From 09223442f572695c22bdf2959206411e764aa85c Mon Sep 17 00:00:00 2001
From: rxxg <robbiexgibson@yahoo.com>
Date: Wed, 8 Jan 2020 16:16:21 +0100
Subject: [PATCH 1/5] Use speedcopy module for faster copies across network
 boundaries

---
 dvc/system.py | 4 ++--
 setup.py      | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/dvc/system.py b/dvc/system.py
index d32663b4af..a6fc77bf4a 100644
--- a/dvc/system.py
+++ b/dvc/system.py
@@ -1,7 +1,7 @@
 import errno
 import logging
 import os
-import shutil
+import speedcopy
 
 from dvc.compat import fspath
 from dvc.exceptions import DvcException
@@ -18,7 +18,7 @@ def is_unix():
     @staticmethod
     def copy(src, dest):
         src, dest = fspath(src), fspath(dest)
-        return shutil.copyfile(src, dest)
+        return speedcopy.copyfile(src, dest)
 
     @staticmethod
     def hardlink(source, link_name):
diff --git a/setup.py b/setup.py
index f8c4fda597..4aaf0b7b1b 100644
--- a/setup.py
+++ b/setup.py
@@ -75,6 +75,7 @@ def run(self):
     "win-unicode-console>=0.5; sys_platform == 'win32'",
     "pywin32>=225; sys_platform == 'win32'",
     "networkx>=2.1,<2.4",
+    "speedcopy>=2",
 ]
 
 

From 811fc5317c4e18f402aa0631a44faabb38eea576 Mon Sep 17 00:00:00 2001
From: rxxg <robbiexgibson@yahoo.com>
Date: Thu, 9 Jan 2020 14:25:01 +0100
Subject: [PATCH 2/5] Use speedcopy module with bugfix

---
 setup.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 4aaf0b7b1b..5008f9ce38 100644
--- a/setup.py
+++ b/setup.py
@@ -75,7 +75,7 @@ def run(self):
     "win-unicode-console>=0.5; sys_platform == 'win32'",
     "pywin32>=225; sys_platform == 'win32'",
     "networkx>=2.1,<2.4",
-    "speedcopy>=2",
+    "speedcopy @ git+https://github.com/rxxg/speedcopy@5",
 ]
 
 

From 674541f9225ee96acd237bfb8791ace3738ffa49 Mon Sep 17 00:00:00 2001
From: rxxg <robbiexgibson@yahoo.com>
Date: Thu, 9 Jan 2020 17:57:15 +0100
Subject: [PATCH 3/5] Use pyfastcopy for non-Windows systems using Python < 3.8

---
 dvc/system.py | 19 +++++++++++++++----
 setup.py      |  1 +
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/dvc/system.py b/dvc/system.py
index a6fc77bf4a..7a6a702502 100644
--- a/dvc/system.py
+++ b/dvc/system.py
@@ -1,7 +1,7 @@
 import errno
 import logging
 import os
-import speedcopy
+import platform
 
 from dvc.compat import fspath
 from dvc.exceptions import DvcException
@@ -18,7 +18,20 @@ def is_unix():
     @staticmethod
     def copy(src, dest):
         src, dest = fspath(src), fspath(dest)
-        return speedcopy.copyfile(src, dest)
+        system = platform.system()
+        if system == "Windows":
+            import speedcopy
+
+            return speedcopy.copyfile(src, dest)
+        else:
+            import shutil
+            import sys
+
+            if sys.version_info < (3, 8):
+                # Importing the module monkey-patches shutil.copyfile
+                import pyfastcopy  # noqa: F401
+
+            return shutil.copyfile(src, dest)
 
     @staticmethod
     def hardlink(source, link_name):
@@ -90,8 +103,6 @@ def _reflink_linux(src, dst):
 
     @staticmethod
     def reflink(source, link_name):
-        import platform
-
         source, link_name = fspath(source), fspath(link_name)
 
         system = platform.system()
diff --git a/setup.py b/setup.py
index 5008f9ce38..13792fbc44 100644
--- a/setup.py
+++ b/setup.py
@@ -76,6 +76,7 @@ def run(self):
     "pywin32>=225; sys_platform == 'win32'",
     "networkx>=2.1,<2.4",
     "speedcopy @ git+https://github.com/rxxg/speedcopy@5",
+    "pyfastcopy>=1.0.3",
 ]
 
 

From 8fca139246cc15e7ca0ce772d9e76ca8862b8e56 Mon Sep 17 00:00:00 2001
From: rxxg <robbiexgibson@yahoo.com>
Date: Wed, 15 Jan 2020 12:50:43 +0100
Subject: [PATCH 4/5] Use released version of speedcopy library

---
 setup.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 13792fbc44..a3fe8421f6 100644
--- a/setup.py
+++ b/setup.py
@@ -75,7 +75,7 @@ def run(self):
     "win-unicode-console>=0.5; sys_platform == 'win32'",
     "pywin32>=225; sys_platform == 'win32'",
     "networkx>=2.1,<2.4",
-    "speedcopy @ git+https://github.com/rxxg/speedcopy@5",
+    "speedcopy>=2.0.1",
     "pyfastcopy>=1.0.3",
 ]
 

From 083a630b44287acc323602d7060ea676db086dad Mon Sep 17 00:00:00 2001
From: rxxg <robbiexgibson@yahoo.com>
Date: Thu, 16 Jan 2020 17:08:07 +0100
Subject: [PATCH 5/5] Fallback to standard Python code in case of missing
 packages

---
 dvc/system.py | 34 +++++++++++++++++++---------------
 1 file changed, 19 insertions(+), 15 deletions(-)

diff --git a/dvc/system.py b/dvc/system.py
index 7a6a702502..c300daac57 100644
--- a/dvc/system.py
+++ b/dvc/system.py
@@ -2,13 +2,30 @@
 import logging
 import os
 import platform
+import shutil
 
 from dvc.compat import fspath
 from dvc.exceptions import DvcException
 
-
 logger = logging.getLogger(__name__)
 
+if platform.system() == "Windows":
+    try:
+        import speedcopy
+
+        speedcopy.patch_copyfile()
+    except ImportError:
+        pass
+else:
+    import sys
+
+    if sys.version_info < (3, 8):
+        try:
+            # Importing the module monkey-patches shutil.copyfile
+            import pyfastcopy  # noqa: F401
+        except ImportError:
+            pass
+
 
 class System(object):
     @staticmethod
@@ -18,20 +35,7 @@ def is_unix():
     @staticmethod
     def copy(src, dest):
         src, dest = fspath(src), fspath(dest)
-        system = platform.system()
-        if system == "Windows":
-            import speedcopy
-
-            return speedcopy.copyfile(src, dest)
-        else:
-            import shutil
-            import sys
-
-            if sys.version_info < (3, 8):
-                # Importing the module monkey-patches shutil.copyfile
-                import pyfastcopy  # noqa: F401
-
-            return shutil.copyfile(src, dest)
+        return shutil.copyfile(src, dest)
 
     @staticmethod
     def hardlink(source, link_name):