doc: override html theme for old version

Change-Id: Id949ca8c1d81c0eaa8b7d2d388fee8e6a80f756b

README.rst

@@ -2,7 +2,7 @@
  Gnocchi - Metric as a Service
 ===============================
 
-.. image:: doc/source/gnocchi-logo.png
+.. image:: doc/source/_static/gnocchi-logo.png
 
 Gnocchi is a multi-tenant timeseries, metrics and resources database. It
 provides an `HTTP REST`_ interface to create and manipulate the data. It is

doc/source/conf.py

@@ -184,3 +184,12 @@ scv_banner_greatest_tag = True
 scv_priority = 'branches'
 scv_whitelist_branches = ('master', '^stable/(2\.1|2\.2|[3-9]\.)')
 scv_whitelist_tags = ("^[2-9]\.",)
+
+here = os.path.dirname(os.path.realpath(__file__))
+html_static_path_abs = ",".join([os.path.join(here, p) for p in html_static_path])
+# Override some conf for old version
+scv_overflow = ("-D", "html_theme=sphinx_rtd_theme",
+                "-D", "html_theme_options.logo_only=True",
+                "-D", "html_logo=gnocchi-logo.png",
+                "-D", "html_favicon=gnocchi-icon.png",
+                "-D", "html_static_path=%s" % html_static_path_abs)

tox.ini

@@ -134,7 +134,6 @@ deps = .[file,postgresql,test,doc]
        pytimeparse
        retrying
 # for 3.x doc
-       sphinx_rtd_theme
        oslosphinx
 commands =
     pifpaf -g GNOCCHI_INDEXER_URL run postgresql -- sphinx-versioning build doc/source doc/build/html