InvariantRing

Macaulay2 package for computing invariants of group actions on polynomial rings. For an overview of the package, please consult arXiv:2010.15331.

More information about Macaulay2 available at macaulay2.com.

Macaulay2 (M2)-codespace

Codespace setup for Macaulay2 (M2)

🚀 How to Create Your Own M2-Codespace Repository

There are two easy ways to set up your own Macaulay2-enabled Codespace:

✅ Option 1: Fork This Repository

1. Visit galettof/InvariantRing or fragandi/M2-codespace.

2. Click "Fork" (top-right) to copy it to your GitHub account.

3. Open your new forked repository and click "Code" → "Create codespace on main".

You're ready to start using Macaulay2 in your own Codespace!

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🛠️ Option 2: Set Up a Fresh Repository Manually

1. Create a new GitHub repository in your account.
2. Copy the entire .devcontainer/ folder from galettof/InvariantRing or fragandi/M2-codespace into your repo.
3. (Recommended) Also copy the following for a smoother experience:
   • The M2codes/ folder (Macaulay2 example files)
   • The image_files folder and README.md file (for guidance and troubleshooting)
4. Push your changes and create a Codespace from the repository.

This option gives you more flexibility to customize your setup while keeping the essential Macaulay2 environment.

Checking if Codespace Was Set Up Properly

1. Reload the VS Code window to apply all settings:

   • Press Cmd+Shift+P (Mac) or Ctrl+Shift+P (Windows/Linux)
   • Search for and select: Reload Window

   Or run this in the Command Palette:

2. Fix Macaulay2 executable path errors: If you see an error like “Cannot find Macaulay2 executable”, it's likely caused by conflicting user settings.

• To confirm this executable path error
• Go to the extension settings as shown in the image below:

• If your path is different than what it shows in the image above try the step below:

👉 To fix this, turn off Settings Sync in VS Code:

• Open the Command Palette (Cmd/Ctrl + Shift + P)

• Search for:

  > Settings Sync: Turn Off
  

• Confirm when prompted.

• Reload the window or delete the existing codespace and create a new one if necessary.

3. Check the Codespace creation log to confirm Macaulay2 was installed correctly:

• Open the Command Palette (Cmd/Ctrl + Shift + P)
• Search for and select: Codespaces: View Creation Log
• Look for confirmation messages like:

  ✅ Macaulay2 installed successfully!
  

✅ Following all these steps ensures that only the settings configured in this repository are applied and Macaulay2 is ready to use inside your Codespace.

Macaulay2 documentation website:

• Visit: The Macaulay2 Language