Upgrade to packaging 26.0. (#3083)

Author: jsirois

CHANGES.md

@@ -1,5 +1,12 @@
 # Release Notes
 
+## 2.85.3
+
+This release upgrades vendored `packaginged for Python>=3.8 to the latest release; bringing some bug
+fixes and performance improvements.
+
+* Upgrade vendored `packaging` to 26.0 for Python>=3.8. (#3083)
+
 ## 2.85.2
 
 This release makes running a PEX using venv-execution and sh-bootstrapping (that is, build with

pex/vendor/__init__.py

@@ -313,7 +313,7 @@ def iter_vendor_specs(
         yield VendorSpec.pinned("packaging", "24.0", import_path="packaging_24_0")
     if not python_major_minor or python_major_minor >= (3, 8):
         # Modern packaging for everyone else.
-        yield VendorSpec.pinned("packaging", "25.0", import_path="packaging_25_0")
+        yield VendorSpec.pinned("packaging", "26.0", import_path="packaging_26_0")
 
     # N.B.: All vendored items below are optional and may not be present in Pex distributions
     # targeting newer Pythons.

pex/vendor/__main__.py

@@ -45,7 +45,6 @@
     safe_open,
     safe_rmtree,
 )
-from pex.pep_427 import ZipMetadata
 from pex.typing import TYPE_CHECKING
 from pex.vendor import VendorSpec, iter_vendor_specs
 
@@ -491,7 +490,7 @@ def vendorize(root_dir, vendor_specs, prefix, update):
     # Import all code needed below now before we move any vendored bits it depends on temporarily
     # back to the prefix site-packages dir.
     from pex.dist_metadata import ProjectNameAndVersion, Requirement
-    from pex.pep_427 import InstallableWheel, InstallPaths, install_wheel_chroot
+    from pex.pep_427 import InstallableWheel, InstallPaths, ZipMetadata, install_wheel_chroot
     from pex.wheel import Wheel
 
     for vendor_spec in vendor_specs:

pex/vendor/_vendored/packaging_25_0/.layout.json

@@ -0,0 +1 @@
+{"fingerprint":"29da023f25cc72013236649eded0c5ed67f15be66f5cb903b3de1ce8e3d39a12","record_relpath":"packaging-26.0.dist-info/RECORD","root_is_purelib":true,"stash_dir":".prefix","sys_path_entries":["."]}

pex/vendor/_vendored/packaging_25_0/constraints.txt

@@ -0,0 +1 @@
+packaging==26.0