Fix problems with new readthedocs proactively (see pipedag)

.readthedocs.yaml

@@ -10,9 +10,12 @@ build:
   jobs:
     post_create_environment:
       - pip install poetry
-      - poetry config virtualenvs.create false
     post_install:
-      - poetry install --with docs
+      # Install dependencies with 'docs' dependency group
+      # https://python-poetry.org/docs/managing-dependencies/#dependency-groups
+      # VIRTUAL_ENV needs to be set manually for now.
+      # See https://github.com/readthedocs/readthedocs.org/pull/11152/
+      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH poetry install --with docs
 
 sphinx:
   builder: html

docs/source/conf.py

@@ -12,7 +12,7 @@
 from sphinx.ext.napoleon import GoogleDocstring
 
 
-sys.path.insert(0, os.path.abspath("../.."))
+sys.path.insert(0, os.path.abspath("../../src"))
 os.environ["SPHINX_BUILD"] = "1"
 
 _mod = importlib.import_module("pydiverse.transform")