you get with the command brew info solidity. You only need the path up to the bin directory. For example:

/opt/homebrew/Cellar/solidity/0.8.20/bin

Next, navigate to the main directory of your project and open the foundry.toml file. This file contains configuration details for your project. Add the following line to the file:

solc = "<path-to-solc>"

Replace <path-to-solc> with the bin directory path you copied earlier. For example:

solc = "/opt/homebrew/Cellar/solidity/0.8.20/bin/solc"

The full code should look like this.

[profile.default]
src = "src"
out = "out"
libs = ["lib"]
solc = "/opt/homebrew/Cellar/solidity/0.8.20/bin/solc"

# See more config options https://github.com/foundry-rs/foundry/tree/master/config

Save the file and exit. Now try running the forge create command again. It should run without any errors.

By following these steps, you should be able to successfully resolve the solc installation error and create your smart contract project with ease. Good luck coding!

[PatrickAlphaC]

Thank you for this!