myst-libre 0.2.12

A Python library for managing source code repositories, interacting with Docker registries, handling MyST markdown operations, and spawning JupyterHub instances locally.

MyST Libre

Following the REES, myst-libre streamlines building ✨MyST articles✨ in containers.

• A repository containing MyST sources
• A Docker image (built by binderhub) in a public (or private) registry, including:
  • Dependencies to execute notebooks/markdown files in the MyST repository
  • JupyterHub (typically part of images built by binderhub)
• Input data required by the executable content (optional)

Given these resources, myst-libre starts a Docker container, mounts the MyST repository and data (if available), and builds a MyST publication.

[!NOTE] This project was started to support publishing MyST articles as living preprints on NeuroLibre.

Installation

External dependencies

[!IMPORTANT] Ensure the following prerequisites are installed:

• Node.js (For MyST) installation guide
• Docker installation guide

Install myst-libre

pip install myst-libre

Set up environment variables:

If you are using a private image registry, create a .env file in the project root and add the following:

DOCKER_PRIVATE_REGISTRY_USERNAME=your_username
DOCKER_PRIVATE_REGISTRY_PASSWORD=your_password

Quick Start

Import libraries and define REES resources

Minimal example to create a rees object:

from myst_libre.tools import JupyterHubLocalSpawner, MystMD
from myst_libre.rees import REES
from myst_libre.builders import MystBuilder

rees = REES(dict(
                  registry_url="https://your-registry.io",
                  gh_user_repo_name = "owner/repository"
                  ))

Other optional parameters that can be passed to the REES constructor:

• gh_repo_commit_hash: Full SHA commit hash of the gh_user_repo_name repository (optional, default: latest commit)
• binder_image_tag: Full SHA commit hash at which a binder tag is available for the "found image name" (optional, default: latest)
• binder_image_name_override: Override the "found image name" whose container will be used to build the MyST article (optional, default: None)
• dotenv: Path to a directory containing the .env file for authentication credentials to pull images from registry_url (optional, default: None)
• bh_image_prefix: Binderhub names the images with a prefix, e.g., <prefix>agahkarakuzu-2dmriscope-7a73fb, typically set as binder-. This will be used in the regex pattern to find the "binderhub built image name" in the registry_url. See reference docs for more details.
• bh_project_name: See this issue (optional, default: [registry_url without http:// or https://])

Note that in this context what is meant by "prefix" is not the same as in the reference docs. (optional, default: binder-)

Image Selection Order

1. If the myst.yml file in the gh_user_repo_name repository contains project/thebe/binder/repo, this image is prioritized.
2. If project/thebe/binder/repo is not specified, the gh_user_repo_name is used as the image name.

Note that if (2) is the case, your build command probably should not be myst build, but you can still use other builders, e.g., jupyter-book build.

If you specify binder_image_name_override, it will be used as the repository name to locate the image.

This allows you to build the MyST article using a runtime from a different repository than the one specified in gh_user_repo_name, as defined in myst.yml or overridden by binder_image_name_override.

The binder_image_tag set to latest refers to the most recent successful build of an image that meets the specified conditions. The repository content might be more recent than the binder_image_tag (e.g., gh_repo_commit_hash), but the same binder image can be reused.

Fetch resources and spawn JupyterHub in the respective container

hub = JupyterHubLocalSpawner(rees_resources,
                             host_build_source_parent_dir = '/tmp/myst_repos',
                             container_build_source_mount_dir = '/home/jovyan', #default
                             host_data_parent_dir = "/tmp/myst_data", #optional
                             container_data_mount_dir = '/home/jovyan/data', #optional
                             )
hub.spawn_jupyter_hub()

• MyST repository will be cloned at:

tmp/
└── myst_repos/
    └── owner/
        └── repository/
            └── full_commit_SHA_A/
                ├── myst.yml
                ├── _toc.yml
                ├── binder/
                │   ├── requirements.txt (or other REES dependencies)
                │   └── data_requirement.json (optional)
                ├── content/
                │   ├── my_notebook.ipynb
                │   └── my_myst_markdown.md
                ├── paper.md
                └── paper.bib

Repository will be mounted to the container as /tmp/myst_repos/owner/repository/full_commit_SHA_A:/home/jovyan.

• If a repo2data manifest is found in the repository, the data will be downloaded to and cached at:

tmp/
└── myst_data/
    └── my-dataset

otherwise, it can be manually defined for an existing data under /tmp/myst_data as follows:

rees_resources.dataset_name = "my-dataset"

In either case, data will be mounted as /tmp/myst_data/my-dataset:/home/jovyan/data/my-dataset. If no data is provided, this step will be skipped.

Build your MyST article

MystBuilder(hub).build()

Check out the built document

In your terminal:

npx serve /tmp/myst_repos/owner/repository/full_commit_SHA_A/_build/html

Visit ✨http://localhost:3000✨.

Table of Contents

• Myst Libre
  • Table of Contents
  • Installation
  • Usage
    • Authentication
    • Docker Registry Client
    • Build Source Manager
    • JupyterHub Local Spawner
    • MyST Markdown Client
  • Module and Class Descriptions
  • Contributing
  • License

Usage

Authentication

The Authenticator class handles loading authentication credentials from environment variables.

from myst_libre.tools.authenticator import Authenticator

auth = Authenticator()
print(auth._auth)

Docker Registry Client

The DockerRegistryClient class provides methods to interact with a Docker registry.

from myst_libre.tools.docker_registry_client import DockerRegistryClient

client = DockerRegistryClient(registry_url='https://my-registry.example.com', gh_user_repo_name='user/repo')
token = client.get_token()
print(token)

Build Source Manager

The BuildSourceManager class manages source code repositories.

from myst_libre.tools.build_source_manager import BuildSourceManager

manager = BuildSourceManager(gh_user_repo_name='user/repo', gh_repo_commit_hash='commit_hash')
manager.git_clone_repo('/path/to/clone')
project_name = manager.get_project_name()
print(project_name)

Module and Class Descriptions

AbstractClass

Description: Provides basic logging functionality and colored printing capabilities.

Authenticator

Description: Handles authentication by loading credentials from environment variables.
Inherited from: AbstractClass
Inputs: Environment variables DOCKER_PRIVATE_REGISTRY_USERNAME and DOCKER_PRIVATE_REGISTRY_PASSWORD

RestClient

Description: Provides a client for making REST API calls.
Inherited from: Authenticator

DockerRegistryClient

Description: Manages interactions with a Docker registry.
Inherited from: Authenticator
Inputs:

• registry_url: URL of the Docker registry
• gh_user_repo_name: GitHub user/repository name
• auth: Authentication credentials

BuildSourceManager

Description: Manages source code repositories.
Inherited from: AbstractClass
Inputs:

• gh_user_repo_name: GitHub user/repository name
• gh_repo_commit_hash: Commit hash of the repository

JupyterHubLocalSpawner

Description: Manages JupyterHub instances locally.
Inherited from: AbstractClass
Inputs:

• rees: Instance of the REES class
• registry_url: URL of the Docker registry
• gh_user_repo_name: GitHub user/repository name
• auth: Authentication credentials
• binder_image_tag: Docker image tag
• build_src_commit_hash: Commit hash of the repository
• container_data_mount_dir: Directory to mount data in the container
• container_build_source_mount_dir: Directory to mount build source in the container
• host_data_parent_dir: Host directory for data
• host_build_source_parent_dir: Host directory for build source

MystMD

Description: Manages MyST markdown operations such as building and converting files.
Inherited from: AbstractClass
Inputs:

• build_dir: Directory where the build will take place
• env_vars: Environment variables needed for the build process
• executable: Name of the MyST executable (default is 'myst')