opscode/chef — pull request #2395 by jdmundrawala (2014-11-10 19:23:18+00:00)
Title: chef-shell checks platform when looking for client.rb and solo.rb.

https://github.com/opscode/chef/issues/2380 pointed out that on
windows, -c is required with the -z flag because it would assume
nix and look in /etc/chef for client.rb