This setup process typically takes 1-2 hours. If you have any problems, please reach out to our TA for help.
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Install Visual Studio Code and the Lean 4 extension. The instruction can be found here
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Install the following repository on your computer
https://github.com/sorrachai/FAA2025/
This can be done by following the same installation step as suggested by Bhavik's Lean course You can replace his repository with https://github.com/sorrachai/FAA2025/
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Once you complete step 2, you can navigate to Lecture/Sheet1.lean to check if InfoView is working correctly. During this time, it may compile Mathlib locally (~30 mins on most machines). This happens only once. After that, you can use it normally.
Alternatively, follow the more detailed installation guide written by Haocheng. Please use https://github.com/sorrachai/FAA2025/ repository instead of the mathematics-in-lean repository.
Lean is not backward compatible. Therefore, please use the same lean version (leanprover/lean4:v4.22.0-rc3 in lean-toolchain) throughout the course.
Create a working copy to avoid conflicts with repository updates:
# Inside the FAA2025 folder
cp -r Lectures my_exercises
# Now work in my_exercises/ instead of Lectures/
This allows you to:
- Keep original files intact for reference
- Update the repository without losing your work:
git pull && lake exe cache get - Submit homework from your personal folder
You can code Lean using https://live.lean-lang.org/ (simply copying Sheet1.lean), and you can start coding right away.