Add petsc4py to github build workflow

.github/workflows/ci.yml

@@ -39,6 +39,50 @@ jobs:
         python-version: ${{ matrix.python-version}}
         architecture: x64
 
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libhypre-dev libmumps-seq-dev
+        pip install numpy mpi4py
+        pip install petsc petsc4py
+
+    - name: Set environment variables
+      run: |
+        echo "PETSC_DIR=/usr/local/petsc" >> $GITHUB_ENV
+        echo "PETSC_ARCH=arch-linux-c-opt" >> $GITHUB_ENV
+
+    # Installation of petsc in parallel
+
+    # - name: Install dependencies
+    #   run: |
+    #     sudo apt-get update
+    #     sudo apt-get install -y mpich
+    #     pip install numpy mpi4py
+    #     pip install petsc petsc4py
+
+    # - name: Set environment variables
+    #   run: |
+    #     echo "PETSC_DIR=/usr/local/petsc" >> $GITHUB_ENV
+    #     echo "PETSC_ARCH=arch-linux-c-opt" >> $GITHUB_ENV
+
+    # - name: Install Hypre
+    #   run: |
+    #     git clone https://github.com/hypre-space/hypre.git
+    #     cd hypre/src
+    #     ./configure --with-MPI
+    #     make
+    #     sudo make install
+
+    # - name: Install MUMPS
+    #   run: |
+    #     git clone https://github.com/scivision/mumps.git
+    #     cd mumps
+    #     mkdir build
+    #     cd build
+    #     cmake -G "Ninja" -DMUMPS_parallel=on ..
+    #     cmake --build .
+    #     sudo make install
+
     - name: Install DarSIA
       run: pip install .[dev]