Fix Python 3.12 CI failures (#971)

Author: chrisspalm

ci/install-deps.sh

@@ -9,3 +9,8 @@ pip install -e .
 pip install -r requirements-test.txt
 pip install git+https://github.com/dask/distributed@main
 pip install git+https://github.com/dask/dask@main
+# Re-pin k8s-crd-resolver compatible versions after other installs
+# may upgrade them:
+# - setuptools 82 removed pkg_resources, needed by openapi-spec-validator<0.5.0
+# - openapi-spec-validator<0.5.0 needs jsonschema<4.18 for _legacy_validators
+pip install "setuptools<81" "jsonschema==4.17.3" "openapi-spec-validator<0.5.0"

dask_kubernetes/operator/controller/controller.py

@@ -7,14 +7,14 @@
 from collections import defaultdict
 from contextlib import suppress
 from datetime import datetime
+from importlib.metadata import entry_points
 from typing import TYPE_CHECKING, Any, Final
 from uuid import uuid4
 
 import aiohttp
 import dask.config
 import kopf
 import kr8s
-import pkg_resources
 from distributed.core import clean_exception, rpc
 from distributed.protocol.pickle import dumps
 from kr8s.asyncio.objects import Deployment, Pod, Service
@@ -47,7 +47,7 @@
 
 # Load operator plugins from other packages
 PLUGINS: list[Any] = []
-for ep in pkg_resources.iter_entry_points(group="dask_operator_plugin"):
+for ep in entry_points(group="dask_operator_plugin"):
     with suppress(AttributeError, ImportError):
         PLUGINS.append(ep.load())