add pkglint test and fix some warnings

Author: dhellmann

.github/workflows/test.yml

@@ -104,6 +104,7 @@ jobs:
         tox-environment:
           - docs
           - style
+          - pkglint
 
     steps:
       - uses: actions/checkout@v3

setup.cfg

@@ -1,9 +1,9 @@
 [metadata]
 name = virtualenvwrapper
 author = Doug Hellmann
-author-email = [email protected]
+author_email = [email protected]
 summary = Enhancements to virtualenv
-description-file = README.txt
+description_file = README.txt
 license = MIT
 classifier =
     Development Status :: 5 - Production/Stable
@@ -21,7 +21,7 @@ classifier =
     Environment :: Console
 keywords =
     virtualenv
-home-page = https://virtualenvwrapper.readthedocs.io/
+home_page = https://virtualenvwrapper.readthedocs.io/
 zip_safe = False
 
 [files]

tox.ini

@@ -35,3 +35,13 @@ deps =
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/docs/requirements.txt
 commands = python setup.py build_sphinx
+
+[testenv:pkglint]
+deps=
+    pbr
+    twine
+    check-python-versions
+commands=
+    python setup.py sdist
+    twine check dist/*.tar.gz
+    check-python-versions --only setup.py,setup.cfg,.github/workflows/test.yml