commit aefacbb76661520415a1c35028f2984e70cfe0bf
Author: Slavek Kabrda <bkabrda@redhat.com>
Date:   Fri Nov 29 13:24:58 2013 +0100

    Allow stripping given prefix from wheel RECORD files

diff --git a/pip/commands/install.py b/pip/commands/install.py
index 1693d01..0287c06 100644
--- a/pip/commands/install.py
+++ b/pip/commands/install.py
@@ -137,6 +137,14 @@ class InstallCommand(Command):
                  "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',
@@ -345,6 +353,7 @@ class InstallCommand(Command):
                             global_options,
                             root=options.root_path,
                             prefix=options.prefix_path,
+                            strip_file_prefix=options.strip_file_prefix,
                         )
                         reqs = sorted(
                             requirement_set.successfully_installed,

diff --git a/pip/req/req_install.py b/pip/req/req_install.py
index 3ae306d..c171130 100644
--- a/pip/req/req_install.py
+++ b/pip/req/req_install.py
@@ -615,17 +615,21 @@ exec(compile(open(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))
         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)
             return
         if self.is_wheel:
             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
 
@@ -844,15 +848,16 @@ exec(compile(open(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))
     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,
             home=self.target_dir,
             root=root,
             prefix=prefix,
             pycompile=self.pycompile,
             isolated=self.isolated,
+            strip_file_prefix=strip_file_prefix,
         )
 
     def get_dist(self):
diff --git a/pip/wheel.py b/pip/wheel.py
index fa3e270..3a366d0 100644
--- a/pip/wheel.py
+++ b/pip/wheel.py
@@ -136,7 +136,7 @@ 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:
@@ -357,6 +357,8 @@ if __name__ == '__main__':
                 writer.writerow(row)
             for f in generated:
                 h, l = rehash(f)
+                if strip_file_prefix and f.startswith(strip_file_prefix):
+                    f = os.path.join(os.sep, os.path.relpath(f, strip_file_prefix))
                 writer.writerow((f, h, l))
             for f in installed:
                 writer.writerow((installed[f], '', ''))