somewhy fallback [1] no longer works
set one in linux/platform

[1] https://github.com/opscode/ohai/blob/7.4.0/lib/ohai/plugins/platform.rb#L26

--- ohai-8.16.0/lib/ohai/plugins/linux/platform.rb~	2016-05-12 01:13:29.000000000 +0300
+++ ohai-8.16.0/lib/ohai/plugins/linux/platform.rb	2016-06-01 22:53:00.774030283 +0300
@@ -199,6 +199,8 @@
       platform_family "arch"
     when /exherbo/
       platform_family "exherbo"
+    when /pld/
+      platform_family "pld"
     when /alpine/
       platform_family "alpine"
     end