title: Why fatal error: 'yaml.h' file not found when installing PyYAML?
body: <p>I'm trying out downloading PyYAML and install it following the instructions here <a href="http://pyyaml.org/wiki/PyYAML" rel="noreferrer">http://pyyaml.org/wiki/PyYAML</a></p>
  
  <p>So I downloaded the ZIP package: <a href="http://pyyaml.org/download/pyyaml/PyYAML-3.11.zip" rel="noreferrer">http://pyyaml.org/download/pyyaml/PyYAML-3.11.zip</a> and then cd into that folder and run <code>python setup.py --with-libyaml install</code>, the error message I got is <code>ext/_yaml.h:2:10: fatal error: 'yaml.h' file not found</code></p>
  
  <p>But I checked the PyYAML-3.11 folder, the yaml.h is there...</p>
  
  <p>UPDATE: I tried the methods here <a href="http://sandlininc.com/?p=500" rel="noreferrer">http://sandlininc.com/?p=500</a></p>
  
  <p><code>$ sudo easy_install pip</code><br>
  <code>$ brew install libyaml</code><br>
  <code>$ sudo easy_install setuptools</code><br>
  <code>$ pip install -U PyYAML</code></p>
  
  <p>Then I tried the <code>python setup.py --with-libyaml install</code> again. I got the message <strong>error: /Library/Python/2.7/site-packages/_yaml.so: Permission denied</strong></p>
  
  <p>Did I miss anything? Why the permission was denied? Thank you!</p>