2025 12 01 deps

[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
  • Upgraded EVM version from Paris to Cancun for enhanced Ethereum compatibility and latest protocol features.
  • Updated core library dependencies to latest versions.
  • Refreshed gas consumption benchmarks and performance metrics.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

Walkthrough

These changes update the EVM compilation target from Paris to Cancun in foundry configuration, update benchmark snapshot metrics for memory KV operations, and advance two submodule pointers to newer commits without modifying any functional code or control flow.

Changes

Cohort / File(s)	Summary
Configuration Updates foundry.toml	Updated evm_version from "paris" to "cancun"
Benchmark Snapshots .gas-snapshot	Updated gas and runtime metrics for LibMemoryKVArrayTest, LibMemoryKVGetSetGasTest, LibMemoryKVGetSetTest, LibMemoryKVSaturateTest, and LibMemoryKVStorageParityTest
Submodule Updates lib/rain.lib.hash, lib/rain.solmem	Advanced submodule pointers to newer commits without code changes

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

• Snapshot updates are numerical and non-functional
• Configuration change is straightforward (EVM version bump)
• Submodule updates are pointer-only with no local code modifications

Pre-merge checks and finishing touches

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title '2025 12 01 deps' is vague and uses generic formatting (date pattern) rather than describing the actual changes—which involve updating benchmark snapshots, changing the EVM version to Cancun, and bumping two submodule dependencies.	Revise the title to clearly describe the main change, such as 'Update dependencies and benchmarks for December 2025' or 'Bump submodule dependencies and upgrade EVM to Cancun'.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
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 2025-12-01-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 ce43236 and 614ce64.

⛔ Files ignored due to path filters (1)

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

📒 Files selected for processing (4)

• .gas-snapshot (1 hunks)
• foundry.toml (1 hunks)
• lib/rain.lib.hash (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 (6)

foundry.toml (3)

1-12: Add substantive PR description and validation checklist.

The PR description is empty/template-only with all checklist items unchecked. For a significant change like an EVM target upgrade, please provide:

1. Motivation: Why upgrade from Paris to Cancun now? (e.g., new opcodes needed, performance improvements, dependency requirements)
2. Solution: What testing was performed? How were the submodule updates validated against Cancun?
3. Checks: Mark checklist items as applicable and confirm:
   • Unit tests pass with Cancun
   • Benchmark snapshots reflect expected changes
   • Submodule versions are tested and compatible
   • No breaking changes introduced

---

10-10: EVM version upgrade verified—but document the change motivation.

✅ Solidity 0.8.25 makes cancun the default EVM version and includes gas savings via better exploitation of the MCOPY opcode. The upgrade is compatible and well-tested.

However, the PR description is still empty/template-only. Please add substantive documentation:

1. Motivation: Why now? (e.g., dependency requirements, performance optimization, community alignment)
2. Impact Summary: Reference the updated benchmarks and confirm gas impact is as expected
3. Testing: Confirm all unit tests pass and submodule versions are compatible with Cancun

---

10-10: EVM version upgrade to Cancun is compatible and well-supported.

Solidity 0.8.25 defaults to Cancun as the EVM target and includes full support for Cancun opcodes (MCOPY, transient storage). The configuration in foundry.toml is standard and poses no compatibility concerns. Benchmark snapshot updates are expected with this EVM version change.

lib/rain.lib.hash (1)

1-1: Verify submodule commit validity and update rationale; PR description appears empty.

The main concern is the lack of explanation for why the lib/rain.lib.hash submodule is being updated to 9677b7063fc9ae8c580636760474719d910c2134. The PR description should include substantive rationale for this dependency update and any breaking changes introduced.

Note: The foundry.toml file already has evm_version = "cancun" set, and all related files (.gas-snapshot, lib/rain.solmem, etc.) do exist in the repository, so those concerns about missing context are not applicable. However, verification of the submodule commit's contents and its compatibility with the current codebase would still be valuable.

lib/rain.solmem (1)

1-1: Document the rationale for these dependency updates and EVM version change.

The PR description lacks substantive content explaining the purpose of these changes. While the updates to foundry.toml (EVM version changed to cancun), .gas-snapshot, and submodules are present in the repository, there is no documented rationale.

The EVM version change from Paris to Cancun is a significant breaking change that requires clear justification. Before approval, please:

1. Document why the EVM version was upgraded to Cancun and any compatibility implications
2. Explain the purpose of the submodule updates (bug fixes, features, security patches, etc.)
3. Verify that the submodule updates contain no breaking changes that affect this library

.gas-snapshot (1)

1-24: Verify the gas snapshot regeneration is intentional and correctly reflects the dependency/configuration changes.

The entire .gas-snapshot file has been regenerated. According to the PR summary, this likely results from:

1. EVM version change: Paris → Cancun (in foundry.toml)
2. Submodule updates: rain.lib.hash and rain.solmem pointers advanced to newer commits

The Paris-to-Cancun EVM version change is significant, as it alters opcode costs and may affect gas measurements across the board. However, the PR description is empty (no Motivation or Solution provided), making it unclear whether these changes are intentional.

Before approving, please confirm:

• These gas snapshot changes are expected due to the EVM version upgrade and submodule updates
• No functional code changes are introducing unexpected gas regressions
• The EVM version change aligns with your project's deployment targets and compatibility goals

[coderabbitai]

⚠️ Potential issue | 🟠 Major

PR description lacks substantive context.

The PR description contains an unchecked template with no content in the Motivation or Solution sections. This makes it difficult to understand the purpose and impact of the dependency updates.

Please update the PR description to include:

• Motivation: Why are these submodule and configuration changes necessary? (e.g., Cancun EVM support, security patches, compatibility fixes)
• Impact: What are the implications of updating to these commits? Any breaking changes, performance improvements, or bug fixes?
• Testing: Confirm that gas benchmarks remain reasonable and all tests pass with the new configurations.

🤖 Prompt for AI Agents

In lib/rain.solmem around lines 1 to 1, the PR description is an unchecked
template with empty Motivation and Solution sections; update the PR description
to include a concise Motivation (why the submodule/config changes are required,
e.g., Cancun EVM support, security or compatibility fixes), an Impact section
(list breaking changes, behavioral differences, performance or gas implications,
and which components/subsystems are affected), and a Testing section (describe
tests performed: unit/integration results, gas benchmarks, CI status, and any
manual checks), and ensure each section gives specific commit references or
config diffs and a short summary of observed results so reviewers can assess
risk and rationale.