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lean4-htt/doc/make/wsl.md

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Lean in Windows WSL

As an alternative to the MSYS2 setup you can also use the Windows Subsystem for Linux to build Lean there, but edit and debug using Visual Studio Code in Windows.

For the most part setup in WSL is the same as Ubuntu. This document provides additional information on how to setup Windows Visual Studio Code remote debugging into your WSL environment using the lean extension running in WSL.

It is recommended that you setup Ubuntu in WSL 2. Then follow the Dev setup using elan.

Visual Studio Code setup on Windows

Install Visual Studio Code on Windows. Install the VS Code Remote Development extension from Microsoft. This extension includes the Remote - WSL extension. Install the lean4 extension but into the WSL using: Install in WSL: Ubuntu

Type Ctrl+Shift+P and select Remote-WSL: Open Folder in WSL... to open a folder containing your hello world lean package.

When everything is working you should see this:

screenshot

with a functioning infoview, syntax coloring and tooltips.

Troubleshooting

Connection to server is erroring. Shutting down server.

If your leanpkg has a build folder try deleting it. Lean .olean binaries are not cross platform so if the binaries were copied from a different platform they need to be deleted so that the new build is created for your platform.

Logs are showing up with a windows file path

Check that you have not set a windows path in your lean4.serverLogging.path Visual Studio Code setting. it is best if this setting is set as follows:

  "lean4.serverLogging.path": "logs"

This will result in a logs folder being created inside your lean package folder in the WSL file system.