Universally use cuda.pathfinder._utils.platform_aware.IS_WINDOWS

Author: rwgk

cuda_pathfinder/cuda/pathfinder/_dynamic_libs/find_nvidia_dynamic_lib.py

@@ -9,13 +9,13 @@
 
 from cuda.pathfinder._dynamic_libs.load_dl_common import DynamicLibNotFoundError
 from cuda.pathfinder._dynamic_libs.supported_nvidia_libs import (
-    IS_WINDOWS,
     SITE_PACKAGES_LIBDIRS_LINUX,
     SITE_PACKAGES_LIBDIRS_WINDOWS,
     is_suppressed_dll_file,
 )
 from cuda.pathfinder._utils.env_vars import get_cuda_home_or_path
 from cuda.pathfinder._utils.find_sub_dirs import find_sub_dirs, find_sub_dirs_all_sitepackages
+from cuda.pathfinder._utils.platform_aware import IS_WINDOWS
 
 
 def _no_such_file_in_sub_dirs(

cuda_pathfinder/cuda/pathfinder/_dynamic_libs/load_nvidia_dynamic_lib.py

@@ -7,7 +7,7 @@
 
 from cuda.pathfinder._dynamic_libs.find_nvidia_dynamic_lib import _FindNvidiaDynamicLib
 from cuda.pathfinder._dynamic_libs.load_dl_common import LoadedDL, load_dependencies
-from cuda.pathfinder._dynamic_libs.supported_nvidia_libs import IS_WINDOWS
+from cuda.pathfinder._utils.platform_aware import IS_WINDOWS
 
 if IS_WINDOWS:
     from cuda.pathfinder._dynamic_libs.load_dl_windows import (

cuda_pathfinder/cuda/pathfinder/_dynamic_libs/supported_nvidia_libs.py

@@ -7,9 +7,7 @@
 #     SUPPORTED_WINDOWS_DLLS
 #     SUPPORTED_LINUX_SONAMES
 
-import sys
-
-IS_WINDOWS = sys.platform == "win32"
+from cuda.pathfinder._utils.platform_aware import IS_WINDOWS
 
 SUPPORTED_LIBNAMES_COMMON = (
     # Core CUDA Runtime and Compiler

cuda_pathfinder/cuda/pathfinder/_headers/find_nvidia_headers.py

@@ -7,9 +7,9 @@
 from typing import Optional
 
 from cuda.pathfinder._headers import supported_nvidia_headers
-from cuda.pathfinder._headers.supported_nvidia_headers import IS_WINDOWS
 from cuda.pathfinder._utils.env_vars import get_cuda_home_or_path
 from cuda.pathfinder._utils.find_sub_dirs import find_sub_dirs_all_sitepackages
+from cuda.pathfinder._utils.platform_aware import IS_WINDOWS
 
 
 def _abs_norm(path: Optional[str]) -> Optional[str]:

cuda_pathfinder/cuda/pathfinder/_headers/supported_nvidia_headers.py

@@ -1,10 +1,9 @@
 # SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-import sys
 from typing import Final
 
-IS_WINDOWS = sys.platform == "win32"
+from cuda.pathfinder._utils.platform_aware import IS_WINDOWS
 
 SUPPORTED_HEADERS_CTK_COMMON = {
     "cccl": "cuda/std/version",

cuda_pathfinder/tests/child_load_nvidia_dynamic_lib_helper.py

@@ -29,10 +29,10 @@ def child_process_func(libname):
     from cuda.pathfinder import DynamicLibNotFoundError, load_nvidia_dynamic_lib
     from cuda.pathfinder._dynamic_libs.load_nvidia_dynamic_lib import _load_lib_no_cache
     from cuda.pathfinder._dynamic_libs.supported_nvidia_libs import (
-        IS_WINDOWS,
         SUPPORTED_LINUX_SONAMES,
         SUPPORTED_WINDOWS_DLLS,
     )
+    from cuda.pathfinder._utils.platform_aware import IS_WINDOWS
 
     try:
         loaded_dl_fresh = load_nvidia_dynamic_lib(libname)

cuda_pathfinder/tests/test_find_nvidia_headers.py

@@ -22,11 +22,11 @@
 
 from cuda.pathfinder import find_nvidia_header_directory
 from cuda.pathfinder._headers.supported_nvidia_headers import (
-    IS_WINDOWS,
     SUPPORTED_HEADERS_CTK,
     SUPPORTED_HEADERS_CTK_ALL,
     SUPPORTED_SITE_PACKAGE_HEADER_DIRS_CTK,
 )
+from cuda.pathfinder._utils.platform_aware import IS_WINDOWS
 
 STRICTNESS = os.environ.get("CUDA_PATHFINDER_TEST_FIND_NVIDIA_HEADERS_STRICTNESS", "see_what_works")
 assert STRICTNESS in ("see_what_works", "all_must_work")

cuda_pathfinder/tests/test_load_nvidia_dynamic_lib.py

@@ -14,7 +14,7 @@
 from cuda.pathfinder._dynamic_libs import supported_nvidia_libs
 from cuda.pathfinder._utils.find_site_packages_dll import find_all_dll_files_via_metadata
 from cuda.pathfinder._utils.find_site_packages_so import find_all_so_files_via_metadata
-from cuda.pathfinder._utils.platform_aware import quote_for_shell
+from cuda.pathfinder._utils.platform_aware import IS_WINDOWS, quote_for_shell
 
 STRICTNESS = os.environ.get("CUDA_PATHFINDER_TEST_LOAD_NVIDIA_DYNAMIC_LIB_STRICTNESS", "see_what_works")
 assert STRICTNESS in ("see_what_works", "all_must_work")
@@ -74,7 +74,7 @@ def test_runtime_error_on_non_64bit_python():
 @functools.cache
 def _get_libnames_for_test_load_nvidia_dynamic_lib():
     result = list(SUPPORTED_NVIDIA_LIBNAMES)
-    if supported_nvidia_libs.IS_WINDOWS:
+    if IS_WINDOWS:
         spld_other = supported_nvidia_libs.SITE_PACKAGES_LIBDIRS_WINDOWS_OTHER
         all_dyn_libs = find_all_dll_files_via_metadata()
         for libname in spld_other:
@@ -98,7 +98,7 @@ def test_load_nvidia_dynamic_lib(info_summary_append, libname):
     # to ensure isolation of global dynamic linking state (e.g., dlopen handles).
     # Without child processes, loading/unloading libraries during testing could
     # interfere across test cases and lead to nondeterministic or platform-specific failures.
-    timeout = 120 if supported_nvidia_libs.IS_WINDOWS else 30
+    timeout = 120 if IS_WINDOWS else 30
     result = spawned_process_runner.run_in_spawned_child_process(child_process_func, args=(libname,), timeout=timeout)
 
     def raise_child_process_failed():