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):
             help="Install everything relative to this alternate root 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(
             "--compile",
             action="store_true",
             dest="compile",
@@ -273,7 +281,11 @@ class InstallCommand(Command):
                 requirement_set.locate_files()
 
             if not options.no_install and not self.bundle:
-                requirement_set.install(install_options, global_options, root=options.root_path)
+                requirement_set.install(
+                    install_options,
+                    global_options,
+                    root=options.root_path,
+                    strip_file_prefix=options.strip_file_prefix)
                 installed = ' '.join([req.name for req in
                                       requirement_set.successfully_installed])
                 if installed:
diff --git a/pip/req.py b/pip/req.py
index 3ae306d..c171130 100644
--- a/pip/req.py
+++ b/pip/req.py
@@ -615,15 +615,19 @@ exec(compile(open(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))
         name = name.replace(os.path.sep, '/')
         return name
 
-    def install(self, install_options, global_options=(), root=None):
+    def install(self, install_options, global_options=(), root=None, strip_file_prefix=None):
         if self.editable:
             self.install_editable(install_options, global_options)
             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)
+            self.move_wheel_files(
+                self.source_dir,
+                root=root,
+                strip_file_prefix=strip_file_prefix
+            )
             self.install_succeeded = True
             return
 
@@ -844,13 +848,14 @@ exec(compile(open(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))
         self._bundle_build_dirs = bundle_build_dirs
         self._bundle_editable_dirs = bundle_editable_dirs
 
-    def move_wheel_files(self, wheeldir, root=None):
+    def move_wheel_files(self, wheeldir, root=None, strip_file_prefix=None):
         move_wheel_files(
             self.name, self.req, wheeldir,
             user=self.use_user_site,
             home=self.target_dir,
             root=root,
             pycompile=self.pycompile,
+            strip_file_prefix=strip_file_prefix,
         )
 
     @property
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):
+        pycompile=True, strip_file_prefix=None):
     """Install a wheel"""
 
     scheme = distutils_scheme(name, user=user, home=home, root=root)
@@ -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], '', ''))