eddudley

For anyone else struggling with this, I found an answer. Put this in your theme’s functions.php

function customarchives_where( $x ) {
	return $x . " OR (post_type = 'post' AND post_status = 'private')";
}

if ( is_user_logged_in() ) {
    add_filter( 'getarchives_where', 'customarchives_where' );
}

If a user is logged in, the archives widget will now include private posts.

Comments from any wordpress pros as to whether this is the best way to do this are more than welcome!