Make the service optional (like for PHP for example)

Author: gerhard

providers/package.rb

@@ -8,7 +8,7 @@
     version new_resource.version
     options package_options
     only_if "[ $(dpkg -l #{new_resource.name} 2>&1 | grep #{new_resource.version}.* | grep -c '^#{package_status}[ic] ') = 0 ]"
-    notifies :restart, resources(:service => new_resource.service)
+    notifies :restart, resources(:service => new_resource.service) if new_resource.service
   end
 
   # Legacy, calling the hold/unhold action is the recommended way

resources/package.rb

@@ -3,7 +3,7 @@
         :unhold
 
 attribute :package_name,  :kind_of => String, :name_attribute => true
-attribute :service,       :kind_of => String, :required => true
+attribute :service,       :kind_of => String
 attribute :version,       :kind_of => String
 attribute :freeze,        :kind_of => [FalseClass, TrueClass], :default => false
 attribute :options,       :kind_of => String,                  :default => ""