virtualenvwrapper: Command "python setup.py egg_info" failed with error code 1

When trying to install virtualenvwrapper on my mac os v10.11 using:

sudo pip install virtualenvwrapper

I got the following error message:

Command "python setup.py egg_info" failed with error code 1 in /private/tmp/pip-build-ktzs4x/virtualenvwrapper/

Here are my logs: Collecting virtualenvwrapper Downloading virtualenvwrapper-4.7.2.tar.gz (90kB) 100% |████████████████████████████████| 92kB 243kB/s Complete output from command python setup.py egg_info: ERROR:root:Error parsing Traceback (most recent call last): File "/usr/local/lib/python2.7/site-packages/pbr/core.py", line 111, in pbr attrs = util.cfg_to_args(path, dist.script_args) File "/usr/local/lib/python2.7/site-packages/pbr/util.py", line 264, in cfg_to_args wrap_commands(kwargs) File "/usr/local/lib/python2.7/site-packages/pbr/util.py", line 576, in wrap_commands for cmd, _ in dist.get_command_list(): File "/usr/local/lib/python2.7/site-packages/setuptools/dist.py", line 530, in get_command_list return _Distribution.get_command_list(self) File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 772, in get_command_list klass = self.get_command_class(cmd) File "/usr/local/lib/python2.7/site-packages/setuptools/dist.py", line 514, in get_command_class return _Distribution.get_command_class(self, command) File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 815, in get_command_class import (module_name) File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/command/check.py", line 13, in from docutils.utils import Reporter File "/usr/local/lib/python2.7/site-packages/docutils/utils/init.py", line 20, in import docutils.io File "/usr/local/lib/python2.7/site-packages/docutils/io.py", line 18, in from docutils.utils.error_reporting import locale_encoding, ErrorString, ErrorOutput File "/usr/local/lib/python2.7/site-packages/docutils/utils/error_reporting.py", line 47, in locale_encoding = locale.getlocale()[1] or locale.getdefaultlocale()[1] File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/locale.py", line 543, in getdefaultlocale return _parse_localename(localename) File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/locale.py", line 475, in _parse_localename raise ValueError, 'unknown locale: %s' % localename ValueError: unknown locale: UTF-8 error in setup command: Error parsing /private/tmp/pip-build-ktzs4x/virtualenvwrapper/setup.cfg: ValueError: unknown locale: UTF-8

---------------------------------------- Command "python setup.py egg_info" failed with error code 1 in

/private/tmp/pip-build-ktzs4x/virtualenvwrapper/