File: safer-cythonize.patch

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From: Colin Watson <cjwatson@debian.org>
Date: Thu, 11 Dec 2025 11:23:06 +0000
Subject: Fix Cython build with Python 3.14

As described in https://bugs.debian.org/1122023, the Cython build fails
with Python 3.14.  This is similar to #23; it has come back because
Python 3.14 changed the default start method to `forkserver`, which has
similar properties to `spawn` in this area.

Rather than continuing to play whack-a-mole by special-casing more start
methods, it's better to take the approach suggested in
https://github.com/akornatskyy/wheezy.template/issues/23#issuecomment-737210953
and move most of `setup.py` into a function.

Forwarded: https://github.com/akornatskyy/wheezy.template/pull/117
Bug-Debian: https://bugs.debian.org/1122023
Last-Update: 2025-12-11
---
 setup.py | 141 ++++++++++++++++++++++++++++++++-------------------------------
 1 file changed, 72 insertions(+), 69 deletions(-)

diff --git a/setup.py b/setup.py
index e339b9c..ebb0f1a 100644
--- a/setup.py
+++ b/setup.py
@@ -1,81 +1,84 @@
 #!/usr/bin/env python
 
-import multiprocessing
 import os
 import re
 
 from setuptools import setup  # type: ignore[import]
 
-extra = {}
-try:
-    from Cython.Build import cythonize  # type: ignore[import]
 
-    p = os.path.join("src", "wheezy", "template")
-    extra["ext_modules"] = cythonize(
-        [os.path.join(p, "*.py"), os.path.join(p, "ext", "*.py")],
-        exclude=[
-            os.path.join(p, "__init__.py"),
-            os.path.join(p, "ext", "__init__.py"),
-        ],
-        # https://github.com/cython/cython/issues/3262
-        nthreads=0 if multiprocessing.get_start_method() == "spawn" else 2,
-        compiler_directives={"language_level": 3},
-        quiet=True,
+def run_build():
+    extra = {}
+    try:
+        from Cython.Build import cythonize  # type: ignore[import]
+
+        p = os.path.join("src", "wheezy", "template")
+        extra["ext_modules"] = cythonize(
+            [os.path.join(p, "*.py"), os.path.join(p, "ext", "*.py")],
+            exclude=[
+                os.path.join(p, "__init__.py"),
+                os.path.join(p, "ext", "__init__.py"),
+            ],
+            compiler_directives={"language_level": 3},
+            quiet=True,
+        )
+    except ImportError:
+        pass
+
+    README = open("README.md").read()
+    VERSION = (
+        re.search(  # type: ignore
+            r'__version__ = "(.+)"',
+            open("src/wheezy/template/__init__.py").read(),
+        )
+        .group(1)
+        .strip()
     )
-except ImportError:
-    pass
 
-README = open("README.md").read()
-VERSION = (
-    re.search(  # type: ignore
-        r'__version__ = "(.+)"',
-        open("src/wheezy/template/__init__.py").read(),
+    setup(
+        name="wheezy.template",
+        version=VERSION,
+        python_requires=">=3.9",
+        description="A lightweight template library",
+        long_description=README,
+        long_description_content_type="text/markdown",
+        url="https://github.com/akornatskyy/wheezy.template",
+        author="Andriy Kornatskyy",
+        author_email="andriy.kornatskyy@live.com",
+        license="MIT",
+        classifiers=[
+            "Environment :: Web Environment",
+            "Intended Audience :: Developers",
+            "License :: OSI Approved :: MIT License",
+            "Natural Language :: English",
+            "Operating System :: OS Independent",
+            "Programming Language :: Python",
+            "Programming Language :: Python :: 3.9",
+            "Programming Language :: Python :: 3.10",
+            "Programming Language :: Python :: 3.11",
+            "Programming Language :: Python :: 3.12",
+            "Programming Language :: Python :: 3.13",
+            "Programming Language :: Python :: Implementation :: CPython",
+            "Programming Language :: Python :: Implementation :: PyPy",
+            "Topic :: Internet :: WWW/HTTP",
+            "Topic :: Internet :: WWW/HTTP :: Dynamic Content",
+            "Topic :: Software Development :: Libraries :: Python Modules",
+            "Topic :: Software Development :: Widget Sets",
+            "Topic :: Text Processing :: Markup :: HTML",
+        ],
+        keywords="html markup template preprocessor",
+        packages=["wheezy", "wheezy.template", "wheezy.template.ext"],
+        package_data={"wheezy.template": ["py.typed"]},
+        package_dir={"": "src"},
+        namespace_packages=["wheezy"],
+        zip_safe=False,
+        install_requires=[],
+        entry_points={
+            "console_scripts": ["wheezy.template=wheezy.template.console:main"]
+        },
+        platforms="any",
+        **extra
     )
-    .group(1)
-    .strip()
-)
 
-setup(
-    name="wheezy.template",
-    version=VERSION,
-    python_requires=">=3.9",
-    description="A lightweight template library",
-    long_description=README,
-    long_description_content_type="text/markdown",
-    url="https://github.com/akornatskyy/wheezy.template",
-    author="Andriy Kornatskyy",
-    author_email="andriy.kornatskyy@live.com",
-    license="MIT",
-    classifiers=[
-        "Environment :: Web Environment",
-        "Intended Audience :: Developers",
-        "License :: OSI Approved :: MIT License",
-        "Natural Language :: English",
-        "Operating System :: OS Independent",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3.11",
-        "Programming Language :: Python :: 3.12",
-        "Programming Language :: Python :: 3.13",
-        "Programming Language :: Python :: Implementation :: CPython",
-        "Programming Language :: Python :: Implementation :: PyPy",
-        "Topic :: Internet :: WWW/HTTP",
-        "Topic :: Internet :: WWW/HTTP :: Dynamic Content",
-        "Topic :: Software Development :: Libraries :: Python Modules",
-        "Topic :: Software Development :: Widget Sets",
-        "Topic :: Text Processing :: Markup :: HTML",
-    ],
-    keywords="html markup template preprocessor",
-    packages=["wheezy", "wheezy.template", "wheezy.template.ext"],
-    package_data={"wheezy.template": ["py.typed"]},
-    package_dir={"": "src"},
-    namespace_packages=["wheezy"],
-    zip_safe=False,
-    install_requires=[],
-    entry_points={
-        "console_scripts": ["wheezy.template=wheezy.template.console:main"]
-    },
-    platforms="any",
-    **extra
-)
+
+if __name__ == "__main__":
+    run_build()