copilot-setup-steps.yml

---
# Setup steps for the GitHub Copilot coding agent.
#
# GitHub runs the job named exactly `copilot-setup-steps` from this path before
# the agent's firewall is enabled, so engines that must be fetched from the
# network (XS, V8) can be pre-installed here. The job name and the
# `.github/workflows/` location are both required for Copilot to discover it.
#
# Installation is delegated to the repo's own maintained installer so this stays
# in sync with CI. It installs XS and V8 into ~/.engines/bin, which is where the
# benchmark harness (packages/benchmark/run-tests.sh) looks for them.
name: Copilot Setup Steps

on:
  workflow_dispatch:
  # Run on changes to this file so it can be validated in CI.
  push:
    paths:
      - .github/workflows/copilot-setup-steps.yml
  pull_request:
    paths:
      - .github/workflows/copilot-setup-steps.yml

permissions:
  contents: read

# Cancel in-progress runs for the same branch when a new run is started
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  copilot-setup-steps:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      # without this, setup-node errors on mismatched yarn versions
      - run: corepack enable

      - name: Use Node.js
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
        with:
          node-version-file: .node-version
          cache: yarn

      - name: Install dependencies
        run: yarn install --immutable

      # Pre-install the XS and V8 engines into ~/.engines using the repo's own
      # installer (the same command CI runs), so they are available before the
      # Copilot agent's firewall blocks the downloads.
      - name: Install engines
        run: yarn workspace @endo/benchmark run install-engines