Split out linting CI from testing

.github/workflows/lint.yml

@@ -0,0 +1,33 @@
+name: lint
+
+on: [push, pull_request]
+
+jobs:
+  default:
+    runs-on: ${{ matrix.os }}-latest
+    strategy:
+      matrix:
+        os: [ubuntu]
+        python-version: ["3.10"]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - uses: actions/cache@v2
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/pyproject.toml') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install ".[lint]"
+
+      - name: Lint
+        run: pre-commit run --all-files --show-diff-on-failure --color always

.github/workflows/test.yml

@@ -28,10 +28,6 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install ".[test]"
-          pip install ".[lint]"
-
-      - name: Lint
-        run: pre-commit run --all-files --show-diff-on-failure --color always
 
       - name: Test
         run: |