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Cloud Foundry Python Buildpack

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A Cloud Foundry buildpack for Python based apps.

This buildpack supports running Django and Flask apps.

Buildpack User Documentation

Official buildpack documentation can be found at python buildpack docs.

Adding new dependencies

If you want to add a new dependency to the buildpack, please add it to the config.yml file. For example, if you want to add a new version of Python, add an entry like the following:

python:
  lines:
    - line: 3.14.X
      deprecation_date: 2030-10-07
      link: https://peps.python.org/pep-0745/

The new dependency will be automatically added to the buildpack manifest.yml file.

Building the Buildpack

To build this buildpack, run the following commands from the buildpack's directory:

  1. Source the .envrc file in the buildpack directory.

    source .envrc

    To simplify the process in the future, install direnv which will automatically source .envrc when you change directories.

  2. Install buildpack-packager

    go install github.com/cloudfoundry/libbuildpack/packager/buildpack-packager@latest

  3. Build the buildpack

    buildpack-packager build [ --cached=(true|false) ]

  4. Use in Cloud Foundry

    Upload the buildpack to your Cloud Foundry and optionally specify it by name

    cf create-buildpack [BUILDPACK_NAME] [BUILDPACK_ZIP_FILE_PATH] 1
cf push my_app [-b BUILDPACK_NAME]

Testing

Buildpacks use the Cutlass framework for running integration tests.

To test this buildpack, run the following commands from the buildpack's directory:

  1. Source the .envrc file in the buildpack directory.

    source .envrc

    To simplify the process in the future, install direnv which will automatically source .envrc when you change directories.

  2. Run unit tests

    ./scripts/unit.sh

  3. Run integration tests

    Buildpacks use the Cutlass framework for running integration tests against Cloud Foundry. Before running the integration tests, you need to login to your Cloud Foundry using the cf cli:

    cf login -a https://api.your-cf.com -u name@example.com -p pa55woRD

    Note that your user requires permissions to run cf create-buildpack and cf update-buildpack. To run the integration tests, run the following command from the buildpack's directory:

    ./scripts/integration.sh

  4. Note: To run the network tests, you must have Docker installed.

Contributing

Find our guidelines here.

Help and Support

Join the #buildpacks channel in our Slack community if you need any further assistance.

Reporting Issues

Open a GitHub issue on this project here.

Active Development

The project backlog is on Pivotal Tracker.