'CI:test'

Author: smasky

.github/workflows/ci.yml

@@ -33,7 +33,15 @@ jobs:
           # Build requirements + runtime deps (setup.py imports numpy/scipy/pybind11/Cython)
           # Pin numpy<2 for compatibility with the bundled cython/pybind extensions.
           python -m pip install "numpy<2" "scipy<2" "Cython<3" pybind11
-          python -m pip install prettytable xarray netcdf4
+          python -m pip install prettytable xarray
+
+      - name: Install netCDF4 (py38 pinned to avoid source build)
+        run: |
+          if "${{ matrix.python-version }}" == "3.8" (
+            python -m pip install "netcdf4<1.7"
+          ) else (
+            python -m pip install netcdf4
+          )
 
       - name: Build native extensions (in-place)
         run: |

pyproject.toml

@@ -27,7 +27,10 @@ dependencies = [
   "scipy",
   "prettytable",
   "xarray",
-  "netcdf4",
+  # netCDF4 wheels for py38 on Windows can be missing for newer releases,
+  # causing pip to fall back to a source build that requires HDF5 headers.
+  "netcdf4<1.7; python_version<'3.9'",
+  "netcdf4; python_version>='3.9'",
 ]
 classifiers = [
     "Programming Language :: Python :: 3.8",