try again 3

Author: Jeffrey Whitaker

.github/workflows/build_latest.yml

@@ -63,13 +63,13 @@ jobs:
     - name: Install python dependencies via pip
       run: |
         python -m pip install --upgrade pip
-        #python -m pip install numpy cython cftime pytest twine wheel check-manifest mpi4py typing-extensions
+        python -m pip install numpy cython cftime pytest twine wheel check-manifest typing-extensions
 
     - name: Install netcdf4-python
       run: |
         export PATH=${NETCDF_DIR}/bin:${PATH} 
         export NETCDF_PLUGIN_DIR=${{ github.workspace }}/netcdf-c-${NETCDF_VERSION}/plugins/plugindir
-        python -m pip install .[mpi]
+        python -m pip install .
     - name: Test
       run: |
         export PATH=${NETCDF_DIR}/bin:${PATH} 

pyproject.toml

@@ -3,7 +3,7 @@ requires = [
     "Cython>=0.29",
     "oldest-supported-numpy ; python_version < '3.9'",
     "numpy>=2.0.0rc1 ; python_version >= '3.9'",
-    "setuptools>=61", "setuptools_scm[toml]>=3.4"
+    "mpi4py", "setuptools>=61", "setuptools_scm[toml]>=3.4"
 ]
 build-backend = "setuptools.build_meta"
 
@@ -46,7 +46,6 @@ tests = [
   "packaging",
   "pytest",
 ]
-mpi = ["mpi4py"]
 
 [project.readme]
 text = """\