Update workflows to use composite actions

.github/actions/install-examples/action.yml

@@ -0,0 +1,13 @@
+name: install-examples
+
+runs:
+  using: composite
+  steps:
+    - name: Install Melting Pot
+      uses: ./.github/actions/install-meltingpot
+    - name: Install requirements for examples
+      shell: bash
+      run: pip -r examples/requirements.txt
+    - name: Show installed dependencies
+      shell: bash
+      run: pip list

.github/actions/install-meltingpot/action.yml

@@ -0,0 +1,61 @@
+name: install-meltingpot
+
+inputs:
+  python-version:
+    description: Python version
+    required: false
+    default: '3.10'
+    type: string
+
+runs:
+  using: composite
+  steps:
+    - name: Set up Python
+      uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1
+      with:
+        python-version: ${{ inputs.python-version }}
+
+    - name: Restore install cache
+      id: cache-restore
+      uses: actions/cache/restore@v3
+      with:
+        path: |
+          assets
+          meltingpot/assets
+          venv
+        key: install-meltingpot-${{ runner.name }}-py${{ inputs.python-version}}-${{ hashFiles('setup.py') }}
+        restore-keys:
+          install-meltingpot-${{ runner.name }}-py${{ inputs.python-version }}
+
+    - name: Debug
+      shell: bash
+      run: |
+        echo "cache-hit=${{ steps.cache-restore.outputs.cache-hit }}"
+        pwd
+        ls -la
+        ls -la meltingpot
+
+    - name: Install Python dependencies
+      if: steps.cache-restore.outputs.cache-hit == 'false'
+      shell: bash
+      run: |
+        pip install --upgrade pip
+        pip install virtualenv
+        virtualenv venv
+        source venv/bin/activate
+        pip install -e .[dev]
+
+    - name: Save install cache
+      uses: actions/cache/save@v3
+      with:
+        path: |
+          assets
+          venv
+          meltingpot/assets
+        key: ${{ steps.cache-restore.outputs.cache-primary-key }}
+
+    - name: Show installed dependencies
+      shell: bash
+      run: |
+        source venv/bin/activate
+        pip list

.github/workflows/pylint-examples.yml

@@ -0,0 +1,43 @@
+name: pylint-examples
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - '.github/actions/install-examples/action.yml'
+      - '.github/actions/install-meltingpot/action.yml'
+      - '.github/workflows/pylint-examples.yml'
+      - '.pylintrc'
+      - 'examples/**'
+      - 'meltingpot/**'
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '.github/actions/install-examples/action.yml'
+      - '.github/actions/install-meltingpot/action.yml'
+      - '.github/workflows/pylint-examples.yml'
+      - '.pylintrc'
+      - 'examples/**'
+      - 'meltingpot/**'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+permissions: read-all
+
+jobs:
+  pylint:
+    name: Lint examples
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - name: Checkout Melting Pot
+        uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3
+      - name: Install examples
+        uses: ./.github/actions/install-examples
+      - name: Run PyLint on examples
+        run: pylint --errors-only examples

.github/workflows/pylint-meltingpot.yml

@@ -0,0 +1,41 @@
+name: pylint-meltingpot
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - '.github/actions/install-meltingpot/action.yml'
+      - '.github/workflows/pylint-meltingpot.yml'
+      - '.pylintrc'
+      - 'examples/**'
+      - 'meltingpot/**'
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '.github/actions/install-meltingpot/action.yml'
+      - '.github/workflows/pylint-meltingpot.yml'
+      - '.pylintrc'
+      - 'examples/**'
+      - 'meltingpot/**'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+permissions: read-all
+
+jobs:
+  pylint:
+    name: Lint Melting Pot
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - name: Checkout Melting Pot
+        uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3
+      - name: Install Melting Pot
+        uses: ./.github/actions/install-meltingpot
+      - name: Run PyLint on Melting Pot
+        run: pylint --errors-only meltingpot

.github/workflows/pytype-examples.yml

@@ -0,0 +1,43 @@
+name: pytype-examples
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - '.github/actions/install-examples/action.yml'
+      - '.github/actions/install-meltingpot/action.yml'
+      - '.github/workflows/pytype-examples.yml'
+      - 'examples/**'
+      - 'meltingpot/**'
+      - 'pyproject.toml'
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '.github/actions/install-examples/action.yml'
+      - '.github/actions/install-meltingpot/action.yml'
+      - '.github/workflows/pytype-examples.yml'
+      - 'examples/**'
+      - 'meltingpot/**'
+      - 'pyproject.toml'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+permissions: read-all
+
+jobs:
+  pytype:
+    name: Typecheck examples
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - name: Checkout Melting Pot
+        uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3
+      - name: Install examples
+        uses: ./.github/actions/install-examples
+      - name: Run PyType on examples
+        run: pytype examples

.github/workflows/pytype-meltingpot.yml

@@ -0,0 +1,41 @@
+name: pytype-meltingpot
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - '.github/actions/install-meltingpot/action.yml'
+      - '.github/workflows/pytype-meltingpot.yml'
+      - 'examples/**'
+      - 'meltingpot/**'
+      - 'pyproject.toml'
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '.github/actions/install-meltingpot/action.yml'
+      - '.github/workflows/pytype-meltingpot.yml'
+      - 'examples/**'
+      - 'meltingpot/**'
+      - 'pyproject.toml'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+permissions: read-all
+
+jobs:
+  pytype:
+    name: Typecheck Melting Pot
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - name: Checkout Melting Pot
+        uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3
+      - name: Install Melting Pot
+        uses: ./.github/actions/install-meltingpot
+      - name: Run PyType on Melting Pot
+        run: pytype meltingpot