Limit WP_get_archives by category?

I have two categories on a site – news which contains news posts and blog – which contains blog posts. Each page has a wp_get_archives in the sidebar. I’d like to limit the archive listing by category but after looking at the codex this does not seem possible. http://codex.wordpress.org/Function_Reference/wp_get_archives

<?php wp_get_archives('type=monthly&limit=12'); ?>

That code lists the archives for all the posts, but I want to list archives for just that category. Am I using the wrong function? Or is this not possible?

Basically this is possible, but somewhat messy. This function relies on direct SQL query to database, which you can change via getarchives_where and getarchives_join filters.