ashb commented on issue #4892: [AIRFLOW-XXX] Enforce order in imports URL: https://github.com/apache/airflow/pull/4892#issuecomment-472369397 I think the main point here is that this dep is not "part" of Airflow but a feature to ease development only. http://www.apache.org/legal/resolved.html#optional > Apache projects can rely on components under prohibited licenses if the component is only needed for optional features Given Airflow itself will work fine without this module, and we (Airflow) don't provide the source it's okay. For clarity we maybe should have this in an extra section from `devel` to make it "more optional" even though we'll use it in CI. Does that make sense?
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