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Julia extensions break silently on dependency major bumps

Extension dependencies can silently break when a package bumps a dependency major version, because the extension relies on that dependency only indirectly.

Tier II · Emerging Problems that are still building up.

3 public reports · first reported 27 September 2026 · last reported 27 September 2026

Idea report · $9 · No contacts · All sales final

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What's going wrong

Julia package authors who use extensions report that an extension can stop working without warning when a package it depends on indirectly moves to a new major version of another dependency.

AI-assisted: written with the help of AI from the reports. The idea report has the full summary.

In the idea report

  • The full summary.
  • The products the 3 reports are about, and how many came each month.
  • Related problems.

No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.