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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 812c47d463 feat: simplify CoeFun and CoeSort 
The main issue is nontermination for problems that do not have
solution. When using dependent coercions, we keep creating goals of
the form `CoeSort ... (coe (coe (coe ...))) ...`. Same for `CoeFun`.
I am considering simplifying it even further, and making sure
`CoeDep` can be used at most once in a sequence of coercions `CoeTC`.

Another option is to use a very small amount of fuel to
guarantee termination when solving coercion TC problems.

cc @Kha @dselsam
2020-01-29 21:56:26 -08:00
.github chore: CI: check for memory leaks in tests & stdlib 2019-12-23 14:25:17 +01:00
bin fix: lean-gdb.py 2019-12-17 12:16:34 -08:00
doc fix: dead link in doc 2020-01-02 14:36:14 +01:00
images
lean4-mode chore: improve · input method 2019-12-21 15:55:14 -08:00
nix chore: fix nix-build by disabling ccache for now 2020-01-25 15:26:59 +01:00
script chore: extended CI checks 2019-12-07 21:51:59 +01:00
src feat: simplify CoeFun and CoeSort 2020-01-29 21:56:26 -08:00
stage0 chore: update stage0 2020-01-28 19:08:09 -08:00
tests feat: simplify CoeFun and CoeSort 2020-01-29 21:56:26 -08:00
tmp refactor: cleanup 2019-12-06 14:41:39 -08:00
.clang-format feat(library/vm/process): add basic process support 2017-03-28 18:08:06 -07:00
.codecov.yml fix(.codecov.yml): do not fail github ci if coverage drops by 0.01% 2017-06-25 10:35:02 +02:00
.gitattributes chore(.gitattributes): use union merge strategy for doc/changes.md 2017-12-11 12:49:10 +01:00
.gitignore chore: update .gitignores 2019-11-29 11:18:26 +01:00
default.nix chore: add CCACHE option, on by default if available 2019-11-21 13:11:02 -08:00
LICENSE
README.md chore(README): update 2019-04-24 11:40:46 -07:00
shell.nix chore: switch to Github Actions 2019-11-21 13:11:16 -08:00

README.md

We are currently developing Lean 4. Lean 3 is still the latest official release. This repository contains work in progress.

Important. Unless you are one of our collaborators

  • We strongly suggest you use Lean 3.
  • Pull requests are not welcome.
  • New issues are not welcome, and will be closed without any feedback.