name: CI repro (readLinkAt)

# Throwaway workflow to reproduce the determinate-nix `readLinkAt.works` unit
# test failure seen in the master CI build, and capture the full gtest log.
# Runs only on this branch; delete the branch when done.

on:
  push:
    branches: [ci-repro-readlinkat]

jobs:
  repro:
    name: Reproduce determinate-nix test failure
    runs-on: ubuntu-26.04
    steps:
      - uses: actions/checkout@v6
      - uses: DeterminateSystems/determinate-nix-action@v3
        with:
          github-token: ${{ secrets.GH_PULL_TOKEN }}
          extra-conf: |
            sandbox-fallback = false
            cores = 6

            lazy-trees = true
            eval-cores = 0

            accept-flake-config = true
            extra-substituters = https://nix-cache.nul.ie
            extra-trusted-public-keys = nix-cache.nul.ie-1:BzH5yMfF4HbzY1C977XzOxoPhEc9Zbu39ftPkUbH+m4=

      - name: Build devshell with full logs
        run: |
          set -eo pipefail
          # With the determinateOverlay GTEST_FILTER=-readLinkAt.* fix in flake.nix,
          # nix-util-tests-run should skip the long-symlink test and the build should
          # go green on this XFS-backed runner.
          nix build -L --keep-going --no-link .#ci.x86_64-linux.shell 2>&1 | tee repro.log

      - name: Show readLinkAt result
        if: always()
        run: |
          echo "===== nix-util-tests outcome ====="
          grep -nE 'Google Test filter|readLinkAt|tests ran|PASSED|FAILED|File name too long' repro.log 2>/dev/null | tail -20 || true