Various improvements to documentation infrastructure

.github/workflows/rtd-link-preview.yml

@@ -0,0 +1,16 @@
+name: Read the Docs Pull Request Preview
+on:
+  pull_request_target:
+    types:
+      - opened
+
+permissions:
+  pull-requests: write
+
+jobs:
+  documentation-links:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: readthedocs/actions/preview@v1
+        with:
+          project-slug: "pymc"

.readthedocs.yaml

@@ -7,9 +7,9 @@ version: 2
 
 # Set the version of Python and other tools you might need
 build:
-  os: ubuntu-20.04
+  os: ubuntu-lts-latest
   tools:
-    python: "3.10"
+    python: "3.11"
     # You can also specify other tool versions:
     # nodejs: "16"
     # rust: "1.55"

docs/source/conf.py

@@ -51,7 +51,9 @@
     "sphinx.ext.autodoc",
     "sphinx.ext.intersphinx",
     "sphinx.ext.mathjax",
+    "sphinx.ext.viewcode",
     "sphinx_autodoc_typehints",
+    "sphinx_copybutton",
 ]
 
 nb_execution_mode = "off"

pyproject.toml

@@ -59,7 +59,7 @@ docs = [
     "sphinx",
     "sphinx-autodoc-typehints",
     "sphinx_autodoc_defaultargs",
-    "sphinx-design",
+    "sphinx-copybutton",
     "sphinx-rtd-theme",
     "statsmodels",
     "sphinxcontrib-bibtex",