patrik-cihal/lean-graph

---

patrik-cihal/lean-graph.json

{
  "createdAt": "2023-12-08T15:13:51Z",
  "defaultBranch": "main",
  "description": "Theorem relational dependencies automatic extraction and visualization as a graph for Lean4.",
  "fullName": "patrik-cihal/lean-graph",
  "homepage": "",
  "language": "Rust",
  "name": "lean-graph",
  "pushedAt": "2025-09-19T12:10:48Z",
  "stargazersCount": 37,
  "topics": [],
  "updatedAt": "2025-11-14T21:51:46Z",
  "url": "https://github.com/patrik-cihal/lean-graph"
}

Lean Graph

Interactive visualization of dependencies for any theorem/definitions in your Lean project.

![Fermat last theorem four]!(fermat-last-theorem-4-example.png)

How to use

(NO LONGER SUPPORTED) Run in your browser: lean-graph.com

Run locally

1. Get Rustup
2. Install Lean Graph by executing this command in your terminal: cargo install --git "https://github.com/patrik-cihal/lean-graph"
3. Run Lean Graph from the terminmal under the name lean-graph

Extracting graph from .lean files

1. Copy the DependencyExtractor.lean into your project folder (either from GitHub, or download it in the web app)
2. In the top of the file import the files where are the theorems/definitions you want to extract the graph for
3. In the bottom of the file there is an #eval line where you can specify your own custom theorem/definition name
4. Uncomment that same line to get the .json file

What’s next

Additional features

• After clicking on node, allow for seeing the documentation
• Lazy loading of depending nodes
• Option to visualize any Mathlib constant, without the need of running script locally

If you want to see these features, any contribution is welcome.