Fix(test-devtools-evm-foundry): remove lz-evm-v1 dependency that breaks external Foundry builds

[Alison024]

Motivation

@layerzerolabs/test-devtools-evm-foundry fails to compile in external Foundry projects (for example when dependencies are installed with Soldeer) because it imports a package that may not be installed transitively.

This blocks users from running forge build / forge test when following the LayerZero Foundry testing flow.

Reproduction

1. Create a new Foundry project.
2. Install dependencies via Soldeer:
   • OpenZeppelin Contracts
   • LayerZero V2
   • LayerZero devtools
3. Add a test based on the LayerZero Foundry example.
4. Run forge build or forge test.

Observed error:

• unresolved import for:
  @layerzerolabs/lz-evm-v1-0.7/contracts/interfaces/ILayerZeroUltraLightNodeV2.sol
• failure originates from:
  packages/test-devtools-evm-foundry/contracts/mocks/DVNMock.sol

Root Cause

DVNMock.sol imported ILayerZeroUltraLightNodeV2 from @layerzerolabs/lz-evm-v1-0.7.

In consumer setups (especially with Soldeer), this deprecated LayerZero V1 package is often not installed, and the package does not need full V1 functionality anyway. As a result, consumers must add custom remappings or manually install an unnecessary/deprecated dependency.

What Changed

• Updated packages/test-devtools-evm-foundry/contracts/mocks/DVNMock.sol

  • removed import of ILayerZeroUltraLightNodeV2 from @layerzerolabs/lz-evm-v1-0.7
  • added a minimal local interface containing only the functions actually used by DVNMock:
    • withdrawNative(address payable,uint)
    • updateHash(uint16,bytes32,uint,bytes32)

• Updated packages/test-devtools-evm-foundry/package.json

  • removed @layerzerolabs/lz-evm-v1-0.7 from:
    • devDependencies
    • peerDependencies

• Rebuilt package artifacts in:

  • packages/test-devtools-evm-foundry/artifacts/*

• Updated lockfile:

  • pnpm-lock.yaml

Why This Fix

• Removes an unnecessary dependency on deprecated V1 package.
• Makes test-devtools-evm-foundry easier to consume in clean Foundry/Soldeer setups.
• Keeps behavior unchanged by preserving only the required interface surface used by the mock.

Impact

• Breaking changes: None expected.
• Runtime behavior: No functional change intended; dependency graph simplified.
• Developer experience: External consumers no longer need extra remappings or manual install of V1 package.

Validation

• Confirmed the package compiles after removing @layerzerolabs/lz-evm-v1-0.7.
• Original reproduction path no longer requires deprecated V1 dependency to resolve imports.

References

• LayerZero Foundry testing example: docs.layerzero.network
• Original V1 interface source (ILayerZeroUltraLightNodeV2): raw.githubusercontent.com
• LayerZero V2 repository: github.com/LayerZero-Labs/LayerZero-v2

[cursor]

PR Summary

Low Risk
Low risk: changes are limited to test/devtool mocks and package metadata, plus regenerated Foundry artifacts; no production contract logic is affected.

Overview
Removes an unnecessary LayerZero V1 dependency that caused external Foundry builds to fail by replacing the lz-evm-v1-0.7 ULNv2 import in DVNMock.sol with a minimal local ILayerZeroUltraLightNodeV2 interface.

Updates package.json dependency declarations accordingly and regenerates the Foundry artifacts/ JSON outputs (including updated compiler metadata such as optimizer settings/EVM version).

^{Reviewed by Cursor Bugbot for commit 17a69cf. Bugbot is set up for automated code reviews on this repo. Configure here.}