When trying to install Airflow using
pip also tries to install mysql as a dependency.
- First of all we don't need any mysql dependency
- Also `pip mysql` to build requires a local mysql installation and it may have its own issues like for example discussed in http://stackoverflow.com/questions/5178292/pip-install-mysql-python-fails-with-environmenterror-mysql-config-not-found/
Please remove mysql as a dependency when not explicitly requested through airflow[mysql].
It seems devel_hadoop requires mysql for some reason. It would be awesome to remove this dependency.