Add caching for pre-commit on CI

.github/actions/pre-commit/action.yml

@@ -0,0 +1,22 @@
+name: run pre-commit checks
+description: run all pre-commit managed checks
+inputs:
+  pre-commit-home:
+    description: cache dir to use
+    required: true
+    default: ${{ github.workspace }}/.pre-commit-cache
+runs:
+  using: "composite"
+  steps:
+    - id: python-interpreter-hash
+      shell: bash
+      run: echo "HASH=$(python -VV | sha256sum | cut -d' ' -f1)" >> $GITHUB_OUTPUT
+    - uses: actions/cache@v4
+      with:
+        path: ${{ inputs.pre-commit-home }}
+        key: pre-commit|${{ steps.python-interpreter-hash.outputs.HASH }}|${{ hashFiles('.pre-commit-config.yaml') }}
+    - name: Run commit checks
+      shell: bash
+      env:
+        PRE_COMMIT_HOME: ${{ inputs.pre-commit-home }}
+      run: poetry run pre-commit run -a

.github/workflows/pr.yml

@@ -5,12 +5,19 @@ on:
     branches: ["main"]
 
 jobs:
-  check:
+  lint:
     runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: pipx install pre-commit
+      - name: Run commit checks
+        uses: ./.github/actions/pre-commit
 
+  test:
+    runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.10', '3.11', '3.12', 'pypy3.10' ]
+        python-version: ["3.10", "3.11", "3.12", "pypy3.10"]
 
     steps:
       - uses: actions/checkout@v4
@@ -21,7 +28,5 @@ jobs:
           cache: poetry
       - name: Install dependencies
         run: poetry install --with=dev
-      - name: Run commit checks
-        run: poetry run pre-commit run -a
       - name: Run tests
         run: ./scripts/test