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Mathlib's cache for the pinned revision lacks Mathlib.Tactic.CategoryTheory.BicategoryCoherence, so the trusted `lake -v --no-build build TauCeti` found that module out of date and failed, failing every evaluation since lean-eval moved to this Mathlib. Run a plain `lake build Mathlib` first, without TauCeti's cache settings. It compiles only the modules `lake exe cache get` could not supply, it cannot compile TauCeti, and the compiled modules reproduce the input traces that key TauCeti's published outputs. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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This PR runs a plain
lake build Mathlibin the trusted root build before the cache-onlylake -v --no-build build TauCeti. Mathlib's cache for the pinned revision (b63f6e8) lacksMathlib.Tactic.CategoryTheory.BicategoryCoherence(lake exe cache getdownloads 8959 of 8960 files), so the cache-only TauCeti step found that module out of date and failed every evaluation, for example https://github.com/leanprover/lean-eval-submissions/actions/runs/43348967927.The Mathlib build runs without TauCeti's cache settings and compiles only the modules the Mathlib cache did not supply; on a complete cache it takes about 15 seconds. Mathlib cannot import TauCeti, so it cannot compile TauCeti, and the TauCeti step stays cache-only. Lake keys TauCeti's published outputs by input traces, which a locally compiled Mathlib module reproduces, so the TauCeti downloads still match.
#2182 replaces this step with a selective restore that also runs with compilation disabled, so it needs the same pre-build when it lands.
🤖 Prepared with Claude Code