Overriding sort order for a specific autopage

[alexjago]

I've got auto-pages set up for categories.

For some of my categories it makes sense to do oldest-first. However, another category is for events, which it makes sense to do newest-first.

Since they're auto pages, I don't have any front matter to specify. Putting things under the defaults key just gives me a heap of warnings.

I'm guessing this is just completely unsupported?