Fix #1319 - Allow use of Zip64 extension

CHANGES.txt

@@ -48,6 +48,9 @@
 * Fixed :issue:`1680`. Attempt to locate system TLS certificates to use instead
   of the included CA Bundle if possible. (:pull:`1866`)
 
+* Fixed :issue:`1319`. Allow use of Zip64 extension in Wheels and other zip
+  files. (:pull:`1868`)
+
 
 **1.5.7**
 

pip/req/req_install.py

@@ -680,7 +680,10 @@ exec(compile(
                 )
                 shutil.move(archive_path, dest_file)
         if create_archive:
-            zip = zipfile.ZipFile(archive_path, 'w', zipfile.ZIP_DEFLATED)
+            zip = zipfile.ZipFile(
+                archive_path, 'w', zipfile.ZIP_DEFLATED,
+                allowZip64=True
+            )
             dir = os.path.normcase(os.path.abspath(self.source_dir))
             for dirpath, dirnames, filenames in os.walk(dir):
                 if 'pip-egg-info' in dirnames:

pip/util.py

@@ -501,7 +501,7 @@ def unzip_file(filename, location, flatten=True):
         os.makedirs(location)
     zipfp = open(filename, 'rb')
     try:
-        zip = zipfile.ZipFile(zipfp)
+        zip = zipfile.ZipFile(zipfp, allowZip64=True)
         leading = has_leading_dir(zip.namelist()) and flatten
         for info in zip.infolist():
             name = info.filename