Anthony, check out this issue here: https://github.com/mitmproxy/mitmproxy/issues/68
You might need to install a system package: brew install libxml2 Make sure you also: brew update && brew upgrade Cheers, Joe On Thu, Jun 8, 2017 at 9:16 AM, Anthony McClay <anthony.mcc...@me.com> wrote: > Airflow Development Team, > > I am having an issue with the pip install of airflow. I cannot figure out > the difference, I have 2 Mac machines, and one machine airflow installs > correctly and the other one, airflow fails on install. > > - Please advise > > Tony McClay > anthony.mcc...@me.com > > > > creating var/folders/mf/k3gwf7795b594fkvb64vbz_r0000gn/T > cc -I/usr/include/libxml2 -I/usr/include/libxml2 -c /var/folders/mf/ > k3gwf7795b594fkvb64vbz_r0000gn/T/xmlXPathInitynysjdpe.c -o var/folders/mf/ > k3gwf7795b594fkvb64vbz_r0000gn/T/xmlXPathInitynysjdpe.o > > /var/folders/mf/k3gwf7795b594fkvb64vbz_r0000gn/T/xmlXPathInitynysjdpe.c:1:10: > fatal error: 'libxml/xpath.h' file not found > #include "libxml/xpath.h" > ^ > 1 error generated. > ************************************************************ > ********************* > Could not find function xmlCheckVersion in library libxml2. Is libxml2 > installed? > Perhaps try: xcode-select --install > ************************************************************ > ********************* > error: command '/usr/bin/clang' failed with exit status 1 > > ---------------------------------------- > Command "/Users/anthonymcclay/.virtualenvs/airflow2/bin/python -u -c > "import setuptools, tokenize;__file__='/private/var/folders/mf/ > k3gwf7795b594fkvb64vbz_r0000gn/T/pip-build-yfv3sebl/ > lxml/setup.py';f=getattr(tokenize, 'open', > open)(__file__);code=f.read().replace('\r\n', > '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record > /var/folders/mf/k3gwf7795b594fkvb64vbz_r0000gn/T/pip-wj2zx_si-record/install-record.txt > --single-version-externally-managed --compile --install-headers > /Users/anthonymcclay/.virtualenvs/airflow2/include/site/python3.5/lxml" > failed with error code 1 in /private/var/folders/mf/ > k3gwf7795b594fkvb64vbz_r0000gn/T/pip-build-yfv3sebl/lxml/ > > > Configuration > ============================================================ > =========================== > > (airflow2) Anthonys-MacBook-Pro:PythonProjects anthonymcclay$ which python > /Users/anthonymcclay/.virtualenvs/airflow2/bin/python > (airflow2) Anthonys-MacBook-Pro:PythonProjects anthonymcclay$ python > --version > Python 3.5.2 > (airflow2) Anthonys-MacBook-Pro:PythonProjects anthonymcclay$ pip > --version > pip 9.0.1 from /Users/anthonymcclay/.virtualenvs/airflow2/lib/ > python3.5/site-packages/pip-9.0.1-py3.5.egg (python 3.5) > (airflow2) Anthonys-MacBook-Pro:PythonProjects anthonymcclay$ > Darwin Anthonys-MacBook-Pro.local 15.6.0 Darwin Kernel Version 15.6.0: Tue > Apr 11 16:00:51 PDT 2017; root:xnu-3248.60.11.5.3~1/RELEASE_X86_64 x86_64 > > > > > > > > > > > > -- *Joe Napolitano *| Sr. Data Engineer www.blueapron.com | 5 Crosby Street, New York, NY 10013