Also add "force-overwrite" option to save-only action

save/action.yml

@@ -15,6 +15,10 @@ inputs:
     description: 'An optional boolean when enabled, allows windows runners to save caches that can be restored on other platforms'
     default: 'false'
     required: false
+  force-overwrite:
+    description: 'Delete any previous (incremental) cache before pushing a new cache even if a cache for the primary cache key exists'
+    default: 'false'
+    required: false
 runs:
   using: 'node20'
   main: '../dist/save-only/index.js'

src/saveImpl.ts

@@ -8,7 +8,6 @@ import {
     StateProvider
 } from "./stateProvider";
 import * as utils from "./utils/actionUtils";
-import { issueCommand } from "@actions/core/lib/command";
 
 // Catch and log any unhandled exceptions.  These exceptions can leak out of the uploadChunk method in
 // @actions/toolkit when a failed upload closes the file descriptor causing any in-process reads to
@@ -51,13 +50,16 @@ export async function saveImpl(
         const forceOverwrite = utils.getInputAsBool(Inputs.ForceOverwrite);
         if (utils.isExactKeyMatch(primaryKey, restoredKey) && !forceOverwrite) {
             core.info(
-                `Cache hit occurred on the primary key ${primaryKey} and force-overwrite is disabled, not saving cache.`
+                `Cache hit occurred on the primary key "${primaryKey}" and force-overwrite is disabled, not saving cache.`
             );
             return;
         }
 
-        if (utils.isExactKeyMatch(primaryKey, restoredKey) && forceOverwrite) {
-            await issueCommand('actions-cache delete', {}, primaryKey);
+        if ((restoredKey == undefined || utils.isExactKeyMatch(primaryKey, restoredKey)) && forceOverwrite) {
+            core.info(
+                `Cache hit occurred on the primary key "${primaryKey}" or running as save-only and force-overwrite is enabled, deleting cache.`
+            );
+            await cache.deleteCache(primaryKey)
         }
 
         const cachePaths = utils.getInputAsArray(Inputs.Path, {