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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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Leonardo de Moura f1ed13efff feat: improve elabMatchAux 
We now (try to) postpone `match ... with` elaboration when pattern
variables and patterns still contain metavariables before invoking `mkMatcher`.

This improvement makes sure we can elaborate an example submitted by
Daniel Selsam.

Remark: this update may create performance problems since we
backtrack `elabMatchTypeAndDiscrs` and `elabMatchAltView`.
We hope this is not a problem in practice since we use the "quick-check"
`waitExpectedTypeAndDiscrs`. Recall that we could compile Lean
without this commit. So, it suggests cases where we need to postpone
after `elabMatchAltView` are rare.
2021-01-18 15:33:48 -08:00
.github chore: CI: don't schedule nightlies on forks 2021-01-14 15:04:45 +01:00
doc chore: script to copy .produced.out ~> .expected.out 2021-01-15 16:27:59 +01:00
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
lean4-mode feat: lean4-mode: allow setting lean4-rootdir after initialization 2021-01-13 16:39:00 +01:00
nix fix: Nix: I still forget how to handle argument quoting in bash 2021-01-13 16:39:00 +01:00
script chore: nightly releases 2021-01-04 13:46:20 +01:00
src feat: improve elabMatchAux 2021-01-18 15:33:48 -08:00
stage0 chore: update stage0 2021-01-15 13:33:25 -08:00
tests feat: improve elabMatchAux 2021-01-18 15:33:48 -08:00
tmp chore: remove tactic framework dependency 2020-11-10 14:32:58 -08:00
.gitattributes chore: restore marking stage0/ as binary files, which we lost at some point 2020-08-14 11:12:13 +02:00
.gitignore chore: ignore result files from nix build 2020-11-24 19:16:27 +01:00
CMakeLists.txt chore: use standard release build for stage 0 2020-10-12 10:34:48 +02:00
CONTRIBUTING.md doc: contribution guidelines & README update 2021-01-12 14:38:36 -08:00
default.nix doc: setup 2021-01-03 13:21:58 +01:00
flake.lock chore: update mdBook to mitigate CVE-2020-26297 2021-01-04 22:11:42 +01:00
flake.nix feat: Nix: integrate vscode-lean4 2021-01-03 19:58:46 +01:00
LICENSE
README.md doc: contribution guidelines & README update 2021-01-12 14:38:36 -08:00
shell.nix fix: CI: Linux release job 2020-11-24 19:16:27 +01:00

README.md

This is the repository for Lean 4, which is currently being released as milestone releases towards a first stable release. Lean 3 is still the latest stable release.

About

Installation

See Setting Up Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.