opscode-cookbooks/python — pull request #7 by Motiejus (2012-05-14 20:45:34+00:00)
Title: Fix shell_out exception capturing

When "pip freeze | grep -i '^#{package_name}=='" returns no packages
grep returns 1.

This is Mixlib:ShellOut:ShellCommandFailed exception, rather than
Chef:Exceptions:ShellCommandFailed.

However, I am not really sure whether we should fix this in this cookbook or mixlib.