COMPAT: Adapt to Numpy 2.0 dtype changes (pandas-dev#57780)

Author: seberg

pandas/_libs/src/datetime/pd_datetime.c

@@ -20,6 +20,9 @@ This file is derived from NumPy 1.7. See NUMPY_LICENSE.txt
 #include <Python.h>
 
 #include "datetime.h"
+/* Need to import_array for np_datetime.c (for NumPy 1.x support only) */
+#define PY_ARRAY_UNIQUE_SYMBOL PANDAS_DATETIME_NUMPY
+#include "numpy/ndarrayobject.h"
 #include "pandas/datetime/pd_datetime.h"
 #include "pandas/portable.h"
 
@@ -255,5 +258,6 @@ static struct PyModuleDef pandas_datetimemodule = {
 
 PyMODINIT_FUNC PyInit_pandas_datetime(void) {
   PyDateTime_IMPORT;
+  import_array();
   return PyModuleDef_Init(&pandas_datetimemodule);
 }

pandas/_libs/src/vendored/numpy/datetime/np_datetime.c

@@ -16,16 +16,17 @@ This file is derived from NumPy 1.7. See NUMPY_LICENSE.txt
 
 // Licence at LICENSES/NUMPY_LICENSE
 
-#define NO_IMPORT
-
 #ifndef NPY_NO_DEPRECATED_API
 #define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION
 #endif // NPY_NO_DEPRECATED_API
 
 #include <Python.h>
 
 #include "pandas/vendored/numpy/datetime/np_datetime.h"
-#include <numpy/ndarraytypes.h>
+
+#define NO_IMPORT_ARRAY
+#define PY_ARRAY_UNIQUE_SYMBOL PANDAS_DATETIME_NUMPY
+#include <numpy/ndarrayobject.h>
 #include <numpy/npy_common.h>
 
 #if defined(_WIN32)
@@ -1070,5 +1071,8 @@ void pandas_timedelta_to_timedeltastruct(npy_timedelta td,
  */
 PyArray_DatetimeMetaData
 get_datetime_metadata_from_dtype(PyArray_Descr *dtype) {
-  return (((PyArray_DatetimeDTypeMetaData *)dtype->c_metadata)->meta);
+#if NPY_ABI_VERSION < 0x02000000
+#define PyDataType_C_METADATA(dtype) ((dtype)->c_metadata)
+#endif
+  return ((PyArray_DatetimeDTypeMetaData *)PyDataType_C_METADATA(dtype))->meta;
 }