Fix RTD build

Author: hynek

.github/workflows/ci.yml

@@ -177,7 +177,7 @@ jobs:
         run: uvx nox --sessions mypy_pkg
 
   docs:
-    name: Build docs & run doctests
+    name: Run doctests
     runs-on: ubuntu-latest
     needs: build-package
     steps:
@@ -190,11 +190,11 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           # Keep in sync with .readthedocs.yaml
-          python-version: "3.12"
+          python-version: "3.13"
       - uses: hynek/setup-cached-uv@v2
 
       - name: Prepare & run Nox
-        run: uvx nox --session docs
+        run: uvx nox --session docs -- doctest
 
   install-dev:
     name: Verify dev env

.readthedocs.yaml

@@ -4,16 +4,17 @@ version: 2
 build:
   os: ubuntu-lts-latest
   tools:
-    # Keep version in sync with ci.yml/docs.
-    python: "3.12"
+    # Keep version in sync with tox.ini/docs and ci.yml/docs.
+    python: "3.13"
   jobs:
-    # Need the tags to calculate the version
-    post_checkout:
+    create_environment:
+      # Need the tags to calculate the version (sometimes).
       - git fetch --tags
 
-python:
-  install:
-    - method: pip
-      path: .
-      extra_requirements:
-        - docs
+      - asdf plugin add uv
+      - asdf install uv latest
+      - asdf global uv latest
+
+    build:
+      html:
+        - uvx nox -e docs -- html

noxfile.py

@@ -132,6 +132,8 @@ def docs(session: nox.Session) -> None:
     session.install(".[docs]")
     cmds = session.posargs or ["html", "doctest"]
 
+    dest = os.environ.get("READTHEDOCS_OUTPUT", "docs/_build/html")
+
     for cmd in cmds:
         session.run(
             "python", "-Im", "sphinx",
@@ -142,5 +144,5 @@ def docs(session: nox.Session) -> None:
             "-D", "language=en",
             "-n",
             "docs",
-            "docs/_build/html",
+            dest,
         )  # fmt: skip

pyproject.toml

@@ -169,6 +169,7 @@ line-length = 79
 select = ["ALL"]
 ignore = [
   "A001",    # shadowing is fine
+  "A005",    # shadowing typing is fine
   "ANN",     # Mypy is better at this
   "ARG001",  # unused arguments are normal when implementing interfaces
   "COM",     # Formatter takes care of our commas