Extract host specific hammerspoon config to separate files

hammerspoon/env.lua

@@ -2,16 +2,13 @@ local obj = {
   hostname = nil
 }
 
-function obj:init()
-  self.hostname = self.getHostname()
-end
-
-function obj:getHostname()
-  local f = io.popen ("hostname")
+function obj.getHostname()
+  local f = io.popen ("hostname -s")
   local hostname = f:read("*a") or ""
   f:close()
   hostname = string.gsub(hostname, "\n$", "")
   return hostname
 end
 
+obj.hostname = obj.getHostname()
 return obj