Add devcontainer support, backed by pixi

.devcontainer/Dockerfile

@@ -0,0 +1,13 @@
+FROM mcr.microsoft.com/devcontainers/base:jammy
+
+ARG PIXI_VERSION=v0.42.1
+
+RUN curl -L -o /usr/local/bin/pixi -fsSL --compressed "https://github.com/prefix-dev/pixi/releases/download/${PIXI_VERSION}/pixi-$(uname -m)-unknown-linux-musl" \
+    && chmod +x /usr/local/bin/pixi \
+    && pixi info
+
+# set some user and workdir settings to work nicely with vscode
+USER vscode
+WORKDIR /home/vscode
+
+RUN echo 'eval "$(pixi completion -s bash)"' >> /home/vscode/.bashrc

.devcontainer/devcontainer.json

@@ -0,0 +1,21 @@
+{
+  "name": "Jupyter Notebook",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": ".."
+  },
+  "forwardPorts": [8888],
+  "customizations": {
+    "vscode": {
+      "settings": {},
+      "extensions": ["ms-python.python", "charliermarsh.ruff", "GitHub.copilot"]
+    }
+  },
+  "features": {
+    "ghcr.io/devcontainers/features/docker-in-docker:2": {}
+  },
+  "mounts": [
+    "source=${localWorkspaceFolderBasename}-pixi,target=${containerWorkspaceFolder}/.pixi,type=volume"
+  ],
+  "postCreateCommand": "sudo chown vscode .pixi && pixi install && pixi run develop && pixi run pre-commit install -f"
+}

.eslintignore

@@ -18,3 +18,6 @@ app/index.template.js
 # ms IDE stuff
 .history/
 .vscode/
+
+# Pixi environments
+.pixi

.gitattributes

@@ -0,0 +1,2 @@
+# SCM syntax highlighting & preventing 3-way merges
+pixi.lock merge=binary linguist-language=YAML linguist-generated=true

.gitignore

@@ -138,3 +138,7 @@ ui-tests/.pnp.*
 
 # generated html
 notebook/templates/*.html
+
+# pixi environments
+.pixi
+*.egg-info

.pre-commit-config.yaml

@@ -33,6 +33,7 @@ repos:
         exclude: |
           (?x)^(
               yarn.lock|
+              pixi.lock|
               binder/example.ipynb|
               docs/source/examples/images/FrontendKernel.graffle/data.plist|
           )$

.prettierignore

@@ -9,3 +9,4 @@ node_modules
 build
 CHANGELOG.md
 app/index.template.js
+.pixi

CONTRIBUTING.md

@@ -22,7 +22,7 @@ mamba create -n notebook -c conda-forge python nodejs -y
 mamba activate notebook
 
 # Install package in development mode
-pip install -e ".[dev,test]"
+pip install -e ".[dev,docs,test]"
 
 # Install dependencies and build packages
 jlpm
@@ -240,6 +240,10 @@ Now open a web browser and navigate to `http://localhost:8000` to access the doc
 
 Alternatively you can also contribute to Jupyter Notebook without setting up a local environment, directly from a web browser:
 
+- [GitHub CodeSpaces](https://github.com/codespaces) is directly integrated into GitHub. This repository uses the [pixi](https://pixi.sh/) package manager to set up the development environment. To contribute after the Codespace is started:
+  - Run `pixi shell` in a terminal to activate the development environment
+  - Use the commands above for building the extension and running the tests, for example: `jlpm build`
+  - To start the application: `pixi run start`. A popup should appear with a button to open the Jupyter Notebook in a new browser tab. If the popup does not appear, you can navigate to the "Forwarded ports" panel to find the URL to the application.
 - [Gitpod](https://gitpod.io/#https://github.com/jupyter/notebook) integration is enabled. The Gitpod config automatically builds the Jupyter Notebook application and the documentation.
 - GitHub’s [built-in editor](https://docs.github.com/en/repositories/working-with-files/managing-files/editing-files) is suitable for contributing small fixes
-- A more advanced [github.dev](https://docs.github.com/en/codespaces/the-githubdev-web-based-editor) editor can be accessed by pressing the dot (.) key while in the Jupyter Notebook GitHub repository,
+- A more advanced [github.dev](https://docs.github.com/en/codespaces/the-githubdev-web-based-editor) editor can be accessed by pressing the dot (.) key while in the Jupyter Notebook GitHub repository

pyproject.toml

@@ -289,3 +289,25 @@ exclude = ["tests", "ui-tests", "docs", "node_modules", "setup.py"]
 
 [tool.repo-review]
 ignore = ["GH102", "PC180", "PC111"]
+
+[tool.pixi.project]
+channels = ["conda-forge"]
+platforms = ["linux-64"]
+
+[tool.pixi.pypi-dependencies]
+notebook = { path = ".", editable = true, extras = ["dev", "docs"] }
+
+[tool.pixi.environments]
+default = { solve-group = "default" }
+dev = { features = ["dev"], solve-group = "default" }
+docs = { features = ["docs"], solve-group = "default" }
+test = { features = ["test"], solve-group = "default" }
+
+[tool.pixi.tasks]
+develop = "jlpm develop"
+start = "jupyter notebook --no-browser --ServerApp.token='' --ServerApp.allow_remote_access=True"
+
+[tool.pixi.dependencies]
+pip = ">=25.0.1,<26"
+nodejs = "22.*"
+python = ">=3.12.0,<3.14"