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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 23bd9dfb09
fix: make rewrite/rw tactic abort on elaboration errors (#6891) 
This PR modifies `rewrite`/`rw` to abort rewriting if the elaborated
lemma has any immediate elaboration errors (detected by presence of
synthetic sorries). Rewriting still proceeds if there are elaboration
issues arising from pending synthetic metavariables, like instance
synthesis failures. The purpose of the change is to avoid obscure
"tactic 'rewrite' failed, equality or iff proof expected ?m.5" errors
when for example a lemma does not exist.

This helps error reporting for the natural number game.
https://leanprover.zulipchat.com/#narrow/channel/113489-new-members/topic/Why.20doesn't.20add_left_comm.20work.20here.3F/near/497060022
2025-02-04 14:40:11 +00:00
.github chore: CI: bump dawidd6/action-download-artifact from 7 to 8 (#6903) 2025-02-04 10:41:44 +00:00
doc chore: release_checklist.py checks for bump/v4.X.0 branches (#6933) 2025-02-03 23:46:26 +00:00
images
nix fix: Windows stage0 linking (#6622) 2025-01-14 09:09:50 +01:00
releases doc: add highlights section to v4.16.0 release notes (#6925) 2025-02-03 23:18:08 +00:00
releases_drafts chore: cherry-pick release notes from releases/v4.15.0 and releases/v4.16.0 (#6520) 2025-01-04 01:25:33 +00:00
script chore: add commit hash to error message in script/release_notes.py (#6944) 2025-02-04 06:10:08 +00:00
src fix: make rewrite/rw tactic abort on elaboration errors (#6891) 2025-02-04 14:40:11 +00:00
stage0 chore: update stage0 2025-02-03 12:12:03 +00:00
tests fix: make rewrite/rw tactic abort on elaboration errors (#6891) 2025-02-04 14:40:11 +00:00
.gitattributes chore: Do not hide stage0/src/stdlib_flags.h from diffs 2023-09-13 19:29:25 +02:00
.gitignore feat: support Lake for building Lean core oleans (#3886) 2024-06-13 16:18:24 +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 fix: Windows stage0 linking (#6622) 2025-01-14 09:09:50 +01:00
CMakePresets.json fix: prevent Task.get deadlocks from threadpool starvation (#6758) 2025-01-23 23:01:39 +00:00
CODEOWNERS chore: adjust CODEOWNERS (#6327) 2024-12-10 08:37:20 +00:00
CONTRIBUTING.md doc: triage 2024-07-26 18:24:06 +02:00
flake.lock feat: ship cadical (#4325) 2024-08-23 09:13:27 +00:00
flake.nix fix: Windows stage0 linking (#6622) 2025-01-14 09:09:50 +01:00
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
LICENSES feat: ship cadical (#4325) 2024-08-23 09:13:27 +00:00
README.md chore: update documentation title and link README to reference (#6409) 2024-12-17 22:18:56 +00:00
RELEASES.md chore: split RELEASES.md into releases/ folder (#6918) 2025-02-03 11:04:09 +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 (documentation source: doc/make/index.md).