Unable to specify custom zksolc compiler

[brotherlymite]

Component

Forge

Have you ensured that all of these are up to date?

• [X] Foundry
• [X] Foundryup

What version of Foundry are you on?

No response

What command(s) is the bug in?

forge 0.0.2 (f505a536 2024-06-26T15:14:31.411368000Z)

Operating System

macOS (Apple Silicon)

Describe the bug

When trying to compile using custom zksolc compiler via using the flag forge build --zksync --zk-solc-path ./path-to-zksolc-compiler flag getting the following error Broken pipe (os error 32).

Also when trying to specify the zksolc compiler in foundry.toml like zksolc='./path-to-compiler', for example when specifying the v1.5.1 compiler executable path and running forge build --zksync v1.4.1 is being downloaded automatically in ~./zksync/ and is being used instead of the zksolc compiler specified.

[Karrq]

Hi! The zksync.solc configuration option (--zk-solc-path) is meant to specify a custom version of solc that zksolc will use, therefore please do not use it to specify a zksolc compiler, which should instead (as you pointed out also) be specified in zksync.zksolc.

We are investigating the issue in regards to v1.5.1 being ignored. We were able to use a specific zksolc by path and it worked without issues, also ensured that zksolc was not downloaded.

Could you check again, ensuring that the configuration looks something like the following?

[profile.default]
src = 'src'
solc='0.8.19'

[profile.default.zksync]
zksolc = "./local_zksolc"
compile = true
fallback_oz = true
mode = '3'

Thank you!

[brotherlymite]

Using [profile.default.zksync] in foundry.toml it worked fine for me. Thank you.