Refactor dependency installation in workflows to handle optional pack…

…ages gracefully

.github/workflows/coverage_report.yml

@@ -19,9 +19,14 @@ jobs:
       uses: AnimMouse/setup-ffmpeg@v1
 
     - name: Install dependencies
+      # install all requirements. Note that the full requirements are installed separately
+      # so the job does not fail if one of the packages cannot be installed. This allows
+      # testing the package for newer python version even when some of the optional
+      # packages are not yet available.
       run: |
         python -m pip install --upgrade pip
-        pip install -r tests/requirements_full.txt
+        pip install -r requirements.txt
+        cat tests/requirements_full.txt | sed -e '/^\s*#.*$/d' -e '/^\s*$/d' | xargs -n 1 -I % sh -c "pip install % || true"
         pip install -r tests/requirements.txt
 
     - name: Generate serial coverage report

.github/workflows/tests_types.yml

@@ -19,11 +19,15 @@ jobs:
         python-version: ${{ matrix.pyversion }}
 
     - name: Install dependencies
-      # install all requirements
+      # install all requirements. Note that the full requirements are installed separately
+      # so the job does not fail if one of the packages cannot be installed. This allows
+      # testing the package for newer python version even when some of the optional
+      # packages are not yet available.
       run: |
         python -m pip install --upgrade pip
+        pip install -r requirements.txt
+        cat tests/requirements_full.txt | sed -e '/^\s*#.*$/d' -e '/^\s*$/d' | xargs -n 1 -I % sh -c "pip install % || true"
         pip install -r tests/requirements.txt
-        pip install -r tests/requirements_full.txt
         pip install types-PyYAML
 
     - name: Test types with mypy