ci: survive cold mesh-llm cache — clone locked rev when cargo fetch leaves no checkout - #3
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…eaves no checkout cargo fetch populates ~/.cargo/git/db but only materializes checkouts lazily at build time, so runners with no warm rust-cache (fresh fork, evicted cache) failed 'Build mesh llama native libraries' with 'checkout not found after cargo fetch'. Fall back to cloning the Cargo.lock-pinned rev (URL also derived from the lockfile) into RUNNER_TEMP. Applies to ci.yml, release.yml, signed-macos-canary.yml. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
flaukowski
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Jul 29, 2026
Merge upstream/main into kannaka-buzz main (sync 2026-07-28 #3)
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Summary
Fixes the Desktop Build (macOS) failure (
mesh-llm checkout for 43103c5 not found after cargo fetch) that has been red onmainsince the upstream sync — e.g. this run.Root cause:
cargo fetchpopulates~/.cargo/git/dbbut materializesgit/checkoutslazily at build time. Upstream block/buzz never sees this because its per-repo Actions caches (rust-cache +mesh-llama-*) are warm; a fork starts cold (caches are not inherited), so thefind … git/checkoutsprobe comes up empty and the step hard-fails.Fix: when no checkout exists, clone the Cargo.lock-pinned rev directly into
RUNNER_TEMP(URL parsed from the same lockfile entry as the rev, so dep bumps still need no lockstep edit). Warm-cache fast path unchanged. Applied to the three workflows sharing the block:ci.yml,release.yml,signed-macos-canary.yml.Generic robustness fix — candidate for an upstream PR to block/buzz as well (any cold runner there would hit the same cliff).
Test plan
Cargo.lock(git+https://github.com/Mesh-LLM/mesh-llm.git?tag=v0.73.1#43103c5c…→https://github.com/Mesh-LLM/mesh-llm.git).City-Agent: claude-fable-5
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