Update setup.py

Author: laramiel

setup.py

@@ -119,33 +119,30 @@ def find_package_modules(self, package, package_dir):
 
 
 def _configure_macos_deployment_target():
-  # CPython 3.14 requires MACOSX_DEPLOYMENT_TARGET >= 10.15, otherwise
   # TensorStore requires MACOSX_DEPLOYMENT_TARGET >= 10.14 in
   # order to support sized/aligned operator new/delete.
-  if sys.version_info > (3, 13):
-    min_macos_target = '10.15'
-  else:
-    min_macos_target = '10.14'
-
+  min_macos_target = '10.14'
   key = 'MACOSX_DEPLOYMENT_TARGET'
-  python_macos_target = str(sysconfig.get_config_var(key))
-  macos_target = python_macos_target
-  if macos_target and (
-      _parse_version(macos_target) < _parse_version(min_macos_target)
-  ):
-    macos_target = min_macos_target
-
-  macos_target_override = os.getenv(key)
-  if macos_target_override:
-    if _parse_version(macos_target_override) < _parse_version(macos_target):
+
+  macos_target = min_macos_target
+
+  # The macosx deployment target may be set when building python.
+  sysconfig_macos_target = str(sysconfig.get_config_var(key))
+  if sysconfig_macos_target and _parse_version(
+      sysconfig_macos_target
+  ) >= _parse_version(macos_target):
+    macos_target = sysconfig_macos_target
+
+  # Check the environment to see if there is an override.
+  env_macos_target = os.getenv(key)
+  if env_macos_target:
+    if _parse_version(env_macos_target) >= _parse_version(macos_target):
+      macos_target = env_macos_target
+    elif _parse_version(env_macos_target) < _parse_version(min_macos_target):
       print(
-          '%s=%s is set in environment but >= %s is required by this package '
-          'and >= %s is required by the current Python build'
-          % (key, macos_target_override, min_macos_target, python_macos_target)
+          f'WARNING: {key} is set to {env_macos_target}, but TensorStore'
+          f' requires at least {min_macos_target}.'
       )
-      sys.exit(1)
-    else:
-      macos_target = macos_target_override
 
   # Set MACOSX_DEPLOYMENT_TARGET in the environment, because the `wheel` package
   # checks there.  Note that Bazel receives the version via a command-line