Cleanup py27 support

This repo is now testing only with Python 3, so let's make
a few cleanups:
- Remove python 2.7 stanza from setup.py
- Add requires on python >= 3.6 to setup.cfg so that pypi and pip
  know about the requirement
- Remove obsolete sections from setup.cfg
- Update classifiers
- Update requirements, no need for python_version anymore
- Switch to using sphinx-build with apidoc extension
- Use newer openstackdocstheme version
- Remove Babel requirement, this is not needed.

Change-Id: I4176d8002d45449171aa5f7a7caef196ab7900d0

doc/source/conf.py

@@ -5,7 +5,7 @@
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ['sphinx.ext.autodoc',
+extensions = ['sphinxcontrib.apidoc',
               'sphinx.ext.viewcode',
               'sphinxcontrib.rsvgconverter',
               'oslo_policy.sphinxext',
@@ -120,3 +120,13 @@ latex_documents = [
 # -- Options for seqdiag ------------------------------------------------------
 
 seqdiag_html_image_format = "SVG"
+
+# -- sphinxcontrib.apidoc configuration --------------------------------------
+
+apidoc_module_dir = '../../ironic_inspector'
+apidoc_output_dir = 'contributor/api'
+apidoc_excluded_paths = [
+    'migrations',
+    'test',
+    'common/i18n*'
+]

doc/source/contributor/index.rst

@@ -8,7 +8,7 @@ Python API
 .. toctree::
   :maxdepth: 1
 
-  api/autoindex
+  api/modules
 
 Ironic Inspector CI
 ~~~~~~~~~~~~~~~~~~~

lower-constraints.txt

@@ -18,7 +18,7 @@ keystoneauth1==3.14.0
 keystonemiddleware==4.18.0
 mock==3.0.0
 netaddr==0.7.18
-openstackdocstheme==1.20.0
+openstackdocstheme==1.31.2
 openstacksdk==0.40.0
 os-api-ref==1.4.0
 oslo.concurrency==3.26.0
@@ -41,6 +41,7 @@ pytz==2013.6
 reno==2.5.0
 retrying==1.2.3
 sphinx==1.6.2
+sphinxcontrib-apidoc==0.2.0
 sphinxcontrib-svg2pdfconverter==0.1.0
 SQLAlchemy==1.0.10
 stestr==1.0.0

setup.cfg

@@ -6,6 +6,7 @@ author = OpenStack
 author-email = openstack-discuss@lists.openstack.org
 home-page = https://docs.openstack.org/ironic-inspector/latest/
 license = Apache-2
+python-requires = >=3.6
 classifier =
     Environment :: Console
     Environment :: OpenStack
@@ -14,6 +15,8 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: OS Independent
     Programming Language :: Python
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
@@ -95,17 +98,3 @@ input_file = ironic_inspector/locale/ironic_inspector.pot
 keywords = _ gettext ngettext l_ lazy_gettext
 mapping_file = babel.cfg
 output_file = ironic_inspector/locale/ironic_inspector.pot
-
-[build_sphinx]
-all_files = 1
-build-dir = doc/build
-source-dir = doc/source
-warning-is-error = 1
-
-[pbr]
-autodoc_index_modules = True
-autodoc_exclude_modules =
-    ironic_inspector.migrations.*
-    ironic_inspector.test.*
-    ironic.common.i18n
-api_doc_dir = contributor/api

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

@@ -1,15 +1,16 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-Babel!=2.4.0,>=2.3.4 # BSD
+
 bandit!=1.6.0,>=1.1.0,<2.0.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0
 flake8-import-order>=0.13 # LGPLv3
 hacking>=3.0.0,<3.1.0 # Apache-2.0
-sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4' # BSD
+sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
 sphinxcontrib-svg2pdfconverter>=0.1.0 # BSD
-openstackdocstheme>=1.20.0 # Apache-2.0
+sphinxcontrib-apidoc>=0.2.0  # BSD
+openstackdocstheme>=1.31.2 # Apache-2.0
 os-api-ref>=1.4.0 # Apache-2.0
 pymemcache!=1.3.0,>=1.2.9 # Apache 2.0 License
 stestr>=1.0.0 # Apache-2.0

tox.ini

@@ -83,7 +83,7 @@ setenv = PYTHONHASHSEED=0
 sitepackages = False
 deps = -r{toxinidir}/test-requirements.txt
 commands =
-  python setup.py build_sphinx
+  sphinx-build -W -b html doc/source doc/build/html
 
 [testenv:pdf-docs]
 whitelist_externals = make