configure rtd to also use pixi

Author: keewis

.readthedocs.yaml

@@ -2,21 +2,18 @@ version: 2
 
 build:
   os: ubuntu-22.04
-  tools:
-    python: "3.11"
   jobs:
     post_checkout:
       - (git --no-pager log --pretty="tformat:%s" -1 | grep -vqF "[skip-rtd]") || exit 183
       - git fetch --unshallow || true
+    create_environment:
+      - asdf plugin add pixi
+      - asdf install pixi latest
+      - asdf global pixi latest
     pre_install:
       - git update-index --assume-unchanged docs/conf.py
-
-python:
-  install:
-    - requirements: docs/requirements.txt
-    - method: pip
-      path: .
-
-sphinx:
-  configuration: docs/conf.py
-  fail_on_warning: true
+    install:
+      - pixi install -e docs
+    build:
+      html:
+        - pixi run -e docs build-docs-rtd

pyproject.toml

@@ -171,6 +171,7 @@ python = "3.13.*"
 [tool.pixi.feature.docs.tasks]
 build-docs = { cmd = "rm -rf generated/; python -m sphinx -b html -w warnings.log -W -Tn -j auto . _build", cwd = "docs" }
 autobuild-docs = { cmd = "sphinx-autobuild -b html -w warnings.log -W -Tn -j auto . _build", cwd = "docs" }
+build-docs-rtd = { cmd = "python -m sphinx -b html -W -T -j auto . $READTHEDOCS_OUTPUT/html", cwd = "docs" }
 
 [tool.pixi.environments]
 tests = ["tests"]