✅ Tweak pip/PIO caching

.github/workflows/ci-build-tests.yml

@@ -170,15 +170,20 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        key: ${{ runner.os }}-pip-build-v1
         restore-keys: |
-          ${{ runner.os }}-pip-
+          ${{ runner.os }}-pip-build-
 
     - name: Cache PlatformIO
       uses: actions/cache@v4
       with:
-        path: ~/.platformio
-        key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
+        path: |
+          ~/.platformio
+          .pio/build
+          .pio/libdeps
+        key: ${{ runner.os }}-pio-build-v1
+        restore-keys: |
+          ${{ runner.os }}-pio-build-
 
     - name: Select Python 3.9
       uses: actions/setup-python@v5

.github/workflows/ci-unit-tests.yml

@@ -46,15 +46,20 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        key: ${{ runner.os }}-pip-unit-v1
         restore-keys: |
-          ${{ runner.os }}-pip-
+          ${{ runner.os }}-pip-unit-
 
     - name: Cache PlatformIO
       uses: actions/cache@v4
       with:
-        path: ~/.platformio
-        key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
+        path: |
+          ~/.platformio
+          .pio/build
+          .pio/libdeps
+        key: ${{ runner.os }}-pio-tests-v1
+        restore-keys: |
+          ${{ runner.os }}-pio-tests-
 
     - name: Select Python 3.9
       uses: actions/setup-python@v5

.github/workflows/ci-validate-boards.yml

@@ -33,9 +33,9 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        key: ${{ runner.os }}-pip-boards-v1
         restore-keys: |
-          ${{ runner.os }}-pip-
+          ${{ runner.os }}-pip-boards-
 
     - name: Select Python 3.9
       uses: actions/setup-python@v5

.github/workflows/ci-validate-pins.yml

@@ -36,9 +36,9 @@ jobs:
       uses: actions/cache@v4
       with:
         path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        key: ${{ runner.os }}-pip-pins-v1
         restore-keys: |
-          ${{ runner.os }}-pip-
+          ${{ runner.os }}-pip-pins-
 
     - name: Select Python 3.9
       uses: actions/setup-python@v5