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CONTRIBUTING.md

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Contributing to Dispatch Highlevel Interface

Build

You can use build to simply build the source and binary distribution:

python -m pip install build
python -m build

Local development

You can use editable installs to develop the project locally (it will install all the dependencies too):

python -m pip install -e .

Or you can install all development dependencies (mypy, pylint, pytest, etc.) in one go too:

python -m pip install -e .[dev]

If you don't want to install all the dependencies, you can also use nox to run the tests and other checks creating its own virtual environments:

python -m pip install .[dev-noxfile]
nox

You can also use nox -R to reuse the current testing environment to speed up test at the expense of a higher chance to end up with a dirty test environment.

Running tests / checks individually

For a better development test cycle you can install the runtime and test dependencies and run pytest manually.

python -m pip install .[dev-pytest]  # included in .[dev] too

# And for example
pytest tests/test_*.py

Or you can use nox:

nox -R -s pytest -- test/test_*.py

The same appliest to pylint or mypy for example:

nox -R -s pylint -- test/test_*.py
nox -R -s mypy -- test/test_*.py

Building the documentation

To build the documentation, first install the dependencies (if you didn't install all dev dependencies):

python -m pip install -e .[dev-mkdocs]

Then you can build the documentation (it will be written in the site/ directory):

mkdocs build

Or you can just serve the documentation without building it using:

mkdocs serve

Your site will be updated live when you change your files (provided that you used pip install -e ., beware of a common pitfall of using pip install without -e, in that case the API reference won't change unless you do a new pip install).

To build multi-version documentation, we use mike. If you want to see how the multi-version sites looks like locally, you can use:

mike deploy my-version
mike set-default my-version
mike serve

mike works in mysterious ways. Some basic information:

  • mike deploy will do a mike build and write the results to your local gh-pages branch. my-version is an arbitrary name for the local version you want to preview.
  • mike set-default is needed so when you serve the documentation, it goes to your newly produced documentation by default.
  • mike serve will serve the contents of your local gh-pages branch. Be aware that, unlike mkdocs serve, changes to the sources won't be shown live, as the mike deploy step is needed to refresh them.

Be careful not to use --push with mike deploy, otherwise it will push your local gh-pages branch to the origin remote.

That said, if you want to test the actual website in your fork, you can always use mike deploy --push --remote your-fork-remote, and then access the GitHub pages produced for your fork.

Releasing

These are the steps to create a new release:

  1. Get the latest head you want to create a release from.

  2. Update the RELEASE_NOTES.md file if it is not complete, up to date, and remove template comments (<!-- ... ->) and empty sections. Submit a pull request if an update is needed, wait until it is merged, and update the latest head you want to create a release from to get the new merged pull request.

  3. Create a new signed tag using the release notes and a semver compatible version number with a v prefix, for example:

    git tag -s --cleanup=whitespace -F RELEASE_NOTES.md v0.0.1

  4. Push the new tag.

  5. A GitHub action will test the tag and if all goes well it will create a GitHub Release, and upload a new package to PyPI automatically.

  6. Once this is done, reset the RELEASE_NOTES.md with the template:

    cp .github/RELEASE_NOTES.template.md RELEASE_NOTES.md

    Commit the new release notes and create a PR (this step should be automated eventually too).

  7. Celebrate!

Cross-Arch Testing

This project has built-in support for testing across multiple architectures. Currently, our CI conducts tests on arm64 machines using QEMU emulation. We also have the flexibility to expand this support to include additional architectures in the future.

This project contains Dockerfiles that can be used in the CI to test the python package in non-native machine architectures, e.g., arm64. The Dockerfiles exist in the directory .github/containers/nox-cross-arch, and follow a naming scheme so that they can be easily used in build matrices in the CI, in nox-cross-arch job. The naming scheme is:

<arch>-<os>-python-<python-version>.Dockerfile

E.g.,

arm64-ubuntu-20.04-python-3.11.Dockerfile

If a Dockerfile for your desired target architecture, OS, and python version does not exist here, please add one before proceeding to add your options to the test matrix.