I'm a bit late in replying to this but here are some unordered thoughts.
* I'm fairly relaxed about using `Py_BUILD_CORE` if useful - I think we
mostly do have good fallback paths for most things so can adapt quickly
when stuff changes.
* CYTHON_USE_CPYTHON_CORE_DETAILS sounds reasonable, but it's yet
another variation to test.
* I wonder if fixing up the limited API implementation should be higher
priority than creating a third level been "full" and "limited API".
* I recall we were planning to ditch c89 as a strict requirement after
3.0? Incompatibility with C++ might be more of an issue though.
* Even so, if there's a good way of turning it off then we could say:
"if you want strict c89 support then you can't use
CYTHON_USE_CPYTHON_CORE_DETAILS" and people would always have options.
* Waiting and seeing may be a good option for now.
David
On 30/10/2023 20:42, Stefan Behnel wrote:
Thank you for your comments so far.
Stefan Behnel schrieb am 29.10.23 um 22:06:
I seriously start wondering if we shouldn't just define
"Py_BUILD_CORE" (or have our own "CYTHON_USE_CPYTHON_CORE_DETAILS"
macro guard that triggers its #define) and include the internal
"pycore_*.h" CPython header files from here:
https://github.com/python/cpython/tree/main/Include/internal
I just remembered that there's a one major technical issue with this.
CPython now requires C99 for its own code base (Py3.13 actually uses
"-std=c11" on my side). While they care about keeping public header
files compatible with C89 and C++, their internal header files may not
always have that quality, and won't be tested for it.
So, governance is one argument, but technical reasons can also make
this appear less appealing overall.
I'll let things settle some more and see in what direction Py3.13 will
eventually be moving.
Stefan
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