Error in apache config during ec2 demo

[Jonathan Lange]

Running 'ec2 demo' shows the following errors:

Enabling site local-launchpad.
Run '/etc/init.d/apache2 reload' to activate new configuration!
/etc/init.d/apache2 restart
 * Restarting web server apache2
 * We failed to correctly shutdown apache, so we're now killing all running apache processes. This is almost certainly suboptimal, so please make sure your system is working as you'd expect now!
 ... waiting Warning: DocumentRoot [/var/tmp/ppa] does not exist
Warning: DocumentRoot [/var/tmp/archive] does not exist
Syntax error on line 157 of /etc/apache2/sites-enabled/local-launchpad:
Invalid command 'WSGIScriptAlias', perhaps misspelled or defined by a module not included in the server configuration
   ...fail!
make: *** [reload-apache] Error 1
Traceback (most recent call last):
  File "/home/jml/src/lp-dev-utils/ec2test/instance.py", line 473, in set_up_and_run
    retval = func(*args, **kw)
  File "/home/jml/src/lp-dev-utils/ec2test/builtins.py", line 545, in run_server
    runner.run_demo_server()
  File "/home/jml/src/lp-dev-utils/ec2test/testrunner.py", line 449, in run_demo_server
    p('cd /var/launchpad/test/; sudo make install')
  File "/home/jml/src/lp-dev-utils/ec2test/instance.py", line 698, in perform
    raise RuntimeError('Command failed: %s' % (cmd,))
RuntimeError: Command failed: cd /var/launchpad/test/; sudo make install

[Jonathan Lange (jml)]

I'm pretty sure that this is because libapache2-mod-wsgi is not installed.