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Pull requests list

feat: XID support in Lean identifiers toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12726 opened Feb 27, 2026 by hargoniX • Draft
5
feat: extract simple array literals as static initializers changelog-compiler Compiler, runtime, and FFI 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
#12724 opened Feb 27, 2026 by hargoniX Loading…
6
fix: improve C++ compatibility for older compilers
#12722 opened Feb 27, 2026 by joehendrix • Draft
chore: deprecate levelZero and levelOne toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12720 opened Feb 27, 2026 by kim-em Loading…
2
fix: mark levelZero, levelOne, and Level.ofNat as implicit_reducible backport releases/v4.29.0 changelog-language Language features and metaprograms toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12719 opened Feb 27, 2026 by kim-em Loading…
4
feat: generalize below and brecOn on subsingletons 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
#12718 opened Feb 26, 2026 by arthur-adjedj • Draft
4 tasks
2
chore: fix ci for new test suite 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
#12704 opened Feb 26, 2026 by Garmelon Loading…
2
feat: standalone List.extract lemmas, don't normalize extract into drop/take changelog-library Library
#12703 opened Feb 26, 2026 by datokrat • Draft
fix: set implicitReducible on grandparent subobject projections backport releases/v4.29.0 breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan changelog-language Language features and metaprograms toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12701 opened Feb 26, 2026 by kim-em Loading…
5
fix: validate stage0 version matches release version changelog-other toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12700 opened Feb 26, 2026 by kim-em Loading…
1
5
feat: add Meta.synthInstance.apply trace class toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12699 opened Feb 26, 2026 by kim-em • Draft
2
feat: add structured TraceResult to TraceData toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12698 opened Feb 26, 2026 by kim-em • Draft
4
feat: add pp.fvars.anonymous option changelog-pp Pretty printing toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12688 opened Feb 25, 2026 by kim-em Loading…
2
feat: add cslib package template toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12679 opened Feb 24, 2026 by Shreyas4991 • Draft
1
2
perf: simplify cbv ite/dite simprocs by reducing Decidable instance directly changelog-tactics User facing tactics toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12677 opened Feb 24, 2026 by wkrozowski Loading…
4
feat: leading whitespace on first token 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
#12662 opened Feb 23, 2026 by mhuisi Loading…
6
feat: add ground evaluation for And/Or in Sym.Simp changelog-tactics User facing tactics toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12660 opened Feb 23, 2026 by wkrozowski Loading…
4
fix: detect native c++ stdlib instead of hard-coding for darwin toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12659 opened Feb 23, 2026 by jacobly0 • Draft
1
2
perf: persist grind preprocessing caches across calls changelog-tactics User facing tactics toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12657 opened Feb 23, 2026 by sgraf812 • Draft
2 tasks done
4
chore: turn on new do elaborator in Core toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN unlock-upstream-stdlib-flags
#12656 opened Feb 23, 2026 by sgraf812 Loading…
28
fix: use pull_request_target for label-triggered workflows builds-mathlib CI has verified that Mathlib builds against this PR changelog-other 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
#12638 opened Feb 22, 2026 by kim-em Loading…
6
experiment: fix various eta issues 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
#12636 opened Feb 21, 2026 by arthur-adjedj • Draft
1
19
feat: lake: download artifacts on demand 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-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
#12634 opened Feb 21, 2026 by tydeu • Draft
4
feat: add .claude/settings.json to lake init templates changelog-lake Lake toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12632 opened Feb 21, 2026 by kim-em Loading…
2
experiment: type improvements toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN
#12631 opened Feb 20, 2026 by hargoniX • Draft
4
ProTip! no:milestone will show everything without a milestone.