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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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Sebastian Graf bb8d8da1af
test: add benchmark vcgen_reader_state (#12671) 
This PR adds the benchmark vcgen_reader_state that is a variant of
vcgen_add_sub_cancel that takes the value to subtract from a `ReaderT`
layer. Measurements:
```
goal_100: 201 ms, 1 VCs by sorry: 0 ms, kernel: 52 ms
goal_500: 382 ms, 1 VCs by sorry: 0 ms, kernel: 327 ms
goal_1000: 674 ms, 1 VCs by sorry: 1 ms, kernel: 741 ms
```
Which suggests it scales linearly. The generated VC triggers superlinear
behavior in `grind`, though, hence it is discharged by `sorry`.
2026-02-24 13:19:15 +00:00
.claude chore: CLAUDE.md: restrict build parallelism (#12624) 2026-02-22 14:35:05 +00:00
.github feat: lazy initialization of closed terms (#12044) 2026-02-20 08:45:15 +00:00
doc chore: improve release command PR status checking (#12536) 2026-02-17 21:21:30 +00:00
images
releases_drafts chore: remove stale release draft notes (#12518) 2026-02-17 19:56:23 +00:00
script fix: update bump branch toolchain to nightly for all repos (#12586) 2026-02-19 13:04:26 +00:00
src chore: API to prepare for String.split API (#12668) 2026-02-24 10:03:00 +00:00
stage0 chore: update stage0 2026-02-24 00:40:29 +00:00
tests test: add benchmark vcgen_reader_state (#12671) 2026-02-24 13:19:15 +00:00
.gitattributes doc: grove: update and add String data (#11551) 2025-12-08 16:49:37 +00:00
.gitignore chore: enable leanprover/skills plugin for Claude Code (#12609) 2026-02-20 12:35:32 +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: fix repeated cmake calls breaking the build (#12598) 2026-02-19 16:23:47 +00:00
CMakePresets.json chore: CI: enable leak sanitizer again (#11339) 2025-11-27 18:32:35 +00:00
CODEOWNERS chore: make @hargoniX code owner of the compiler (#10732) 2025-10-10 04:43:38 +00:00
CONTRIBUTING.md
flake.lock chore: update to c++20 (#12117) 2026-02-11 01:17:40 +00:00
flake.nix chore: update to c++20 (#12117) 2026-02-11 01:17:40 +00:00
lean-toolchain
lean.code-workspace chore: lean.code-workspace: fix terminal cwd (#10802) 2025-10-16 20:19:12 +00:00
LICENSE
LICENSES
README.md doc: update URLs that are currently pointing to redirects (#10397) 2025-09-17 15:50:07 +00:00
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 Install Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.