migrate another pkg_resources usage (#22043)

src/python/pants/backend/openapi/sample/resources.py

@@ -1,8 +1,10 @@
 # Copyright 2022 Pants project contributors (see CONTRIBUTORS.md).
 # Licensed under the Apache License, Version 2.0 (see LICENSE).
 
-import importlib.resources as pkg_resources
+import importlib.resources
 
 from pants.backend.openapi import sample
 
-PETSTORE_SAMPLE_SPEC = pkg_resources.read_text(sample.__name__, "petstore_spec.yaml")
+PETSTORE_SAMPLE_SPEC = (
+    importlib.resources.files(sample.__name__).joinpath("petstore_spec.yaml").read_text()
+)

src/python/pants/backend/python/util_rules/pex.py

@@ -16,7 +16,7 @@
 
 import packaging.specifiers
 import packaging.version
-from pkg_resources import Requirement
+from packaging.requirements import Requirement
 
 from pants.backend.python.subsystems.setup import PythonSetup
 from pants.backend.python.target_types import (
@@ -1319,7 +1319,7 @@ class PexDistributionInfo:
     version: packaging.version.Version
     requires_python: packaging.specifiers.SpecifierSet | None
     # Note: These are parsed from metadata written by the pex tool, and are always
-    #   a valid pkg_resources.Requirement.
+    #   a valid packaging.requirements.Requirement.
     requires_dists: tuple[Requirement, ...]
 
 
@@ -1353,9 +1353,7 @@ def iter_dist_info() -> Iterator[PexDistributionInfo]:
                     if requires_python is not None
                     else None
                 ),
-                requires_dists=tuple(
-                    Requirement.parse(req) for req in sorted(info["requires_dists"])
-                ),
+                requires_dists=tuple(Requirement(req) for req in sorted(info["requires_dists"])),
             )
 
     return PexResolveInfo(sorted(iter_dist_info(), key=lambda dist: dist.project_name))

src/python/pants/backend/python/util_rules/pex_test.py

@@ -13,9 +13,9 @@
 
 import pytest
 import requests
+from packaging.requirements import Requirement
 from packaging.specifiers import SpecifierSet
 from packaging.version import Version
-from pkg_resources import Requirement
 
 from pants.backend.python.goals import lockfile
 from pants.backend.python.goals.lockfile import GeneratePythonLockfile
@@ -614,7 +614,7 @@ def test_venv_pex_resolve_info(rule_runner: RuleRunner, pex_type: type[Pex | Ven
     assert dists[3].version == Version("2.23.0")
     # requires_dists is parsed from metadata written by the pex tool, and is always
     #   a set of valid pkg_resources.Requirements.
-    assert Requirement.parse('PySocks!=1.5.7,>=1.5.6; extra == "socks"') in dists[3].requires_dists
+    assert Requirement('PySocks!=1.5.7,>=1.5.6; extra == "socks"') in dists[3].requires_dists
     assert dists[4].project_name == "urllib3"