[GitHub] [airflow] uranusjr edited a comment on issue #14989: Make Docs builds fallback in case external docs sources are missing

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uranusjr edited a comment on issue #14989:
URL: https://github.com/apache/airflow/issues/14989#issuecomment-807590926


   I think I’ve it mostly figured out. Since we are already downloading the inventory locally ourselves into `docs/_inventory_cache`, we don’t really need to use the tuple form mentioned above. Instead, we can leave `conf.py` unchanged, but instead change `fetch_inventories.py` to check the mirror if the primary source fails during `_inventory_cache` population.
   
   As mentioned above, the mirror inventory can be populated periodically. So a can will be added to `ci.yml` to fetch the inventory and populate them to S3.
   
   Does that sound like a plan? I’ll try to come up with something.


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