Ensure Poetry installs dependencies for a specific Python version (#3)

* Ensure Poetry installs dependencies for a specific Python version

* revert: Add Python 3.7 to test matrix

* Don't stop other Python version tests when one fails

* Revert "revert: Add Python 3.7 to test matrix"

This reverts commit 240c3a1.

.github/workflows/test.yml

@@ -8,6 +8,7 @@ on: [push]
 jobs:
   pytest:
     runs-on: ubuntu-latest
+    continue-on-error: true
     env:
       GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
     strategy:
@@ -24,6 +25,7 @@ jobs:
         pip install poetry
     - name: Install dependencies
       run: |
+        poetry env use ${{ matrix.python-version }}
         poetry install
     - name: Test with pytest
       run: |