leanprover/vscode-lean4

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VS Code extension for the Lean 4 programming language and theorem prover

Stars: 313
Forks: 104
Open beginner issues: 0
Indexed issues: 52
Avg merge: 1h 56m
Merged PRs (30d): 1

Dominant language: TypeScript
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 20, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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52 open issues indexed

Completion popup reopens after Esc in Lean files; caused by default quickSuggestionsDelay of 200 Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

leanprover/vscode-lean4#800 · 1 comment · Opened Sep 17, 2026
The "Rename Symbol" code action fails to account for constructor/destructor tags Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 58/100

leanprover/vscode-lean4#799 · Opened Sep 15, 2026
install leanprover/lean4 again and again Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

leanprover/vscode-lean4#796 · 9 comments · Opened Aug 19, 2026
RFC: Split into multiple extensions; use extension pack to bundle Open

RFC

Difficulty 5/5 Over a week Newbie friendliness 35/100

leanprover/vscode-lean4#790 · 1 comment · 1 reaction · Opened Jun 23, 2026
Remove unmaintained "Even Better TOML" dependency Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

leanprover/vscode-lean4#787 · 5 comments · Opened Jun 18, 2026
Overzealous caching of tactic state Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

leanprover/vscode-lean4#785 · 1 comment · 2 reactions · Opened Jun 10, 2026
RFC: Have 'restart file' button show how many files would be rebuilt Open

RFC

Difficulty 5/5 Over a week Newbie friendliness 35/100

leanprover/vscode-lean4#771 · 4 reactions · Opened Apr 20, 2026
Unicode file paths displayed as URI-encoded in the infoview Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 62/100

leanprover/vscode-lean4#759 · Opened Apr 12, 2026
Display target before assumptions not always respected Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

leanprover/vscode-lean4#734 · 1 comment · 1 reaction · Opened Mar 9, 2026
RFC: Automatic file reloading when dependencies change Open

RFC

Difficulty 5/5 Over a week Newbie friendliness 35/100

leanprover/vscode-lean4#693 · 5 comments · 7 reactions · Opened Nov 26, 2025
Rename symbol dialog does not do unicode input translation Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

leanprover/vscode-lean4#690 · 1 comment · Opened Nov 9, 2025
RFC: collapsing hyps in infoview Open

RFC

Difficulty 4/5 3-5 days Newbie friendliness 38/100

leanprover/vscode-lean4#652 · Opened Aug 20, 2025
RFC: Command-clickable file links in the InfoView Open

RFC

Difficulty 5/5 Over a week Newbie friendliness 30/100

leanprover/vscode-lean4#631 · 2 reactions · Opened Jul 10, 2025
RFC: Presentation / Demo mode Open

RFC

Difficulty 5/5 Over a week Newbie friendliness 25/100

leanprover/vscode-lean4#627 · 6 comments · Opened Jun 13, 2025
RFC: Streamlined Entry of LaTeX Math Blocks in Markdown Open

RFC

Difficulty 5/5 Over a week Newbie friendliness 25/100

leanprover/vscode-lean4#626 · 1 comment · 1 reaction · Opened Jun 12, 2025
Please verify domain in the vscode marketplace Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

leanprover/vscode-lean4#617 · 6 comments · Opened May 29, 2025
pinned InfoView not updated Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

leanprover/vscode-lean4#616 · 1 comment · Opened Apr 29, 2025
Setup Guide should say something about running resulting executables Open

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

leanprover/vscode-lean4#598 · 1 comment · 1 reaction · Opened Apr 1, 2025
Working with lean/git installed in WSLv1 or WSLv2 instance Open

Difficulty 1/5 1-3 hours Newbie friendliness 45/100

leanprover/vscode-lean4#597 · 3 comments · 1 reaction · Opened Mar 28, 2025
Rendering of `\varphi` and `\phi` in Lean files Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

leanprover/vscode-lean4#584 · 2 comments · 1 reaction · Opened Mar 5, 2025
Opening some paths with curly brackets still fails Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

leanprover/vscode-lean4#570 · 1 comment · Opened Jan 13, 2025
RFC: Math in hovers Open

RFC

Difficulty 5/5 Over a week Newbie friendliness 30/100

leanprover/vscode-lean4#541 · 1 comment · 5 reactions · Opened Oct 21, 2024
InfoView not working Xubuntu 22.04 Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

leanprover/vscode-lean4#517 · 1 comment · Opened Aug 13, 2024
RFC: do not use `_serverProcess` in leanclient. Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

leanprover/vscode-lean4#487 · 1 comment · Opened Jun 26, 2024
Stale dependency diagnostic does not show up under 'Messages' after opening VS Code Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

leanprover/vscode-lean4#424 · Opened Mar 27, 2024
[Mouseover pop-up] show type above error Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

leanprover/vscode-lean4#401 · 1 comment · 1 reaction · Opened Mar 2, 2024
feature request: in VSCode, open downstream files with errors Open

RFC

Difficulty 4/5 3-5 days Newbie friendliness 35/100

leanprover/vscode-lean4#397 · Opened Feb 15, 2024
Feature request: Support Live Share Open

RFC

Difficulty 5/5 Over a week Newbie friendliness 35/100

leanprover/vscode-lean4#390 · 6 comments · 20 reactions · Opened Jan 24, 2024
Illegible colors in infoview on selection Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

leanprover/vscode-lean4#353 · Opened Nov 8, 2023
Extension doesn't play nice with msys2 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

leanprover/vscode-lean4#346 · Opened Oct 30, 2023
Suggest adding a `.vscode/settings.json` Open

RFC

Difficulty 3/5 1-2 days Newbie friendliness 35/100

leanprover/vscode-lean4#325 · 2 comments · Opened Sep 17, 2023
Merge vscode-lean4-code-actions? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

leanprover/vscode-lean4#316 · 1 comment · Opened Aug 24, 2023
Having both `\centerdot` (aka `\.`) and `\cdot` can be unnecessarily confusing. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

leanprover/vscode-lean4#308 · 2 comments · 2 reactions · Opened Jul 1, 2023
Feature Request : Update on Save Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

leanprover/vscode-lean4#305 · 2 comments · 1 reaction · Opened Jun 26, 2023
Preview Markdown images in docstrings Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

leanprover/vscode-lean4#296 · 1 reaction · Opened Apr 6, 2023
Goals in traces are not properly indented Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

leanprover/vscode-lean4#294 · Opened Mar 28, 2023
Fully expand traces Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

leanprover/vscode-lean4#293 · 1 reaction · Opened Mar 27, 2023
Infoview does not load (ARM64) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

leanprover/vscode-lean4#287 · 6 comments · Opened Feb 26, 2023
Bring back `library_note`s? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

leanprover/vscode-lean4#286 · Opened Feb 18, 2023
Fix `null`/`undefined` confusion in the RPC bindings Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

leanprover/vscode-lean4#283 · Opened Feb 1, 2023
Popups for huge expressions are shown outside of viewport Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

leanprover/vscode-lean4#281 · Opened Jan 20, 2023
"subexpression had been modified" not shown direcly after `rw` Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

leanprover/vscode-lean4#279 · Opened Jan 20, 2023
Intercept `applyEdit` and reveal the change position Open

Difficulty 3/5 1-2 days Newbie friendliness 43/100

leanprover/vscode-lean4#243 · 3 comments · Opened Aug 12, 2022
Move the abbreviations provider to a UI extension Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

leanprover/vscode-lean4#241 · 5 comments · Opened Aug 11, 2022
Lean Server is missing a way to trigger a move of the cursor to a specified position Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

leanprover/vscode-lean4#225 · 7 comments · Opened Jul 19, 2022
Error loading webview: Error: Could not register service workers: InvalidStateError Open

leanprover/vscode-lean4#206 · 2 comments · 1 assignee · Opened Jun 28, 2022
Tachyons? Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

leanprover/vscode-lean4#183 · 18 comments · Opened May 26, 2022
Better handling when LeanClient not 'running' Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

leanprover/vscode-lean4#143 · 1 reaction · Opened Feb 28, 2022
Better line wrapping of long snippets in the InfoView Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

leanprover/vscode-lean4#107 · 6 comments · 1 reaction · Opened Jan 21, 2022
Keyboard accessibility warnings from Tippy Open

leanprover/vscode-lean4#54 · 1 assignee · Opened Oct 18, 2021

leanprover/vscode-lean4

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