[jira] [Created] (AIRFLOW-3796) Airflow is pegged at pendulum 1.4.4, which breaks with pip 19.0.1

["Joe Jasinski (JIRA)" <ji...@apache.org>]

Joe Jasinski created AIRFLOW-3796:
-------------------------------------

             Summary: Airflow is pegged at pendulum 1.4.4, which breaks with pip 19.0.1
                 Key: AIRFLOW-3796
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-3796
             Project: Apache Airflow
          Issue Type: Bug
            Reporter: Joe Jasinski


Installing Apache Airflow using pip 18.0 works fine, but upgrading to pip 19.0.1 breaks. The package "pendulum==1.4.4" is failing when it tries to install. Looks like I see this python 2.7.

*Steps to reproduce:*

docker run -it python:2.7 bash
pip install pip==19.0.1 --upgrade
export AIRFLOW_GPL_UNIDECODE=yes   # ugly
pip install apache-airflow 

 

*Error:* 

 Downloading https://files.pythonhosted.org/packages/85/a5/9fc15751f9725923b170ad37d6c61031fc9e941bafd5288ca6ee51233284/pendulum-1.4.4.tar.gz (74kB)
 100% |████████████████████████████████| 81kB 41.3MB/s 
 Installing build dependencies ... done
 Getting requirements to build wheel ... error
 Complete output from command /usr/local/bin/python /usr/local/lib/python2.7/site-packages/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /tmp/tmpCCHjD4:
 Traceback (most recent call last):
 File "/usr/local/lib/python2.7/site-packages/pip/_vendor/pep517/_in_process.py", line 207, in <module>
 main()
 File "/usr/local/lib/python2.7/site-packages/pip/_vendor/pep517/_in_process.py", line 197, in main
 json_out['return_val'] = hook(**hook_input['kwargs'])
 File "/usr/local/lib/python2.7/site-packages/pip/_vendor/pep517/_in_process.py", line 54, in get_requires_for_build_wheel
 return hook(config_settings)
 File "/tmp/pip-build-env-80gsjf/overlay/lib/python2.7/site-packages/setuptools/build_meta.py", line 115, in get_requires_for_build_wheel
 return _get_build_requires(config_settings, requirements=['wheel'])
 File "/tmp/pip-build-env-80gsjf/overlay/lib/python2.7/site-packages/setuptools/build_meta.py", line 101, in _get_build_requires
 _run_setup()
 File "/tmp/pip-build-env-80gsjf/overlay/lib/python2.7/site-packages/setuptools/build_meta.py", line 85, in _run_setup
 exec(compile(code, __file__, 'exec'), locals())
 File "setup.py", line 47, in <module>
 from build import *
 File "/usr/local/lib/python2.7/site-packages/pip/_vendor/pep517/build.py", line 7, in <module>
 from pip._vendor import pytoml
 ImportError: No module named pip._vendor



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