After this installation procedure, it is crucial to read how to start or get a Lean project. And of course you'll probably want to learn Lean!

In the search box that appears, type lean4 , and then select the lean4 extension that appears, and click the install button.

Install VS Code. Launch VS Code and install the Lean 4 extension by clicking on the 'Extensions' sidebar entry and searching for 'Lean 4'.

Download Lean 4. Stable releases of Lean 4 are published approximately once per month, after a series of release candidates for community testing.

To update the CLI to the latest version, run pip install --upgrade lean . The CLI automatically performs a version check once a day and warns you in case you ...

Launch VScode and install the Lean extension: click on the extension icon in the view bar at the left and search for lean .

You will need to install Lean 3, and the Lean community tools. Instructions on how to get these things installed on your computer are here (right click and ...

Installation. The CLI can be installed and updated by running pip install --upgrade lean . Note that many commands in the CLI require Docker to run. See Get ...

The Lean CLI is distributed as a Python package, so it requires pip to be installed. Because pip is distributed as a part of Python, you must install Python ...

elan is a small tool for managing your installations of the Lean theorem prover. It places lean and lake binaries in your PATH that automatically select and, ... Issues 22 · Elan-init.sh · License