Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
cee149cc1f
This PR upstreams dependency-management commands from Mathlib: - `#import_path Foo` prints the transitive import chain that brings `Foo` into scope - `assert_not_exists Foo` errors if declaration `Foo` exists (for dependency management) - `assert_not_imported Module` warns if `Module` is transitively imported - `#check_assertions` verifies all pending assertions are eventually satisfied These commands help maintain the independence of different parts of a library by catching unintended transitive dependencies early. ### Example usage ```lean -- Find out how Nat got into scope #import_path Nat -- Declaration Nat is imported via -- Init.Prelude, -- which is imported by Init.Coe, -- which is imported by Init.Notation, -- ... -- which is imported by this file. -- Assert that a declaration should not be in scope yet assert_not_exists SomeAdvancedType -- Assert that a module should not be imported assert_not_imported Some.Heavy.Module -- Verify all assertions are eventually satisfied #check_assertions ``` Addresses https://lean-fro.zulipchat.com/#narrow/channel/398861-general/topic/path.20of.20an.20import 🤖 Prepared with Claude Code --------- Co-authored-by: Claude <noreply@anthropic.com> |
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