2 files changed, 18 insertions, 5 deletions
diff --git a/src/CabalHelper/Compiletime/Compat/Environment.hs b/src/CabalHelper/Compiletime/Compat/Environment.hs
index 916f782..535bcc6 100644
--- a/src/CabalHelper/Compiletime/Compat/Environment.hs
+++ b/src/CabalHelper/Compiletime/Compat/Environment.hs
@@ -1,6 +1,19 @@
+{-# LANGUAGE CPP #-}
 module CabalHelper.Compiletime.Compat.Environment where
 
-import System.Environment
+import qualified System.Environment
+#ifndef mingw32_HOST_OS
+import qualified System.Posix.Env (setEnv)
+#endif
 
 lookupEnv :: String -> IO (Maybe String)
-lookupEnv var = do env <- getEnvironment; return (lookup var env)
+lookupEnv var =
+  do env <- System.Environment.getEnvironment
+     return (lookup var env)
+
+setEnv :: String -> String -> IO ()
+#ifdef mingw32_HOST_OS
+setEnv = System.Environment.setEnv
+#else
+setEnv k v = System.Posix.Env.setEnv k v True
+#endif
diff --git a/src/CabalHelper/Compiletime/Data.hs b/src/CabalHelper/Compiletime/Data.hs
index dce3570..ca291e9 100644
--- a/src/CabalHelper/Compiletime/Data.hs
+++ b/src/CabalHelper/Compiletime/Data.hs
@@ -33,9 +33,9 @@ import Language.Haskell.TH
 import System.Directory
 import System.FilePath
 import System.IO.Temp
-import System.Posix.Files
-import System.Posix.Time
-import System.Posix.Types
+import System.PosixCompat.Files
+import System.PosixCompat.Time
+import System.PosixCompat.Types
 import Prelude
 
 import CabalHelper.Compiletime.Compat.Environment