Provide ReadTheDocs configuration (#275) (#240)

RTD has been requiring a configuration file for a while, this change
should resolve the currently ongoing documentation build failures.

.readthedocs.yaml

@@ -0,0 +1,22 @@
+# Read the Docs configuration file for Sphinx projects
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+version: 2
+
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.12"
+
+sphinx:
+  configuration: docs/conf.py
+  # TODO: Enable this when we get rid of the existing warnings
+  # fail_on_warning: true
+
+python:
+  install:
+    - method: pip
+      path: .
+# TODO: pin the development dependency versions
+# See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
+#     - requirements: docs/requirements.txt

MANIFEST.in

@@ -11,3 +11,4 @@ recursive-include docs *.html
 recursive-include docs *.py
 recursive-include docs *.rst
 recursive-include docs Makefile
+exclude .readthedocs.yaml