Merge pull request #9464 from NoahGorny/fix-pip-debug-parse-version

commands: debug: Use packaging.version.parse to compare

Author: pradyunsg

news/9461.bugfix.rst

@@ -0,0 +1 @@
+commands: debug: Use packaging.version.parse to compare between versions.

src/pip/_internal/commands/debug.py

@@ -6,6 +6,7 @@
 import pip._vendor
 from pip._vendor import pkg_resources
 from pip._vendor.certifi import where
+from pip._vendor.packaging.version import parse as parse_version
 
 from pip import __file__ as pip_location
 from pip._internal.cli import cmdoptions
@@ -100,7 +101,7 @@ def show_actual_vendor_versions(vendor_txt_versions):
             extra_message = ' (Unable to locate actual module version, using'\
                             ' vendor.txt specified version)'
             actual_version = expected_version
-        elif actual_version != expected_version:
+        elif parse_version(actual_version) != parse_version(expected_version):
             extra_message = ' (CONFLICT: vendor.txt suggests version should'\
                             ' be {})'.format(expected_version)
         logger.info('%s==%s%s', module_name, actual_version, extra_message)