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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 75ec8e42c8
test: simplify assumptions in mvcgen' with grind benchmark (#13186) 
This PR adds `simplifying_assumptions [Nat.add_assoc]` to the
`vcgen_get_throw_set_grind` benchmark, recovering hypothesis
simplification lost in a54eafb ("refactor: decouple solve from grind").
That refactor introduced `PreTac.processHypotheses` which wraps
`simpNewHyps`, but the call sites in `work` and `main` call
`Grind.processHypotheses` directly, leaving `simpNewHyps` as dead code.
Without it, long `s + 1 + … + 1` chains are never collapsed, causing an
asymptotic slowdown visible by a factor of 2 at n=150 (largest radar
input size).

Benchmark results (VCGen time in ms):

| n | Before | After | Speedup |
|---|--------|-------|---------|
| 50 | 222 | 186 | 1.2× |
| 100 | 391 | 251 | 1.6× |
| 150 | 647 | 329 | 2.0× |
| 200 | 995 | 415 | 2.4× |
| 300 | 1894 | 589 | 3.2× |

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-30 10:03:43 +00:00
.claude chore: speed up test suite slightly (#12969) 2026-03-20 12:24:32 +00:00
.github fix: rebootstrap cache in github CI (#13143) 2026-03-26 20:50:03 +00:00
.vscode chore: replace workspace file with .vscode/ settings (#12770) 2026-03-04 01:10:04 +00:00
doc feat: unfold and rewrap instances in inferInstanceAs and deriving 2026-03-22 13:25:46 +01:00
images
releases_drafts chore: remove stale release draft notes (#12518) 2026-02-17 19:56:23 +00:00
script chore: remove lean4checker from release repos (#13121) 2026-03-26 12:15:37 +00:00
src style: correct typos in comments and documentation (#13181) 2026-03-30 07:00:18 +00:00
stage0 chore: update stage0 2026-03-29 01:00:22 +00:00
tests test: simplify assumptions in mvcgen' with grind benchmark (#13186) 2026-03-30 10:03:43 +00:00
.gitattributes chore: migrate more tests to new test suite (#12809) 2026-03-06 16:52:01 +00:00
.gitignore chore: replace workspace file with .vscode/ settings (#12770) 2026-03-04 01:10:04 +00:00
.gitpod.Dockerfile
.gitpod.yml
.ignore
CMakeLists.txt chore: make leantar available in stage0 (#12992) 2026-03-19 20:43:43 +00:00
CMakePresets.json chore: fix ci for new test suite (#12704) 2026-02-27 23:25:37 +00:00
CODEOWNERS chore: make @hargoniX code owner of the compiler (#10732) 2025-10-10 04:43:38 +00:00
CONTRIBUTING.md chore: migrate pkg tests (#12889) 2026-03-11 18:55:46 +00:00
flake.lock chore: update to c++20 (#12117) 2026-02-11 01:17:40 +00:00
flake.nix chore: add aarch64-darwin to flake (#12915) 2026-03-18 15:55:34 +00:00
lean-toolchain chore: relative lean-toolchains (#12652) 2026-02-25 10:23:35 +00:00
LICENSE
LICENSES feat: bundle leantar with Lean (#12822) 2026-03-09 20:10:59 +00:00
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.