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fix: update bump branch toolchain to nightly for all repos (#12586)

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This PR fixes the release checklist to update the lean-toolchain to the
latest
nightly on newly created bump branches for all repositories, not just
batteries
and mathlib4. Previously cslib (and any future repos with `bump-branch:
true`)
would inherit the toolchain from main, causing nightly testing warnings
like

https://leanprover.zulipchat.com/#narrow/channel/428973-nightly-testing/topic/Cslib.20status.20updates/near/574648029

🤖 Prepared with Claude Code

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Kim Morrison 2026-02-20 00:04:26 +11:00 • committed by GitHub
parent ff2a2cd7a1
commit cdb4442537
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1 changed files with 2 additions and 2 deletions
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4
script/release_checklist.py
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@ -924,8 +924,8 @@ def main():
print(f" ✅ Bump branch {bump_branch} exists")
# For batteries and mathlib4, update the lean-toolchain to the latest nightly
if branch_created and name in ["batteries", "mathlib4"]:
# Update the lean-toolchain to the latest nightly for newly created bump branches
if branch_created:
latest_nightly = get_latest_nightly_tag(github_token)
if latest_nightly:
nightly_toolchain = f"leanprover/lean4:{latest_nightly}"