Converge on using the "Dev" chainspec instead of AnvilHardhat to avoid inconsistencies#220
Open
Converge on using the "Dev" chainspec instead of AnvilHardhat to avoid inconsistencies#220
Conversation
…d inconsistencies.
Wollac
reviewed
Feb 15, 2026
Contributor
Wollac
left a comment
Wollac
left a comment
There was a problem hiding this comment.
What issues exactly are you observing?
Anvil doesn't have a well-defined EVM version and it depends on whichever revm is bundled in that Foundry release. So the zeth chainspec could end up inconsistent with what Anvil actually executes.
To be really consistent, we should target reth --dev which has a well-defined chainspec (DEV_HARDFORKS, currently up to Prague) that matches our pinned reth v1.10.2. If you still want to use Anvil for convenience, you can emulate it with anvil --chain-id 1337 --hardfork prague.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
When running integration tests including Anvil, I started to hit an issue related to inconsistencies in whether the
DevorAnvilHardhatchainspecs were used. This PR converges onDevto resolve that issue. This requires setting the Anvil chain ID to1337in tests.