Take different jobs (matrix) into account

[Clashsoft]

My repo has one workflow file and uses a matrix strategy to build each service individually:

jobs:
  build:
    name: Build and push
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        service:
          - app: ...
            dockerfile: ...
          - ...
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Set base ref for Nx affected
        uses: nrwl/nx-set-shas@v4
        # --- here ---
      - name: Set up pnpm
        uses: pnpm/action-setup@v4
      - name: Install Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 23
          cache: 'pnpm'
      - name: Install dependencies
        run: PUPPETEER_SKIP_DOWNLOAD=true pnpm install
      - name: Check if Nx affected
        id: nx-affected
        # Use nx show --affected to check if the current commit affects the service
        run: |
          set -x
          pnpm exec nx show projects --affected --target=build --projects=${{ matrix.service.app }}
          affected="$(pnpm exec nx show projects --affected --target=build --projects=${{ matrix.service.app }})"
          echo "Affected: $affected"
          if [ -z "$affected" ]
          then
            echo "No changes detected for ${{ matrix.service.app }}. Skipping build."
            echo "skip=true" >> $GITHUB_OUTPUT
          fi
      - name: Do the actual build **if necessary**...
        if: "!steps.nx-affected.outputs.skip"
        ...

Unfortunately, if any job fails to build, the entire workflow run is considered failed for the purposes of nx-set-shas.
That means the last workflow run where all services built successfully taken as the base ref, which might increase the number of services that need to be built.

It would be beneficial to add the matrix job ID to nx-check-shas so it can find the last workflow run where that matrix job was last successful.
In other words, each matrix job could use a different base sha depending on the service being built or matrix job in general.

[meeroslav]

The purpose of this tool is to automate the most common scenarios. Your situation seems to be very specific, so we encourage you to create your own version of this action that would do exactly what you are looking for.

It doesn't even have to be a published GitHub action - you can simply create a bash script that would populate the necessary NX_BASE and NX_HEAD.

Thank you for being valuable member of the community.