Switch to newer openstackdocstheme version

Switch to openstackdocstheme 2.2.1 version. Using
this version will allow especially:
* Linking from HTML to PDF document
* Allow parallel building of documents
* Fix some rendering problems

Update Sphinx version as well.

Disable openstackdocs_auto_version to not auto-version the documents.

Disable openstackdocs_auto_name to use 'project' variable as name.

Change pygments_style to 'native' since old theme version always used
'native' and the theme now respects the setting and using 'sphinx' can
lead to some strange rendering.

openstackdocstheme renames some variables, so follow the renames
before the next release removes them. A couple of variables are also
not needed anymore, remove them.

See also
http://lists.openstack.org/pipermail/openstack-discuss/2020-May/014971.html

Remove python 2.7 stanza from setup.py, cleanup tox.ini for python3,
update hacking version and fix problem found.

Change-Id: Ic0721e60f6583abb52bb665fbf113c8017318e2c

doc/requirements.txt

@@ -2,5 +2,5 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 # needed for doc build
-sphinx>=1.6.2 # BSD
-openstackdocstheme>=1.25.1  # Apache-2.0
+sphinx>=2.0.0,!=2.1.0 # BSD
+openstackdocstheme>=2.2.1 # Apache-2.0

doc/source/conf.py

@@ -57,6 +57,15 @@ master_doc = 'index'
 project = u'OpenStack Election'
 copyright = u'2015, OpenStack'
 
+# openstackdocstheme options
+openstackdocs_repo_name = 'openstack/election'
+openstackdocs_auto_name = False
+openstackdocs_auto_version = False
+openstackdocs_bug_project = ''
+openstackdocs_bug_tag = ''
+
+version = ''
+release = ''
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #language = None
@@ -89,7 +98,7 @@ add_module_names = False
 show_authors = False
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = 'native'
 
 # A list of ignored prefixes for module index sorting.
 modindex_common_prefix = []

openstack_election/cmds/ci_check_all_candidate_files.py

@@ -85,10 +85,10 @@ def find_modified_candidate_files():
         ['git', 'diff', '--name-only', '--pretty=format:', 'HEAD^']
     ).decode('utf-8')
     filenames = [
-        l.strip()
-        for l in results.splitlines()
-        if (l.startswith(utils.CANDIDATE_PATH + '/') and
-            not l.endswith('.placeholder'))
+        li.strip()
+        for li in results.splitlines()
+        if (li.startswith(utils.CANDIDATE_PATH + '/') and
+            not li.endswith('.placeholder'))
     ]
     return filenames
 

setup.py

@@ -13,17 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools
 
-# In python < 2.7.4, a lazy loading of package `pbr` will break
-# setuptools if some other modules registered functions in `atexit`.
-# solution from: http://bugs.python.org/issue15881#msg170215
-try:
-    import multiprocessing  # noqa
-except ImportError:
-    pass
-
 setuptools.setup(
     setup_requires=['pbr>=2.0.0'],
     pbr=True)

test-requirements.txt

@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 # needed for doc build
-hacking>=2.0,<2.1 # Apache-2.0
+hacking>=3.1.0,<3.2.0 # Apache-2.0
 yamllint
 mock>=2.0.0 # BSD
 oslotest>=1.10.0 # Apache-2.0

tox.ini

@@ -7,7 +7,6 @@ ignore_basepython_conflict=true
 [testenv]
 basepython = python3
 usedevelop = True
-install_command = pip install -U {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
@@ -25,7 +24,7 @@ commands = {posargs}
 
 [testenv:docs]
 deps =
-  -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -v -W -b html -d doc/build/doctrees doc/source doc/build/html