tests: test installed sympy version

Author: mloubout

.github/workflows/pytest-core-nompi.yml

@@ -166,6 +166,19 @@ jobs:
         python3 -m pip install ${{ env.PIPFLAGS }} sympy==${{matrix.sympy}}
         python3 -m pip install ${{ env.PIPFLAGS }} -e .[tests,extras]
 
+    - name: Check sympy version
+      if: "!contains(matrix.name, 'docker')"
+      run: |
+        # get the full version, e.g. "1.13.1"
+        full="$(pip show sympy | awk '/^Version:/ {print $2}')"
+        # strip off the last ".patch" so you get "1.13"
+        majmin="${full%.*}"
+        expected=${{ matrix.sympy }}
+        if [[ "$majmin" != "$expected" ]]; then
+          echo "::error::Sympy version mismatch: expected ${ { matrix.sympy } }, got $full"
+          exit 1
+        fi
+
     - name: Check configuration
       run: |
         ${{ env.RUN_CMD }} python3 -c "from devito import configuration; print(''.join(['%s: %s \n' % (k, v) for (k, v) in configuration.items()]))"