title: pip install matplotlib error, error: /usr/local/man/man1/nosetests.1: Permission denied
body: <p>I just had the following error when trying to install matplotlib using homebrew: </p>
  
  <pre><code>...[tons of output, then:]
  
  running install_data
  
  copying nosetests.1 -&gt; /usr/local/man/man1
  
  error: /usr/local/man/man1/nosetests.1: Permission denied
  
  ----------------------------------------
  Cleaning up...
  Command /usr/local/Cellar/python/2.7.6/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -c "import setuptools, tokenize;__file__='/private/var/folders/ys/l1bnz3cx34z3h4mrkny947v40000gr/T/pip_build_schultzm/nose/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/ys/l1bnz3cx34z3h4mrkny947v40000gr/T/pip-xWlPBu-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /private/var/folders/ys/l1bnz3cx34z3h4mrkny947v40000gr/T/pip_build_schultzm/nose
  Storing debug log for failure in /Users/schultzm/.pip/pip.log
  </code></pre>
  
  <p>I've been searching for an answer, could not find one.  However, I solved it (so posting it here for others) by doing:</p>
  
  <pre><code>sudo chmod 777 /usr/local/man/man1/
  </code></pre>
  
  <p>and then re-running the install (i.e., pip install matplotlib) and it ran fine.  </p>