cancun

[thedavidmeister]

Motivation

Solution

Checks

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• 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 configuration to Cancun.

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[coderabbitai]

Walkthrough

Updated the EVM version configuration in foundry.toml from "paris" to "cancun" and removed the associated compatibility comment. This change updates the Solidity compilation target version for the project.

Changes

Cohort / File(s)	Summary
Configuration update foundry.toml	Updated evm_version from "paris" to "cancun"; removed preceding compatibility comment

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

• Straightforward configuration value change with no logic modifications or side effects

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' directly refers to the EVM version update from 'paris' to 'cancun' in foundry.toml, which is the main change in this PR.
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 2025-12-05-cancun

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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 f84537a and 1251d18.

📒 Files selected for processing (1)

• foundry.toml (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: standard-tests (ubuntu-latest, rainix-sol-legal)
• GitHub Check: standard-tests (ubuntu-latest, rainix-sol-test)
• GitHub Check: standard-tests (ubuntu-latest, rainix-sol-static)

[coderabbitai]

⚠️ Potential issue | 🟠 Major

🧩 Analysis chain

🏁 Script executed:

# Read the foundry.toml file to see full context
cat foundry.toml

Repository: rainlanguage/rain.factory

Length of output: 478

---

🏁 Script executed:

# Search for any references to Cancun or Paris EVM versions in the codebase
rg -i "cancun|paris" --type-list | head -20

Repository: rainlanguage/rain.factory

Length of output: 458

---

🏁 Script executed:

# Look for Solidity code that might use push0 or other Cancun opcodes
rg "push0|mcopy|tstore|tload" --type solidity

Repository: rainlanguage/rain.factory

Length of output: 101

---

🏁 Script executed:

# Check for any documentation or comments about EVM version requirements
rg -i "evm.*version|cancun|paris" . --type md --type txt

Repository: rainlanguage/rain.factory

Length of output: 51

---

🏁 Script executed:

# Check git history for this file if available
git log --oneline foundry.toml 2>/dev/null | head -10

Repository: rainlanguage/rain.factory

Length of output: 83

---

Provide context for the EVM version upgrade and verify Cancun compatibility.

The EVM version has been upgraded from "paris" to "cancun", and the preceding compatibility comment has been removed. However, this change lacks documented motivation or context.

Before approving:

1. Clarify the rationale: Why is the project upgrading to Cancun? Are new Cancun opcodes required, or is this general modernization?
2. Verify compatibility: Confirm that all existing contracts have been tested against the Cancun EVM without breaking changes.
3. Document implications: If this affects downstream users or deployed contracts, communicate clearly.

🤖 Prompt for AI Agents

In foundry.toml around line 12, the EVM version was changed to "cancun" without
context or verification; add a brief comment above evm_version explaining the
rationale for upgrading (e.g., required Cancun opcodes or modernization), run
and document full test coverage of all existing contracts against the Cancun EVM
(unit/integration and any gas/bytecode comparisons) to confirm no breaking
changes, and update project/docs/CHANGELOG or include a note for downstream
users about potential implications; if compatibility cannot be confirmed, revert
to the previous version until testing and communication are complete.