+[testenv:copyright_year]
+whitelist_externals = /bin/bash
+setenv = PYTHONPATH = {toxinidir}
+commands = bash {[tox]checker_dir}/copyright_year.sh
+
+[testenv:doc_verify]
+# Fix all documentaion error before enabling voting.
+whitelist_externals = /bin/bash
+commands = bash -c "bash {[tox]checker_dir}/doc_verify.sh || true"
+
+[testenv:gpl_license]
+whitelist_externals = /bin/bash
+setenv = PYTHONPATH = {toxinidir}
+commands = bash {[tox]checker_dir}/gpl_license.sh