Try building in CI using uv

.github/workflows/pr-receive.yaml

@@ -1,9 +1,9 @@
 name: "Receive Pull Request"
 
-on:
-  pull_request:
-    types:
-      [opened, synchronize, reopened]
+# on:
+#   pull_request:
+#     types:
+#       [opened, synchronize, reopened]
 
 concurrency:
   group: ${{ github.ref }}

.github/workflows/sphinx.yml

@@ -12,6 +12,7 @@ on: [push, pull_request]
 
 env:
   DEFAULT_BRANCH: "sphinx"
+  SPHINXBUILD: "uv run sphinx-build"
   # If these SPHINXOPTS are enabled, then be strict about the
   # builds and fail on any warnings.
   #SPHINXOPTS: "-W --keep-going -T"
@@ -35,20 +36,19 @@ jobs:
           fetch-depth: 0
           lfs: true
 
-      # https://github.com/marketplace/actions/setup-python
+      # https://github.com/astral-sh/setup-uv
       # ^-- This gives info on matrix testing.
       - name: Install Python
-        uses: actions/setup-python@v4
+        uses: astral-sh/setup-uv@v5
         with:
           python-version: '3.11'
-          cache: 'pip'
+          enable-cache: true
 
       # https://docs.github.com/en/actions/guides/building-and-testing-python#installing-dependencies
       # ^-- This gives info on installing dependencies with pip
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements.txt
+          uv pip install -r requirements.txt
 
         # Debug
       - name: Debugging information
@@ -70,8 +70,8 @@ jobs:
           git branch -a
           git remote -v
           python -V
-          pip list --not-required
-          pip list
+          uv pip list
+          uv pip check
 
 
       # Build
@@ -100,7 +100,7 @@ jobs:
       - name: Generate PDF
         if: ${{ env.GENERATE_PDF == 'true' }}
         run: |
-          pip install https://github.com/rkdarst/sphinx_pyppeteer_builder/archive/refs/heads/main.zip
+          uv pip install https://github.com/rkdarst/sphinx_pyppeteer_builder/archive/refs/heads/main.zip
           make pyppeteer
           mv _build/pyppeteer/*.pdf _build/dirhtml/${PDF_FILENAME}