Hi all, 

I have already read the official document about how to write a LAVA server extension:
http://lava-server.readthedocs.org/en/latest/extending.html

We can find above example in lava-server source-tree,
and I want to install the example extension from lava-server source-tree directly,
my steps as below :

* instance name = testinstance

1. Get LAVA server source-tree
$ bzr branch lp:lava-server

2. Go to "demo" directory
$ cd lava-server/demo/

3. Active instance ven
$ . /srv/lava/instances/testinstance/bin/activate

4. Install the extension
$ ./setup.py develop

5. Patch setup.py and install again
refer: https://bugs.launchpad.net/lava-server/+bug/1116560
$ ./setup.py develop
output: http://paste.ubuntu.com/1615747/

6. Restart LAVA service
$  sudo restart lava-instance LAVA_INSTANCE=testinstance
output: lava-instance (testinstance) start/running

Everything look fine !
Finally go to Django "Site administration" ... ... nothing changed!
Screenshut:
https://picasaweb.google.com/113942492163843349547/201326?authuser=0&feat=directlink#5841757482343459138

Any idea, thank you !