diff --git a/mercurial/posix.py b/mercurial/posix.py
--- a/mercurial/posix.py
+++ b/mercurial/posix.py
@@ -536,19 +536,6 @@ def gethgcmd():
 def makedir(path, notindexed):
     os.mkdir(path)
 
-def unlinkpath(f, ignoremissing=False):
-    """unlink and remove the directory if it is empty"""
-    try:
-        unlink(f)
-    except OSError as e:
-        if not (ignoremissing and e.errno == errno.ENOENT):
-            raise
-    # try removing directories that might now be empty
-    try:
-        removedirs(os.path.dirname(f))
-    except OSError:
-        pass
-
 def lookupreg(key, name=None, scope=None):
     return None
 
diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -136,7 +136,6 @@ statislink = platform.statislink
 testpid = platform.testpid
 umask = platform.umask
 unlink = platform.unlink
-unlinkpath = platform.unlinkpath
 username = platform.username
 
 # Python compatibility
@@ -1605,6 +1604,19 @@ class atomictempfile(object):
         else:
             self.close()
 
+def unlinkpath(f, ignoremissing=False):
+    """unlink and remove the directory if it is empty"""
+    try:
+        unlink(f)
+    except OSError as e:
+        if not (ignoremissing and e.errno == errno.ENOENT):
+            raise
+    # try removing directories that might now be empty
+    try:
+        removedirs(os.path.dirname(f))
+    except OSError:
+        pass
+
 def makedirs(name, mode=None, notindexed=False):
     """recursive directory creation with parent mode inheritance
 
diff --git a/mercurial/windows.py b/mercurial/windows.py
--- a/mercurial/windows.py
+++ b/mercurial/windows.py
@@ -385,19 +385,6 @@ def removedirs(name):
             break
         head, tail = os.path.split(head)
 
-def unlinkpath(f, ignoremissing=False):
-    """unlink and remove the directory if it is empty"""
-    try:
-        unlink(f)
-    except OSError as e:
-        if not (ignoremissing and e.errno == errno.ENOENT):
-            raise
-    # try removing directories that might now be empty
-    try:
-        removedirs(os.path.dirname(f))
-    except OSError:
-        pass
-
 def rename(src, dst):
     '''atomically rename file src to dst, replacing dst if it exists'''
     try: