update sphinx theme

Author: admercs

.github/workflows/test_docs.yml

@@ -22,7 +22,7 @@ jobs:
           source ./.env/bin/activate
           python3 -m pip install --upgrade pip
           pip install mkdocs mkdocs-material pymdown-extensions mkdocstrings[python]
-          pip install sphinx sphinx_rtd_theme sphinx-immaterial numpy msgpack-rpc-python
+          pip install sphinx sphinx-immaterial numpy msgpack-rpc-python
 
       - name: "Build API documentation: Sphinx Immaterial"
         shell: bash

python/docs/conf.py

@@ -42,6 +42,7 @@
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
+    "sphinx_immaterial",
     "sphinx.ext.autodoc",
     "sphinx.ext.autosummary",
     "sphinx.ext.autosectionlabel",
@@ -52,7 +53,6 @@
     "sphinx.ext.coverage",
     "sphinx.ext.napoleon",
     "sphinx.ext.viewcode",
-    "sphinx_rtd_theme",
 ]
 
 autodoc_default_flags = ["members"]
@@ -77,7 +77,7 @@
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = "en"
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
@@ -94,7 +94,7 @@
 # a list of builtin themes.
 #
 # html_theme = 'alabaster'
-html_theme = "sphinx_rtd_theme"
+html_theme = "sphinx_immaterial"
 
 # 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