Revert to targeting .

.github/workflows/python-package.yml

@@ -36,12 +36,10 @@ jobs:
       # Exit with error if the code is not properly formatted; show diffs;
       # `black` compatibility.
       # The diffs should be the same as fixes made by running `isort .` in the root
-      # project folder, which picks up config from `pyproject.toml` and checks
-      # formatting in these directories
+      # project folder, which picks up config from `pyproject.toml`
       run: |
         source $VENV
-        isort spond --check-only --diff --profile black
-        isort tests --check-only --diff --profile black
+        isort . --check-only --diff --profile black
     - name: Lint with black
       # by default: exit with error if the code is not properly formatted; show diffs
       uses: psf/black@stable