lean4-htt

Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.

Find a file

Leonardo de Moura 68629b2e5f feat(library/init/category/transformers): disable instance has_monad_lift_t ==> has_coe It produces non-termination because it triggers sub-problems of the form (has_monad_lift_t t ?M), and this kind of sub-problem is bad for the transitive closure rule: instance has_monad_lift_t_trans (m n o) [has_monad_lift n o] [has_monad_lift_t m n] : has_monad_lift_t m o The trick above only behaves well for synthesis subproblems that do not contain sub-variables. Note that the sub-problem (has_monad_lift_t t ?M) is created by a similar rule used at has_coe_t. instance {a : Type u₁} {b : Type u₂} {c : Type u₃} [has_coe a b] [has_coe_t b c] : has_coe_t a c AND instance {m n} [has_monad_lift_t m n] {α} : has_coe (m α) (n α) := We workaround the issue by disabling instance {m n} [has_monad_lift_t m n] {α} : has_coe (m α) (n α) and adding instances of it. Example: meta instance (α : Type) : has_coe (tactic α) (solver α) := ... meta instance (α : Type) : has_coe (tactic α) (prover α) := ... meta instance (α : Type) : has_coe (tactic α) (smt_tactic α) := ...		2017-01-01 09:15:25 -08:00
bin	refactor(gitignore): remove old ignore entries	2016-12-10 08:42:39 -08:00
doc	chore(doc/make/cygwin): we do not support cygwin anymore (only MSYS2)	2016-12-23 10:01:08 -08:00
extras	feat(kernel/declaration,*): all theorems are delayed, and are revealed on delta-reduction	2016-11-29 11:12:43 -08:00
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
library	feat(library/init/category/transformers): disable instance has_monad_lift_t ==> has_coe	2017-01-01 09:15:25 -08:00
old_library	refactor(gitignore): remove old ignore entries	2016-12-10 08:42:39 -08:00
script	refactor(emacs/load-lean): install emacs dependencies directly from (M)ELPA	2016-12-02 16:50:50 -08:00
src	feat(library/type_context,frontends/lean/elaborator): add class_exception (for max depth reached), ignore them during coercion resolution (just add a trace message)	2017-01-01 08:51:09 -08:00
tests	feat(library/init/meta): smt_tactic skeleton	2016-12-31 18:22:23 -08:00
tmp	refactor(library/debugger): move debugger to tools	2016-12-17 10:50:13 -08:00
.appveyor.yml	feat(.appveyor.yml): windows ci using appveyor	2016-12-02 17:01:58 -08:00
.codecov.yml	feat(.travis.yml): add codecov	2016-12-02 17:01:58 -08:00
.gitignore	chore(.gitignore): ignore VSCode config file	2016-12-18 12:35:25 -08:00
.travis.yml	chore(.travis.yml): use "(A)bort" option instead of "(C)ontinue" for assertion violations	2016-12-21 21:52:58 -08:00
LICENSE	Add LICENSE file	2013-07-15 18:55:48 -07:00
README.md	chore(README): remove link to short tutorial	2016-12-23 09:49:52 -08:00