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fix: ignore empty CIBW_ARCHS #2541

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Merged
merged 1 commit into from
Aug 11, 2025
Merged

fix: ignore empty CIBW_ARCHS #2541

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4 changes: 3 additions & 1 deletion cibuildwheel/options.py
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Original file line number Diff line number Diff line change
Expand Up @@ -657,7 +657,9 @@ def globals(self) -> GlobalOptions:
)
requires_python = None if requires_python_str is None else SpecifierSet(requires_python_str)

archs_config_str = args.archs or self.reader.get("archs", option_format=ListFormat(sep=" "))
archs_config_str = args.archs or self.reader.get(
"archs", option_format=ListFormat(sep=" "), ignore_empty=True
)
architectures = Architecture.parse_config(archs_config_str, platform=self.platform)

# Process `--only`
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9 changes: 9 additions & 0 deletions unit_test/main_tests/main_platform_test.py
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Expand Up @@ -278,3 +278,12 @@ def test_pyodide_on_windows(monkeypatch, capsys):

assert exit.value.code == 2
assert "Building for pyodide is not supported on Windows" in err


def test_empty_archs_platform(platform, intercepted_build_args, monkeypatch):
monkeypatch.setenv("CIBW_ARCHS", "")

main()

options = intercepted_build_args.args[0]
assert options.globals.architectures == Architecture.auto_archs(platform)
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