I am trying to get a simple checkbox meta attached to a post. I am using this code:

<?php 
	
/*
Title: Publish (Clearance)
Post Type: post
Capability: administrator
*/
	
piklist('field', array(
  'type' => 'checkbox'
  ,'scope' => 'taxonomy'
  ,'field' => 'post_clearance'
  ,'label' => 'Cleared'
  ,'description' => 'Administrators & Editors can clear publication for edition.'
  ,'choices' => array(
	  'cleared' => 'Cleared'
     )
));
	?>

Two things happen. One is that the meta box does successfully appear, but when I check it and hit update, it doesn’t save it. (Using version 0.9.9.6 beta)

Essentially using this simple one-option check box to act as a simple boolean function for a pre_get_post call through functions.php. This is what I have, but its not yielding any results of at the moment cause of the issue above.

function homepage_sticky_date_normalized( $query ) {
	
     if (is_home() || is_archive() && $query->is_main_query())  
      	$query->set('ignore_sticky_posts', true); // don't stack sticky posts 
        $query->set( 'meta_key', 'clearance' );
        $query->set( 'meta_value', true );
	 // $query->set('post__not_in', $excludes);
        // $query->set('post__not_in', get_option('sticky_posts')); 
        }
        
add_action( 'pre_get_posts', 'homepage_sticky_date_normalized' );

These additional query-sets kill the listing of my posts in the backend.

   $query->set( 'meta_key', 'clearance' );
        $query->set( 'meta_value', true );

So three problems. :-/