Automatic dependecy check for module dependecies

Yesterday I made a feature that includes an Input format. I used the Exportables and Input Formats modules to make this easy.

But when I tried the new features module on the test site I was treated with a bunch of PHP errors. It turned out that I have only copied the Input Formats module to the test site, but not the Exportables.

The Features update happily enabled Input Formats and since it is dependent on Exportables, the test site crashed.

I then tried to manually disable Input Format, changing its status to 0 in the system table. The site came back, but when looking at the Feature/Manage page, this features module got stuck in State Rebuilding. When clicking on it it said Exportables and Input Formats was disabled.

After dropping all tables and reinstalling Drupal, the feature module installed and did its thing just fine when all modules where available in sites/all/modules.

One thing I noticed when I created the feature was that it only automatically detected Input Format as dependency. It didn't manage to find that Exportables was a dependency for Input Format. This is probably why it happily enabled Input Formats.

This was done with Drupal 6.19, Features 1.0, Exportables 1.0 beta 1 and Input Format 1.0 beta 6.