Fix distutils error and declare packaging dep

Author: jobselko

pulp_python/tests/functional/api/test_full_mirror.py

@@ -32,7 +32,7 @@ def test_pull_through_install(
     # Perform pull-through install
     host = urlsplit(distro.base_url).hostname
     url = f"{distro.base_url}simple/"
-    cmd = ("pip", "install", "--trusted-host", host, "-i", url, PACKAGE)
+    cmd = ("pip", "install", "--no-deps", "--trusted-host", host, "-i", url, PACKAGE)
     subprocess.run(cmd, check=True)
 
     stdout = subprocess.run(("pip", "list"), capture_output=True).stdout.decode("utf-8")

pyproject.toml

@@ -27,6 +27,7 @@ classifiers=[
 requires-python = ">=3.11"
 dependencies = [
   "pulpcore>=3.105.0,<3.130",
+  "packaging>=21.0,<27",  # 21.0 removed distutils usage (removed in Python 3.12)
   "pkginfo>=1.12.0,<1.13.0",
   "bandersnatch>=6.6.0,<6.7",
   "pypi-simple>=1.8.0,<2.0",