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Race condition in lean4 stage2+ builds

bugSomething isn't workingSomething isn't working

Status: Open.

#11808 In leanprover/lean4;

· NicolasRouquette opened on Dec 27, 2025

Add getElem?_mergeWith lemma for TreeMap/DTreeMap

Status: Open.

#11807 In leanprover/lean4;

· alok opened on Dec 27, 2025

Lake and graph interop failure via <code>lake-manifest.json</code>

bugSomething isn't workingSomething isn't working

Status: Open.

#11805 In leanprover/lean4;

· davideger opened on Dec 26, 2025

panic in async elaboration for theorems with a docstring within <code>where</code>

bugSomething isn't workingSomething isn't working

Status: Open.

#11799 In leanprover/lean4;

· chenson2018 opened on Dec 25, 2025

unfortunate interaction of <code>isDefEq</code>, <code>simp</code> and proof irrelevance

bugSomething isn't workingSomething isn't working

Status: Open.

#11798 In leanprover/lean4;

· hargoniX opened on Dec 25, 2025

isDefEq: constant approximation should permute binder telescope

bugSomething isn't workingSomething isn't working

Status: Open.

#11796 In leanprover/lean4;

· sgraf812 opened on Dec 25, 2025

codegen: redundant specializations and ref-count instruction destroying tail recursion

bugSomething isn't workingSomething isn't working

code-generatorThis issue is with the code generatorThis issue is with the code generator

Status: Open.

#11795 In leanprover/lean4;

· sgraf812 opened on Dec 25, 2025

RFC: 2 List theorems: mem_eraseDupsBy_loop, mem_eraseDups

RFCRequest for commentsRequest for comments

Status: Open.

#11786 In leanprover/lean4;

· NicolasRouquette opened on Dec 24, 2025

RFC: <code>lake outdated</code> command to check for dependency updates

Status: Open.

#11783 In leanprover/lean4;

· jessealama opened on Dec 23, 2025

allow building lean4 with a system mimalloc shared library?

bugSomething isn't workingSomething isn't working

Status: Open.

#11777 In leanprover/lean4;

· juhp opened on Dec 23, 2025

Unknown constant in <code>mkCongrSimp</code>/<code>getFunInfo</code>

bugSomething isn't workingSomething isn't working

Status: Open.

#11766 In leanprover/lean4;

· sgraf812 opened on Dec 22, 2025

<code>exact? +grind</code> uses the declaration it's in recursively

bugSomething isn't workingSomething isn't working

Status: Open.

#11746 In leanprover/lean4;

· Rob23oba opened on Dec 20, 2025