Apps

Five binary deliverables ship from this workspace. Each is a thin entry point that composes shared crates from crates/.

App	Crate	What it is
ruff	crates/ruff	The Ruff CLI: check, format, analyze graph, clean, config, version, server, rule, linter.
ty	crates/ty	The ty CLI: check, server, version, plus diagnostic and config helpers.
Ruff LSP server	crates/ruff_server	The language server invoked by ruff server. Powers VS Code, Neovim, JetBrains, Zed integrations.
ty LSP server	crates/ty_server	The language server invoked by ty server.
Web playgrounds	crates/ruff_wasm, crates/ty_wasm	WebAssembly bindings consumed by playground/.

How they relate

graph LR
    User[user / editor]
    User --> RuffCli[ruff CLI]
    User --> TyCli[ty CLI]
    User --> RuffServerCli[ruff server]
    User --> TyServerCli[ty server]
    User --> Browser[browser playground]

    RuffCli --> RuffLinter[ruff_linter]
    RuffCli --> RuffFormatter[ruff_python_formatter]
    RuffCli --> RuffWorkspace[ruff_workspace]

    RuffServerCli --> RuffServer[ruff_server crate]
    RuffServer --> RuffLinter
    RuffServer --> RuffFormatter

    TyCli --> TySemantic[ty_python_semantic]
    TyCli --> TyProject[ty_project]

    TyServerCli --> TyServer[ty_server crate]
    TyServer --> TySemantic
    TyServer --> TyIde[ty_ide]

    Browser --> RuffWasm[ruff_wasm]
    Browser --> TyWasm[ty_wasm]
    RuffWasm --> RuffLinter
    RuffWasm --> RuffFormatter
    TyWasm --> TySemantic

Pages

• ruff CLI — subcommands, args, output formats.
• ty CLI — type-checker entry point and project resolution.
• LSP servers — ruff server and ty server, capabilities and editor integrations.
• WASM playgrounds — ruff_wasm and ty_wasm, the in-browser entry points.