{-# LANGUAGE CPP #-}
module CabalHelper.Compiletime.Compat.Environment where
import qualified System.Environment
#ifndef mingw32_HOST_OS
import qualified System.Posix.Env (setEnv)
#endif
lookupEnv :: String -> IO (Maybe String)
lookupEnv :: String -> IO (Maybe String)
lookupEnv String
var =
do [(String, String)]
env <- IO [(String, String)]
System.Environment.getEnvironment
Maybe String -> IO (Maybe String)
forall (m :: * -> *) a. Monad m => a -> m a
return (String -> [(String, String)] -> Maybe String
forall a b. Eq a => a -> [(a, b)] -> Maybe b
lookup String
var [(String, String)]
env)
setEnv :: String -> String -> IO ()
#ifdef mingw32_HOST_OS
setEnv = System.Environment.setEnv
#else
setEnv :: String -> String -> IO ()
setEnv String
k String
v = String -> String -> Bool -> IO ()
System.Posix.Env.setEnv String
k String
v Bool
True
#endif