Delay start of NSSM created service until the end of a Chef run.

gistfile1.rb

nssm_service "chef-client" do
  application "C:/opscode/chef/embedded/bin/ruby.exe"
  options "C:/opscode/chef/bin/chef-client -C C:/chef/client.rb -i 1800 -s 120"
end

service "chef-client" do
  action :nothing
  only_if { WMI::Win32_Service.find(:all).collect{|s| s.name}.include?("chef-client") }
end

template "C:\\opscode\\chef\\service-trigger.txt" do
  source "service-trigger.txt.erb"
  notifies :restart, "service[chef-client]"
end