Declare the dependencies and update vendoring routine for setuptools (only) to simply install the dependencies to the _vendor folder.

Author: jaraco

pyproject.toml

@@ -24,7 +24,16 @@ classifiers = [
 ]
 keywords = ["CPAN PyPI distutils eggs package management"]
 requires-python = ">=3.8"
-dependencies = []
+dependencies = [
+	"packaging>=24",
+	"ordered-set>=3.1.1",
+	"more_itertools>=8.8",
+	"jaraco.text>=3.7",
+	"importlib_resources>=5.10.2",
+	"importlib_metadata>=6",
+	"tomli>=2.0.1",
+	"wheel>=0.43.0",
+]
 
 [project.urls]
 Source = "https://github.com/pypa/setuptools"

setuptools/extern/__init__.py

@@ -77,14 +77,17 @@ def install(self):
 # cog.outl(f"names = (\n{names}\n)")
 # ]]]
 names = (
-    'backports',
+    'autocommand',
     'importlib_metadata',
     'importlib_resources',
+    'inflect',
     'jaraco',
     'more_itertools',
     'ordered_set',
     'packaging',
     'tomli',
+    'typeguard',
+    'typing_extensions',
     'wheel',
     'zipp',
 )

tools/vendored.py

@@ -4,6 +4,7 @@
 import subprocess
 from textwrap import dedent
 
+from jaraco.packaging import metadata
 from path import Path
 
 
@@ -13,7 +14,7 @@ def remove_all(paths):
 
 
 def update_vendored():
-    update_pkg_resources()
+    # update_pkg_resources()
     update_setuptools()
 
 
@@ -207,19 +208,37 @@ def update_pkg_resources():
     rewrite_platformdirs(vendor / "platformdirs")
 
 
+def load_deps():
+    """
+    Read the dependencies from `.`.
+    """
+    return metadata.load('.').get_all('Requires-Dist')
+
+
+def install_deps(deps, vendor):
+    """
+    Install the deps to vendor.
+    """
+    install_args = [
+        sys.executable,
+        '-m',
+        'pip',
+        'install',
+        '--target',
+        str(vendor),
+        '--python-version',
+        '3.8',
+        '--only-binary',
+        ':all:',
+    ] + list(deps)
+    subprocess.check_call(install_args)
+
+
 def update_setuptools():
     vendor = Path('setuptools/_vendor')
-    install(vendor)
-    rewrite_packaging(vendor / 'packaging', 'setuptools.extern')
-    repair_namespace(vendor / 'jaraco')
-    repair_namespace(vendor / 'backports')
-    rewrite_jaraco_text(vendor / 'jaraco/text', 'setuptools.extern')
-    rewrite_jaraco_functools(vendor / 'jaraco/functools', 'setuptools.extern')
-    rewrite_jaraco_context(vendor / 'jaraco', 'setuptools.extern')
-    rewrite_importlib_resources(vendor / 'importlib_resources', 'setuptools.extern')
-    rewrite_importlib_metadata(vendor / 'importlib_metadata', 'setuptools.extern')
-    rewrite_more_itertools(vendor / "more_itertools")
-    rewrite_wheel(vendor / "wheel")
+    deps = load_deps()
+    clean(vendor)
+    install_deps(deps, vendor)
 
 
 def yield_top_level(name):

tox.ini

@@ -75,6 +75,9 @@ allowlist_externals = git, sh
 deps =
 	path
 	cogapp
+	jaraco.packaging
+	# workaround for pypa/pyproject-hooks#192
+	pyproject-hooks<1.1
 commands =
 	vendor: python -m tools.vendored
 	sh -c "git grep -l -F '\[\[\[cog' | xargs -t cog -I {toxinidir} -r"  # update `*.extern`