🔧 Set canonical URL from the Read the Docs Domain

Author: veit

docs/conf.py

@@ -4,6 +4,15 @@
 # https://www.sphinx-doc.org/en/master/usage/configuration.html
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
+import os
+
+# Set canonical URL from the Read the Docs Domain
+html_baseurl = os.environ.get("READTHEDOCS_CANONICAL_URL", "")
+
+html_context = {}
+# Tell Jinja2 templates the build is running on Read the Docs
+if os.environ.get("READTHEDOCS", "") == "True":
+    html_context["READTHEDOCS"] = True
 
 project = "python.berlin"
 copyright = "2023, Berlin Python User Groups"