JupyterLab Material Night Eighties theme

Theme for jupyterlab based on jupyterlab/extension-template, inspired by oriolmirosa/jupyterlab_materialdarker, arbennett/jupyterlab-themes, VSCode Material Theme Kit, and base16

• JupyterLab Material Night Eighties theme
  • Requirements
  • Installation
  • Screenshots
  • Contributing
    • Development install
    • Updating dependencies
    • Development uninstall
    • Testing the extension
    • Packaging the extension

See CONTRIBUTING.md for the test runbook, pinned-dependency rationale, and guidance on editing the color palette.

Requirements

• JupyterLab >= 4.0

Because Notebook 7 is built on JupyterLab 4 components, this theme also works in Notebook 7 with no additional configuration.

For JupyterLab 3, use version 0.3.3 or earlier.

Installation

To install the extension, execute:

pip install jupyterlab-material-night-eighties

or, with uv:

uv pip install jupyterlab-material-night-eighties

Screenshots

Contributing

Development install

Development requires Node.js 24 and uv. Node.js 24 matches CI.

This project uses uv to manage the Python environment. hatchling remains the build backend — hatch-jupyter-builder is a hatchling build hook, and it is what compiles the TypeScript and stages the prebuilt labextension into share/jupyter.

The jlpm command is JupyterLab's pinned version of yarn that is installed with JupyterLab.

git clone https://github.com/ninerealmlabs/jupyterlab-theme-material-night-eighties.git
cd jupyterlab-theme-material-night-eighties

# Create the dev environment (JupyterLab, jupyter-builder, hatch)
uv sync

# Install the extension in editable mode
uv pip install -e .

# Link your development version of the extension with JupyterLab
uv run jupyter-builder develop . --overwrite

# Rebuild extension TypeScript source after making changes
uv run jlpm build

You can watch the source directory and run JupyterLab at the same time in different terminals to watch for changes in the extension's source and automatically rebuild the extension.

• Terminal A:

  # Watch the source directory in one terminal, automatically rebuilding when needed
  uv run jlpm run watch
  

• Terminal B:

  uv run jupyter lab
  

With the watch command running, every saved change will immediately be built locally and available in your running JupyterLab. Refresh JupyterLab to load the change in your browser (you may need to wait several seconds for the extension to be rebuilt).

By default, the jlpm build command generates the source maps for this extension to make it easier to debug using the browser dev tools. To also generate source maps for the JupyterLab core extensions, you can run the following command:

jupyter lab build --minimize=False

Updating dependencies

Some dependencies are deliberately pinned below their latest release, and this repo intentionally diverges from the upstream JupyterLab template in a few places. See CONTRIBUTING.md before bumping anything.

Development uninstall

uv pip uninstall jupyterlab-material-night-eighties

In development mode, you will also need to remove the symlink created by jupyter-builder develop command. Run uv run jupyter labextension list to find the active labextensions directory. Within it, remove the symlink at @ninerealmlabs/jupyterlab_material_night_eighties.

Testing the extension

Use the test runbook for local validation. It covers the core CI gates, integration tests, packaging checks, and the manual visual review used before a release.

Packaging the extension

See RELEASE