skip install qigen(windows)

setup.py

@@ -4,6 +4,7 @@ from pathlib import Path
 from setuptools import setup, Extension, find_packages
 import subprocess
 import math
+import platform
 
 os.environ["CC"] = "g++"
 os.environ["CXX"] = "g++"
@@ -95,9 +96,10 @@ additional_setup_kwargs = dict()
 if BUILD_CUDA_EXT:
     from torch.utils import cpp_extension
     
+    if platform != 'Windows':
         p = int(subprocess.run("cat /proc/cpuinfo | grep cores | head -1", shell=True, check=True, text=True, stdout=subprocess.PIPE).stdout.split(" ")[2])
-
         subprocess.call(["python", "./autogptq_extension/qigen/generate.py", "--module", "--search", "--p", str(p)])
+        
     if not ROCM_VERSION:
         from distutils.sysconfig import get_python_lib
         conda_cuda_include_dir = os.path.join(get_python_lib(), "nvidia/cuda_runtime/include")
@@ -120,7 +122,11 @@ if BUILD_CUDA_EXT:
                 "autogptq_extension/cuda_256/autogptq_cuda_256.cpp",
                 "autogptq_extension/cuda_256/autogptq_cuda_kernel_256.cu"
             ]
-        ),
+        )
+    ]
+    
+    if platform != 'Windows':
+        extensions.append(
             cpp_extension.CppExtension(
                 "cQIGen",
                 [
@@ -128,7 +134,7 @@ if BUILD_CUDA_EXT:
                 ],
                 extra_compile_args = ["-O3", "-mavx", "-mavx2", "-mfma", "-march=native", "-ffast-math", "-ftree-vectorize", "-faligned-new", "-std=c++17", "-fopenmp", "-fno-signaling-nans", "-fno-trapping-math"]
             )
-    ]
+        )
         
     if os.name == "nt":
         # On Windows, fix an error LNK2001: unresolved external symbol cublasHgemm bug in the compilation