fix(build): replace removed SourceFileLoader.load_module() in setup.py for python 3.15

[Kumzy]

Hello,

Python 3.15 will remove importlib's load_module(), deprecated since 3.4, so every build from source failed before compilation started with:

AttributeError: 'SourceFileLoader' object has no attribute 'load_module'

I tested it with the rc1 of python 3.15

Documentation about it there: https://docs.python.org/3/deprecations/pending-removal-in-3.15.html

I did not add the 3.15 in pyproject.toml or in the CI workflows as the 3.15 version is still in RC

[Copilot]

🟢 Approval recommended

The change correctly replaces a removed/deprecated importlib API with the supported module spec loading approach and is limited in scope.

Pull request overview

Updates the source build process to remain compatible with Python 3.15 by replacing the deprecated/removed importlib.machinery.SourceFileLoader.load_module() usage in setup.py when reading the package version.

Changes:

• Replace SourceFileLoader(...).load_module() with importlib.util.spec_from_file_location() + module_from_spec() + exec_module().
• Adjust imports accordingly (import importlib.util instead of import importlib).

File summaries

File	Description
setup.py	Modernizes the version-loading logic to avoid load_module() removal in Python 3.15.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Lite

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[bogdanp05]

Thanks for the patch! Could you sign off the commit? I'll approve the workflows after