Enable support for macOS 10.12 Sierra

lib/knife-solo/bootstraps/darwin.rb

@@ -7,11 +7,22 @@ def issue
 
     def distro
       case issue
-      when %r{10.(?:[6-9]|10)}
+      when %r{10.(?:[6-9]|1[0-2])}
         {:type => 'omnibus'}
       else
         raise "OS X version #{issue} not supported"
       end
     end
+
+    def bootstrap!
+      super
+      if issue.split('.')[1].to_i >= 11
+        # El Capitan and beyond do not have /usr/local/bin in the default paths,
+        # which is where chef gets installed.
+        path = "/usr/local/bin"
+        path_command = "[[ $PATH == *#{path}* ]] || echo 'export PATH=#{path}:$PATH' >> ~/.bashrc"
+        run_command(path_command)
+      end
+    end
   end
 end

lib/knife-solo/resources/solo.rb.erb

@@ -19,3 +19,7 @@ cookbook_path << File.join(base, 'cookbooks-<%= i+1 %>') # <%= path %>
 <% proxy_settings.each_pair do |k, v| -%>
 <%= k %>     "<%= v %>"
 <% end -%>
+
+# If the TMPDIR is not world-readable, set it to a location that is. This is
+# necessary so that `script` resources can complete as non-root users on macOS.
+ENV['TMPDIR'] = "/tmp"