Build fails for Python3.13

[sxntxn]

Build fails for python 3.13, because PyEval_CallFunction has been removed, see python/cpython#105107 .

Compiler error:
bpl-subset/bpl_subset/pycudaboost/python/call.hpp:62:9: error: there are no arguments to ‘PyEval_CallFunction’ that depend on a template parameter, so a declaration of ‘PyEval_CallFunction’ must be available [-fpermissive]
... the offending code is actually in https://github.com/inducer/bpl-subset .
Simply replacing PyEval_CallFunction with PyObject_CallFunction seems to do the trick, but probably Python<3.9 (<3.8?) will not work anymore. boost switched over to PyObject_CallFunction in 1.75.0, for what it's worth.

[inducer]

Thanks for letting me know! #393 is still the plan in the longer run, but in the meantime, I will likely go with the approach of hacking bpl-subset. I'm curious why you suspect Python 3.8 will not work any more as a result? The PR you link mentions that PyObject_CallFunction has been available since 3.0---unless I misread something there.

[sxntxn]

Never mind, I misread the https://docs.python.org/3/c-api/call.html API doc.

[inducer]

Done. Thanks again for the report, and for the pointer towards a fix. I'll roll a release to make this more broadly accessible.

[inducer]

https://pypi.org/project/pycuda/2025.1/

[sxntxn]

Thank you very much for fixing this quickly! 👍