pypa/pip — pull request #927 by rafaelmartins (2013-05-03 16:21:27+00:00)
Title: force LC_ALL=C for subprocess

pip parses the output of some commands, and fails when the user is running pip with a non-english locale, like pt_BR-utf8. This patch adds a 'override_locale=True` keyword argument, that adds `LC_ALL=C` to the subprocess environment.