CLI Commands

Build & Run

Command	Description
wyn run app.wyn	Compile and run (TCC, fastest iteration)
wyn build app.wyn	Compile to binary (clang/gcc)
wyn build --release app.wyn	Optimized build (clang -O2)
wyn build --wasm app.wyn	Compile to WebAssembly

Cross-Compilation

wyn cross <target> app.wyn

Targets: linux-x64, linux-arm64, windows-x64, macos-x64, macos-arm64, ios, android, android-x64, wasm32, riscv64

Mobile

Command	Description
wyn package ios app.wyn	Create iOS .app bundle
wyn package android app.wyn	Create Android .apk

Options: --name AppName, --id com.example.app

Development

Command	Description
wyn test	Run tests in tests/ directory (cross-platform, no shell)
wyn test tests/expect	Run tests in a specific directory
wyn fmt app.wyn	Format source code (4-space indent, no semicolons)
wyn fmt src/ --check	Check formatting without modifying (for CI)
wyn doc app.wyn	Generate documentation
wyn lsp	Start language server
wyn debug app.wyn	Debug with DWARF + lldb
wyn hot app.wyn	Hot reload (mobile dev)

Packages

Command	Description
wyn pkg install <name>	Install a package
wyn pkg list	List installed packages

Syntax Notes

• No semicolons needed
• Bare return (no value) works in void functions
• fn main() -> int { ... } or just fn main() { ... }
• String interpolation: "hello ${name}"
• Pipe operator: x |> transform |> format

See Also

• Installation — install Wyn
• Quick Start — common workflows
• Deploying — deploy Wyn applications