Allow post types to override `posts_per_archive_page`

[sebastian.pisula]

fixed

[swissspidy]

Just to be clear, you're suggesting that the "Posts per page" setting should be configurable per post type in register_post_type(). And I suppose you mean posts_per_page, since posts_per_archive_page is basically posts_per_page, but for archive pages.

As I mentioned ​on Slack, you can currently change the "Posts per page" option under Settings -> Reading. It's not dependant on any post types, though the pre_get_posts filter can be used to filter the option dynamically.