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PactLang

v0.0.3 · by Salama Ashoush · added 3 November 2026

Pact Programming Language extension for Zed

LanguagesLanguage servers
Install in Forge SuperView the source

How to install

With Forge Super installed, the button above opens the app on this extension, where you press Install. Nothing is installed until you do.

You can also open the Extensions panel in the app and search for PactLang. The extension's id is pact.

Don't have Forge Super yet? Download it here.

README

From the extension's repository, written by its authors and not by Mentenaz. See the source.

Pact for Zed

A zed extension that brings full Pact language support to the Zed editor.

✨ Features

  • 🎨 Syntax highlighting
  • 📑 Smart outline view for quick navigation
  • 📦 Code folding
  • ⚡️ Built-in tasks for running Pact files and tests
  • 🚀 Intelligent code assistance:
    • Auto-completion
    • Real-time error checking
    • Hover documentation
    • Go to definition
    • And more!

🚀 Getting Started

Option 1: Using Pactup (Recommended)

Pactup is the easiest way to manage your Pact installation:

follow the instructions to install Pactup: https://github.com/kadena-community/pactup then run the following commands:

# Install the latest nightly build
pactup install nightly --force

# Set it as your active version
pactup use nightly

Quick one-liner (no installation required):

npx pactup install nightly --force && npx pactup which nightly
# /home/salama/.local/share/pactup/pact-versions/nightly

Copy the path to the pact installation and append /bin/pact then paste it in your Zed settings

{
  "lsp": {
    "pact": {
      "path": "/home/salama/.local/share/pactup/pact-versions/nightly/bin/pact",
      "arguments": ["--lsp"]
    }
  }
}

Option 2: Manual Configuration

You can specify a custom Pact binary in your Zed settings:

  1. Open Zed Settings
  2. Add the following configuration:
{
  "lsp": {
    "pact": {
      "path": "/path/to/your/pact",
      "arguments": ["--lsp"]
    }
  }
}

🔍 How It Works

The extension will look for a Pact binary in this order:

  1. System PATH
  2. Custom path specified in Zed settings
  3. Automatically downloaded nightly build (cached for future use)

💡 Tip: Using Pactup is recommended as it helps you manage and update your Pact installation easily.

🔄 Keeping Pact Updated

To update to the latest nightly build:

pactup install nightly --force
pactup use nightly

You can also specify a Pact version for your project by creating a .pact-version file in your project root:

nightly

🛠️ Development

Want to contribute? Here's how to set up the extension locally:

  1. Clone the repository:
git clone https://github.com/kadena-community/pact-zed
  1. Open Zed
  2. Go to Settings → Extensions
  3. Click Install Dev Extension and select the pact-zed folder

🤝 Contributing

Contributions are welcome! Feel free to:

  • Open issues for bugs or feature requests
  • Submit pull requests
  • Share feedback