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Arthur742Ramos

lean-build

by Arthur742Ramos

0🍴 0📅 Jan 18, 2026

SKILL.md


name: lean-build description: Build, test, and debug Lean 4 projects using Lake. Use when building the ComputationalPaths project, checking for errors, running tests, cleaning artifacts, or debugging Lean 4 compilation issues.

Lean 4 Build & Debug

Build the ComputationalPaths Lean 4 project using Lake.

Essential Commands

# Build entire project
lake build

# Build specific module
lake build ComputationalPaths.Path.HIT.Circle

# Clean and rebuild
lake clean && lake build

# Run executable
lake exe computational_paths

Common Build Errors

ErrorSolution
unknown identifierCheck imports, use fully qualified name
type mismatchAdd type annotations or use @ for explicit args
must be marked as 'noncomputable'Add noncomputable keyword
universe level mismatchEnsure consistent universe variables (typically Type u)

Debugging

#check myTerm             -- show type
#print axioms myTheorem   -- show axioms used
#reduce myTerm            -- fully normalize

Toolchain

  • Current: leanprover/lean4:v4.24.0 (see lean-toolchain)
  • Update: edit lean-toolchain, then lake clean && lake build

Score

Total Score

60/100

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