make automated source distribution work (and test if it works on GA)

Author: slayoo

.github/workflows/tests.yml

@@ -61,6 +61,8 @@ jobs:
 
       - run: pytest -v -s -We -p no:unraisableexception tests
 
+      - run: python -m build
+
 #      - if: ${{ failure() }}
 #        uses: mxschmitt/action-tmate@v3
 #        with:

MANIFEST.in

@@ -0,0 +1,50 @@
+exclude examples
+graft gitmodules/partmc/src/
+graft gitmodules/sundials/src/sunnonlinsol/newton/
+graft gitmodules/sundials/src/sunnonlinsol/fixedpoint/
+graft gitmodules/sundials/src/nvector/serial/
+graft gitmodules/sundials/src/sunlinsol/band/
+graft gitmodules/sundials/src/sunlinsol/dense/
+graft gitmodules/sundials/src/cvode/
+graft gitmodules/sundials/src/sundials/
+graft gitmodules/sundials/include/sundials/
+include gitmodules/sundials/cmake/SundialsSetupConfig.cmake
+include gitmodules/sundials/cmake/SundialsSetupCompilers.cmake
+include gitmodules/sundials/cmake/SundialsIndexSize.cmake
+include gitmodules/sundials/src/sunmatrix/CMakeLists.txt
+include gitmodules/sundials/src/sunmatrix/band/CMakeLists.txt
+include gitmodules/sundials/src/sunmatrix/dense/CMakeLists.txt
+include gitmodules/sundials/src/sunmatrix/sparse/CMakeLists.txt
+include gitmodules/sundials/src/sunlinsol/CMakeLists.txt
+include gitmodules/sundials/src/sunlinsol/band/CMakeLists.txt
+include gitmodules/sundials/src/sunlinsol/dense/CMakeLists.txt
+include gitmodules/sundials/src/sunlinsol/pcg/CMakeLists.txt
+include gitmodules/sundials/src/sunlinsol/spbcgs/CMakeLists.txt
+include gitmodules/sundials/src/sunlinsol/spfgmr/CMakeLists.txt
+include gitmodules/sundials/src/sunlinsol/spgmr/CMakeLists.txt
+include gitmodules/sundials/src/sunlinsol/sptfqmr/CMakeLists.txt
+include gitmodules/sundials/src/sunnonlinsol/CMakeLists.txt
+include gitmodules/sundials/src/nvector/CMakeLists.txt
+include gitmodules/sundials/src/sunmatrix/band/sunmatrix_band.c
+include gitmodules/sundials/src/sunmatrix/dense/sunmatrix_dense.c
+include gitmodules/sundials/src/sunmatrix/sparse/sunmatrix_sparse.c
+include gitmodules/sundials/src/sunmatrix/band/sunmatrix_band.c
+include gitmodules/sundials/src/sunmatrix/dense/sunmatrix_dense.c
+include gitmodules/sundials/src/sunlinsol/pcg/sunlinsol_pcg.c
+include gitmodules/sundials/src/sunlinsol/spbcgs/sunlinsol_spbcgs.c
+include gitmodules/sundials/src/sunlinsol/spfgmr/sunlinsol_spfgmr.c
+include gitmodules/sundials/src/sunlinsol/spgmr/sunlinsol_spgmr.c
+include gitmodules/sundials/src/sunlinsol/sptfqmr/sunlinsol_sptfqmr.c
+include gitmodules/sundials/sundials_nvector_senswrapper.h
+
+include gitmodules/pybind11/CMakeLists.txt
+include gitmodules/pybind11/tools/pybind11Common.cmake
+include gitmodules/pybind11/tools/pybind11Tools.cmake
+include gitmodules/pybind11/tools/FindPythonLibsNew.cmake
+graft gitmodules/pybind11/include/pybind11/
+
+graft gitmodules/json/include/nlohmann/
+include gitmodules/span/include/tcb/span.hpp
+include gitmodules/pybind11_json/include/pybind11_json/pybind11_json.hpp
+
+include gitmodules/partmc/src/condense_solver.c