From c30b79cb6e1de99ec52e030c1266118325a7bdd5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B8rgen=20Kvalsvik?= <j@lambda.is>
Date: Thu, 17 Aug 2023 22:44:18 +0900
Subject: [PATCH] Set build.os on readthedocs
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Readthedocs now requires an explicit image [1] to build.

> We are announcing the deprecation of build.image config key in favor
> of build.os. Read the Docs will start requiring a build.os config key
> for all projects in order to build documentation successfully. We will
> start failing builds for projects not using “build.os” in their config
> file on October 16, 2023.

[1] https://blog.readthedocs.com/use-build-os-config/
---
 .readthedocs.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 05be549..95726db 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -5,6 +5,11 @@
 # Required
 version: 2
 
+build:
+  os: "ubuntu-22.04"
+  tools:
+    python: "3.9"
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
    configuration: docs/source/conf.py