Fixup CI

- Share sdist action
- Fix gathering uploaded artifacts

.github/workflows/build-wheels.yml

@@ -7,3 +7,16 @@ jobs:
     uses: ./.github/workflows/run-cibuildwheel.yml
     with:
       prerelease-pythons: true
+
+  build_sdist:
+    uses: ./.github/workflows/run-sdist.yml
+
+  check_build:
+    needs: [build_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          path: dist
+          merge-multiple: true
+      - run: ls -lR dist

.github/workflows/release-wheels.yml

@@ -1,7 +1,6 @@
 name: Release Wheels
 
 on:
-  pull_request:
   release:
     types:
       - published
@@ -13,34 +12,19 @@ jobs:
       fail-fast: true
 
   build_sdist:
-    name: Build source distribution
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: true
-      - uses: actions/setup-python@v5
-        name: Install Python
-        with:
-          check-latest: true
-          python-version: '3.13'
-      - name: Install setuptools
-        run: python -m pip install -U setuptools
-      - name: Build sdist
-        run: python setup.py sdist
-      - uses: actions/upload-artifact@v4
-        with:
-          name: sdist
-          path: dist/*.tar.gz
+    uses: ./.github/workflows/run-sdist.yml
 
   upload_pypi:
     needs: [build_wheels, build_sdist]
+    if: github.event_name == 'release' && github.event.action == 'published'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/download-artifact@v4
+        with:
+          path: dist
+          merge-multiple: true
       - run: ls -lR dist
       - name: Upload to PyPI
-        if: github.event_name == 'release' && github.event.action == 'published'
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           user: __token__

.github/workflows/run-sdist.yml

@@ -0,0 +1,24 @@
+on:
+  workflow_call:
+
+jobs:
+  build_sdist:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+      - uses: actions/setup-python@v5
+        name: Install Python
+        with:
+          check-latest: true
+          python-version: '3.13'
+      - name: Install setuptools
+        run: python -m pip install -U setuptools
+      - name: Build sdist
+        run: python setup.py sdist
+      - uses: actions/upload-artifact@v4
+        with:
+          name: sdist
+          path: dist/*.tar.gz