title: Error when installing 'pycryptodome'
body: <p>Whenever I install the package, I get this string out:-</p>
  
  <p>Command "/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -u -c "import setuptools, tokenize;<strong>file</strong>='/private/var/folders/l8/nrwgdgr96v33vfcd95r2yl3m0000gp/T/pip-build-AJpKPV/pycryptodomex/setup.py';exec(compile(getattr(tokenize, 'open', open)(<strong>file</strong>).read().replace('\r\n', '\n'), <strong>file</strong>, 'exec'))" install --record /var/folders/l8/nrwgdgr96v33vfcd95r2yl3m0000gp/T/pip-GEiSB1-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /private/var/folders/l8/nrwgdgr96v33vfcd95r2yl3m0000gp/T/pip-build-AJpKPV/pycryptodomex/</p>
  
  <p>Can anyone help?</p>