# File lib/chef-config/mixin/credentials.rb, line 38
      def credentials_profile(profile = nil)
        context_file = PathHelper.home(".chef", "context").freeze
        if !profile.nil?
          profile
        elsif ENV.include?("CHEF_PROFILE")
          ENV["CHEF_PROFILE"]
        elsif File.file?(context_file)
          File.read(context_file).strip
        else
          "default"
        end
      end