Warnings

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
haskell · Aug 16, 2016 · 825f48e · 825f48e
1 parent 125388f
commit 825f48e
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/Cabal/Distribution/Compat/Environment.hs b/Cabal/Distribution/Compat/Environment.hs
@@ -14,6 +14,8 @@ import qualified System.Environment as System
 import System.Environment (lookupEnv)
 #if __GLASGOW_HASKELL__ >= 708
 import System.Environment (unsetEnv)
+#else
+import Foreign.C.Error (throwErrnoIf_)
 #endif
 #else
 import Distribution.Compat.Exception (catchIO)