Build/test with multiple Python versions

.github/workflows/build-test-release.yml

@@ -1,4 +1,4 @@
-name: Build & test
+name: Test & release
 
 on:
   push:
@@ -16,10 +16,18 @@ on:
   workflow_dispatch:
 
 jobs:
-  build:
-    name: Build & verify package
+  check:
+    name: Check
     runs-on: ubuntu-latest
 
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version:
+          - "3.10"
+          - "3.11"
+          - "3.12"
+
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -29,9 +37,8 @@ jobs:
         with:
           enable-cache: true
 
-      - name: Configure version
-        if: github.event.action == 'published'
-        run: ./.github/set-version
+      - name: Install Python
+        run: uv python install ${{ matrix.python-version }}
 
       - name: Test
         run: make test
@@ -45,21 +52,43 @@ jobs:
       - name: format
         run: uv run ruff format --diff
 
+      # Just test the build works, we'll upload the one in the next job
+      # instead, if needed.
       - name: Build
         run: make build
 
-      - name: Upload package
+  build:
+    name: Build package
+    needs: check
+    if: github.event.action == 'published'
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v3
+        with:
+          enable-cache: true
+
+      - name: Configure version
         if: github.event.action == 'published'
+        run: ./.github/set-version
+
+      - name: Build
+        run: make build
+
+      - name: Upload package
         uses: actions/upload-artifact@v4
         with:
           name: Packages
           path: dist/*
 
-  release:
-    name: Publish
-    runs-on: ubuntu-latest
-    if: github.event.action == 'published'
+  publish:
+    name: Publish package
     needs: build
+    runs-on: ubuntu-latest
     environment: pypi-release
 
     permissions: