ashb opened a new pull request #10806: URL: https://github.com/apache/airflow/pull/10806
This paves the way to a more-seamless experience with AIP-8 coming For example, this allows some providers to be installed in site packages (`/usr/local/python3.7/...`) and others to be installed in the user folder (`~/.local/lib/python3.7/...`) and both be importable. If we didn't have code in `airflow/__init__.py` this would be much easier to achieve (we simply delete the top level init file would be enough) - but sadly we can't take that route. From the docs of pkgutil: https://docs.python.org/3/library/pkgutil.html#module-pkgutil > This will add to the package’s __path__ all subdirectories of > directories on sys.path named after the package. This is useful if one > wants to distribute different parts of a single logical package as > multiple directories. Tested as follows: ``` $ pip install /wheels/apache_airflow-2.0.0.dev0-py3-none-any.whl $ ls -ald $(python -c 'import os; print(os.path.dirname(__import__("airflow").__file__))')/providers ls: cannot access '/usr/local/lib/python3.7/site-packages/airflow/providers': No such file or directory $ pip install --constraint <(echo 'apache-airflow==2.0.0.dev0') apache-airflow-backport-providers-redis $ pip install --user --constraint <(echo 'apache-airflow==2.0.0.dev0') apache-airflow-backport-providers-imap $ python -c 'import airflow.providers.imap, airflow.providers.redis; print(airflow.providers.imap.__file__); print(airflow.providers.redis.__file__)' /root/.local/lib/python3.7/site-packages/airflow/providers/imap/__init__.py /usr/local/lib/python3.7/site-packages/airflow/providers/redis/__init__.py ``` <!-- Thank you for contributing! Please make sure that your code changes are covered with tests. And in case of new features or big changes remember to adjust the documentation. Feel free to ping committers for the review! In case of existing issue, reference it using one of the following: closes: #ISSUE related: #ISSUE How to write a good git commit message: http://chris.beams.io/posts/git-commit/ --> --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/master/CONTRIBUTING.rst#pull-request-guidelines)** for more information. In case of fundamental code change, Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvements+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in [UPDATING.md](https://github.com/apache/airflow/blob/master/UPDATING.md). ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
