CI: Win32 Build

Author: ax3l

.github/workflows/windows.yml

@@ -77,3 +77,28 @@ jobs:
 
 # add before install, and fix Python path:
 # ctest --test-dir build -C Debug --output-on-failure
+
+  build_win_32bit:
+    name: MSVC 32bit w/o MPI
+    runs-on: windows-latest
+    if: github.event.pull_request.draft == false
+    steps:
+    - uses: actions/checkout@v4
+    - uses: conda-incubator/setup-miniconda@v3
+      name: Setup conda
+      with:
+        architecture: "x86"
+        auto-update-conda: true
+        activate-environment: openpmd-api-nompi-dev
+        environment-file: conda_nompi.yml
+        channels: conda-forge
+        channel-priority: true
+    - name: Build & Install
+      run: |
+        cmake -S . -B build   ^
+              -G "Ninja"      ^
+              -DCMAKE_BUILD_TYPE=Release    ^
+              -DopenPMD_USE_MPI=OFF
+        cmake --build build --config Release --parallel 2
+        ctest --test-dir build --output-on-failure -C Release
+        cmake --build build --config Release --target install

conda_nompi.yml

@@ -0,0 +1,42 @@
+# This is a Conda environment file.
+#
+# Activating and installing this environment will provide all dependencies
+# that are needed for full-feature development:
+# - conda env create --file conda.yml
+# - conda activate openpmd-api-dev
+#
+# If you need more packages in that environment, e.g. jupyter, run:
+# - mamba install -y -c conda-forge jupyter jupyterlab dask-labextension
+#
+
+name: openpmd-api-nompi-dev
+channels:
+  - conda-forge
+dependencies:
+  - adios=*=nompi*
+  - adios2=*=nompi*
+#  - catch2  # shipped internally
+  - ccache
+  - curl
+  - cmake
+  - compilers
+  - dask
+  - doxygen
+  - git
+  - hdf5=*=nompi*
+  - mamba
+  - make
+  - ninja
+  - numpy
+  - openmpi
+  - pandas
+  - pkg-config
+  - pip
+  - pre-commit
+  - pyarrow  # for dask
+#  - pybind11  # shipped internally
+  - python>=3.8
+
+# just a note for later hackery, we could install pip packages inside the env, too:
+#  - pip:
+#    - "-r requirements.txt"