extra_where = 'NOT catalogue_tag.category = "set"'
related_tags = models.Tag.objects.related_for_model(tags, model, counts=True, extra={'where': [extra_where]})
categories = split_tags(related_tags)
extra_where = 'NOT catalogue_tag.category = "set"'
related_tags = models.Tag.objects.related_for_model(tags, model, counts=True, extra={'where': [extra_where]})
categories = split_tags(related_tags)