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{- portable environment variables, without any dependencies
-
- Copyright 2013 Joey Hess <id@joeyh.name>
-
- License: BSD-2-clause
-}
{-# OPTIONS_GHC -fno-warn-tabs #-}
module Utility.Env.Basic (
getEnv,
getEnvDefault,
) where
import Utility.Exception
import Control.Applicative
import Data.Maybe
import Prelude
import qualified System.Environment as E
getEnv :: String -> IO (Maybe String)
getEnv = catchMaybeIO . E.getEnv
getEnvDefault :: String -> String -> IO String
getEnvDefault var fallback = fromMaybe fallback <$> getEnv var
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