tangentlabs/django-oscar — pull request #1324 by mexicat (2014-05-12 15:39:43+00:00)
Title: Added `group_pricing_policy` to `FixedRateTax`

Using a strategy derived from the `FixedRateTax` mixin breaks the default templates (which require a `group_pricing_policy` attribute). I basically copied the one from `NoTax` and added the tax calculation from `FixedRateTax.pricing_policy`.