Cache.IO

[arademaker]

I got an error during the setup. Any idea? In the lakefile.toml I added

[[require]]
name = "LeanCopilot"
git  = "https://github.com/lean-dojo/LeanCopilot.git"
rev  = "main"

moreLinkArgs = ["-L./.lake/packages/LeanCopilot/.lake/build/lib", "-lctranslate2"]

This is my environment and the error:

% uname -a
Darwin MacBook-Pro-14-2025.local 24.5.0 Darwin Kernel Version 24.5.0: Tue Apr 22 19:54:43 PDT 2025; root:xnu-11417.121.6~2/RELEASE_ARM64_T8132 arm64

% elan -V
elan 4.1.2 (58e8d545e 2025-05-26)

% cat lean-toolchain
leanprover/lean4:v4.20.0-rc3%

% lake update LeanCopilot
info: toolchain not updated; already up-to-date
info: mathlib: running post-update hooks
✖ [4/12] Building Cache.IO
trace: .> LEAN_PATH=/Users/ar/r/emap-20251-taa/fad/.lake/packages/Cli/.lake/build/lib/lean:/Users/ar/r/emap-20251-taa/fad/.lake/packages/Qq/.lake/build/lib/lean:/Users/ar/r/emap-20251-taa/fad/.lake/packages/proofwidgets/.lake/build/lib/lean:/Users/ar/r/emap-20251-taa/fad/.lake/packages/importGraph/.lake/build/lib/lean:/Users/ar/r/emap-20251-taa/fad/.lake/packages/LeanSearchClient/.lake/build/lib/lean:/Users/ar/r/emap-20251-taa/fad/.lake/packages/plausible/.lake/build/lib/lean:/Users/ar/r/emap-20251-taa/fad/.lake/packages/batteries/.lake/build/lib/lean:/Users/ar/r/emap-20251-taa/fad/.lake/packages/aesop/.lake/build/lib/lean:/Users/ar/r/emap-20251-taa/fad/.lake/packages/mathlib/.lake/build/lib/lean:/Users/ar/r/emap-20251-taa/fad/.lake/packages/LeanCopilot/.lake/build/lib/lean:/Users/ar/r/emap-20251-taa/fad/.lake/build/lib/lean /Users/ar/.elan/toolchains/leanprover--lean4---v4.20.0-rc3/bin/lean /Users/ar/r/emap-20251-taa/fad/.lake/packages/mathlib/Cache/IO.lean -R /Users/ar/r/emap-20251-taa/fad/.lake/packages/mathlib -o /Users/ar/r/emap-20251-taa/fad/.lake/packages/mathlib/.lake/build/lib/lean/Cache/IO.olean -i /Users/ar/r/emap-20251-taa/fad/.lake/packages/mathlib/.lake/build/lib/lean/Cache/IO.ilean -c /Users/ar/r/emap-20251-taa/fad/.lake/packages/mathlib/.lake/build/ir/Cache/IO.c --json
error: /Users/ar/r/emap-20251-taa/fad/.lake/packages/mathlib/Cache/IO.lean:132:11: unknown identifier 'initSrcSearchPath'
error: Lean exited with code 1
Some required builds logged failures:
- Cache.IO
error: build failed

[Peiyang-Song]

Hi @arademaker , thanks for the report. From reading the error log, I see that the error is from a mathlib file (namely mathlib/Cache/IO.lean). Lean Copilot does not depend on mathlib, so I suspect that error is not from Lean Copilot itself. Most likely your project has mathlib as a dependency, and somehow it is throwing errors here?