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Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
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Kyle Miller 7e9ea00ac0
feat: add option pp.piBinderNames (#10374) 
This PR adds the options `pp.piBinderNames` and
`pp.piBinderNames.hygienic`. Enabling `pp.piBinderNames` causes
non-dependent pi binder names to be pretty printed, rather than be
omitted. When `pp.piBinderNames.hygienic` is false (the default) then
only non-hygienic such biner names are pretty printed. Setting `pp.all`
enables `pp.piBinderNames` if it is not otherwise explicitly set.

Implementation note: this is exposing the secret pretty printer option
`pp.piBinderNames` that was being used within the signature pretty
printer.

Closes #1134.
2025-09-14 05:15:04 +00:00
.github chore: CI: ensure cache reuse in update-stage0 (#10359) 2025-09-12 14:56:32 +00:00
doc doc: testing Lean while avoiding rebuilds for downstream projects (#10328) 2025-09-10 13:53:34 +00:00
images
releases_drafts chore: updates to release_checklist.md (#7817) 2025-04-04 03:45:36 +00:00
script chore: review of failing grind tests (#10166) 2025-08-28 05:24:31 +00:00
src feat: add option pp.piBinderNames (#10374) 2025-09-14 05:15:04 +00:00
stage0 chore: update stage0 2025-09-12 13:30:23 +00:00
tests feat: add option pp.piBinderNames (#10374) 2025-09-14 05:15:04 +00:00
.gitattributes fix: mark doc parser tests as eol=lf (#10344) 2025-09-11 11:19:01 +00:00
.gitignore feat: further release automation (#9092) 2025-06-30 05:44:10 +00:00
.gitpod.Dockerfile chore: add gitpod configuration (#6382) 2024-12-15 21:38:13 +00:00
.gitpod.yml chore: add gitpod configuration (#6382) 2024-12-15 21:38:13 +00:00
.ignore
CMakeLists.txt chore: make USE_LAKE the default (#10016) 2025-08-21 11:43:25 +00:00
CMakePresets.json chore: fix reldebug preset (#8051) 2025-04-23 10:05:11 +00:00
CODEOWNERS chore: make datokrat code owner for iterators, ranges and slices (#9667) 2025-08-01 17:34:43 +00:00
CONTRIBUTING.md doc: triage 2024-07-26 18:24:06 +02:00
flake.lock chore: robustify Nix shell (#8141) 2025-04-28 15:08:32 +00:00
flake.nix chore: remove broken Nix build (#9910) 2025-08-14 08:31:39 +00:00
lean-toolchain
lean.code-workspace chore: add the lean4 extension to the vscode workspace (#3059) 2023-12-14 08:58:21 +00:00
LICENSE
LICENSES feat: ship cadical (#4325) 2024-08-23 09:13:27 +00:00
README.md doc: fix examples link 2025-08-22 16:28:01 +02:00
RELEASES.md chore: updates to release_checklist.md (#7817) 2025-04-04 03:45:36 +00:00

README.md

This is the repository for Lean 4.

About

Installation

See Setting Up Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.