ImportError in starlette integration when jinja2 isn't installed (starlette 1.0.0)

[craigds]

How do you use Sentry?

Self-hosted/on-premise

Version

2.55.0

Steps to Reproduce

After upgrading to starlette 1.0.0, we've started getting ImportErrors from sentry init.

pip freeze is gigantic but the relevant parts are:

• Python 3.10.12
• sentry-sdk==2.55.0
• starlette==1.0.0
• no jinja2

Expected Result

works nice and quiet like

Actual Result

...
  File "/app/thing/settings.py", line 924, in sentry_init_with_profiling
    return sentry_sdk.init(integrations=[])
  File "/venv/lib/python3.10/site-packages/sentry_sdk/_init_implementation.py", line 57, in _init
    client = sentry_sdk.Client(*args, **kwargs)
  File "/venv/lib/python3.10/site-packages/sentry_sdk/client.py", line 283, in __init__
    self._init_impl()
  File "/venv/lib/python3.10/site-packages/sentry_sdk/client.py", line 435, in _init_impl
    self.integrations = setup_integrations(
  File "/venv/lib/python3.10/site-packages/sentry_sdk/integrations/__init__.py", line 258, in setup_integrations
    type(integration).setup_once()
  File "/venv/lib/python3.10/site-packages/sentry_sdk/integrations/starlette.py", line 137, in setup_once
    patch_templates()
  File "/venv/lib/python3.10/site-packages/sentry_sdk/integrations/starlette.py", line 555, in patch_templates
    from starlette.templating import Jinja2Templates  # type: ignore
  File "/venv/lib/python3.10/site-packages/starlette/templating.py", line 28, in <module>
    raise ImportError("jinja2 must be installed to use Jinja2Templates") from _import_error
ImportError: jinja2 must be installed to use Jinja2Templates

[linear-code]

PY-2191

[sentrivana]

Thanks @craigds, taking a look.

[sentrivana]

We already have a fix for this on main, so it'll be out with the next release soon!