cancun

[thedavidmeister]

Motivation

Solution

Checks

By submitting this for review, I'm confirming I've done the following:

• made this PR as small as possible
• unit-tested any new functionality
• linked any relevant issues or PRs
• included screenshots (if this involves a front-end change)

Summary by CodeRabbit

• Chores
  • Updated EVM version in configuration settings
  • Updated internal project dependencies

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[coderabbitai]

Walkthrough

Configuration update to use Cancun EVM version in Foundry and submodule dependency version bump for rain.solmem.

Changes

Cohort / File(s)	Summary
Configuration foundry.toml	EVM version updated from "paris" to "cancun"
Dependencies lib/rain.solmem	Submodule reference advanced to commit f28da2f (from c1c22cf)

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• 2025 09 25 audit #12 — Also updates the lib/rain.solmem submodule reference, specifically advancing from the prior commit that this PR originated from.

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'cancun' refers to the EVM version upgrade (from 'paris' to 'cancun') made in foundry.toml, which is the only substantive change in this pull request.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch 2025-11-30-deps

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[coderabbitai]

Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI

Review profile: ASSERTIVE

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 9c8d6e6 and 5c59d02.

⛔ Files ignored due to path filters (1)

• foundry.lock is excluded by !**/*.lock

📒 Files selected for processing (2)

• foundry.toml (1 hunks)
• lib/rain.solmem (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (3)

• GitHub Check: rainix (ubuntu-latest, rainix-sol-legal)
• GitHub Check: rainix (ubuntu-latest, rainix-sol-static)
• GitHub Check: rainix (ubuntu-latest, rainix-sol-test)

🔇 Additional comments (3)

lib/rain.solmem (2)

1-1: Cancun EVM upgrade is properly configured and verified.

Verification confirms:

• foundry.toml correctly sets evm_version = "cancun"
• No Paris-specific code or workarounds in the codebase that conflict with Cancun semantics
• The rain.solmem dependency is properly locked (rev: f28da2f09d42d154783cb53c138a7ef2f3a9eb4a) and imports work correctly with Cancun

The upgrade is complete with no compatibility issues detected.

---

1-1: Submodule commit f28da2f09d42d154783cb53c138a7ef2f3a9eb4a is already active and compatible with Cancun EVM.

The repository's foundry.toml is already configured for Cancun EVM (evm_version = "cancun"), and no conflicting EVM version references were detected in the codebase. The submodule commit is the current version.

foundry.toml (1)

9-9: Verify Solidity 0.8.25 and Cancun compatibility, and confirm tests pass.

Changing the EVM version from Paris to Cancun may affect compilation behavior and runtime semantics. Cancun introduced new features (blob transactions, BLOBBASEFEE opcode, etc.) that could impact contract behavior or compatibility with dependencies.

Additionally, the PR description is empty with unchecked test items, so explicit verification is needed.

Please confirm the following before merging:

1. Verify that Solidity 0.8.25 properly supports the Cancun EVM target.
2. Confirm that all existing tests pass with the Cancun configuration.
3. Verify that the rain.solmem submodule version bump (c1c22cf → f28da2f) is compatible with Cancun and no breaking changes exist.
4. Check if any contract code needs adjustments for Cancun-specific behavior or new opcodes.

Consider providing motivation for the upgrade in the PR description (e.g., performance improvements, new features, security fixes, or alignment with ecosystem standards).

[coderabbitai]

⚠️ Potential issue | 🔴 Critical

Fill out the PR description with motivation and context.

The PR description is empty with all checklist items unchecked. This violates basic PR requirements and makes it impossible to understand the rationale for the submodule update and EVM version change.

Please provide:

• Motivation: Why is the rain.solmem submodule being upgraded? What issues or features does it address?
• EVM version rationale: Why upgrade from Paris to Cancun? What benefits or requirements drive this change?
• Breaking changes: Document any potential impacts on existing contracts or deployments.
• Testing: Confirm that all checklist items have been addressed (unit tests, small PR size, issue/PR links, screenshots if applicable).