confide: derive typeclass instances for decoding types from HOCON conf

[ bsd3, data, library ] [ Propose Tags ]


Maintainer's Corner

Package maintainers

For package maintainers and hackage trustees


  • No Candidates
Versions [RSS],,,
Dependencies base (>=4.7 && <5), deiko-config (>=, exceptions (==0.8.3), text (== [details]
License BSD-3-Clause
Copyright 2018 Alex Milkov
Author Alex Milkov
Category Data
Home page
Bug tracker
Source repo head: git clone
Uploaded by amilkov at 2018-03-08T19:18:27Z
Reverse Dependencies 1 direct, 0 indirect [details]
Downloads 2317 total (11 in the last 30 days)
Rating (no votes yet) [estimated by Bayesian average]
Your Rating
  • λ
  • λ
  • λ
Status Docs available [build log]
Last success reported on 2018-03-08 [all 1 reports]

Readme for confide-

[back to package description]


Build status

Confide port to Haskell (using GHC.Generics as opposed to Shapeless to generate FromConf typeclass instances). Uses deiko-config to parse HOCON .conf file and read in types


HOCON .conf file


b {
  z {

{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeApplications #-}

module Test where

import Data.Confide
import Data.Confide.Generic
import qualified Data.Text as T

data Foo = Foo {x :: Integer} deriving (Generic, Show)
data Bar = Bar {y :: Bool, z :: Foo} deriving (Generic, Show)
data Baz = Baz {a :: T.Text, b :: Bar} deriving (Generic, Show)

instance FromConf Foo
instance FromConf Bar
instance FromConf Baz

main :: IO ()
main = do
  c <- loadConfig "project/path/to/confFile.conf"
  baz <- get @Baz "" c
  print baz


$ main 
Baz {a = "hello", b = Bar {y = True, z = Foo {x = 5}}}