Controlled installation of Lean and mathlib on Debian/Ubuntu #
This document explains a more controlled installation procedure for Lean and mathlib on Linux distributions derived from Debian (Debian itself, Ubuntu, LMDE,...). There is a quicker way described in the main install page but it requires more trust. Of course you can get even more details about what is going on by reading the bash script that will be downloaded below: elan_init.
Lean itself doesn't depend on much infrastructure, but supporting tools needed by most users require
python. So the first step is:
sudo apt install git curl python3 python3-pip python3-venv
The next step installs a small tool called
elanwhich will handle updating Lean according to the needs of your current project (hit Enter when a question is asked). It will live in
$HOME/.elanand adds a line to
curl https://raw.githubusercontent.com/leanprover/elan/master/elan-init.sh -sSf | sh
There are two editors you can use with Lean, VS Code and emacs. The recommended choice is Visual Studio Code.
wget -O code.deb https://go.microsoft.com/fwlink/?LinkID=760868 sudo apt install ./code.deb rm code.deb code --install-extension jroesch.lean
Now open VS Code, and verify Lean is working, for example by saving a file
#eval 1+1. A green line should appear underneath
#eval 1+1, and hovering the mouse over it you should see
The alternative is to use Emacs, and its lean-mode.
Then we install a small tool called
leanprojectthat which will handle updating mathlib according to the needs of your current project. We use pipx to perform the installation.
python3 -m pip install --user pipx python3 -m pipx ensurepath source ~/.profile pipx install mathlibtools
Lean Projects #
You can now read instructions about creating and working on Lean projects