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[test] Harden temporary test fixture installs against supply chain attacks#92565

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[test] Harden temporary test fixture installs against supply chain attacks#92565
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@eps1lon eps1lon commented Apr 9, 2026

We set minimumReleaseAge in our monorepo but that's already secured against unintentional upgrades to compromised packages with a lockfile. However, test fixture installs are open since they don't have a lockfile.

We now propagate minimumReleaseAge, minimumReleaseAgeExclude, and blockExoticSubdeps. This doesn't apply to tests using other package managers with a custom installCommand.

@nextjs-bot nextjs-bot added created-by: Next.js team PRs by the Next.js team. tests labels Apr 9, 2026
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Failing test suites

Commit: 7d733ba | About building and testing Next.js

pnpm test-dev test/e2e/app-dir/pnpm-workspace-root/pnpm-workspace-root.test.ts (job)

  • pnpm-workspace-root > should not have multiple lockfiles warning when pnpm-workspace.yaml is present (DD)
Expand output

● pnpm-workspace-root › should not have multiple lockfiles warning when pnpm-workspace.yaml is present

expect(received).not.toMatch(expected)

Expected pattern: not /We detected multiple lockfiles/
Received string:      "▲ Next.js 16.2.1-canary.29 (Turbopack)
- Local:         http://localhost:37269
- Network:       http://176.9.53.148:37269
✓ Ready in 482ms
Creating turbopack project {
  dir: '/tmp/next-install-87d3c747792220c63717b085d03be79a7f2ab46a63281c32ed56d7c7d4ad490d/test',
  testMode: true
}

  We detected TypeScript in your project and created a tsconfig.json file for you.
⚠ Warning: Next.js inferred your workspace root, but it may not be correct.
 We detected multiple lockfiles and selected the directory of /tmp/next-install-87d3c747792220c63717b085d03be79a7f2ab46a63281c32ed56d7c7d4ad490d/pnpm-workspace.yaml as the root directory.
 To silence this warning, set `turbopack.root` in your Next.js config, or consider removing one of the lockfiles if it's not needed.
   See https://nextjs.org/docs/app/api-reference/config/next-config-js/turbopack#root-directory for more information.
 Detected additional lockfiles: 
   * /tmp/next-install-87d3c747792220c63717b085d03be79a7f2ab46a63281c32ed56d7c7d4ad490d/test/pnpm-workspace.yaml

- Experiments (use with caution):
  ✓ strictRouteTypes (enabled by `__NEXT_EXPERIMENTAL_STRICT_ROUTE_TYPES`)

 GET / 200 in 2.1s (next.js: 1921ms, application-code: 190ms)
"

  64 |     // and we shouldn't see the "multiple lockfiles" warning since pnpm-workspace.yaml
  65 |     // is prioritized and acts as the definitive workspace root marker
> 66 |     expect(next.cliOutput).not.toMatch(/We detected multiple lockfiles/)
     |                                ^
  67 |   })
  68 | })
  69 |

  at Object.toMatch (e2e/app-dir/pnpm-workspace-root/pnpm-workspace-root.test.ts:66:32)

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eps1lon commented Apr 9, 2026

A lot of work to make this work with tests having a custom monorepo-ish setup. I won't spend more time on this.

@eps1lon eps1lon closed this Apr 9, 2026
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Stats from current PR

✅ No significant changes detected

📊 All Metrics
📖 Metrics Glossary

Dev Server Metrics:

  • Listen = TCP port starts accepting connections
  • First Request = HTTP server returns successful response
  • Cold = Fresh build (no cache)
  • Warm = With cached build artifacts

Build Metrics:

  • Fresh = Clean build (no .next directory)
  • Cached = With existing .next directory

Change Thresholds:

  • Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
  • Size: Changes < 1KB AND < 1% are insignificant
  • All other changes are flagged to catch regressions

⚡ Dev Server

Metric Canary PR Change Trend
Cold (Listen) 455ms 456ms ▁█▅▅▅
Cold (Ready in log) 441ms 446ms ▁▂▅▇▄
Cold (First Request) 1.129s 1.119s ▆▁▁▂▂
Warm (Listen) 456ms 457ms █▁██▁
Warm (Ready in log) 446ms 446ms ▂▂▇█▁
Warm (First Request) 343ms 344ms ▃▄▇█▄
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 455ms 456ms ▁▁▅▁▅
Cold (Ready in log) 442ms 442ms ▁▃▆▂▂
Cold (First Request) 1.946s 1.961s ▇▇▇▆▁
Warm (Listen) 456ms 456ms ▁▁▁▁▁
Warm (Ready in log) 442ms 442ms ▁▂▅▁▂
Warm (First Request) 1.969s 1.955s ▆▇█▆▁

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 3.960s 3.934s ▇▆██▁
Cached Build 3.928s 3.881s ▄███▄
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 14.619s 14.734s ▁▂▅▂▂
Cached Build 14.747s 14.919s ▁▂▇▃▄
node_modules Size 491 MB 491 MB █████
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Canary PR Change
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Canary PR Change
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Canary PR Change
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Total 398 kB 399 kB ⚠️ +1.13 kB
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Canary PR Change
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Total 719 B 718 B ✅ -1 B
Build Cache
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Total 4.6 MB 4.6 MB ⚠️ +56 B

🔄 Shared (bundler-independent)

Runtimes
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app-route-tu..prod.js gzip 52.5 kB 52.5 kB
app-route-tu...dev.js gzip 76.5 kB 76.5 kB
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📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/ac442d8e240ce6f3dd6d7edeeed00840236b68bc/next

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