APIStack: Reusing same Bottle instance

[romainptit]

Trying to add extra filter to the bottle router:

app = udon.wsgi.APIStack(prefix="/api")
app.app.router.add_filter("uuid", uuid_filter)
app.install_module("my_module")

But the bottle instance is overridden at each call to app.install_module so cannot use the new uuid filter in my_module.

Is there a reason for creating a new instance of bottle here:

udon/udon/wsgi.py

Line 57 in 0b61167

app = stack.app_factory()

Instead of doing:

app = stack.app

Or is there a better way for customizing the APIStack router ?