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Pull requests list

fix: try eta-expansion before delta-reduction in the kernel
#14927 opened Aug 25, 2026 by Kha Member • Draft
1
4
fix: build casesOn for propositions from projections changelog-language Language features and metaprograms toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14925 opened Aug 25, 2026 by nomeata Collaborator Loading…
4
refactor: persist code quality entries in an environment extension changelog-no Do not include this PR in the release changelog toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14914 opened Aug 24, 2026 by wkrozowski Contributor Loading…
4
feat: allow disabling termination warnings when using addPreDefinitions builds-manual CI has verified that the Lean Language Reference builds against this PR builds-mathlib CI has verified that Mathlib builds against this PR changelog-language Language features and metaprograms mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14912 opened Aug 24, 2026 by Rob23oba Contributor Loading…
2
feat: create asNode/mkNode abstraction for DiscrTree changelog-no Do not include this PR in the release changelog toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14911 opened Aug 24, 2026 by robsimmons Contributor Loading…
5
test: complete no-concurrency Lean model of refcounting
#14910 opened Aug 24, 2026 by Kha Member Loading…
perf: count only user-mode instructions in benchmarks builds-manual CI has verified that the Lean Language Reference builds against this PR builds-mathlib CI has verified that Mathlib builds against this PR mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14908 opened Aug 24, 2026 by Kha Member • Draft
4
feat: lake: separate leanir job changelog-lake Lake
#14906 opened Aug 24, 2026 by tydeu Member • Draft
fix: make theorems opaque to the kernel as well builds-manual CI has verified that the Lean Language Reference builds against this PR builds-mathlib CI has verified that Mathlib builds against this PR changelog-language Language features and metaprograms mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14896 opened Aug 23, 2026 by nomeata Collaborator • Draft
7
feat: drop the universe bump from PSigma, PProd and PULift changes-stage0 Contains stage0 changes, merge manually using rebase toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14893 opened Aug 22, 2026 by nomeata Collaborator • Draft
7
feat: define well-founded recursion without large elimination of Acc breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan changelog-library Library mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14892 opened Aug 22, 2026 by nomeata Collaborator • Draft
2
test: how costly is eta-for-unit ? breaks-manual This is not necessarily a blocker for merging, but there needs to be a plan. breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14891 opened Aug 22, 2026 by arthur-adjedj Contributor • Draft
18
fix(Data/Dyadic): swap names of Dyadic.not_lt and Dyadic.not_le P-medium We may work on this issue if we find the time toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14890 opened Aug 22, 2026 by plp127 Contributor Loading…
2
feat: add lake check as a comparator frontend breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan changelog-lake Lake mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14885 opened Aug 21, 2026 by Kha Member • Draft
2
feat: add a leanchecker-paranoid binary with mimalloc mitigations changelog-other release-ci Enable all CI checks for a PR, like is done for releases toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14884 opened Aug 21, 2026 by Kha Member Loading…
2
feat: introduce findMatchingDecl? for code quality checks wrapped in Lean.Linter (DRAFT) toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14880 opened Aug 21, 2026 by wkrozowski Contributor • Draft
2
chore: update to mimalloc 3.5.0 builds-manual CI has verified that the Lean Language Reference builds against this PR builds-mathlib CI has verified that Mathlib builds against this PR mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14866 opened Aug 20, 2026 by Kha Member • Draft
4
feat: lake: read recorded code quality metrics in lake lint changelog-lake Lake toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14862 opened Aug 20, 2026 by wkrozowski Contributor Loading…
2
fix: adjust name mangling in kernel's nested inductive type processing changelog-language Language features and metaprograms toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14846 opened Aug 19, 2026 by kmill Collaborator • Draft
1
2
refactor: new LRAT checker
#14842 opened Aug 19, 2026 by hargoniX Member • Draft
20
feat: add hint to transitive deprecated usage warning changelog-no Do not include this PR in the release changelog toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14841 opened Aug 19, 2026 by wkrozowski Contributor • Draft
2
fix: reuse the instances of a non-exposed definition in inferInstanceAs builds-mathlib CI has verified that Mathlib builds against this PR changelog-language Language features and metaprograms mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14840 opened Aug 19, 2026 by gasparattila Loading…
1
3
feat: lake: make job cancellation a first-class JobState flag builds-mathlib CI has verified that Mathlib builds against this PR changelog-lake Lake mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN P-medium We may work on this issue if we find the time toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14835 opened Aug 19, 2026 by dennj Contributor Loading…
3
refactor: derive vcgen's exception postcondition rules from a type class changelog-tactics User facing tactics toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14827 opened Aug 18, 2026 by sgraf812 Contributor • Draft
4
fix: better structural recursion equations breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan builds-manual CI has verified that the Lean Language Reference builds against this PR mathlib4-nightly-available A branch for this PR exists at leanprover-community/mathlib4-nightly-testing:lean-pr-testing-NNNN toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#14822 opened Aug 18, 2026 by Rob23oba Contributor • Draft
6
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