brew audit fails to find cask in my tap during GH workflow

[fasmat]

Description of issue

I have a github workflow in my own personal tap that style checks and audits my casks whenever I make a change to them. The full workflow can be found here: https://github.com/fasmat/homebrew-trader-workstation/blob/7ef0b9c/.github/workflows/main.yml.

The relevant section I have issues with is this here:

      - name: Set up Homebrew
        id: set-up-homebrew
        uses: Homebrew/actions/setup-homebrew@master
        with:
          stable: true
          test-bot: false
      - name: Cache Homebrew Gems
        id: cache
        uses: actions/cache@v4
        with:
          path: ${{ steps.set-up-homebrew.outputs.gems-path }}
          key: ${{ matrix.os }}-rubygems-${{ steps.set-up-homebrew.outputs.gems-hash }}
          restore-keys: ${{ matrix.os }}-rubygems-
      - name: Install Homebrew Gems
        id: gems
        run: brew install-bundler-gems
        if: steps.cache.outputs.cache-hit != 'true'

      - name: Style check cask
        run: brew style --casks ${{ join(fromJson(needs.detect_casks.outputs.casks), ' ') }}
      - name: Audit cask
        run: brew audit --casks --online --strict ${{ join(fromJson(needs.detect_casks.outputs.casks), ' ') }}

The needs.detect_casks.outputs.casks is set by a previous job that detects which casks are supposed to be checked. Replacing it with a single name of a cask in my repo (e.g. trader-workstation-beta) does not solve the issue.

For some reason the audit step fails with:

Auditing cask: trader-workstation-beta
Fetching gem metadata from https://rubygems.org/.......
Fetching rexml 3.4.1
Installing rexml 3.4.1
Bundle complete! 43 Gemfile dependencies, 32 gems now installed.
Bundled gems are installed into `../../../../../opt/homebrew/Library/Homebrew/vendor/bundle`
Error: Cask 'trader-workstation-beta' is unavailable: No Cask with this name exists.
Error: Process completed with exit code 1.

But the style check (and install / uninstall of the cask(s)) work perfectly fine. Any ideas as to what could be the issue? Until recently I just set HOMEBREW_DEVELOPER to be able to specify the path to the Cask and it worked as expected, but that stopped working since Homebrew/brew#20414 was merged.

[daeho-ro]

What about to use full name of cask, <tap>/<cask>?

[fasmat]

The repo is called fasmat/homebrew-trader-workstation and I tried it with both fasmat/homebrew-trader-workstation/trader-workstation-beta and fasmat/trader-workstation/trader-workstation-beta without success. 🙁

[henryborchers]

Ran into the same problem

[henryborchers]

I do nightly tests on my formulas and casks and the last day this was working for me was August 12th. If that helps at all?

[henryborchers]

For sure it worked on homebrew version 4.6.3. I can't tell when it broke though.

[fasmat]

This change broke it I believe: Homebrew/brew#20414 I found a way around for install/uninstall and style checks but audit doesn't actually work at the moment.