docs(ci): record why the bun dependabot run currently fails - #331
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Keeping `package-ecosystem: bun`. The monthly run errors because bun 1.4 writes lockfileVersion 2 and Dependabot's bundled bun parses only version 1 (dependabot-core#16071, open). That hard error is itself the fix for #15848, where the old image silently downgraded the lockfile and changed resolutions with no warning. No dependency PRs until #16071 ships. Reverting to `npm` would bring the PRs back but each would carry a stale lockfile and fail CI, which is the noise #329 removed.
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Comment-only. Keeps
package-ecosystem: bunand writes down why the monthly run is red so it doesn't get "fixed" by reverting #329.The state
bun 1.4 writes
"lockfileVersion": 2; Dependabot's updater image bundles an older bun. There is no flag to make bun emit a v1 lockfile, so nothing can be done locally.Why this error is progress
It is the fix for dependabot-core#15848, where the old image silently discarded a v2 lockfile, regenerated a v1, and changed resolutions with no warning. #15896 made it reject loudly instead. Actual v2 support is #16071 — still open, last updated 2026-08-28.
The trade being accepted
No dependency PRs until #16071 ships. Reverting to
package-ecosystem: npmwould restore them, but every one would arrive with a stalebun.lockand failbun install --frozen-lockfile— exactly the noise #329 cleared. A loud monthly failure beats a stream of red PRs.github-actionsupdates are unaffected and still working.