jackos1998
7f1bcbda2a
CI repro (readLinkAt) / Reproduce determinate-nix test failure (push) Successful in 24s
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
65 lines
2.4 KiB
YAML
65 lines
2.4 KiB
YAML
name: CI repro (readLinkAt)
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# Throwaway workflow to reproduce the determinate-nix `readLinkAt.works` unit
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# test failure seen in the master CI build, and capture the full gtest log.
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# Runs only on this branch; delete the branch when done.
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on:
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push:
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branches: [ci-repro-readlinkat]
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jobs:
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repro:
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name: Reproduce determinate-nix test failure
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runs-on: ubuntu-26.04
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steps:
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- uses: actions/checkout@v6
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- uses: DeterminateSystems/determinate-nix-action@v3
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with:
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github-token: ${{ secrets.GH_PULL_TOKEN }}
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extra-conf: |
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sandbox-fallback = false
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cores = 6
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lazy-trees = true
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eval-cores = 0
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accept-flake-config = true
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extra-substituters = https://nix-cache.nul.ie
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extra-trusted-public-keys = nix-cache.nul.ie-1:BzH5yMfF4HbzY1C977XzOxoPhEc9Zbu39ftPkUbH+m4=
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- name: Nix build-dir / store settings
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run: |
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echo "===== nix config (build-dir / store / sandbox) ====="
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nix config show 2>/dev/null | grep -iE 'build-dir|store|sandbox|temp' || true
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echo "===== TMPDIR/env ====="
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echo "TMPDIR=$TMPDIR RUNNER_TEMP=$RUNNER_TEMP GITHUB_WORKSPACE=$GITHUB_WORKSPACE HOME=$HOME"
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- name: Mount table
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run: |
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echo "===== df -T ====="
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df -T || df -h
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echo "===== mount ====="
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mount 2>/dev/null | grep -iE 'overlay|tmpfs|/nix|ext4|xfs|btrfs|9p|fuse' || mount
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- name: Symlink-length probe
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run: |
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# Determine, per candidate dir, the longest symlink target that can be
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# created (the test needs PATH_MAX/2 = 2048 and PATH_MAX-1 = 4095).
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probe() {
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local d="$1"
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[ -d "$d" ] || { echo " $d: (absent)"; return; }
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local fstype; fstype=$(stat -f -c %T "$d" 2>/dev/null || echo '?')
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local res=""
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for n in 256 1000 2048 3000 4095; do
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local tgt; tgt=$(head -c "$n" < /dev/zero | tr '\0' 'y')
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if ln -sf "$tgt" "$d/.symtest.$n" 2>/dev/null; then res="$res $n"; else res="$res !$n"; fi
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rm -f "$d/.symtest.$n" 2>/dev/null || true
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done
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echo " $d [$fstype]:$res"
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}
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echo "===== max symlink target length per dir (n = ok, !n = ENAMETOOLONG) ====="
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for d in /tmp /var/tmp /dev/shm /nix /nix/var "$HOME" "$RUNNER_TEMP" "$GITHUB_WORKSPACE" /root /build; do
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probe "$d"
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done
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