Move monkeypatching in package module into monkey.

setuptools/__init__.py

 """Extensions to the 'distutils' for large or complex distributions"""
 
 import os
-import sys
 import functools
 import distutils.core
 import distutils.filelist
@@ -13,8 +12,8 @@ from setuptools.extern.six.moves import filterfalse, map
 import setuptools.version
 from setuptools.extension import Extension
 from setuptools.dist import Distribution, Feature
-from setuptools.monkey import _get_unpatched
 from setuptools.depends import Require
+from . import monkey
 
 __all__ = [
     'setup', 'Distribution', 'Feature', 'Command', 'Extension', 'Require',
@@ -122,7 +121,7 @@ find_packages = PackageFinder.find
 
 setup = distutils.core.setup
 
-_Command = _get_unpatched(distutils.core.Command)
+_Command = monkey._get_unpatched(distutils.core.Command)
 
 
 class Command(_Command):
@@ -144,10 +143,6 @@ class Command(_Command):
         return cmd
 
 
-# we can't patch distutils.cmd, alas
-distutils.core.Command = Command
-
-
 def _find_all_simple(path):
     """
     Find all files under 'path'
@@ -172,31 +167,4 @@ def findall(dir=os.curdir):
     return list(files)
 
 
-has_issue_12885 = (
-    sys.version_info < (3, 4, 6)
-    or
-    (3, 5) < sys.version_info <= (3, 5, 3)
-    or
-    (3, 6) < sys.version_info
-)
-
-if has_issue_12885:
-    # fix findall bug in distutils (http://bugs.python.org/issue12885)
-    distutils.filelist.findall = findall
-
-
-needs_warehouse = (
-    sys.version_info < (2, 7, 13)
-    or
-    (3, 0) < sys.version_info < (3, 3, 7)
-    or
-    (3, 4) < sys.version_info < (3, 4, 6)
-    or
-    (3, 5) < sys.version_info <= (3, 5, 3)
-    or
-    (3, 6) < sys.version_info
-)
-
-if needs_warehouse:
-    warehouse = 'https://upload.pypi.org/legacy/'
-    distutils.config.PyPIRCCommand.DEFAULT_REPOSITORY = warehouse
+monkey.patch_all()

setuptools/monkey.py

@@ -2,6 +2,11 @@
 Monkey patching of distutils.
 """
 
+import sys
+import distutils.filelist
+
+import setuptools
+
 
 __all__ = []
 "everything is private"
@@ -20,3 +25,36 @@ def _get_unpatched(cls):
             "distutils has already been patched by %r" % cls
         )
     return cls
+
+
+def patch_all():
+    # we can't patch distutils.cmd, alas
+    distutils.core.Command = setuptools.Command
+
+    has_issue_12885 = (
+        sys.version_info < (3, 4, 6)
+        or
+        (3, 5) < sys.version_info <= (3, 5, 3)
+        or
+        (3, 6) < sys.version_info
+    )
+
+    if has_issue_12885:
+        # fix findall bug in distutils (http://bugs.python.org/issue12885)
+        distutils.filelist.findall = setuptools.findall
+
+    needs_warehouse = (
+        sys.version_info < (2, 7, 13)
+        or
+        (3, 0) < sys.version_info < (3, 3, 7)
+        or
+        (3, 4) < sys.version_info < (3, 4, 6)
+        or
+        (3, 5) < sys.version_info <= (3, 5, 3)
+        or
+        (3, 6) < sys.version_info
+    )
+
+    if needs_warehouse:
+        warehouse = 'https://upload.pypi.org/legacy/'
+        distutils.config.PyPIRCCommand.DEFAULT_REPOSITORY = warehouse