@datalayer-jupyter/jupyterlab-git

jupyterlab-git

A JupyterLab extension for version control using Git

To see the extension in action, open the example notebook included in the Binder demo.

Prerequisites

• JupyterLab (version 1.x or 2.x)
• Git (version >=2.x)

Usage

• Open the Git extension from the Git tab on the left panel

Install

To install perform the following steps, with pip:

pip install --upgrade jupyterlab jupyterlab-git
jupyter lab build

or with conda:

conda install -c conda-forge jupyterlab jupyterlab-git
jupyter lab build

Settings

UI Settings

Once installed, extension behavior can be modified via the following settings which can be set in JupyterLab's advanced settings editor:

• blockWhileCommandExecutes: suspend JupyterLab user interaction until Git commands (e.g., commit, pull, reset, revert) finish executing. Setting this to true helps mitigate potential race conditions leading to data loss, conflicts, and a broken Git history. Unless running a slow network, UI suspension should not interfere with standard workflows. Setting this to false allows for actions to trigger multiple concurrent Git actions.
• cancelPullMergeConflict: cancel pulling changes from a remote repository if there exists a merge conflict. If set to true, when fetching and integrating changes from a remote repository, a conflicting merge is canceled and the working tree left untouched.
• disableBranchWithChanges: disable all branch operations, such as creating a new branch or switching to a different branch, when there are changed/staged files. When set to true, this setting guards against overwriting and/or losing uncommitted changes.
• displayStatus: display Git extension status updates in the JupyterLab status bar. If true, the extension displays status updates in the JupyterLab status bar, such as when pulling and pushing changes, switching branches, and polling for changes. Depending on the level of extension activity, some users may find the status updates distracting. In which case, setting this to false should reduce visual noise.
• doubleClickDiff: double click a file in the Git extension panel to open a diff of the file instead of opening the file for editing.
• historyCount: number of commits shown in the history log, beginning with the most recent. Displaying a larger number of commits can lead to performance degradation, so use caution when modifying this setting.
• refreshInterval: number of milliseconds between polling the file system for changes. In order to ensure that the UI correctly displays the current repository status, the extension must poll the file system for changes. Longer polling times increase the likelihood that the UI does not reflect the current status; however, longer polling times also incur less performance overhead.
• simpleStaging: enable a simplified concept of staging. When this setting is true, all files with changes are automatically staged. When we develop in JupyterLab, we often only care about what files have changed (in the broadest sense) and don't need to distinguish between "tracked" and "untracked" files. Accordingly, this setting allows us to simplify the visual presentation of changes, which is especially useful for those less acquainted with Git.

Server Settings

• Post git init actions: It is possible to provide a list of commands to be executed in a folder after it is initialized as Git repository.

In ~/.jupyter/jupyter_notebook_config.py:

c.JupyterLabGit.actions = {"post_init": ["touch dummy_init.dat"]}

Or equivalently in jupyter_notebook_config.json:

{
  "JupyterLabGit": {
    "actions": {
      "post_init": [
        "touch dummy_init.dat"
      ]
    }
  }
}

Troubleshooting

Before consulting the following list, be sure the server extension and the frontend extension have the same version by executing the following commands:

jupyter serverextension list
jupyter labextension list

• Issue: the Git panel does not recognize that you are in a Git repository.

  Possible fixes:

  • Be sure to be in a Git repository in the filebrowser tab

  • Check the server log. If you see a warning with a 404 code similar to: [W 00:27:41.800 LabApp] 404 GET /git/settings?version=0.20.0

    Explicitly enable the server extension by running:

    jupyter serverextension enable --py jupyterlab_git
    

  • If you are using JupyterHub or some other technologies requiring an initialization script which includes the jupyterlab-git extension, be sure to install both the frontend and the server extension before launching JupyterLab.

• Issue: the Git panel is not visible.

  Possible fixes:

  • Check that the JupyterLab extension is installed:

    jupyter labextension list
    

    If you don't see @jupyterlab/git v... enabled OK in the list, explicitly install the jupyter labextension by running:

    jupyter labextension install @jupyterlab/git
    

Development

Contributing

If you would like to contribute to the project, please read our contributor documentation.

JupyterLab follows the official Jupyter Code of Conduct.

Install

Requires NodeJS

# Install new-ish JupyterLab
pip install -U jupyterlab

# Clone the repo to your local environment
git clone https://github.com/jupyterlab/jupyterlab-git.git
cd jupyterlab-git

# Install the server extension in development mode and enable it
pip install -e .[test]
pre-commit install
jupyter serverextension enable --py jupyterlab_git --sys-prefix

# Build and install your development version of the extension
jlpm
jupyter labextension install .

To rebuild the package after a change and the JupyterLab app:

jlpm run build
jupyter lab build

To continuously monitor the project for changes and automatically trigger a rebuild, start Jupyter in watch mode:

jupyter lab --watch

And in a separate session, begin watching the source directory for changes:

jlpm run watch

Now every change will be built locally and bundled into JupyterLab. Be sure to refresh your browser page after saving file changes to reload the extension (note: you'll need to wait for webpack to finish, which can take 10s+ at times).

To execute the tests

pytest jupyterlab_git
jlpm run test

Contributors ✨

The Jupyter Git extension is part of Project Jupyter and is developed by an open community of contributors. To see who has been active recently, please look at the "Contributors" tab. Below we list the people and entities who contributed in different ways to the project (emoji key):

Brian E. Granger 📆 🎨 🤔 🔍	Saul Shanabrook 💻 📆 👀 🚇	Jaipreet Singh 📆 👀 💻 🎨	Frédéric Collonval 🚧	jupytercalpoly 🤝	Amazon Web Services 🤝	The D. E. Shaw Group 🤝
Ji Zhang 💻 👀	Hana Zarea 💻 👀	Noah Stapp 💻 👀	Ashutosh Bondre 💻 👀	Neelam Gehlot 💻 👀	Konstantin Taletskiy 💻 👀	Max Klein 💻 👀 📆 🎨 🚇
Athan 💻 👀 📆 🎨	Ian Hunt-Isaak 💻 👀

This project follows the all-contributors specification. Contributions of any kind are welcomed!

To add yourself, or someone else, to this list you can either use the bot (@all-contributors please add <username> for <contributions>) or the CLI (jlpm all-contributors add <username> <contributions>).

If you manually edit the .all-contributorsrc config file, run yarn run contributors:generate.