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
          # -L prints full build logs inline (including the gtest assertion that
          # fails); --keep-going surfaces the failure without aborting early.
          # determinate-nix isn't in the cache yet (the failing master run never
          # pushed it), so this rebuilds it and reruns the unit tests.
          nix build -L --keep-going --no-link .#ci.x86_64-linux.shell 2>&1 | tee repro.log

      - name: Show failing assertion
        if: failure()
        run: |
          echo "===== readLinkAt / gtest failure detail ====="
          grep -nE 'FAILED|readLinkAt|Failure|Expected|Actual|Value of|which is|error:' repro.log || true