Django templates not loading?

Had an annoying issue today after upgrading an installation of django to the trunk. All of a sudden, my admin interface would not load. I had errors stating that the template admin/login.html could not be loaded.

Now, django.contrib.admin was in settings.INSTALLED_APPS, and django.template.loaders.app_directories.Loader was in settings.TEMPLATE_LOADERS.

So, why was django throwing an exception? To find out, I stepped into a shell:

1 >>> from django.template.loader import find_template_loader
2 >>> loader = find_template_loader('django.template.loaders.app_directories.Loader')
3 >>> loader.load_template('admin/login.html')

This was where I realised something was wrong. I don’t get the error now (as I have fixed it), but it complained about being not allowed to open the file. As in a permissions error.

Looking up the location in a new shell, I was able to see that all of the files in the django.contrib.admin.templates directory were only able to be read by root. For some reason, python setup.py install had set the mode of these files to 0600, instead of the expected 0644. A quick sudo chmod -r ag+r templates (from inside the django.contrib.admin directory) fixed it.