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Markus Himmel 03a5db34c7 feat: generalize String.Slice.Pos.cast (#12771) 
This PR generalizes `String.Slice.Pos.cast`, which turns an `s.Pos` into
a `t.Pos`, to no longer require `s = t`, but merely `s.copy = t.copy`.

This is a breaking change, but one that is easy to adapt to, by
replacing `proof` with `congrArg Slice.copy proof` where required.
2026-03-03 09:23:51 +00:00
.claude
doc: add guidance on waiting for CI/merges in release command (#12755)
2026-03-02 02:49:34 +00:00
.github
fix: use pull_request_target for label-triggered workflows (#12638)
2026-03-01 19:20:56 +11:00
doc
chore: switch to new test/bench suite (#12590)
2026-02-25 13:51:53 +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
releases_drafts
chore: remove stale release draft notes (#12518)
2026-02-17 19:56:23 +00:00
script
chore: fix profiler shebang and add profiling skill (#12519)
2026-03-01 07:09:33 +00:00
src
feat: generalize String.Slice.Pos.cast (#12771)
2026-03-03 09:23:51 +00:00
stage0
chore: update stage0
2026-03-02 22:42:13 +00:00
tests
feat: add deriving noncomputable instance syntax (#12756)
2026-03-03 06:42:41 +00:00
.gitattributes
doc: grove: update and add String data (#11551)
2025-12-08 16:49:37 +00:00
.gitignore
chore: fix ci for new test suite (#12704)
2026-02-27 23:25:37 +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: fail build on non-make generators (#12690)
2026-02-25 13:59:40 +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
doc: triage
2024-07-26 18:24:06 +02:00
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
chore: relative lean-toolchains (#12652)
2026-02-25 10:23:35 +00:00
lean.code-workspace
chore: relative lean-toolchains (#12652)
2026-02-25 10:23:35 +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: 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.

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leanlean4
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