I just wanted to point out a very important change to content_copy.module that makes it much more fasible to create CCK field programatically as part of an install profile. As of last week, the DRUPAL-5 CVS version of content_copy.module no longer ends content_copy_import_form_submit() with a drupal_goto().
Previously, if you attemted to import a CCK node-type using drupal_execute(), your script would redirect to an admin page, which is problematic during an install profile as it short-cirtuits the process. This is no longer the case.
You can now run code similar to the following:
<?php
include_once './'. drupal_get_path('module', 'node') .'/content_types.inc';
include_once('./'. drupal_get_path('module', 'content') .'/content_admin.inc');
$values = array();
$values['type_name'] ='<create>';
$values['macro'] = /** YOUR CCK EXPORT DUMP HERE **/
drupal_execute("content_copy_import_form", $values);
?>And continue with your install script. Happy profiling!