From d4fda80fb4efd88a58a31c084437ec39e14f9f1e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20Smr=C5=BE?= <roman.smrz@seznam.cz>
Date: Mon, 19 Feb 2024 21:11:45 +0100
Subject: Fix compatibility with unix-2.8

---
 src/Erebos/Storage/Internal.hs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Erebos/Storage/Internal.hs b/src/Erebos/Storage/Internal.hs
index 47d344f..a61e705 100644
--- a/src/Erebos/Storage/Internal.hs
+++ b/src/Erebos/Storage/Internal.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE CPP #-}
+
 module Erebos.Storage.Internal where
 
 import Codec.Compression.Zlib
@@ -229,7 +231,14 @@ openLockFile :: FilePath -> IO Handle
 openLockFile path = do
     createDirectoryIfMissing True (takeDirectory path)
     fd <- retry 10 $
+#if MIN_VERSION_unix(2,8,0)
+        openFd path WriteOnly defaultFileFlags
+            { creat = Just $ unionFileModes ownerReadMode ownerWriteMode
+            , exclusive = True
+            }
+#else
         openFd path WriteOnly (Just $ unionFileModes ownerReadMode ownerWriteMode) (defaultFileFlags { exclusive = True })
+#endif
     fdToHandle fd
   where
     retry :: Int -> IO a -> IO a
-- 
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