bzr apache conf

 <Directory />
    Options FollowSymLinks
    AllowOverride All
    Options -Indexes
  </Directory>

    Alias /code /var/bzr/repo/

     WSGIScriptAliasMatch ^/code/.*/\.bzr/smart$ /var/bzr/repo/bzr_serve.wsgi

     #The three next lines allow regular GETs to work too
     RewriteEngine On
     RewriteCond %{REQUEST_URI} !^/code/.*/\.bzr/smart$
     RewriteRule ^/code/(.*/\.bzr/.*)$ /var/bzr/repo/$1 [L]

    <Directory /var/bzr/repo>
     WSGIApplicationGroup %{GLOBAL}
    </Directory>

    <Location /code>
     AuthType Basic
     AuthName "Trac Source Access"
     AuthUserFile /path/to/trac/.htpasswd
    <LimitExcept GET>
        Require valid-user
    </LimitExcept>
    </Location>

bzr wsgi

from bzrlib.transport.http import wsgi

def application(environ, start_response):
    app = wsgi.make_app(
        root="/var/bzr/repo/",
        prefix="/code",
        readonly=False,
        enable_logging=False)
    return app(environ, start_response)