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fix: add py::mod_gil_used() spelling, support pedantic tests #5797
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            henryiii
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Nice, thanks!
      
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Description
Seeing if I can reproduce the warning-as-error in iminuit (scikit-hep/iminuit#1100). I seem to have failed, but at least we can pass pedantic now for earlier C++ versions. This was mostly working around the trailing comma issue that goes away in C++20.
I've added a new way to spell
py::mod_gil_not_used(false):py::mod_gil_used(). If we ever were to change the default (which might make sense if free-threading becomes default), it would be good to have a (nice) way to specify the previous behavior.Suggested changelog entry:
py::mod_gil_used()as replacement spelling topy::mod_gil_not_used(false).📚 Documentation preview 📚: https://pybind11--5797.org.readthedocs.build/