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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 bb1a373420
fix: subst notation (heq ▸ h) should fail if it does't subst (#3994) 
The subst notation substitues in the expected type, if present, or in
the type of the argument, if no expected type is known.

If there is an expected type it already fails if it cannot find the
equations' left hand side or right hand side. But if the expected type
is not known and the equation's lhs is not present in the second
argument's type, it will happily do a no-op-substitution.

This is inconsistent and unlikely what the user intended to do, so we
now print an error message now.

This still only looks for the lhs; search for the rhs as well seems
prudent, but I’ll leave that for a separate PR, to better diagnose the
impact on mathlib.

This triggers a small number of pointless uses of subst in mathlib, see
https://github.com/leanprover-community/mathlib4/pull/12451
2024-04-28 20:29:04 +00:00
.github chore: CI: pin macos-13 (#3992) 2024-04-27 20:58:22 +00:00
doc chore: ci to set “changes-stage0” label (#3979) 2024-04-24 07:08:34 +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
nix chore: test results as job summary (#3715) 2024-03-27 10:14:33 +00:00
script feat: script to summarize issues (#3952) 2024-04-24 06:11:07 +00:00
src fix: subst notation (heq ▸ h) should fail if it does't subst (#3994) 2024-04-28 20:29:04 +00:00
stage0 chore: update stage0 2024-04-19 14:31:23 +00:00
tests fix: subst notation (heq ▸ h) should fail if it does't subst (#3994) 2024-04-28 20:29:04 +00:00
.gitattributes chore: Do not hide stage0/src/stdlib_flags.h from diffs 2023-09-13 19:29:25 +02:00
.gitignore chore: update tests to account for .lake 2023-11-13 20:31:24 -05:00
.ignore chore: ignore stage0/ (for rg etc.) 2022-03-18 15:28:20 +01:00
CMakeLists.txt chore: update-stage0-commit cmake target (#3692) 2024-04-04 13:35:53 +00:00
CODEOWNERS chore: update code owners 2024-04-24 10:16:16 +02:00
CONTRIBUTING.md doc: Adjust contributor's docs to squash merging (#2927) 2023-11-21 10:13:43 +00:00
flake.lock chore: test results as job summary (#3715) 2024-03-27 10:14:33 +00:00
flake.nix chore: replace shell.nix with a devShell in flake.nix (#3717) 2024-03-21 13:24:01 +00:00
lean-toolchain doc: VS Code dev setup (#2961) 2023-11-30 08:35:03 +00:00
lean.code-workspace chore: add the lean4 extension to the vscode workspace (#3059) 2023-12-14 08:58:21 +00:00
LICENSE chore: remove LICENSE header that confused GitHub 2021-11-18 09:42:35 +01:00
LICENSES chore: add GMP license for now 2021-11-18 09:42:35 +01:00
README.md doc: remove nightly and other outdated references (#3027) 2024-01-25 13:53:36 +00:00
RELEASES.md feat: make Level -> MessageData coercion respect pp.mvars (#3980) 2024-04-24 14:23:42 +00:00

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