Windows symlink

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

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)