Move release job to separate workflow

Author: mattt

.github/workflows/ci.yaml

@@ -2,25 +2,29 @@ name: CI
 
 on:
   push:
-    branches: [ "main" ]
+    branches: ["main"]
+
   pull_request:
-    branches: [ "main" ]
+    branches: ["main"]
 
 jobs:
   test:
-    name: "Test Python ${{ matrix.python-version }}"
     runs-on: ubuntu-20.04
+
+    name: "Test Python ${{ matrix.python-version }}"
+
     strategy:
       fail-fast: false
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11"]
+
     defaults:
       run:
         shell: bash
+
     steps:
       - uses: actions/checkout@v3
-      - name: Setup Python
-        uses: actions/setup-python@v3
+      - uses: actions/setup-python@v3
         with:
           python-version: ${{ matrix.python-version }}
           cache: "pip"
@@ -36,31 +40,3 @@ jobs:
           python -m black --check .
       - name: Test
         run: python -m pytest
-
-  release:
-    name: "Release"
-    runs-on: ubuntu-20.04
-    steps:
-      - uses: actions/checkout@master
-      - name: Setup Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: "3.10"
-      - name: Install pypa/build
-        run: >-
-          python -m
-          pip install
-          build
-          --user
-      - name: Build a package
-        run: >-
-          python -m
-          build
-          --sdist
-          --outdir dist/
-          .
-      - name: Publish distribution 📦 to PyPI
-        if: startsWith(github.ref, 'refs/tags')
-        uses: pypa/gh-action-pypi-publish@master
-        with:
-          password: ${{ secrets.PYPI_API_TOKEN }}

.github/workflows/release.yaml

@@ -0,0 +1,34 @@
+name: Release
+
+on:
+  push:
+    tags: ["*"]
+
+jobs:
+  release:
+    runs-on: ubuntu-20.04
+
+    name: "Publish to PyPI"
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v3
+        with:
+          python-version: "3.10"
+      - name: Install pypa/build
+        run: >-
+          python -m
+          pip install
+          build
+          --user
+      - name: Build a package
+        run: >-
+          python -m
+          build
+          --sdist
+          --outdir dist/
+          .
+      - name: Publish distribution 📦 to PyPI
+        uses: pypa/gh-action-pypi-publish@master
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}