appengine-sandbox-pythonpath.patch

--- sandbox.py.orig	2014-09-23 13:26:01.151339089 -0700
+++ sandbox.py	2014-09-23 13:28:04.452163114 -0700
@@ -21,6 +21,7 @@
 import imp
 import os
 import re
+import site
 import sys
 import traceback
 import types
@@ -209,6 +210,17 @@
   sys.stdin = devnull
   sys.stdout = sys.stderr
 
+  python_path = _get_env(config.environ, 'PYTHONPATH')
+  site_index = 1
+  if python_path:
+    sys.path[site_index:site_index] = [os.path.realpath(p) for p in python_path.split(os.pathsep)]
+    site_index += len(python_path)
+
+  user_base = _get_env(config.environ, 'PYTHONUSERBASE')
+  if user_base:
+    site_dir = os.path.join(user_base, 'lib', 'python' + sys.version[:3], 'site-packages')
+    _insert_site_dir(site_index, site_dir)
+
 
 def _find_shared_object_c_module():
   for module_name in ['_sqlite3', '_multiprocessing', '_ctypes', 'bz2']:
@@ -310,6 +322,34 @@
   return library_dirs
 
 
+def _get_env(environ, key):
+  """Get a variable from the runtime environment.
+
+  Args:
+    environ: A repeated Config.Environ containing the user defined environment.
+
+  Returns:
+    Matching environment variable or None.
+  """
+  for var in environ:
+    if var.key == key:
+      return var.value
+
+def _insert_site_dir(index, site_dir):
+  """Prepend site dir to sys.path.
+
+  Args:
+    site_dir: a site dir path relative to the application directory.
+  """
+  # copy sys.path
+  sys_path = sys.path[:]
+  # application root
+  sys.path = sys_path[:index]
+  # site defined search paths
+  site.addsitedir(site_dir)
+  # SDK defined search paths
+  sys.path.extend(sys_path[index:])
+
 class BaseImportHook(object):
   """A base class implementing common import hook functionality.
 

appengine_config.py

import site
import os.path
import sys

def _insert_site_dir(index, site_dir):
  """Prepend site dir to sys.path.

  Args:
    site_dir: a site dir path relative to the application directory.
  """
  # copy sys.path
  sys_path = sys.path[:]
  # application root
  sys.path = sys_path[:index]
  # site defined search paths
  site.addsitedir(site_dir)
  # SDK defined search paths
  sys.path.extend(sys_path[index:])

user_base = os.environ.get('PYTHONUSERBASE', None)
if user_base:
  site_dir = os.path.join(user_base, 'lib', 'python' + sys.version[:3], 'site-packages')
  _insert_site_dir(1, site_dir)

vendor.py

"""Dependencies vendoring helpers"""

import site
import os.path
import sys

def add_virtualenv(path):
  """Insert virtualenv site dir in sys.path[1].

  Args:
    path: relative path to a virtualenv
  """
  site_dir = os.path.join(path, 'lib', 'python' + sys.version[:3], 'site-packages')
  add(site_dir)

def add(path):
  """Insert site dir in sys.path[1].

  Args:
    path: relative path to site dir.
  """
  # copy sys.path
  sys_path = sys.path[:]
  # application root
  sys.path = sys_path[:1]
  # site defined search paths
  site.addsitedir(path)
  # SDK defined search paths
  sys.path.extend(sys_path[1:])

vendor_test.py

"""Tests for the vendor module."""
import os.path
import sys
import unittest

import vendor

class VendorTestCase(unittest.TestCase):
  """Tests for the vendoring virtualenv and paths."""

  def setUp(self):
    self.orig_sys_path = sys.path

  def tearDown(self):
    sys.path = self.orig_sys_path

  def isFooBar(self):
    import foo
    return foo.is_bar

  def isBarBar(self):
    import bar
    return bar.is_bar

  def testAddVirtualenv(self):
    self.assertRaises(ImportError, self.isFooBar)
    vendor.add_virtualenv(os.path.join(os.path.dirname(__file__), 'testdata', 'venv'))
    self.assertEquals(False, self.isFooBar())

  def testAddSite(self):
    self.assertRaises(ImportError, self.isFooBar)
    vendor.add(os.path.join(os.path.dirname(__file__), 'testdata', 'site'))
    self.assertEquals(True, self.isBarBar())

if __name__ == '__main__':
  unittest.main()