Merge pull request #11179 from MisRob/docs-build

Update ReadTheDocs builds configuration

.readthedocs.yaml

@@ -0,0 +1,11 @@
+version: 2
+formats: all
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+sphinx:
+  configuration: docs/conf.py
+python:
+  install:
+  - requirements: requirements/docs.txt

docs/conf.py

@@ -9,6 +9,7 @@
 from datetime import datetime
 
 import django
+import sphinx_rtd_theme
 from django.utils.encoding import force_text
 from django.utils.html import strip_tags
 
@@ -135,15 +136,9 @@ def process_docstring(app, what, name, obj, options, lines):
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = "default"
-on_rtd = os.environ.get("READTHEDOCS", None) == "True"
 
-
-if not on_rtd:  # only import and set the theme if we're building docs locally
-    import sphinx_rtd_theme
-
-    html_theme = "sphinx_rtd_theme"
-    html_theme_path = [".", sphinx_rtd_theme.get_html_theme_path()]
+html_theme = "sphinx_rtd_theme"
+html_theme_path = [".", sphinx_rtd_theme.get_html_theme_path()]
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the