Previously, Config::root_path() would always return the LSP rootUri of the first workspace folder. This can cause issues when the user has multiple workspaces open in their editor, especially if the first one in the list isn't a Rust project. This was noted as an issue in rust-lang/rust-analyzer#21483, and added comments suggesting that we should deprecate root_path(). This change splits root_path() into a `workspace_root_for()` function that handles the multiple workspace case correctly, and a `default_root_path()` fallback. This is particularly useful when the user has configured project-relative paths to e.g. their discover command or rustfmt, but it's the correct behaviour in general. AI disclosure: First draft was written with Claude Opus.
This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
Why Rust?
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Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrated with other languages.
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Reliability: Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.
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Productivity: Comprehensive documentation, a compiler committed to providing great diagnostics, and advanced tooling including package manager and build tool (Cargo), auto-formatter (rustfmt), linter (Clippy) and editor support (rust-analyzer).
Quick Start
Read "Installation" from The Book.
Installing from Source
If you really want to install from source (though this is not recommended), see INSTALL.md.
Getting Help
See https://www.rust-lang.org/community for a list of chat platforms and forums.
Contributing
See CONTRIBUTING.md.
For a detailed explanation of the compiler's architecture and how to begin contributing, see the rustc-dev-guide.
License
Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.
See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.
Trademark
The Rust Foundation owns and protects the Rust and Cargo trademarks and logos (the "Rust Trademarks").
If you want to use these names or brands, please read the Rust language trademark policy.
Third-party logos may be subject to third-party copyrights and trademarks. See Licenses for details.