doc: Update and simplify RTD config

Author: effigies

.readthedocs.yaml

@@ -10,12 +10,10 @@ build:
       - asdf plugin add uv
       - asdf install uv latest
       - asdf global uv latest
-      # Turn `python -m virtualenv` into `python -c pass`
-      - truncate --size 0 $( dirname $( uv python find ) )/../lib/python3*/site-packages/virtualenv/__main__.py
-    post_create_environment:
+    create_environment:
       - uv venv $READTHEDOCS_VIRTUALENV_PATH
-      # Turn `python -m pip` into `python -c pass`
-      - truncate --size 0 $( ls -d $READTHEDOCS_VIRTUALENV_PATH/lib/python3* )/site-packages/pip.py
-    post_install:
-      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH uv pip install --cache-dir $READTHEDOCS_VIRTUALENV_PATH/../../uv_cache .[niftiext]
-      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH uv pip install --cache-dir $READTHEDOCS_VIRTUALENV_PATH/../../uv_cache -r docs/requirements.txt
+    install:
+      - VIRTUAL_ENV=$READTHEDOCS_VIRTUALENV_PATH uv pip install --cache-dir $READTHEDOCS_VIRTUALENV_PATH/../../uv_cache .[niftiext] -r docs/requirements.txt
+
+sphinx:
+  configuration: docs/conf.py