compiling python-c bindings: PyArrayObject * pointer type problems

[indebetouw]

Hi Tom et al,

I'm having a lot of trouble installing on a new ubuntu machine; I can compile the binaries but get failures with

pip install -e ".[recommended]"

numerous errors like this:

 hyperion/grid/_voronoi_core.c:159:35: warning: passing argument 1 of ‘PyArray_DATA’ from incompatible pointer type [-Wincompatible-pointer-types]
    159 |         memcpy((int*)PyArray_DATA(spoints_idx_array),sampling_idx,sizeof(int) * (nsites + 1));
        |                                   ^~~~~~~~~~~~~~~~~
        |                                   |
        |                                   PyObject * {aka struct _object *}
  /tmp/pip-build-env-vpn6xttn/overlay/lib/python3.9/site-packages/numpy/_core/include/numpy/ndarraytypes.h:1508:35: note: expected ‘const PyArrayObject *’ {aka ‘const struct tagPyArrayObject *’} but argument is of type ‘PyObject *’ {aka ‘struct _object *’}
   1508 | PyArray_DATA(const PyArrayObject *arr)
        |              ~~~~~~~~~~~~~~~~~~~~~^~~

I tried downgrading numpy to 1.22 or 1.24 without success, so its not obviously the numpy2 API

Any ideas of things I could try? Thank you.

[indebetouw]

huh as soon as I put in the issue it worked with python 3.9 weird... should I worry about those warnings then?