Cache never hits between 2 tags even when the key is the same

I’m trying to apply 2 type of caches,

1. cache for yarn on my build step.
2. cache for my 3 next apps

The project is uses yarn workspaces which has 3 projects under /packages/renderers/ My build is triggered by tag creation.

name: Build & Deploy
on:
  push:
    tags:
      - 'v1.*'
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v1
        with:
          node-version: 12.x

      - name: Get yarn cache directory path
        id: yarn-cache-dir-path
        run: echo "::set-output name=dir::$(yarn cache dir)"

      - uses: actions/cache@v2
        id: yarn-cache
        with:
          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
          key: ${{ runner.os }}-yarn-${{ hashFiles('yarn.lock') }}
          restore-keys: |
            ${{ runner.os }}-yarn-

      - uses: actions/cache@v2
        with:
          path: |
            ${{ github.workspace }}/packages/renderers/*/.next/cache

          key: ${{ runner.os }}-nextjs-${{ hashFiles('yarn.lock') }}

      - name: Install Packages
        run: yarn install --frozen-lockfile
        env:
          CI: true

      - name: Build artifacts
        run: yarn build
        env:
          CI: true

I’ve tried to debug, found out that the recommended doc config for yarn cache which uses hashFiles('**/yarn.lock') is wrong cause it picks yarn.lock files from node_module (as part of the key) at the end of the build, but tries to restore with empty node_modules which produced different hash. I’ve changed this and now the restore key is the same but it still claims that cache not found.

[affonso-rafael]

Can somebody clarify if this action is supposed to work from tag push? The documentation says “you can access the cache in workflows triggered by any event that has a GITHUB_REF”, which would imply that it should in fact work.

Yes, but, you’ll have to cache it before creating your tag (which triggers off your workflow). In my case, I created a separated workflow update-cache.yml which is triggered off when some PR is merged in the main, that is before the tag is created. So when my tag is created, the cache is available for it.

[felixmosh]

Any help pls 🙏🏼