From 10e10f9535dc371ccdadfa831a695a5a503eec7e Mon Sep 17 00:00:00 2001
From: Ruslan Kuprieiev <ruslan@iterative.ai>
Date: Sun, 23 Sep 2018 13:29:18 +0300
Subject: [PATCH] reflink: osx: check that not older than High Sierra

Signed-off-by: Ruslan Kuprieiev <ruslan@iterative.ai>
---
 dvc/system.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dvc/system.py b/dvc/system.py
index 1a3aac2ee..56121e7c1 100644
--- a/dvc/system.py
+++ b/dvc/system.py
@@ -36,6 +36,13 @@ class System(object):
     @staticmethod
     def _reflink_darwin(src, dst):
         import ctypes
+        import platform
+
+        version = platform.mac_ver()[0]
+        major, minor, patch = version.split('.')
+        # Starting from High Sierra
+        if major < 10 or (major == 10 and minor < 13):
+            return -1
 
         clonefile = ctypes.CDLL('libc.dylib').clonefile
         clonefile.argtypes = [ctypes.c_char_p,