DOC: update RTD config file

mgeier · mgeier · commit 1fe9d26c7d5e · 2023-09-02T14:42:47.000+02:00
diff --git a/.readthedocs.yml b/.readthedocs.yml
@@ -3,9 +3,11 @@ build:
   os: ubuntu-22.04
   tools:
     python: "3"
+  jobs:
+    post_checkout:
+      - git fetch --unshallow || true
 python:
   install:
     - requirements: doc/requirements.txt
-  system_packages: true
 formats:
   - pdf
