* API: Make `numpy.h` compatible with both NumPy 1.x and 2.x
* TST: Update numpy dtype flags test to not covert flags to char
* API: Add `numpy2.h` instead and make `numpy.h` safe
This means that users of `numpy.h` cannot be broken, but need to
update to `numpy2.h` if they want to compile for NumPy 2.
Using Macros simply and didn't bother to try to remove unnecessary
code paths.
* API: Rather than `numpy2.h` use a define for the user.
* Thread `PYBIND11_NUMPY2_SUPPORT` through things and try to adept test matrix
* Small fixups (shouldn't matter)?
* Fixup. Does upgrading scipy help? (it shouldn't?)
(Some other small fixup)
* Use NumPy 2 nightlies for ubuntu-latest job also
* BUG: Fix numpy.bool check
* TST: Fix complexwarning
* BUG: Fix the fact that only the 50 slot is filled with the copy alias
(There were 3 functions all doing the same, only this slot survived 2.x)
* TST: One more test tweak
* TST: Use "long" name for long, since it changed on windows
* TST: Apparently we didn't always have ulong, so just use `L`
* TST: Enforce dtype='l' for test as default isn't long anymore on windows
* Rename macro and invert logic to PYBIND11_NUMPY_1_ONLY
* PYBIND11_INTERNAL_NUMPY_1_ONLY_DETECTED
* Test and code comment expansion
* CI: Use pre-releases of numpy/scipy from pip via explicit version
* CI: NumPy 2 only available on almalinux (as it is Python >=3.9)
* MAINT: Match name more exactly and adopt error phrasing
* MAINT: Pushed early, move helper to be private member
* fix error message compilation when using NumPy 1.x-only backcompat
* silence name shadowing warning
* chore: minor optimization
Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
---------
Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
Co-authored-by: Ralf W. Grosse-Kunstleve <rwgk@google.com>
Co-authored-by: Henry Schreiner <henryschreineriii@gmail.com>
