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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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Joachim Breitner ebbbec00f7
refactor: dispatch try? builtins via @[builtin_try_tactic] (#13766) 
This PR moves the `evalSuggest` combinator and trace-handler dispatch
from a hardcoded `match` on syntax kinds to the existing
`tryTacticElabAttribute` registration mechanism, bringing `try?`'s
extensibility model in line with normal tactics and interactive `grind`.

Each built-in combinator (`<;>`, `first`, `paren`, `try`, `attempt_all`,
`attempt_all_par`, `first_par`, `seq1`) and trace handler (`grind?`,
`simp?`, `simp_all?`, `exact?`) is now registered as
`@[builtin_try_tactic <kind>]`. `evalSuggestImpl` becomes a thin
attribute-driven dispatcher mirroring `evalTactic`/`evalGrindTactic`.

The post-run "no unsolved goals in terminal mode" check is no longer
applied centrally by the dispatcher. Handlers that may leave goals
open (`simp?`, `simp_all?`, the atomic fallback) call the new
`checkTerminalGoals` helper themselves; handlers that close the goal
by construction (`grind?`, `exact?`) and combinators that delegate via
`evalSuggest` need no explicit call.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-18 19:41:24 +00:00
.claude doc: add CLAUDE.md guidance on rebasing vs changing PR base (#13652) 2026-05-09 11:34:50 +00:00
.github chore: CI: build everything with Lake (#13721) 2026-05-16 17:11:25 +00:00
.vscode chore: fixes from #13103 "enable separate codegen" (#13241) 2026-04-02 11:13:22 +00:00
doc chore: adjust dev-release preset (#13741) 2026-05-16 05:32:16 +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: update release tooling and docs (#13631) 2026-05-04 15:33:36 +00:00
src refactor: dispatch try? builtins via @[builtin_try_tactic] (#13766) 2026-05-18 19:41:24 +00:00
stage0 chore: update stage0 2026-05-15 09:14:30 +00:00
tests fix: instantiate metavariables when collecting a goal's constants (#13748) 2026-05-18 15:52:13 +00:00
.gitattributes chore: migrate more tests to new test suite (#12809) 2026-03-06 16:52:01 +00:00
.gitignore chore: update release tooling and docs (#13631) 2026-05-04 15:33:36 +00:00
.gitpod.Dockerfile chore: add gitpod configuration (#6382) 2024-12-15 21:38:13 +00:00
.gitpod.yml chore: strip binaries only in release builds (#13208) 2026-03-31 17:18:43 +00:00
.ignore chore: ignore stage0/ (for rg etc.) 2022-03-18 15:28:20 +01:00
AGENTS.md chore: add AGENTS.md symlink to CLAUDE.md (#13461) 2026-04-18 06:48:05 +00:00
CMakeLists.txt chore: use the lean-llvm LLVM for benchmarking (#13634) 2026-05-05 14:26:08 +00:00
CMakePresets.json chore: adjust dev-release preset (#13741) 2026-05-16 05:32:16 +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 chore: remove LICENSE header that confused GitHub 2021-11-18 09:42:35 +01:00
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.

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Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.