Declare language extensions via `{-# LANGUAGE -#}`

Only language extensions not active when `-XHaskell2010` is enabled are
declared, this way we can drop many redundant
`{-# LANGUAGE ForeignFunctionInterface #-}` occurences. This commit also
removes/replaces some `{-# OPTIONS_GHC -XRecordWildCards #-}` pragmas.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/System/Posix.hs b/System/Posix.hs
index 5c6a503..09bdde6 100644
--- a/System/Posix.hs
+++ b/System/Posix.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 #ifdef __GLASGOW_HASKELL__
 {-# LANGUAGE Safe #-}
 #endif