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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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Cameron Zwarich 6a8d7cc17c
chore: remove instWPMonad instance and test that relies upon it (#10293) 
The proof of the instWPMonad instance relies on the equality of any two
terms of type `IO.RealWorld`, which is only a side effect of the current
transparent definition. Ignoring the questions around the utility of
proving things about programs in `IO`, the semantic validity of this
instance in the intended model of the IO monad is also unclear.

I tried a few things to axiomatize this instance so it could be put into
the test file to preserve the one test section that relies on it, but I
was unsuccessful; everything I attempted caused errors.
2025-09-07 23:42:52 +00:00
.github chore: CI: reintroduce lost CTEST_OPTIONS (#10211) 2025-09-02 09:26:29 +00:00
doc doc: fix broken "quickstart" and "supported editors" link (#8785) 2025-09-02 12:45:04 +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 chore: remove instWPMonad instance and test that relies upon it (#10293) 2025-09-07 23:42:52 +00:00
stage0 chore: update stage0 2025-09-07 18:40:52 +00:00
tests chore: remove instWPMonad instance and test that relies upon it (#10293) 2025-09-07 23:42:52 +00:00
.gitattributes chore: Do not hide stage0/src/stdlib_flags.h from diffs 2023-09-13 19:29:25 +02:00
.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 chore: ignore stage0/ (for rg etc.) 2022-03-18 15:28:20 +01:00
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 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 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.