M Monster Docs

Install Monster

Use the release installer for the fastest setup, or install from source when you want to work on the compiler itself.

Release Installer

Linux and macOS global install:

curl -fsSL https://raw.githubusercontent.com/BitIntx/monster-lang/main/install/install-release.sh | sudo env PREFIX=/usr/local bash
mst --help

Windows PowerShell:

irm https://raw.githubusercontent.com/BitIntx/monster-lang/main/install/install-release.ps1 | iex
mst --version

User-local install without sudo:

curl -fsSL https://raw.githubusercontent.com/BitIntx/monster-lang/main/install/install-release.sh | bash
mst --help

Pin a Specific Release

curl -fsSL https://raw.githubusercontent.com/BitIntx/monster-lang/main/install/install-release.sh | env MST_VERSION=v0.1.3 bash
$env:MST_VERSION = "v0.1.3"
irm https://raw.githubusercontent.com/BitIntx/monster-lang/main/install/install-release.ps1 | iex

Build From Source

git clone https://github.com/BitIntx/monster-lang.git
cd monster-lang
./install/install.sh
mst --help

The compiler itself is written in Rust. Building from source is the right choice if you want to hack on Monster, test changes locally, or package custom builds.

Toolchain Requirements

For mst build and mst run, you still need clang-18 or clang, and opt-18 or opt on your PATH.

The release installer currently supports Linux x86_64, Linux ARM64, macOS x86_64, macOS arm64, and Windows x86_64. It also installs the bundled standard library to the matching share/mst/std directory.

Update

Use the compiler itself to reinstall the latest published release into its current install directory:

mst -upgrade

The release installer also still works as a manual update path:

curl -fsSL https://raw.githubusercontent.com/BitIntx/monster-lang/main/install/install-release.sh | sudo env PREFIX=/usr/local bash