[GitHub] [airflow] dkinzer commented on issue #8467: ImportError: cannot import name 'bytes_type' from 'oauthlib.common'

[GitBox <gi...@apache.org>]

dkinzer commented on issue #8467:
URL: https://github.com/apache/airflow/issues/8467#issuecomment-788521732


   @potiuk, we are seeing the same  issue as @weldpua2008 using airflow 1.10.14 and applying the 1.10.14/constraints-3.6.txt.
   
   I've determined that the constraints do not specify a version for flask_oauthlib  even though they make a direct dependency via the flask_appbuilder package and this is likely at the root of the problem:
   
   Flask-AppBuilder==2.3.4 has a dep to flask_oauthlib but the constraint do not specify this package
   https://github.com/dpgaspar/Flask-AppBuilder/blob/v2.3.4/flask_appbuilder/security/manager.py#L249
   
   I've deleted my local copy of flask_oauthlib and tried to reinstall it using the constraint and I get the following error:
   ```
   pip install flask_oauthlib --constraint=https://raw.githubusercontent.com/apache/airflow/constraints-1.10.14/constraints-3.6.txt
   flask-oauthlib 0.9.6 has requirement oauthlib!=2.0.3,!=2.0.4,!=2.0.5,<3.0.0,>=1.1.2, but you'll have oauthlib 3.1.0 which is incompatible.
   flask-oauthlib 0.9.6 has requirement requests-oauthlib<1.2.0,>=0.6.2, but you'll have requests-oauthlib 1.3.0 which is incompatible.
   ```
   So I think this incompatibility is at the heart of the issue.
   


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