google/flaxNew scan
94/ 100 · A

A well-known project done right. Strong docs and solid engineering throughout.

Flax is a neural network library for JAX that is designed for flexibility.

Jupyter Notebook7,236 starsApache-2.0updated 9d ago
DocumentationREADME, setup, examples, license
89
EngineeringTests, CI, linting, lockfiles
95
Project healthDescription, activity, stars, deps
100

What to fix first

The highest-impact improvements for this repo.

  1. 1
    Install and run instructions
    DocumentationInfo

    Add a .env.example listing all required environment variables so contributors know what to set up.

  2. 2
    Reproducibility
    EngineeringInfo

    Add a Dockerfile, .nvmrc, or .python-version to pin the runtime version and make the environment reproducible.

  3. 3
    Reproducibility
    EngineeringInfo

    Add .github/dependabot.yml with at least one package-ecosystem entry so dependencies are updated automatically.

Detailed breakdown

Documentation

89
  • README100
    • README is present.
    • README is well structured with multiple sections.
    • README includes screenshots or visuals. Great for first impressions.
    • README has code examples.
    • README links to a live demo or deployed app.
    • README includes status badges.
  • Install and run instructions90
    • README documents how to install the project.
    • README documents how to run the project.
    • If your project uses environment variables, add a .env.example listing them (+10 pts).Add a .env.example listing all required environment variables so contributors know what to set up.
  • License100
    • Licensed under Apache-2.0.
  • Contributing guide45
    • CONTRIBUTING guide is very brief (0 pts for depth); 150+ words earns +6 pts, 400+ earns +12 pts.Add setup instructions, code style notes, and how to run tests.
    • Contributing guide lacks a setup section (−12 pts).Show new contributors how to get a local dev environment running.
    • Contributing guide lacks a code style section (−8 pts).Describe your linting/formatting rules and how to run them (e.g. npm run lint, ruff check .).
    • Contributing guide lacks a testing section (−8 pts).Show contributors how to run the test suite (e.g. npm test, pytest, cargo test).
    • Contributing guide lacks a PR workflow section (−8 pts).Explain how to fork, branch, and open a pull request so contributors know what to expect.
    • Contributing guide has no code examples (−5 pts).Add code blocks showing example commands for setup, running tests, and submitting a PR.
    • Optional: add a Code of Conduct (+5 pts).A CODE_OF_CONDUCT.md signals that your project is welcoming. GitHub has a template you can add in one click.

Engineering

95
  • Tests100
    • Test files detected (docs/_ext/codediff_test.py).
    • Pytest configured via [tool.pytest.ini_options] in pyproject.toml with test files present.
    • Coverage reporting is configured in pyproject.toml.
  • CI/CD100

    Not applicable?

    • CI is configured (.github/workflows/flax_test.yml).
    • CI workflow runs tests.
    • CI runs on pull requests, not just on pushes to main.
    • CI workflow runs a lint or format check.
    • CI runs type checking (tsc, mypy, cargo check, etc.).
    • CI reports or uploads test coverage.
    • CI caches dependencies for faster runs.
    • CI tests across multiple environments or versions.
  • Linting and formatting100
    • pyproject.toml configures both a formatter/linter (ruff/black) and type checking (mypy).
  • Reproducibility70
    • Lockfile present (.github/analytics/requirements.txt). Installs are reproducible.
    • No Dockerfile or runtime version pin found. Adding one earns +10 pts.Add a Dockerfile, .nvmrc, or .python-version to pin the runtime version and make the environment reproducible.
    • No Dependabot config (adding it earns up to +20 pts).Add .github/dependabot.yml with at least one package-ecosystem entry so dependencies are updated automatically.
  • Issue and PR templates90
    • Issue or PR templates present.
    • Optional: add a SECURITY.md.A SECURITY.md explains how to responsibly disclose vulnerabilities. Worth adding once the project has real users.

Project health

100
  • Dependency manifest100
    • Dependency manifest found (pyproject.toml).
    • pyproject.toml has a [project] table with package metadata.
    • pyproject.toml includes a description.
    • pyproject.toml specifies requires-python, preventing installs on incompatible versions.
    • pyproject.toml has a [build-system] table. The package can be built and published.
  • Repository metadata100
    • Repository has a description.
    • Primary language detected: Jupyter Notebook.
    • pyproject.toml [project] metadata is complete (description, authors, urls).
  • Activity100
    • Actively maintained (pushed within the last month).
    • 7,236 stars.
  • Housekeeping100
    • .gitignore present.
Repository files21 root entries
  • .github
    Good: CI is configured (.github/workflows/flax_test.yml).
    Good: Lockfile present (.github/analytics/requirements.txt). Installs are reproducible.
    Good: Issue or PR templates present.
  • benchmarks
  • docs
    Good: Test files detected (docs/_ext/codediff_test.py).
  • docs_nnx
  • examples
  • flax
  • flaxlib_src
  • images
  • tests
  • .git-blame-ignore-revs
  • .gitignore
    Good: .gitignore present.
  • .pre-commit-config.yaml
  • .readthedocs.yml
  • AUTHORS
  • CHANGELOG.md
    Info: CONTRIBUTING guide is very brief (0 pts for depth); 150+ words earns +6 pts, 400+ earns +12 pts.Fix: Add setup instructions, code style notes, and how to run tests.
    Info: Contributing guide lacks a setup section (−12 pts).Fix: Show new contributors how to get a local dev environment running.
    Info: Contributing guide lacks a code style section (−8 pts).Fix: Describe your linting/formatting rules and how to run them (e.g. npm run lint, ruff check .).
    Info: Contributing guide lacks a testing section (−8 pts).Fix: Show contributors how to run the test suite (e.g. npm test, pytest, cargo test).
    Info: Contributing guide lacks a PR workflow section (−8 pts).Fix: Explain how to fork, branch, and open a pull request so contributors know what to expect.
    Info: Contributing guide has no code examples (−5 pts).Fix: Add code blocks showing example commands for setup, running tests, and submitting a PR.
  • contributing.md
  • LICENSE
    Good: Licensed under Apache-2.0.
  • nnx.py
  • pylintrc
  • pyproject.toml
    Good: Dependency manifest found (pyproject.toml).
  • README.md
    Good: README is present.
    Good: README is well structured with multiple sections.
    Good: README includes screenshots or visuals. Great for first impressions.
    Good: README has code examples.
    Good: README links to a live demo or deployed app.
    Good: README includes status badges.
    Good: README documents how to install the project.
    Good: README documents how to run the project.