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3 changes: 3 additions & 0 deletions docs/installation.rst
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,9 @@ You can also install Airflow with support for extra features like ``s3`` or ``po
.. note:: GPL dependency

One of the dependencies of Apache Airflow by default pulls in a GPL library ('unidecode').

If you are not concerned about the GPL dependency, export the following environment variable prior to installing airflow: ``export AIRFLOW_GPL_UNIDECODE=yes``.

In case this is a concern you can force a non GPL library by issuing
``export SLUGIFY_USES_TEXT_UNIDECODE=yes`` and then proceed with the normal installation.
Please note that this needs to be specified at every upgrade. Also note that if `unidecode`
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