+if node[:kernel] && node[:kernel][:modules]
+ raidmods = node[:kernel][:modules].keys & %w[cciss hpsa mptsas mpt2sas mpt3sas megaraid_mm megaraid_sas aacraid]
+
+ default[:apt][:sources] |= ["hwraid"] unless raidmods.empty?
+end
+
+if node[:kernel][:modules].include?("ipmi_si")
+ default[:hardware][:modules] |= ["ipmi_devintf"]
+end
+
+if File.exist?("/proc/xen")