Failing to serialize NumericRange with CheckConstraint on IntegerRangeField

[Arran]

I am trying to create a PostgreSQL check constraint on an IntegerRangeField, but when I run makemigrations I get the following error:

ValueError: Cannot serialize: Range(1, 10000, '[)')
There are some values Django cannot serialize into migration files.

Here's a simple example of my model which raises the error:

from django.contrib.postgres.fields import IntegerRangeField
from django.db.backends.postgresql.psycopg_any import NumericRange
from django.db import models
from django.db.models.constraints import CheckConstraint
from django.db.models.expressions import Q


class MyModel(models.Model):
    price_range = IntegerRangeField()

    class Meta:
        constraints = [
            CheckConstraint(
                check=Q(price_range__contained_by=NumericRange(1, 10000)),
                name="price_range_gt_1_and_lte_10000",
            )
        ]

Judging by the following ticket this should work, so any help would be welcome:

https://code.djangoproject.com/ticket/30258

Thanks!

[Mariusz Felisiak]

You need to add django.contrib.postgres to the INSTALLED_APPS this will register PostgreSQL-specific serializers.