readthedocs: use poetry config

This shares required packages to build docs with poetry instead of a
requirements.txt with duplicate info.

Author: dlech

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     steps:
       - run: pipx install poetry
       - uses: actions/checkout@v3
-      - run: poetry install --only=doc
+      - run: poetry install --only=docs
       - run: poetry run make -C docs/ html
   lint:
     runs-on: ubuntu-22.04

.readthedocs.yaml

@@ -5,6 +5,17 @@
 # Required
 version: 2
 
+build:
+  os: "ubuntu-22.04"
+  tools:
+    python: "3.10"
+  jobs:
+    post_create_environment:
+      - pip install poetry
+      - poetry config virtualenvs.create false
+    post_install:
+      - poetry install --only=docs
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
   configuration: docs/conf.py
@@ -13,9 +24,3 @@ sphinx:
 # Optionally build your docs in additional formats such as PDF
 # formats:
 #    - pdf
-
-# Optionally set the version of Python and requirements required to build your docs
-python:
-  version: 3.8
-  install:
-  - requirements: docs/requirements.txt

docs/requirements.txt

@@ -57,9 +57,11 @@ black = "^23"
 flake8 = "^6.0.0"
 isort = "^5.12.0"
 
-[tool.poetry.group.doc.dependencies]
+[tool.poetry.group.docs.dependencies]
 sphinx = "^6.1.3"
 sphinx-rtd-theme = "^1.2.0"
+toml = "^0.10.2"
+typing-extensions = "^4.5.0"
 
 [tool.poetry.group.test.dependencies]
 coverage = {extras = ["toml"], version = "^7.2.3"}