Split out a "publish" job

.github/workflows/ci.yml

@@ -29,6 +29,10 @@ jobs:
         fetch-depth: 0  # required for setuptools_scm
     - name: Build sdist and temporary wheel
       run: pipx run build
+    - uses: actions/upload-artifact@v2
+      with:
+        name: sdist
+        path: dist/*.tar.gz
 
   test:
     timeout-minutes: 10
@@ -55,32 +59,41 @@ jobs:
     - name: Upload coverage report
       uses: codecov/codecov-action@v1
 
-  publish:
+  wheels:
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    needs: [lint, build, test]
     timeout-minutes: 10
     runs-on: ubuntu-latest
-    needs: [lint, test]
-    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
     steps:
     - uses: actions/checkout@v2
       with:
         fetch-depth: 0  # required for setuptools_scm
     - name: Build wheels
       uses: pypa/cibuildwheel@v2.1.2
-      with:
-        output-dir: dist/
       env:
         CIBW_BUILD: "cp3*-manylinux_x86_64"
         CIBW_MANYLINUX_X86_64_IMAGE: manylinux2010
         CIBW_ENVIRONMENT: "CFLAGS=-g0"
         CIBW_TEST_COMMAND: "cutadapt --help"
-    - name: Set up Python
-      uses: actions/setup-python@v2
+    - uses: actions/upload-artifact@v2
+      with:
+        name: wheels
+        path: wheelhouse/*.whl
+
+  publish:
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    needs: [build, wheels]
+    timeout-minutes: 10
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/download-artifact@v2
+      with:
+        name: sdist
+        path: dist/
+    - uses: actions/download-artifact@v2
       with:
-        python-version: 3.7
-    - name: Make sdist
-      run: |
-        pipx run build --sdist
-        ls -l dist/
+        name: wheels
+        path: dist/
     - name: Publish dev release to test PyPI
       if: contains(github.ref, '.dev')
       uses: pypa/gh-action-pypi-publish@v1.4.2