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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 5adce9fa20 fix: use eta reduction at DiscrTree 
@kha @dselsam

Suppose we are trying to retrieve the global instances for
`(Monad (StateM Nat))`.
During retrieval, we reducde `StateM Nat` into `fun x => StateT Nat Id x`
However, the `DiscrTree` contains an entry for `Monad (StateT * *)`.
Thus, we fail to retrieve any instance.
I fixed the particular issue by using eta reduction.
Not sure we will encounter other definitional-equality related problems .
2019-12-03 10:30:53 -08:00
.github chore: switch to Github Actions 2019-11-21 13:11:16 -08:00
bin chore: update .gitignores 2019-11-29 11:18:26 +01:00
doc doc: update build docs 2019-11-29 11:23:42 +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 chore: remove cygwin support 2019-11-12 08:28:58 -08:00
nix chore: add CCACHE option, on by default if available 2019-11-21 13:11:02 -08:00
script chore: switch to Github Actions 2019-11-21 13:11:16 -08:00
src fix: use eta reduction at DiscrTree 2019-12-03 10:30:53 -08:00
stage0 feat: remove ignoreImplict workaround 2019-11-27 06:54:55 -08:00
tests fix: use eta reduction at DiscrTree 2019-12-03 10:30:53 -08:00
tmp/new-frontend chore(library/init/lean): disable new frontend for now 2019-06-05 15:26:43 -07:00
.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.