Issue 174 ci (#1)

* install blender for mesh simplification test

.github/workflows/test-package.yml

@@ -29,8 +29,7 @@ jobs:
         sudo apt-get update -y -qq
         sudo apt-get install -y libdbus-1-3 libxkbcommon-x11-0 libxcb-icccm4 \
           libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 \
-          libxcb-xinerama0 libxcb-xinput0 libxcb-xfixes0 graphviz graphviz-dev \
-          mesa-vulkan-drivers
+          libxcb-xinerama0 libxcb-xinput0 libxcb-xfixes0 graphviz
     - name: Install dependencies
       run: |
         pip install --upgrade pip
@@ -45,6 +44,11 @@ jobs:
     #   if: ${{ matrix.igraph == 'igraph' }}
     - name: Report dependency versions
       run: pip freeze -r requirements.txt
+    - uses: moguri/setup-blender@v1
+      with:
+          blender-version: '4.2.4'
+    - name: Install Blender
+      run: blender --version
     - name: Test
       uses: coactions/setup-xvfb@v1
       with: