Switch from pkg_resources.parse_version to packaging.version (#43)

colcon_package_information/package_augmentation/check_dependency_constraint.py

@@ -7,7 +7,7 @@
     package_augmentation_logger
 from colcon_core.package_augmentation import PackageAugmentationExtensionPoint
 from colcon_core.plugin_system import satisfies_version
-from pkg_resources import parse_version
+from packaging.version import Version
 
 logger = package_augmentation_logger.getChild('check_dependency_constraint')
 
@@ -46,7 +46,7 @@ def _check_version_constraints(self, desc, dep, dep_desc):
         if 'version' not in dep_desc.metadata:
             return
         try:
-            dep_version = parse_version(dep_desc.metadata['version'])
+            dep_version = Version(dep_desc.metadata['version'])
         except Exception:  # noqa: B902
             # skip check if the version fails to parse
             return
@@ -71,7 +71,7 @@ def gte(a, b):
                 continue
             op, msg = operators[key]
             try:
-                version_constraint = parse_version(value)
+                version_constraint = Version(value)
             except Exception:  # noqa: B902
                 logger.error(
                     "Failed to parse version '" + value + "' with " +

setup.cfg

@@ -28,6 +28,7 @@ keywords = colcon
 python_requires = >=3.6
 install_requires =
   colcon-core>=0.5.2
+  packaging
 packages = find:
 zip_safe = true
 
@@ -53,7 +54,7 @@ filterwarnings =
     error
     # Suppress deprecation warnings in other packages
     ignore:lib2to3 package is deprecated::scspell
-    ignore:pkg_resources is deprecated as an API::
+    ignore:pkg_resources is deprecated as an API::flake8_import_order
     ignore:SelectableGroups dict interface is deprecated::flake8
     ignore:Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated::pyreadline
 junit_suite_name = colcon-package-information

stdeb.cfg

@@ -1,5 +1,5 @@
 [colcon-package-information]
 No-Python2:
-Depends3: python3-colcon-core (>= 0.5.2)
+Depends3: python3-colcon-core (>= 0.5.2), python3-packaging
 Suite: focal jammy noble bookworm trixie
 X-Python3-Version: >= 3.6