Lets have a reusable (composite) action

Author: RadoRado

.github/workflows/django.yml

@@ -14,20 +14,6 @@ jobs:
       - name: Run tests
         run: docker compose run django py.test
 
-  install_dependencies:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: 3.12.4
-          cache: "pip"
-          cache-dependency-path: |
-            requirements/local.txt
-            requirements/base.txt
-      - name: Install dependencies
-        run: pip install -r requirements/local.txt
-
   build:
     runs-on: ubuntu-latest
     needs: install_dependencies
@@ -45,6 +31,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Run ruff
+      - uses: ./.github/workflows/python_and_pip.yml"
+        with:
+          python-version: 3.12.4
         run: ruff check .
       - name: Type check
         run: mypy --config mypy.ini styleguide_example/

.github/workflows/python_and_pip.yml

@@ -0,0 +1,18 @@
+name: "Install & Cache Python dependencies"
+description: "Reusable step (aka 'composite action') for doing pip installs, with cache included."
+inputs:
+  python-version:
+    description: "The version of Python to install"
+    required: true
+run:
+  using: "composite"
+  steps:
+    - uses: actions/setup-python@v5
+      with:
+        python-version: ${{ inputs.python-version }}
+        cache: "pip"
+        cache-dependency-path: |
+          requirements/local.txt
+          requirements/base.txt
+    - name: Install dependencies
+      run: pip install -r requirements/local.txt