windows: fix fcntl import (commaai#2329)

* windows: fix fcntl import

* fix indentation

* add windows ci

* make sure CI catches import error

* Revert "make sure CI catches import error"

This reverts commit b18043a.

Author: pd0wm

.github/workflows/test.yaml

@@ -44,6 +44,22 @@ jobs:
       - uses: actions/checkout@v4
       - run: ./test.sh
 
+  windows:
+    name: windows pip package test
+    runs-on: windows-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - uses: astral-sh/setup-uv@v5
+      - name: Install package with uv
+        run: uv pip install --system .
+      - name: Verify importing panda
+        run: python -c "from panda import Panda"
+
+
   misra_linter:
     name: MISRA C:2012 Linter
     runs-on: ubuntu-latest

python/spi.py

@@ -1,6 +1,5 @@
 import binascii
 import os
-import fcntl
 import math
 import time
 import struct
@@ -12,6 +11,13 @@
 from .constants import McuType, MCU_TYPE_BY_IDCODE, USBPACKET_MAX_SIZE
 from .utils import logger
 
+# No fcntl on Windows
+try:
+  import fcntl
+except ImportError:
+  fcntl = None # type: ignore
+
+# No spidev on MacOS/Windows
 try:
   import spidev
 except ImportError: