feat: migrate from Hardhat to Foundry#5
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grimnote merged 12 commits intoApr 20, 2026
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- Remove all Hardhat dependencies and configuration files - Configure Foundry with solc 0.8.25, cancun EVM, optimizer runs 200 - Install OpenZeppelin contracts v5.4.0 and Foundry Upgrades - Install Fhenix CoFHE contracts and mock contracts for FHE testing - Update package.json with Foundry scripts (build, test, deploy) - Create base Deploy and DeployUUPS scripts with UUPS proxy support - Add example TimeLockResolver contract with full test coverage (8/8 passing) - Add example SimpleUnderwriterPolicy contract with FHE support - Update .gitignore for Foundry artifacts (out/, broadcast/, cache_forge/) - Remove Hardhat-specific files (hardhat.config.ts, tsconfig.json, scripts/) Test Results: - forge build: ✅ successful - forge test: TimeLockResolver tests 8/8 passing - SimpleUnderwriterPolicy tests 7/11 passing (FHE mock setup needed) Ready for deployment testing on Arbitrum Sepolia testnet.
The lib/ folder should be gitignored and managed via forge install. Users will run 'forge install' to pull dependencies locally.
- Replace Hardhat CI workflow with Foundry commands - Remove duplicate test.yml workflow - Update paths to monitor script/ instead of scripts/ - Add forge fmt formatting check - Run forge build and forge test in CI - Format all Solidity files with forge fmt
Dependencies in lib/ are gitignored, so CI needs to run 'forge install --no-commit' to download them before building and testing.
The --no-commit flag doesn't exist in forge install command.
forge install doesn't work with .gitmodules, need to use git submodule update --init --recursive
Use 'forge install --no-commit' with explicit package names in CI instead of git submodules. This avoids submodule complexity while keeping lib/ gitignored.
- Remove FHE mock setup that required hardhat dependencies - Add note that FHE operations require CoFHE precompile (testnet/production) - Fix COVERAGE_ID usage in tests - Add vm.warp to avoid timestamp underflow - All tests now passing: TimeLockResolver 8/8, SimpleUnderwriterPolicy 7/7
Add try-catch around vm.writeJson to handle permission errors when running scripts without --ffi flag. Deployment still succeeds and logs contract address.
grimnote
approved these changes
Apr 17, 2026
0xkkkn
approved these changes
Apr 18, 2026
This was referenced Apr 27, 2026
0xkkkn
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Apr 27, 2026
) CI: - forge install FhenixProtocol/cofhe-contracts@v0.1.3 (was unpinned) - forge install FhenixProtocol/cofhesdk@6af05d94 (= @cofhe/sdk@0.5.1 monorepo) replaces standalone cofhe-mock-contracts foundry.toml remappings: - @fhenixprotocol/cofhe-mock-contracts/=lib/cofhe-mock-contracts/contracts/ → @cofhe/mock-contracts/=lib/cofhesdk/packages/mock-contracts/ - Added @cofhe/foundry-plugin/=lib/cofhesdk/packages/foundry-plugin/ (CofheTest helper moved here in v0.5) reineira.json: - Removed stale cofhejs / hardhat refs (main migrated to Foundry in #5) - Added @cofhe/sdk: ^0.5.1, foundry: >=0.2.0 Verified: forge build OK, forge test 15/15 pass.
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Test Results:
Ready for deployment testing on Arbitrum Sepolia testnet.