Upgrade packaging to 14.3

pkg_resources.py

@@ -77,9 +77,11 @@ except ImportError:
 
 try:
     import packaging.version
+    import packaging.specifiers
 except ImportError:
     # fallback to vendored version
     import setuptools._vendor.packaging.version
+    import setuptools._vendor.packaging.specifiers
     packaging = setuptools._vendor.packaging
 
 # For compatibility, expose packaging.version.parse as parse_version
@@ -2678,7 +2680,7 @@ class Requirement:
         """DO NOT CALL THIS UNDOCUMENTED METHOD; use Requirement.parse()!"""
         self.unsafe_name, project_name = project_name, safe_name(project_name)
         self.project_name, self.key = project_name, project_name.lower()
-        self.specifier = packaging.version.Specifier(
+        self.specifier = packaging.specifiers.SpecifierSet(
             ",".join(["".join([x, y]) for x, y in specs])
         )
         self.specs = specs

setuptools/_vendor/packaging/__about__.py

@@ -22,7 +22,7 @@ __title__ = "packaging"
 __summary__ = "Core utilities for Python packages"
 __uri__ = "https://github.com/pypa/packaging"
 
-__version__ = "14.2"
+__version__ = "14.3"
 
 __author__ = "Donald Stufft"
 __email__ = "donald@stufft.io"

setuptools/_vendor/packaging/_compat.py

@@ -25,3 +25,16 @@ if PY3:
     string_types = str,
 else:
     string_types = basestring,
+
+
+def with_metaclass(meta, *bases):
+    """
+    Create a base class with a metaclass.
+    """
+    # This requires a bit of explanation: the basic idea is to make a dummy
+    # metaclass for one level of class instantiation that replaces itself with
+    # the actual metaclass.
+    class metaclass(meta):
+        def __new__(cls, name, this_bases, d):
+            return meta(name, bases, d)
+    return type.__new__(metaclass, 'temporary_class', (), {})

setuptools/_vendor/vendored.txt

-packaging==14.2
+packaging==14.3