Merge branch 'main' into pyright-initial-config

.github/workflows/main.yml

@@ -61,6 +61,12 @@ jobs:
         - platform: ubuntu-latest
           python: "3.10"
           distutils: stdlib
+        # Python 3.8, 3.9 are on macos-13 but not macos-latest (macos-14-arm64)
+        # https://github.com/actions/setup-python/issues/850
+        # https://github.com/actions/setup-python/issues/696#issuecomment-1637587760
+        - {python: "3.8", platform: "macos-13"}
+        exclude:
+        - {python: "3.8", platform: "macos-latest"}
     runs-on: ${{ matrix.platform }}
     continue-on-error: ${{ matrix.python == '3.13' }}
     env:
@@ -89,7 +95,8 @@ jobs:
         shell: bash
         run: |
           rm -rf dist
-          pipx run build
+          # workaround for pypa/setuptools#4333
+          pipx run --pip-args 'pyproject-hooks!=1.1' build
           echo "PRE_BUILT_SETUPTOOLS_SDIST=$(ls dist/*.tar.gz)" >> $GITHUB_ENV
           echo "PRE_BUILT_SETUPTOOLS_WHEEL=$(ls dist/*.whl)" >> $GITHUB_ENV
           rm -rf setuptools.egg-info  # Avoid interfering with the other tests
@@ -122,6 +129,7 @@ jobs:
         job:
         - diffcov
         - docs
+        - check-extern
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4

NEWS.rst

@@ -20,7 +20,7 @@ v69.4.2
 Bugfixes
 --------
 
-- Merged bugfix for pypa/distutils#246 (#27489545)
+- Merged bugfix for pypa/distutils#246.
 
 
 v69.4.1
@@ -119,7 +119,7 @@ Improved Documentation
 ----------------------
 
 - Updated documentation referencing obsolete Python 3.7 code. -- by :user:`Avasam` (#4096)
-- Changed ``versionadded`` for "Type information included by default" feature from ``v68.3.0`` to ``v69.0.0`` -- by :user:Avasam` (#4182)
+- Changed ``versionadded`` for "Type information included by default" feature from ``v68.3.0`` to ``v69.0.0`` -- by :user:`Avasam` (#4182)
 - Described the auto-generated files -- by :user:`VladimirFokow` (#4198)
 - Updated "Quickstart" to describe the current status of ``setup.cfg`` and ``pyproject.toml`` -- by :user:`VladimirFokow` (#4200)
 

README.rst

@@ -1,32 +1,34 @@
-.. image:: https://img.shields.io/pypi/v/setuptools.svg
+.. |pypi-version| image:: https://img.shields.io/pypi/v/setuptools.svg
    :target: https://pypi.org/project/setuptools
 
-.. image:: https://img.shields.io/pypi/pyversions/setuptools.svg
+.. |py-version| image:: https://img.shields.io/pypi/pyversions/setuptools.svg
 
-.. image:: https://github.com/pypa/setuptools/actions/workflows/main.yml/badge.svg
+.. |test-badge| image:: https://github.com/pypa/setuptools/actions/workflows/main.yml/badge.svg
    :target: https://github.com/pypa/setuptools/actions?query=workflow%3A%22tests%22
    :alt: tests
 
-.. image:: https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/charliermarsh/ruff/main/assets/badge/v2.json
-    :target: https://github.com/astral-sh/ruff
-    :alt: Ruff
+.. |ruff-badge| image:: https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/charliermarsh/ruff/main/assets/badge/v2.json
+   :target: https://github.com/astral-sh/ruff
+   :alt: Ruff
 
-.. image:: https://img.shields.io/readthedocs/setuptools/latest.svg
-    :target: https://setuptools.pypa.io
+.. |docs-badge| image:: https://img.shields.io/readthedocs/setuptools/latest.svg
+   :target: https://setuptools.pypa.io
 
-.. image:: https://img.shields.io/badge/skeleton-2024-informational
+.. |skeleton-badge| image:: https://img.shields.io/badge/skeleton-2024-informational
    :target: https://blog.jaraco.com/skeleton
 
-.. image:: https://img.shields.io/codecov/c/github/pypa/setuptools/master.svg?logo=codecov&logoColor=white
+.. |codecov-badge| image:: https://img.shields.io/codecov/c/github/pypa/setuptools/master.svg?logo=codecov&logoColor=white
    :target: https://codecov.io/gh/pypa/setuptools
 
-.. image:: https://tidelift.com/badges/github/pypa/setuptools?style=flat
+.. |tidelift-badge| image:: https://tidelift.com/badges/github/pypa/setuptools?style=flat
    :target: https://tidelift.com/subscription/pkg/pypi-setuptools?utm_source=pypi-setuptools&utm_medium=readme
 
-.. image:: https://img.shields.io/discord/803025117553754132
+.. |discord-badge| image:: https://img.shields.io/discord/803025117553754132
    :target: https://discord.com/channels/803025117553754132/815945031150993468
    :alt: Discord
 
+|pypi-version| |py-version| |test-badge| |ruff-badge| |docs-badge| |skeleton-badge| |codecov-badge| |discord-badge|
+
 See the `Quickstart <https://setuptools.pypa.io/en/latest/userguide/quickstart.html>`_
 and the `User's Guide <https://setuptools.pypa.io/en/latest/userguide/>`_ for
 instructions on how to use Setuptools.

newsfragments/4255.misc.rst

@@ -0,0 +1 @@
+Treat ``EncodingWarning``s as errors in tests. -- by :user:`Avasam`

newsfragments/4278.bugfix.rst

@@ -0,0 +1,2 @@
+Fix finder template for lenient editable installs of implicit nested namespaces
+constructed by using ``package_dir`` to reorganise directory structure.

newsfragments/4280.misc.rst

@@ -0,0 +1 @@
+Avoid leaking loop variable ``name`` in ``AbstractSandbox`` -- by :user:`Avasam`

newsfragments/4308.misc.rst

@@ -0,0 +1,2 @@
+Fix ``setuptools_wheel`` fixture and avoid the recursive creation of
+``build/lib/build/lib/build/...`` directories in the project root during tests.

newsfragments/4309.removal.rst

@@ -0,0 +1,7 @@
+Further adoption of UTF-8 in ``setuptools``.
+This change regards mostly files produced and consumed during the build process
+(e.g. metadata files, script wrappers, automatically updated config files, etc..)
+Although precautions were taken to minimize disruptions, some edge cases might
+be subject to backwards incompatibility.
+
+Support for ``"locale"`` encoding is now **deprecated**.

newsfragments/4312.doc.rst

@@ -0,0 +1 @@
+Uses RST substitution to put badges in 1 line.

newsfragments/4332.feature.rst

@@ -0,0 +1 @@
+Modernized and refactored VCS handling in package_index.

pkg_resources/__init__.py

@@ -1524,8 +1524,7 @@ def run_script(self, script_name, namespace):
         script_filename = self._fn(self.egg_info, script)
         namespace['__file__'] = script_filename
         if os.path.exists(script_filename):
-            with open(script_filename) as fid:
-                source = fid.read()
+            source = _read_utf8_with_fallback(script_filename)
             code = compile(source, script_filename, 'exec')
             exec(code, namespace, namespace)
         else:
@@ -2175,11 +2174,10 @@ def non_empty_lines(path):
     """
     Yield non-empty lines from file at path
     """
-    with open(path) as f:
-        for line in f:
-            line = line.strip()
-            if line:
-                yield line
+    for line in _read_utf8_with_fallback(path).splitlines():
+        line = line.strip()
+        if line:
+            yield line
 
 
 def resolve_egg_link(path):
@@ -3323,3 +3321,35 @@ def _initialize_master_working_set():
     # match order
     list(map(working_set.add_entry, sys.path))
     globals().update(locals())
+
+
+#  ---- Ported from ``setuptools`` to avoid introducing an import inter-dependency ----
+LOCALE_ENCODING = "locale" if sys.version_info >= (3, 10) else None
+
+
+def _read_utf8_with_fallback(file: str, fallback_encoding=LOCALE_ENCODING) -> str:
+    """See setuptools.unicode_utils._read_utf8_with_fallback"""
+    try:
+        with open(file, "r", encoding="utf-8") as f:
+            return f.read()
+    except UnicodeDecodeError:  # pragma: no cover
+        msg = f"""\
+        ********************************************************************************
+        `encoding="utf-8"` fails with {file!r}, trying `encoding={fallback_encoding!r}`.
+
+        This fallback behaviour is considered **deprecated** and future versions of
+        `setuptools/pkg_resources` may not implement it.
+
+        Please encode {file!r} with "utf-8" to ensure future builds will succeed.
+
+        If this file was produced by `setuptools` itself, cleaning up the cached files
+        and re-building/re-installing the package with a newer version of `setuptools`
+        (e.g. by updating `build-system.requires` in its `pyproject.toml`)
+        might solve the problem.
+        ********************************************************************************
+        """
+        # TODO: Add a deadline?
+        #       See comment in setuptools.unicode_utils._Utf8EncodingNeeded
+        warnings.warns(msg, PkgResourcesDeprecationWarning, stacklevel=2)
+        with open(file, "r", encoding=fallback_encoding) as f:
+            return f.read()

pkg_resources/_vendor/vendored.txt

@@ -9,5 +9,7 @@ jaraco.text==3.7.0
 importlib_resources==5.10.2
 # required for importlib_resources on older Pythons
 zipp==3.7.0
+# required for jaraco.functools
+more_itertools==10.2.0
 # required for jaraco.context on older Pythons
 backports.tarfile

pkg_resources/extern/__init__.py

@@ -70,12 +70,21 @@ def install(self):
             sys.meta_path.append(self)
 
 
+# [[[cog
+# import cog
+# from tools.vendored import yield_root_package
+# names = "\n".join(f"    {x!r}," for x in yield_root_package('pkg_resources'))
+# cog.outl(f"names = (\n{names}\n)")
+# ]]]
 names = (
     'packaging',
     'platformdirs',
+    'typing_extensions',
     'jaraco',
     'importlib_resources',
+    'zipp',
     'more_itertools',
     'backports',
 )
+# [[[end]]]
 VendorImporter(__name__, names).install()

pytest.ini

@@ -10,22 +10,31 @@ filterwarnings=
 	# Fail on warnings
 	error
 
+	# Workarounds for pypa/setuptools#3810
+	# Can't use EncodingWarning as it doesn't exist on Python 3.9.
+	# These warnings only appear on Python 3.10+
+
 	## upstream
 
 	# Ensure ResourceWarnings are emitted
 	default::ResourceWarning
 
+	# python/mypy#17057
+	ignore:'encoding' argument not specified::mypy
+	ignore:'encoding' argument not specified::configparser
+	# ^-- ConfigParser is called by mypy,
+	#     but ignoring the warning in `mypy` is not enough
+	#     to make it work on PyPy
+
 	# realpython/pytest-mypy#152
 	ignore:'encoding' argument not specified::pytest_mypy
 
-	# python/cpython#100750
-	ignore:'encoding' argument not specified::platform
+	# TODO: Set encoding when openning/writing tmpdir files with pytest's LocalPath.open
+	# see pypa/setuptools#4326
+	ignore:'encoding' argument not specified::_pytest
 
-	# pypa/build#615
-	ignore:'encoding' argument not specified::build.env
-
-	# dateutil/dateutil#1284
-	ignore:datetime.datetime.utcfromtimestamp:DeprecationWarning:dateutil.tz.tz
+	# Already fixed in pypa/distutils, but present in stdlib
+	ignore:'encoding' argument not specified::distutils
 
 	## end upstream
 
@@ -69,11 +78,6 @@ filterwarnings=
 	# https://github.com/pypa/setuptools/issues/3655
 	ignore:The --rsyncdir command line argument and rsyncdirs config variable are deprecated.:DeprecationWarning
 
-	# Workarounds for pypa/setuptools#3810
-	# Can't use EncodingWarning as it doesn't exist on Python 3.9
-	default:'encoding' argument not specified
-	default:UTF-8 Mode affects locale.getpreferredencoding().
-
 	# Avoid errors when testing pkg_resources.declare_namespace
 	ignore:.*pkg_resources\.declare_namespace.*:DeprecationWarning
 

setup.cfg

@@ -62,7 +62,7 @@ testing =
 	jaraco.path>=3.2.0
 	build[virtualenv]>=1.0.3
 	filelock>=3.4.0
-	ini2toml[lite]>=0.9
+	ini2toml[lite]>=0.14
 	tomli-w>=1.0.0
 	pytest-timeout
 	pytest-perf; \
@@ -78,6 +78,10 @@ testing =
 	tomli
 	# No Python 3.12 dependencies require importlib_metadata, but needed for type-checking since we import it directly
 	importlib_metadata
+	pytest-subprocess
+
+	# workaround for pypa/setuptools#4333
+	pyproject-hooks!=1.1
 
 docs =
 	# upstream
@@ -98,6 +102,9 @@ docs =
 	sphinxcontrib-towncrier
 	sphinx-notfound-page >=1,<2
 
+	# workaround for pypa/setuptools#4333
+	pyproject-hooks!=1.1
+
 ssl =
 
 certs =

setuptools/_imp.py

@@ -6,6 +6,7 @@
 import os
 import importlib.util
 import importlib.machinery
+import tokenize
 
 from importlib.util import module_from_spec
 
@@ -60,13 +61,13 @@ def find_module(module, paths=None):
 
         if suffix in importlib.machinery.SOURCE_SUFFIXES:
             kind = PY_SOURCE
+            file = tokenize.open(path)
         elif suffix in importlib.machinery.BYTECODE_SUFFIXES:
             kind = PY_COMPILED
+            file = open(path, 'rb')
         elif suffix in importlib.machinery.EXTENSION_SUFFIXES:
             kind = C_EXTENSION
 
-        if kind in {PY_SOURCE, PY_COMPILED}:
-            file = open(path, mode)
     else:
         path = None
         suffix = mode = ''

setuptools/build_meta.py

@@ -2,7 +2,7 @@
 
 Previously, when a user or a command line tool (let's call it a "frontend")
 needed to make a request of setuptools to take a certain action, for
-example, generating a list of installation requirements, the frontend would
+example, generating a list of installation requirements, the frontend
 would call "setup.py egg_info" or "setup.py bdist_wheel" on the command line.
 
 PEP 517 defines a different method of interfacing with setuptools. Rather

setuptools/command/bdist_egg.py

@@ -54,7 +54,7 @@ def __bootstrap__():
         __bootstrap__()
         """
     ).lstrip()
-    with open(pyfile, 'w') as f:
+    with open(pyfile, 'w', encoding="utf-8") as f:
         f.write(_stub_template % resource)
 
 
@@ -200,10 +200,9 @@ def run(self):  # noqa: C901  # is too complex (14)  # FIXME
             log.info("writing %s", native_libs)
             if not self.dry_run:
                 ensure_directory(native_libs)
-                libs_file = open(native_libs, 'wt')
-                libs_file.write('\n'.join(all_outputs))
-                libs_file.write('\n')
-                libs_file.close()
+                with open(native_libs, 'wt', encoding="utf-8") as libs_file:
+                    libs_file.write('\n'.join(all_outputs))
+                    libs_file.write('\n')
         elif os.path.isfile(native_libs):
             log.info("removing %s", native_libs)
             if not self.dry_run:
@@ -350,9 +349,8 @@ def write_safety_flag(egg_dir, safe):
             if safe is None or bool(safe) != flag:
                 os.unlink(fn)
         elif safe is not None and bool(safe) == flag:
-            f = open(fn, 'wt')
-            f.write('\n')
-            f.close()
+            with open(fn, 'wt', encoding="utf-8") as f:
+                f.write('\n')
 
 
 safety_flags = {

setuptools/command/build_ext.py

@@ -340,9 +340,8 @@ def _write_stub_file(self, stub_file: str, ext: Extension, compile=False):
         if compile and os.path.exists(stub_file):
             raise BaseError(stub_file + " already exists! Please delete.")
         if not self.dry_run:
-            f = open(stub_file, 'w')
-            f.write(
-                '\n'.join([
+            with open(stub_file, 'w', encoding="utf-8") as f:
+                content = '\n'.join([
                     "def __bootstrap__():",
                     "   global __bootstrap__, __file__, __loader__",
                     "   import sys, os, pkg_resources, importlib.util" + if_dl(", dl"),
@@ -366,8 +365,7 @@ def _write_stub_file(self, stub_file: str, ext: Extension, compile=False):
                     "__bootstrap__()",
                     "",  # terminal \n
                 ])
-            )
-            f.close()
+                f.write(content)
         if compile:
             self._compile_and_remove_stub(stub_file)