could it be the extra /?

compliance_checker/tests/test_cli.py

@@ -20,7 +20,9 @@
 
 from .conftest import datadir, static_files
 
-if platform.system() == "Windows":
+on_windows = platform.system() == "Windows"
+
+if on_windows:
     ncconfig = ["sh", f"{os.environ['CONDA_PREFIX']}\\Library\\bin\\nc-config"]
 else:
     ncconfig = ["nc-config"]
@@ -236,10 +238,6 @@ def _check_libnetcdf_version():
             < 8.0
         )
 
-    @pytest.mark.skipif(
-        platform.system() == "Windows",
-        reason="NCZarr triggers a segfault on Windows.",
-    )
     @pytest.mark.skipif(
         subprocess.check_output(ncconfig + ["--has-nczarr"]) != b"yes\n",
         reason="NCZarr is not available.",
@@ -267,6 +265,9 @@ def test_nczarr_pass_through(self, zarr_url):
             "check_filename",  # .zarr cannot pass a test that requires it to be named .nc
             "check_coordinate_variables_strict_monotonicity",  # FIXME: I believe there is a real problem with the original test data!
         ]
+        if on_windows:
+            zarr_url = zarr_url.replace("///", "//")
+
         return_value, errors = ComplianceChecker.run_checker(
             skip_checks=skip_checks,
             ds_loc=zarr_url,