Merge pull request #4194 from hugovk/gha-cache

GHA: Cache pip for Ubuntu, macOS and Windows

.github/workflows/test-windows.yml

@@ -36,6 +36,16 @@ jobs:
         repository: python-pillow/pillow-depends
         ref: master
 
+    - name: Cache
+      uses: actions/cache@v1
+      with:
+        path: ~\AppData\Local\pip\Cache
+        key:
+          ${{ runner.os }}-${{ matrix.python-version }}-${{ matrix.architecture }}-${{ hashFiles('**/.github/workflows/test-windows.yml') }}
+        restore-keys: |
+          ${{ runner.os }}-${{ matrix.python-version }}-${{ matrix.architecture }}-
+          ${{ runner.os }}-${{ matrix.python-version }}-
+
     - name: Install PyPy
       if: "contains(matrix.python-version, 'pypy')"
       run: |

.github/workflows/test.yml

@@ -30,6 +30,26 @@ jobs:
     steps:
     - uses: actions/checkout@v1
 
+    - name: Ubuntu cache
+      uses: actions/cache@v1
+      if: startsWith(matrix.os, 'ubuntu')
+      with:
+        path: ~/.cache/pip
+        key:
+          ${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('**/.travis/*.sh') }}
+        restore-keys: |
+          ${{ matrix.os }}-${{ matrix.python-version }}-
+
+    - name: macOS cache
+      uses: actions/cache@v1
+      if: startsWith(matrix.os, 'macOS')
+      with:
+        path: ~/Library/Caches/pip
+        key:
+          ${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('**/.travis/*.sh') }}
+        restore-keys: |
+          ${{ matrix.os }}-${{ matrix.python-version }}-
+
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v1
       with: