Split the test and doc building into separate Actions.

This allows us to propagate docfixes more quickly. We also add ccache
for faster doc builds and PR tests where we don't need the full tox
checks from a clean slate.

.github/workflows/build-docs.yml

@@ -0,0 +1,47 @@
+name: Build documentation
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  test:
+    name: Build docs
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: Set up Python 3.9
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+          cache: 'pip'
+
+      - name: Set up ccache
+        uses: hendrikmuhs/[email protected]
+
+      - name: Install Python dependencies
+        run: |
+          python -m pip install --upgrade pip setuptools
+          DEPENDENCIES=$(python -c 'from setuptools.config.setupcfg import read_configuration as c; a = c("setup.cfg"); print(" ".join(a["options"]["install_requires"][1:]))')
+          pip install ${DEPENDENCIES}
+          pip install sphinx myst-parser[linkify] furo
+
+      # Note that doc building requires the inplace shared library.
+      - name: Build docs
+        run: |
+          CC="ccache gcc" python setup.py build_ext --inplace
+          sphinx-build --color -b html -d docs/doctrees docs docs/_build/html
+          touch ./docs/_build/html/.nojekyll
+
+      - name: GH Pages Deployment
+        if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/')
+        uses: JamesIves/[email protected]
+        with:
+          branch: gh-pages # The branch the action should deploy to.
+          folder: ./docs/_build/html
+          clean: true # Automatically remove deleted files from the deploy branch

.github/workflows/pypi-test.yml

@@ -21,37 +21,32 @@ jobs:
         with:
           submodules: true
 
-      - name: "Install dependencies"
-        run: |
-          sudo apt-get install zlib1g-dev
-
       - name: Set up Python 3.9
         uses: actions/setup-python@v2
         with:
           python-version: 3.9
           cache: 'pip'
 
-      - name: Install dependencies
+      - name: Install python dependencies
         run: |
-          python -m pip install --upgrade pip
-          pip install pytest tox numpy mattress
+          python -m pip install --upgrade pip setuptools
+          DEPENDENCIES=$(python -c 'from setuptools.config.setupcfg import read_configuration as c; a = c("setup.cfg"); print(" ".join(a["options"]["install_requires"][1:] + a["options"]["extras_require"]["testing"][1:]))')
+          pip install ${DEPENDENCIES}
 
       - name: Test with tox
+        if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags/')
         run: tox
 
-      - name: Build docs
-        if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags')
-        run: |
-          tox -e docs
-          touch ./docs/_build/html/.nojekyll
+      # In a PR, we don't need the full clean test.
+      - name: Set up ccache
+        if: github.ref != 'refs/heads/master' && !startsWith(github.ref, 'refs/tags')
+        uses: hendrikmuhs/[email protected]
 
-      - name: GH Pages Deployment
-        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
-        uses: JamesIves/[email protected]
-        with:
-          branch: gh-pages # The branch the action should deploy to.
-          folder: ./docs/_build/html
-          clean: true # Automatically remove deleted files from the deploy branch
+      - name: Quickly build and test
+        if: github.ref != 'refs/heads/master' && !startsWith(github.ref, 'refs/tags')
+        run: |
+          CC="ccache gcc" python setup.py install
+          pytest
 
   build_wheels:
     name: Build wheels on ${{ matrix.os }}