Skip pyarrow test on Windows.

Author: lohedges

tests/Sandpit/Exscientia/FreeEnergy/test_alchemical_free_energy.py

@@ -2,6 +2,7 @@
 import os
 import pathlib
 import shutil
+import sys
 import time
 
 import numpy as np
@@ -129,6 +130,10 @@ def test_difference(self, gmx_complex, gmx_ligand):
 @pytest.mark.skipif(
     has_alchemlyb_parquet is False, reason="Requires alchemlyb > 2.1.0."
 )
+@pytest.mark.skipif(
+    sys.platform == "win32",
+    reason="pyarrow 24+ crashes on Windows (upstream bug).",
+)
 class TestAnalysePARQUET:
     @staticmethod
     @pytest.fixture(scope="class")