feat(third_party/bazel): Check in rules_haskell from Tweag

third_party/bazel/rules_haskell/tests/library-with-sysincludes/IntLib.hsc

@@ -0,0 +1,15 @@
+{-# LANGUAGE CPP #-}
+
+module IntLib (crc) where
+
+import Foreign.Ptr
+import Foreign.C.Types
+
+#include <zlib.h>
+#include "foo.h"
+
+foreign import ccall crc32 :: CLong -> Ptr () -> CInt -> IO ()
+
+crc = crc32 0 nullPtr 0
+
+z = #{size struct gz_header_s}