Maintenance: fix GitHub CI

Author: penguinolog

.github/workflows/pythonpackage.yml

@@ -24,7 +24,7 @@ jobs:
           pip install --upgrade ruff
       - name: Lint with ruff
         run: |
-          ruff . --format github
+          ruff . --output-format github
 
   PyLint:
     runs-on: ubuntu-latest
@@ -81,28 +81,9 @@ jobs:
       - name: Check code style with black
         run: |
           black --check exec_helpers
-  Metadata:
-    name: Validate metadata
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: '3.x'
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install --upgrade twine build
-      - name: Build package
-        run: |
-          python -m build -s
-      - name: Validate metadata
-        run: |
-          twine check dist/*
 
   Test:
-    needs: [PEP8, PyLint, MyPy, Black, Metadata]  # isort is broken
+    needs: [PEP8, PyLint, MyPy, Black]  # isort is broken
     runs-on: ${{ matrix.os }}
     strategy:
       max-parallel: 6
@@ -151,7 +132,6 @@ jobs:
 
   Build:
     needs: [ Test ]
-    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -171,9 +151,35 @@ jobs:
       - uses: actions/upload-artifact@v3
         with:
           path: dist/*
+          name: wheels
+
+  Metadata:
+    name: Validate metadata
+    runs-on: ubuntu-latest
+    needs: [ Build ]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.x'
+          cache: 'pip'
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install --upgrade twine
+      - uses: actions/download-artifact@v3
+        with:
+          # unpacks default artifact into dist/
+          # if `name: wheels` is omitted, the action will create extra parent dir
+          name: wheels
+          path: dist
+      - name: Validate metadata
+        run: |
+          twine check dist/*
 
   Deploy:
-      needs: [Build]
+      needs: [Build, Metadata]
       if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
       runs-on: ubuntu-latest
       environment:
@@ -186,7 +192,7 @@ jobs:
           with:
             # unpacks default artifact into dist/
             # if `name: artifact` is omitted, the action will create extra parent dir
-            name: artifact
+            name: wheels
             path: dist
         - name: Publish package distributions to PyPI
           uses: pypa/gh-action-pypi-publish@release/v1