Foundry

Foundry

A place to ask questions and share tips/tricks for using Foundry.

Max Jackson pfp

Working on something & I could use some foundry guidance. I ran foundryup and forge upgrade while working on this project, suddenly I'm getting these "identifier already declared" errors in files where there are not duplicate imports! Am I looking in the wrong place? Has anyone encountered this type of error?

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zerosnacks.eth pfp

As preparation for Foundry's upcoming v1.1 release, please try out the new release candidate 😀 $ foundryup -i rc https://github.com/foundry-rs/foundry/releases/tag/rc

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Shushant pfp

@0xshushant.eth

Fun fact: All of /definitive $EDGE contract addresses were mined using `cast create2 ` on foundry :) - Token: 0xED6E000dEF95780fb89734c07EE2ce9F6dcAf110 - Staking: 0xdefed6eE363Cc984756566726073ed4d0BC68bde - Airdrop: 0xA12d20Fd3d9188300B1460952b2B57C7384d1B69

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Greg pfp

Am I missing something or is there no way to verify multichain deployments in a single forge command?

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zerosnacks.eth pfp

Reminder! https://x.com/zerosnacks/status/1902791950928900599?s=46

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zerosnacks.eth pfp

gm! You may be looking for the 1.0 migration guide if you are experiencing CI failures this morning. 1.0 has now been marked as stable and is installed by default with the Foundry Toolchain. https://book.getfoundry.sh/guides/v1.0-migration

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zerosnacks.eth pfp

FOUNDRY 1.0 IS HERE https://www.paradigm.xyz/2025/02/announcing-foundry-v1-0

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emo.eth pfp

before i roll my own: does anybody have any good permit2 fixtures (signing, etc) for foundry tests?

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zerosnacks.eth pfp

Improved docs for multichain scripting ✨ https://book.getfoundry.sh/forge/deploying#multi-chain-deployments

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emo.eth pfp

`forge build` should include "loading screen tips" for smart contract best-practices

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zerosnacks.eth pfp

Easy to miss if you are ahead of the curve and already experimenting with EIP-7702 Set your `evm_version` to `prague` For Anvil pass `--hardfork prague` Alternatively you can pass the `--odyssey` flag when running commands https://book.getfoundry.sh/reference/config/solidity-compiler#evm_version

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shazow pfp

If you're using foundry with nix, we just added a `stable` branch to your fav foundry nix flake to match the new stable release stream. $ nix run github:shazow/foundry.nix/stable (Default branch is nightly which has ephemeral builds, we also have a /monthly branch which is non-ephemeral nightlies once per month.)

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zerosnacks.eth pfp

For all our latest updates and action items please check out the announcements page of the Foundry book to stay up to date https://book.getfoundry.sh/announcements

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emo.eth pfp

are forge/cast still bad at estimating gas for arbitrum?

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zerosnacks.eth pfp

Reminder: if you recently updated Foundry and your build starts breaking with stack too deep set `optimizer = true` in your foundry.toml We’ve recently stopped enabling the optimizer by default and now require you to enable it explicitly https://github.com/foundry-rs/foundry/issues/2486

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