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This is the main source code repository for rw — a statically typed, async-first compiled language with a Python-flavored surface syntax. It contains the compiler, the C runtime, and the language specs.

Why rw?

• Async first: spawn / await and Future[T] are first-class. The fiber runtime handles 100k+ tasks on a single thread.
• Familiar syntax: Indentation, def, elif, and / or / not, true / false.
• Static types: All parameters, returns, and locals are annotated.
• LLVM backend: Native binaries on macOS arm64 and Linux x86_64.

Quick Start

uv sync --extra dev
make -C runtime
uv run rwc run examples/hello.rw

For installation prerequisites and detailed setup, see INSTALL.md.

Getting Help

See Issues and the language specs under docs/specs/.

Contributing

Contribution guidelines are tracked in #71. For now, pick any open issue and send a pull request.