Alloy

Core libraries at the root of the Rust Ethereum ecosystem.

Overview

This repository contains the following crates:

alloy-primitives - Primitive integer and byte types
alloy-rlp - Implementation of Ethereum RLP serialization
alloy-rlp-derive - Derive macros for alloy-rlp
alloy-dyn-abi - Run-time ABI and EIP-712 implementations
alloy-sol-types - Compile-time ABI and EIP-712 implementations
alloy-sol-macro - The sol! procedural macro
syn-solidity - syn-powered Solidity parser, used by alloy-sol-macro

Supported Rust Versions

Alloy will keep a rolling MSRV (minimum supported rust version) policy of at least 6 months. When increasing the MSRV, the new Rust version must have been released at least six months ago. The current MSRV is 1.65.0.

Note that the MSRV is not increased automatically, and only as part of a minor release.

Contributing

Thanks for your help improving the project! We are so happy to have you! We have a contributing guide to help you get involved in the Alloy project.

Pull requests will not be merged unless CI passes, so please ensure that your contribution follows the linting rules and passes clippy.

WASM support

We provide full support for all the wasm*-* targets. If a crate does not build on a WASM target, please open an issue.

When building for the wasm32-unknown-unknown target and the "getrandom" feature is enabled, compilation for the getrandom crate will fail. This is expected: see their documentation for more details.

To fix this, either disable the "getrandom" feature on alloy-core or add getrandom to your dependencies with the "js" feature enabled:

getrandom = { version = "0.2", features = ["js"] }

There is currently no plan to provide an official JS/TS-accessible library interface, as we believe viem or ethers.js serve that need very well.

Note on `no_std`

We intend these crates to support no_std with alloc, and have written them with that in mind. However, a key dependency, ruint, does not yet support no_std. We strive to maintain no_std + alloc compatibility, and intend to contribute upstream PRs to achieve it in ruint.

Credits

None of these crates would have been possible without the great work done in:

chrisco512/core