Debug tox environment

tox.ini

@@ -59,13 +59,20 @@ allowlist_externals =
                       sed
                       mkdir
                       chmod
+                      pwd
+		      ls
+		      echo
 
 usedevelop = true
 commands_pre =
          mkdir -p {toxinidir}/reports/coverage
          chmod 777 {toxinidir}/reports/coverage
 
 commands =
+         {unit,integration,functional}: pwd
+         {unit,integration,functional}: ls
+         {unit,integration,functional}: python3 -c "import sys; print('PYTHONPATH:', sys.path)"
+
          unit: pytest -o junit_suite_name="{envname} unit tests" --cov-config {toxinidir}/tests/.coveragerc --cov={toxinidir}/python --cov-report=xml:reports/{envname}/coverage.xml --junitxml=reports/{envname}/unit-results.xml --verbose {posargs:tests/unittests}
 
          {integration,functional}: python setup.py build_sass