From 449517c5111273011081dced4fef5cb4932730cf Mon Sep 17 00:00:00 2001
From: Dmitry Petrov <dmitry.petrov@nevesomo.com>
Date: Fri, 7 Apr 2017 17:44:25 -0700
Subject: [PATCH] Windows symlink

---
 dvc/__init__.py     | 28 ++++++++++++++++++++++++++++
 tests/test_repro.py |  1 +
 2 files changed, 29 insertions(+)

diff --git a/dvc/__init__.py b/dvc/__init__.py
index e69de29bb..d9cfe8679 100644
--- a/dvc/__init__.py
+++ b/dvc/__init__.py
@@ -0,0 +1,28 @@
+import os
+
+__CSL = None
+
+
+def win_symlink(source, link_name):
+    '''symlink(source, link_name) - DVC override for Windows
+       Creates a symbolic link pointing to source named link_name'''
+
+    flags = 0
+    if source is not None and os.path.isdir(source):
+        flags = 1
+    if __CSL(link_name, source, flags) == 0:
+        raise ctypes.WinError()
+
+
+def setup():
+    if os.name == 'nt':
+        global __CSL
+        if __CSL is None:
+            import ctypes
+            csl = ctypes.windll.kernel32.CreateSymbolicLinkW
+            csl.argtypes = (ctypes.c_wchar_p, ctypes.c_wchar_p, ctypes.c_uint32)
+            csl.restype = ctypes.c_ubyte
+            __CSL = csl
+
+        os.symlink = win_symlink
+    pass
diff --git a/tests/test_repro.py b/tests/test_repro.py
index bc05a9740..072955710 100644
--- a/tests/test_repro.py
+++ b/tests/test_repro.py
@@ -89,3 +89,4 @@ class ReproChangedDeepDependency(ReproChangedDependency):
         CmdRepro(self.settings).run()
 
         self.assertEqual(open(self.file_name_res).read(), 'Goodbye\nBobby')
+        self.assertEqual(1, 2)