using other data sources in lapis config

gistfile1.moon

import config from require "lapis.config"

json_file = (fname) ->
  json = require "cjson"
  file = assert io.open fname
  with json.decode file\read "*a"
    file\close!

config {"production", "development"}, ->
  -- this is the same set syntax normally used, so the left hand function can
  -- be any name
  my_json_config json_file "my_json_config.json"

-- 

-- my_json_config.json:
-- {
--   "value": "yes",
--   "color": 123,
--   "thing": [3,2,1]
-- }

c = require("lapis.config").get "development"
print c.my_json_config.thing[1]