Add readthedocs.yaml to install apt packages

Author: mirceaulinic

.readthedocs.yaml

@@ -0,0 +1,29 @@
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-20.04
+  tools:
+    python: "3.9"
+  apt_packages:
+    - python3-dev
+    - python3-cffi
+    - libffi-dev
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+   configuration: docs/conf.py
+
+formats:
+  - pdf
+
+# Optionally declare the Python requirements required to build your docs
+python:
+   install:
+     - requirements: docs/requirements.txt
+   system_packages: true