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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 f87d05ad4e
feat: Hoare logic for monadic programs and verification condition generation (#8995) 
This PR introduces a Hoare logic for monadic programs in
`Std.Do.Triple`, and assorted tactics:

*  `mspec` for applying Hoare triple specifications
* `mvcgen` to turn a Hoare triple proof obligation `⦃P⦄ prog ⦃Q⦄` into
pure verification conditoins (i.e., without any traces of Hoare triples
or weakest preconditions reminiscent of `prog`). The resulting
verification conditions in the stateful logic of `Std.Do.SPred` can be
discharged manually with the tactics coming with its custom proof mode
or with automation such as `simp` and `grind`.

This is pre-release of a planned feature and not yet intended for
production use. We are grateful for feedback of early adopters, though.

Co-authored-by: Sebastian Graf <sg@lean-fro.org>
2025-06-26 15:49:56 +00:00
.github chore: ci: fixes to Grove workflow (#9014) 2025-06-26 12:15:51 +00:00
doc chore: Grove: high-level sections (#9011) 2025-06-26 13:06:56 +00:00
images chore(CMakeLists.txt): move Lean logo to make sure we can test leanemacs without installing Lean 2015-01-31 17:38:49 -08:00
nix chore: fix Nix build 2025-04-21 18:40:11 +02:00
releases_drafts chore: updates to release_checklist.md (#7817) 2025-04-04 03:45:36 +00:00
script feat: move lean-pr-testing-NNNN branches to a fork (#8933) 2025-06-24 03:30:43 +00:00
src feat: Hoare logic for monadic programs and verification condition generation (#8995) 2025-06-26 15:49:56 +00:00
stage0 chore: update stage0 2025-06-26 09:48:45 +00:00
tests feat: introduce slices (#8947) 2025-06-26 15:29:03 +00:00
.gitattributes chore: Do not hide stage0/src/stdlib_flags.h from diffs 2023-09-13 19:29:25 +02:00
.gitignore chore: allow module in tests (#8881) 2025-06-21 02:49:22 +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 chore: ignore stage0/ (for rg etc.) 2022-03-18 15:28:20 +01:00
CMakeLists.txt fix: cadical distribution on Linux (#8201) 2025-05-02 18:25:16 +00:00
CMakePresets.json chore: fix reldebug preset (#8051) 2025-04-23 10:05:11 +00:00
CODEOWNERS chore: add @zwarich to the compiler CODEOWNERS (#8305) 2025-05-12 18:42:54 +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: robustify Nix shell (#8141) 2025-04-28 15:08:32 +00:00
lean-toolchain doc: VS Code dev setup (#2961) 2023-11-30 08:35:03 +00:00
lean.code-workspace chore: add the lean4 extension to the vscode workspace (#3059) 2023-12-14 08:58:21 +00:00
LICENSE chore: remove LICENSE header that confused GitHub 2021-11-18 09:42:35 +01:00
LICENSES feat: ship cadical (#4325) 2024-08-23 09:13:27 +00:00
README.md chore: remove old documentation site (#7974) 2025-05-14 14:31:33 +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 Setting Up Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.