ci: simplify cache overwriting

Ref: actions/cache#342 (comment)

Author: dshil

.github/actions/system/ccache/action.yml

@@ -22,10 +22,6 @@ inputs:
     description: "path for various caches"
     required: true
     default: ".cache"
-  GITHUB_TOKEN:
-    description: "GitHub token for authentication"
-    required: true
-    default: "${{ github.token }}"
   CCACHE_HASH_FILE_KEY:
     description: "Unique cache key for ccache hash file"
     required: true
@@ -53,12 +49,13 @@ runs:
 
         echo "export CCACHE_LOGFILE=$GITHUB_WORKSPACE/$ccache_log_file" >> "${{ inputs.CONFIGURATION_PATH_CCACHE }}"
 
-    - name: Restore ccache Hash File
+    - name: ccache restore hash file
       uses: actions/cache/restore@v4
       with:
         path: ${{ inputs.CACHE_PATH }}/ccache_last_hash
         key: ${{ inputs.CCACHE_HASH_FILE_KEY }}
-
+        restore-keys: |
+          ${{ inputs.CCACHE_HASH_FILE_KEY }}-
 
     - name: ccache update hash file
       env:
@@ -97,20 +94,12 @@ runs:
         echo "ccache_cache_key=ccache-${{ runner.os }}-$new_hash" >> $GITHUB_ENV
         echo "ccache_cache_restore_key=ccache-${{ runner.os }}-$prev_hash" >> $GITHUB_ENV
 
-    - name: ccache remove hash file
-      if: env.ccache_hash_file_changed == 'true'
-      uses: open-control-systems/gh-action-cache-clear@v0.0.2
-      with:
-        PATTERN: "^${{ inputs.CCACHE_HASH_FILE_KEY }}"
-        GITHUB_TOKEN: ${{ inputs.GITHUB_TOKEN }}
-
-
     - name: ccache save hash file
       if: env.ccache_hash_file_changed == 'true'
       uses: actions/cache/save@v4
       with:
         path: ${{ inputs.CACHE_PATH }}/ccache_last_hash
-        key: ${{ inputs.CCACHE_HASH_FILE_KEY }}
+        key: ${{ inputs.CCACHE_HASH_FILE_KEY }}-${{ github.run_id }}
 
     - name: ccache setup cache
       uses: actions/cache@v4

.github/workflows/esp32.yml

@@ -11,14 +11,6 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    permissions:
-      # `actions:write` permission is required to delete caches
-      #
-      # refs:
-      #  - https://stackoverflow.com/questions/70435286/resource-not-accessible-by-integration-on-github-post-repos-owner-repo-ac
-      #  - https://github.com/actions/cache/blob/6849a6489940f00c2f30c0fb92c6274307ccb58a/tips-and-workarounds.md?plain=1#L57
-      #  - https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#permissions
-      actions: write
     env:
       PROJECT_PATH: project
       IDF_PATH: esp-idf
@@ -49,7 +41,6 @@ jobs:
       - name: system setup ccache
         uses: ./project/.github/actions/system/ccache
         with:
-          GITHUB_TOKEN: ${{ github.token }}
           PROJECT_PATH: ${{ env.PROJECT_PATH }}
           CONTROL_COMPONENTS_PATH: ${{ env.PROJECT_PATH }}
           CONFIGURATION_PATH_CCACHE: ${{ env.CONFIGURATION_PATH_CCACHE }}