REF: py38, sphinx>=1.7.0, try/except add_config_value("author")

setup.py

@@ -21,7 +21,7 @@
 Tinkerer is also highly customizable through Sphinx extensions.
 '''
 
-requires = ["Jinja2>=2.3", "Sphinx==1.7.1", "Babel>=1.3", "pyquery>=1.2.8"]
+requires = ["Jinja2>=2.3", "Sphinx>=1.7.0", "Babel>=1.3", "pyquery>=1.2.8"]
 
 test_requires = ['nose', 'tox']
 

tinkerer/ext/blog.py

@@ -8,6 +8,7 @@
     CONTRIBUTORS file)
     :license: FreeBSD, see LICENSE file
 '''
+from sphinx.errors import ExtensionError
 from tinkerer.ext import (aggregator, author, filing, html5, metadata, patch,
                           readmore, rss, uistr)
 import gettext
@@ -123,7 +124,10 @@ def setup(app):
     # new config values
     app.add_config_value("tagline", "My blog", True)
     app.add_config_value("description", "My blog", True)
-    app.add_config_value("author", "Winston Smith", True)
+    try:
+        app.add_config_value("author", "Winston Smith", True)  # Sphinx 1.7.1
+    except ExtensionError as e:
+        pass
     app.add_config_value("rss_service", None, True)
     app.add_config_value("rss_generate_full_posts", False, True)
     app.add_config_value("website", "http://127.0.0.1/blog/html/", True)

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py36
+envlist = py38
 
 [testenv]
 deps =
@@ -17,5 +17,5 @@ commands = flake8 tinkerer tinkertest
 deps =
   nose
   coverage
-basepython=python3.6
+basepython=python3.8
 commands = nosetests --with-cover --cover-package=tinkerer --cover-inclusive {posargs}