Add .readthedocs.yml (#219)

Author: Gallaecio

.readthedocs.yml

@@ -0,0 +1,15 @@
+version: 2
+formats: all
+sphinx:
+  configuration: docs/conf.py
+  fail_on_warning: true
+build:
+  os: ubuntu-22.04
+  tools:
+    # For available versions, see:
+    # https://docs.readthedocs.io/en/stable/config-file/v2.html#build-tools-python
+    python: "3.12"  # Keep in sync with .github/workflows/build.yml
+python:
+  install:
+    - requirements: docs/requirements.txt
+    - path: .

docs/conf.py

@@ -96,7 +96,7 @@
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'default'
+html_theme = "sphinx_rtd_theme"
 
 # 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