Add back _get_numba_CUDA_INCLUDE_PATH from 2279bda (i.e. cuda_paths.py as it was right before re-forking)

Author: rwgk

cuda_bindings/cuda/bindings/_path_finder/cuda_paths.py

@@ -4,15 +4,51 @@
 import re
 import site
 import sys
+import traceback
+import warnings
 from collections import namedtuple
 from pathlib import Path
 
-from numba import config
-from numba.core.config import IS_WIN32
-from numba.misc.findlib import find_lib
+from .findlib import find_lib
+
+IS_WIN32 = sys.platform.startswith("win32")
 
 _env_path_tuple = namedtuple("_env_path_tuple", ["by", "info"])
 
+
+def _get_numba_CUDA_INCLUDE_PATH():
+    # From numba/numba/core/config.py
+
+    def _readenv(name, ctor, default):
+        value = os.environ.get(name)
+        if value is None:
+            return default() if callable(default) else default
+        try:
+            return ctor(value)
+        except Exception:
+            warnings.warn(  # noqa: B028
+                f"Environment variable '{name}' is defined but "
+                f"its associated value '{value}' could not be "
+                "parsed.\nThe parse failed with exception:\n"
+                f"{traceback.format_exc()}",
+                RuntimeWarning,
+            )
+            return default
+
+    if IS_WIN32:
+        cuda_path = os.environ.get("CUDA_PATH")
+        if cuda_path:  # noqa: SIM108
+            default_cuda_include_path = os.path.join(cuda_path, "include")
+        else:
+            default_cuda_include_path = "cuda_include_not_found"
+    else:
+        default_cuda_include_path = os.path.join(os.sep, "usr", "local", "cuda", "include")
+    CUDA_INCLUDE_PATH = _readenv("NUMBA_CUDA_INCLUDE_PATH", str, default_cuda_include_path)
+    return CUDA_INCLUDE_PATH
+
+
+config_CUDA_INCLUDE_PATH = _get_numba_CUDA_INCLUDE_PATH()
+
 SEARCH_PRIORITY = [
     "Conda environment",
     "Conda environment (NVIDIA package)",
@@ -502,7 +538,7 @@ def _get_include_dir():
     """Find the root include directory."""
     options = [
         ("Conda environment (NVIDIA package)", get_conda_include_dir()),
-        ("CUDA_INCLUDE_PATH Config Entry", config.CUDA_INCLUDE_PATH),
+        ("CUDA_INCLUDE_PATH Config Entry", config_CUDA_INCLUDE_PATH),
         # TODO: add others
     ]
     by, include_dir = _find_valid_path(options)