Installation

Note that if you want to run Sway smart contracts (e.g. for testing), a Fuel Core full node is required. Otherwise, the Sway toolchain is sufficient to compile Sway smart contracts.

Installing from Pre-compiled Binaries

Pre-compiled release binaries for Linux and macOS are available for the Sway toolchain. Native Windows is currently unsupported (tracking issue for Windows support). Windows Subsystem for Linux should work but is not officially supported.

fuelup is the equivalent of Rust's rustup for the Sway toolchain. It enables easily downloading binary releases of the Sway toolchain.

Start by installing fuelup with:

curl --proto '=https' --tlsv1.2 -sSf \
    https://fuellabs.github.io/fuelup/fuelup-init.sh | sh -s install

You may need to add ~/.fuelup/bin to your PATH. For Bash:

export PATH="${HOME}/.fuelup/bin/:${PATH}"

Then run

fuelup install

to install the latest Sway toolchain.

Note: A curl: (22) The requested URL returned error: 404 error when running any of the steps above is most likely an indication that a new release was published but binaries were not yet uploaded by CI. See: https://github.com/FuelLabs/fuelup/issues/44. Simply re-try the commands after binaries are uploaded.

Installing from Source

Dependencies

A prerequisite for installing and using Sway is the Rust toolchain. Platform-specific instructions for installing rustup can be found here. Then, install the Rust toolchain with:

# Install the latest stable Rust toolchain.
rustup install stable

Installing fuel-core may require installing additional system dependencies. See here for instructions.

The Sway toolchain is built and tested against the stable Rust toolchain version (https://github.com/rust-lang/rust/releases/latest). There is no guarantee it will work with the nightly Rust toolchain, or with earlier stable versions, so ensure you are using stable with:

# Update installed Rust toolchain; can be used independently.
rustup update
# Set the stable Rust toolchain as default; can be used independently.
rustup default stable

Installing from Cargo

The Sway toolchain and Fuel Core full node can be installed from source with Cargo with:

cargo install forc fuel-core

Updating forc from Cargo

You can update the toolchain from source with Cargo with:

cargo install forc fuel-core

Installing forc Plugins from Cargo

The Fuel ecosystem has a few plugins which can be easily installed via Cargo.

Note: forc detects anything in your $PATH prefixed with forc- as a plugin. Use forc plugins to see what you currently have installed.

# Sway Formatter
cargo install forc-fmt

# Block Explorer
cargo install forc-explore

# Sway Language Server
cargo install forc-lsp

Building from Source

Rather than installing from cargo, the Sway toolchain can be built from a local source checkout by following instructions at https://github.com/FuelLabs/sway. The Fuel Core full node implementation can be built from source by following instructions at https://github.com/FuelLabs/fuel-core.

Enable tab completion for Bash, Fish, Zsh, or PowerShell

forc supports generating completion scripts for Bash, Fish, Zsh, and PowerShell. See forc completions --help for full details, but the gist is as simple as using one of the following:

# Bash
forc completions --shell=bash > ~/.local/share/bash-completion/completions/forc

# Bash (macOS/Homebrew)
forc completions --shell=bash > $(brew --prefix)/etc/bash_completion.d/forc.bash-completion

# Fish
mkdir -p ~/.config/fish/completions
forc completions --shell=fish > ~/.config/fish/completions/forc.fish

# Zsh
forc completions --shell=zsh > ~/.zfunc/_forc

# PowerShell v5.0+
forc completions --shell=powershell >> $PROFILE.CurrentUserCurrentHost
# or
forc completions --shell=powershell | Out-String | Invoke-Expression

Once the completions have been generated and properly installed, close and reopen your terminal for the new completions to take effect.