diff -up pip-9.0.1/pip/commands/install.py.orig pip-9.0.1/pip/commands/install.py

--- pip-9.0.1/pip/commands/install.py.orig	2016-11-06 11:49:45.000000000 -0700

+++ pip-9.0.1/pip/commands/install.py	2016-11-16 16:20:48.638906543 -0700

@@ -151,6 +151,14 @@ class InstallCommand(RequirementCommand)

                  "directory.")

         cmd_opts.add_option(

+            '--strip-file-prefix',

+            dest='strip_file_prefix',

+            metavar='prefix',

+            default=None,

+            help="Strip given prefix from script paths in wheel RECORD."

+        )

+

+        cmd_opts.add_option(

             '--prefix',

             dest='prefix_path',

             metavar='dir',

@@ -340,6 +348,7 @@ class InstallCommand(RequirementCommand)

                             global_options,

                             root=options.root_path,

                             prefix=options.prefix_path,

+                            strip_file_prefix=options.strip_file_prefix,

                         )

                         possible_lib_locations = get_lib_location_guesses(

diff -up pip-9.0.1/pip/req/req_install.py.orig pip-9.0.1/pip/req/req_install.py

--- pip-9.0.1/pip/req/req_install.py.orig	2016-11-06 11:49:45.000000000 -0700

+++ pip-9.0.1/pip/req/req_install.py	2016-11-16 16:19:24.848336960 -0700

@@ -838,8 +838,7 @@ class InstallRequirement(object):

         else:

             return True

-    def install(self, install_options, global_options=[], root=None,

-                prefix=None):

+    def install(self, install_options, global_options=[], root=None, prefix=None, strip_file_prefix=None):

         if self.editable:

             self.install_editable(

                 install_options, global_options, prefix=prefix)

@@ -848,7 +847,12 @@ class InstallRequirement(object):

             version = pip.wheel.wheel_version(self.source_dir)

             pip.wheel.check_compatibility(version, self.name)

-            self.move_wheel_files(self.source_dir, root=root, prefix=prefix)

+            self.move_wheel_files(

+                self.source_dir,

+                root=root,

+                prefix=prefix,

+                strip_file_prefix=strip_file_prefix

+            )

             self.install_succeeded = True

             return

@@ -1053,7 +1057,7 @@ class InstallRequirement(object):

     def is_wheel(self):

         return self.link and self.link.is_wheel

-    def move_wheel_files(self, wheeldir, root=None, prefix=None):

+    def move_wheel_files(self, wheeldir, root=None, prefix=None, strip_file_prefix=None):

         move_wheel_files(

             self.name, self.req, wheeldir,

             user=self.use_user_site,

@@ -1062,6 +1066,7 @@ class InstallRequirement(object):

             prefix=prefix,

             pycompile=self.pycompile,

             isolated=self.isolated,

+            strip_file_prefix=strip_file_prefix,

         )

     def get_dist(self):

diff -up pip-9.0.1/pip/wheel.py.orig pip-9.0.1/pip/wheel.py

--- pip-9.0.1/pip/wheel.py.orig	2016-11-06 11:49:45.000000000 -0700

+++ pip-9.0.1/pip/wheel.py	2016-11-16 16:19:24.848336960 -0700

@@ -238,7 +238,7 @@ def get_entrypoints(filename):

 def move_wheel_files(name, req, wheeldir, user=False, home=None, root=None,

-                     pycompile=True, scheme=None, isolated=False, prefix=None):

+                     pycompile=True, scheme=None, isolated=False, prefix=None, strip_file_prefix=None):

     """Install a wheel"""

     if not scheme:

@@ -521,7 +521,11 @@ if __name__ == '__main__':

                 writer.writerow(row)

             for f in generated:

                 h, l = rehash(f)

-                writer.writerow((normpath(f, lib_dir), h, l))

+                final_path = normpath(f, lib_dir)

+                if strip_file_prefix and final_path.startswith(strip_file_prefix):

+                    final_path = os.path.join(os.sep,

+                            os.path.relpath(final_path, strip_file_prefix))

+                writer.writerow((final_path, h, l))

             for f in installed:

                 writer.writerow((installed[f], '', ''))

     shutil.move(temp_record, record)