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### Describe the bug
A build of the Lean4 flake (https://github.com/leanprover/lean4/pull/838/commits/0df78cf801e2e6950c78e57825244e1d0b289a8e) fails with:
```
> ld: warning: directory not foun…
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```lean
/-- 部分集合 -/
def Set (α : Type) := α → Prop
/-- 1つの要素だけからなる集合 -/
def Set.singleton (a : α) : Set α := fun x => x = a
/-- 集合に1つ要素を追加する -/
def Set.insert (a : α) (s : Set α) := fun x =>…
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Lean4 capitalization conventions have changed. For example, types are now capitalized, so `set α` would normally be written as `Set α`. These mismatches make using the auto-ported Mathlib libraries in…
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In #51, @akirak made some suggestions that were deemed out of the scope of that PR. Go over these suggestions and decide whether to implement them.
urkud updated
4 months ago
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```
#check with
```
When typing this line, we get ident completion up to typing the `h`. Ideally we should get it even then.
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* http://outlace.com/Lean_part_1.html
* https://typista.org/lean-for-scala-programmers/
* https://icerm.brown.edu/video_archive/?play=2906
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https://leanprover-community.github.io/mathlib_docs/tactic/delta_instance.html#tactic.delta_instance_handler
In lean3 there was a default derive handler which would run `delta` on the goal. That is, …
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In contrast to the install script, tarballs can be sourced directly from Hydra: https://github.com/leanprover/lean4/blob/e8b58abffcf2eadc436435cf6e6733827d818ed6/.github/workflows/nix-ci.yml#L34-L44
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I'm not sure if I've done something wrong or if the installation instructions could be made a little more explicit.
Currently, my environment is:
1. NixOS 22.05 (just upgraded today), in general u…
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### Description
Use the following MWE and trigger Go to Definition at ``:
```
#eval 1
```
This yields an error:
```
[Error - 11:37:43 AM] Request textDocument/definition failed.
Messag…