diff --git a/.efrocachemap b/.efrocachemap
index 2df785d1..e81ffaf7 100644
--- a/.efrocachemap
+++ b/.efrocachemap
@@ -4076,18 +4076,18 @@
   "build/prefab/full/linux_x86_64_gui/release/ballisticakit": "e20ef3249191a24b428fd30b585a6ab9",
   "build/prefab/full/linux_x86_64_server/debug/dist/ballisticakit_headless": "c1b483c4c1639af5ad247e9252f51956",
   "build/prefab/full/linux_x86_64_server/release/dist/ballisticakit_headless": "742d5e4793a557f7d322267cdf25fde3",
-  "build/prefab/full/mac_arm64_gui/debug/ballisticakit": "4880ca58a6b9ce36769657c0f8a5a4c5",
+  "build/prefab/full/mac_arm64_gui/debug/ballisticakit": "5ae7b4b94a8147a1e8dddda74171fd3b",
   "build/prefab/full/mac_arm64_gui/release/ballisticakit": "c8084478951a16ba144f12d65386b9b3",
-  "build/prefab/full/mac_arm64_server/debug/dist/ballisticakit_headless": "06c0d46f6b991aed566a17d32c0cd85d",
+  "build/prefab/full/mac_arm64_server/debug/dist/ballisticakit_headless": "43c61a6274c670df8e80eabb6ad7f0cf",
   "build/prefab/full/mac_arm64_server/release/dist/ballisticakit_headless": "77607a1c853c968a04340e538c196f4d",
-  "build/prefab/full/mac_x86_64_gui/debug/ballisticakit": "358193a334d56860d284716432c95f1e",
+  "build/prefab/full/mac_x86_64_gui/debug/ballisticakit": "e50958914ab0373f88f5276fd0ec53b7",
   "build/prefab/full/mac_x86_64_gui/release/ballisticakit": "ee39adeed9e2f6405c83f5f81ccf54fc",
-  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticakit_headless": "9bc9ffe2da1a79524eb26a551ee50ba3",
+  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticakit_headless": "085fd185878b6dd66f6fa84599ba3b44",
   "build/prefab/full/mac_x86_64_server/release/dist/ballisticakit_headless": "ed1c7c6769b381526f5ac8d9e16a8bad",
-  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "ddce8a5ebc89ad56f23b24e2b04a5edc",
-  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "8dc47367a8feb2908244f4b45ef332e8",
-  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "d8fd33af6124baf1bfd8ab39372abf17",
-  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "78801f3a9a811c0e62528b60b78e36e1",
+  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "605bbb25423a8802879417a254bfeaa3",
+  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "3206b201e39a81bed6abe9e949fa7265",
+  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "6b15d0733463244646f92add404cf5fb",
+  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "fef286304937f68f98127c3c8a876821",
   "build/prefab/lib/linux_arm64_gui/debug/libballisticaplus.a": "ee6e1bdccf0f3db9c198ba5632739103",
   "build/prefab/lib/linux_arm64_gui/release/libballisticaplus.a": "2f84ca77788e244cdc3edaeb00a0dc4c",
   "build/prefab/lib/linux_arm64_server/debug/libballisticaplus.a": "ee6e1bdccf0f3db9c198ba5632739103",
@@ -4104,14 +4104,14 @@
   "build/prefab/lib/mac_x86_64_gui/release/libballisticaplus.a": "e0c3972bcc77fa5fc5aed5802308b4b1",
   "build/prefab/lib/mac_x86_64_server/debug/libballisticaplus.a": "89cd2bd873934be3e46f409663e9c2cb",
   "build/prefab/lib/mac_x86_64_server/release/libballisticaplus.a": "e0c3972bcc77fa5fc5aed5802308b4b1",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.lib": "89423e0c466b20a5bfbd660d85607264",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.pdb": "0b1921de7f4505e9ad177b0be5fc5cb5",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.lib": "6fae4927a00f7e78822e1efdac4c421d",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.pdb": "11178659f946fde59ad43af0c8a8aaac",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.lib": "59fa8ce09122d57e9ca64d28401f6f4a",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.pdb": "9f2ada0e934bba54e04924f389243d09",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.lib": "1b5ca2f7ef5b934946d55486fe08bee3",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.pdb": "9d03b912cadc179744712665bdeaf866",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.lib": "68224f3523b77310bbaa34ef9c37c561",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.pdb": "46a78119815b6a765088494616ff88cf",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.lib": "a4507c6fac638c4840ad1fb9ab41e7e4",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.pdb": "8e3cba46d14cab6c2cd31b8bf10b2f75",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.lib": "e8deee688bf3e99e1cd009cf6a65c33b",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.pdb": "c489d1b272ad5f9c168802a68b14eb6e",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.lib": "dfc015787d50f7c36e36b406846269b3",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.pdb": "b696873186a2d66114199a7af399a755",
   "src/assets/ba_data/python/babase/_mgen/__init__.py": "f885fed7f2ed98ff2ba271f9dbe3391c",
   "src/assets/ba_data/python/babase/_mgen/enums.py": "f8cd3af311ac63147882590123b78318",
   "src/ballistica/base/mgen/pyembed/binding_base.inc": "eeddad968b176000e31c65be6206a2bc",
diff --git a/tools/batools/build.py b/tools/batools/build.py
index b72660b1..7cf96e0c 100644
--- a/tools/batools/build.py
+++ b/tools/batools/build.py
@@ -693,7 +693,6 @@ def cmake_prep_dir(dirname: str, verbose: bool = False) -> None:
     """
     # pylint: disable=too-many-locals
     import json
-    import platform
     from efrotools import PYVER
 
     @dataclass
@@ -744,17 +743,13 @@ def cmake_prep_dir(dirname: str, verbose: bool = False) -> None:
     entries.append(Entry('python_path', python_path))
 
     # ...or if mac xcode sdk paths change
+    mac_xcode_sdks_dir = (
+        '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/'
+        'Developer/SDKs/'
+    )
     mac_xcode_sdks = (
-        ','.join(
-            sorted(
-                os.listdir(
-                    '/Applications/Xcode.app/Contents/'
-                    'Developer/Platforms/MacOSX.platform/'
-                    'Developer/SDKs/'
-                )
-            )
-        )
-        if platform.system() == 'Darwin'
+        ','.join(sorted(os.listdir(mac_xcode_sdks_dir)))
+        if os.path.isdir(mac_xcode_sdks_dir)
         else ''
     )
     entries.append(Entry('mac_xcode_sdks', mac_xcode_sdks))