Merge pull request #18 from nennigb/fix-ci-var

Fix unset environement variable in CI.

.github/workflows/ci-ubuntu.yml

@@ -42,6 +42,8 @@ jobs:
     #     # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
     #     flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Install the package
+      env: 
+        EASTEREIG_USE_FPOLY: ${{ matrix.EASTEREIG_USE_FPOLY }}   
       run: |
         pip install -e .
         # Check if .so is there