Bug 2322719 - python-django-compressor fails to build with Python 3.14: 'Constant' object has no attribute 's'
Summary: python-django-compressor fails to build with Python 3.14: 'Constant' object h...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: python-django-compressor
Version: rawhide
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Michel Lind
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On: 2292613
Blocks: PYTHON3.14
TreeView+ depends on / blocked
 
Reported: 2024-10-30 11:37 UTC by Karolina Surma
Modified: 2024-12-20 23:11 UTC (History)
7 users (show)

Fixed In Version: python-django-compressor-4.5.1-2.fc42
Clone Of:
Environment:
Last Closed: 2024-12-20 23:11:53 UTC
Type: Bug
Embargoed:


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System ID Private Priority Status Summary Last Updated
Github django-compressor django-compressor issues 1270 0 None open django-compressor uses ast classes deprecated since 3.8 and removed in 3.14 2024-12-20 22:42:20 UTC

Description Karolina Surma 2024-10-30 11:37:22 UTC
python-django-compressor fails to build with Python 3.14.0a1.

This comes from project's setup.py:

Traceback (most recent call last):
  File "/usr/lib/rpm/redhat/pyproject_buildrequires.py", line 624, in main
    generate_requires(
    ~~~~~~~~~~~~~~~~~^
        include_runtime=args.runtime,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<10 lines>...
        config_settings=parse_config_settings_args(args.config_settings),
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/lib/rpm/redhat/pyproject_buildrequires.py", line 514, in generate_requires
    generate_build_requirements(backend, requirements)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/rpm/redhat/pyproject_buildrequires.py", line 302, in generate_build_requirements
    new_reqs = get_requires(config_settings=requirements.config_settings)
  File "/usr/lib/python3.14/site-packages/setuptools/build_meta.py", line 325, in get_requires_for_build_wheel
    return self._get_build_requires(config_settings, requirements=['wheel'])
           ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.14/site-packages/setuptools/build_meta.py", line 295, in _get_build_requires
    self.run_setup()
    ~~~~~~~~~~~~~~^^
  File "/usr/lib/python3.14/site-packages/setuptools/build_meta.py", line 487, in run_setup
    super().run_setup(setup_script=setup_script)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.14/site-packages/setuptools/build_meta.py", line 311, in run_setup
    exec(code, locals())
    ~~~~^^^^^^^^^^^^^^^^
  File "<string>", line 133, in <module>
  File "<string>", line 28, in find_version
  File "/usr/lib64/python3.14/ast.py", line 515, in visit
    return visitor(node)
  File "/usr/lib64/python3.14/ast.py", line 523, in generic_visit
    self.visit(item)
    ~~~~~~~~~~^^^^^^
  File "/usr/lib64/python3.14/ast.py", line 515, in visit
    return visitor(node)
  File "<string>", line 17, in visit_Assign
AttributeError: 'Constant' object has no attribute 's'
According to: https://docs.python.org/dev/whatsnew/3.14.html#id2

Remove the following classes. They were all deprecated since Python 3.8, and have emitted deprecation warnings since Python 3.12:
ast.Bytes
ast.Ellipsis
ast.NameConstant
ast.Num
ast.Str

Use ast.Constant instead. As a consequence of these removals, user-defined visit_Num, visit_Str, visit_Bytes, visit_NameConstant and visit_Ellipsis methods on custom ast.NodeVisitor subclasses will no longer be called when the NodeVisitor subclass is visiting an AST. Define a visit_Constant method instead.

Also, remove the following deprecated properties on ast.Constant, which were present for compatibility with the now-removed AST classes:
ast.Constant.n
ast.Constant.s

Use ast.Constant.value instead.
(Contributed by Alex Waygood in gh-119562.)


https://docs.python.org/3.14/whatsnew/3.14.html

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.14/fedora-rawhide-x86_64/08189201-python-django-compressor/

For all our attempts to build python-django-compressor with Python 3.14, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/package/python-django-compressor/

Testing and mass rebuild of packages is happening in copr.
You can follow these instructions to test locally in mock if your package builds with Python 3.14:
https://copr.fedorainfracloud.org/coprs/g/python/python3.14/

Let us know here if you have any questions.

Python 3.14 is planned to be included in Fedora 43.
To make that update smoother, we're building Fedora packages with all pre-releases of Python 3.14.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires),
so if this package is required a lot, it's important for us to get it fixed soon.

We'd appreciate help from the people who know this package best,
but if you don't want to work on this now, let us know so we can try to work around it on our side.

Comment 1 Michel Lind 2024-11-14 04:48:14 UTC
This needs to be reported upstream, it also affects the latest 4.5.1


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