pyramid_jinja2 doesn't easily work with appengine; here's the changes needed

gistfile1.diff

commit ae9c6a6dc96897d6d82db20bfca68df813f5dabb
Author: Rob Berry
Date:   Thu Oct 10 08:00:02 2013 +0100

    Add pyramid_jinja2

diff --git a/buildout.cfg b/buildout.cfg
index 2510ba1..367938f 100644
--- a/buildout.cfg
+++ b/buildout.cfg
@@ -47,6 +47,7 @@ packages=
     prettyexc
     deform
+    pyramid-jinja2
 
 server-script = dev_appserver
 zip-packages = False
diff --git a/src/app.yaml b/src/app.yaml
index 6f60390..f4ace9c 100644
--- a/src/app.yaml
+++ b/src/app.yaml
@@ -27,4 +27,6 @@ libraries:
   version: latest
 - name: ssl
   version: latest
+- name: jinja2
+  version: latest
 
diff --git a/src/development.ini b/src/development.ini
index 8ed3f66..8290ab5 100644
--- a/src/development.ini
+++ b/src/development.ini
@@ -22,6 +22,11 @@ project3.apns_sandbox = true
 project3.apns_cert = apns-dev.pem
 project3.bucket = some-bucket-name
 
+# cannot write to the filesystem in appengine
+jinja2.bytecode_caching = false
+jinja2.directories = project3:templates
+
+
 # By default, the toolbar only appears for clients from IP addresses
 # '127.0.0.1' and '::1'.
 # debugtoolbar.hosts = 127.0.0.1 ::1
diff --git a/src/project3/__init__.py b/src/project3/__init__.py
index e759005..754cb2c 100644
--- a/src/project3/__init__.py
+++ b/src/project3/__init__.py
@@ -1,6 +1,7 @@
 from pyramid.config import Configurator
 from pyramid.security import unauthenticated_userid
 from pyramid.authorization import ACLAuthorizationPolicy
+from pyramid_jinja2 import renderer_factory
 from sqlalchemy import engine_from_config
 from .viewmapper import ViewMapper
 from .security import sessionfinder
@@ -58,6 +59,10 @@ def main(global_config, **settings):
     config = Configurator(settings=settings, default_view_mapper=ViewMapper,
                           root_factory='project3.models.RootFactory')
 
+    # jinja2 for html templates
+    config.include('pyramid_jinja2')
+    config.add_renderer('.html', renderer_factory)
+
     # auth (both kinds)
     config.set_authentication_policy(authn_policy)
     config.set_authorization_policy(authz_policy)
@@ -97,6 +102,19 @@ def application(*args):
     google.__path__.append(os.path.join(root, 'google'))
     sys.path.insert(0, root)
 
+    class main(object):
+        """appengine imports don't work like normal python imports
+
+        long story short; this lets us use pyramid_jinja2
+        (http://stackoverflow.com/a/18074353)"""
+
+        def __init__(self, name):
+            sys.modules[name] = self
+
+        def __getattr__(self, name):
+            return globals()[name]
+    main('__main__')
+
     root = os.path.dirname(os.path.dirname(__file__))
     config_file = 'production.ini'
     if os.environ.get('SERVER_SOFTWARE', '').startswith('Development'):
diff --git a/src/setup.py b/src/setup.py
index 78898c7..e97ace0 100644
--- a/src/setup.py
+++ b/src/setup.py
@@ -31,6 +31,7 @@ requires = [
     'deform',
+    'pyramid_jinja2',
 ]
 
 setup(name='project3',