Update

[ghstack-poisoned]

Author: GregoryComer

install_requirements.py

@@ -110,10 +110,16 @@ def install_requirements(use_pytorch_nightly):
         check=True,
     )
 
-    LOCAL_REQUIREMENTS = [
-        "third-party/ao",  # We need the latest kernels for fast iteration, so not relying on pypi.
-        "extension/llm/tokenizers",  # TODO(larryliu0820): Setup a pypi package for this.
-    ]
+    LOCAL_REQUIREMENTS = (
+        [
+            "third-party/ao",  # We need the latest kernels for fast iteration, so not relying on pypi.
+        ]
+        + [
+            "extension/llm/tokenizers",  # TODO(larryliu0820): Setup a pypi package for this.
+        ]
+        if sys.platform != "win32"
+        else []
+    )  # TODO(gjcomer): Re-enable when buildable on Windows.
 
     # Install packages directly from local copy instead of pypi.
     # This is usually not recommended.