ddtrace==2.3.0 is incompatible with Python 3.13

[b-per]

Problem

The test dependency ddtrace==2.3.0 (pinned in dbt-bigquery/hatch.toml) fails to build on Python 3.13 due to Cython compilation errors:

Error compiling Cython file:
    if PyInt_Check(n):
       ^
ddtrace/internal/_encoding.pyx:119:7: undeclared name not builtin: PyInt_Check

PyInt_Check was removed in CPython 3.13 as part of the ongoing cleanup of legacy C API symbols. ddtrace==2.3.0 was released in November 2023, before Python 3.13 existed.

This prevents running hatch run unit-tests (or any hatch environment setup) on Python 3.13, which is now the default on many systems.

Affected packages

All adapter packages that pin ddtrace==2.3.0 in their hatch.toml:

• dbt-bigquery

(Other adapters may be affected too — I only checked dbt-bigquery.)

Workaround

Use Python 3.12 explicitly:

HATCH_PYTHON=python3.12 uvx hatch run unit-tests

Suggested fix

Upgrade ddtrace to a version that supports Python 3.13 (ddtrace 2.14.0+ added 3.13 support), or make it optional so unit tests can run without it.