Wordpress setup not fully supported (wp-config.php required)

[kevinoid]

As noted in #3 (comment) wp-config.php must be created manually during installation if it does not already exist. This is due to how require_wp_db in wp-includes/load.php loads wp-content/db.php only when it is first called. However, the logic in wp-admin/setup-config.php assumes it can unset $wpdb then call require_wp_db to reinitialize the database connection. This does not work for pg4wp since it is not reloaded and thus does not replace the $wpdb value with its own.

Although pg4wp could work around this with some monkey-patching, the better solution would be to raise the issue with the Wordpress developers for a proper fix in Wordpress core.