MacOS

Lem 2.1 was released! It provides binaries for Linux, MacOS and Windows.

Copy the app file to the applications folder and type the following in your terminal:

xattr -d com.apple.quarantine /Applications/lem.app

Please install roswell at first, Roswell Installation Guide.

After that, please follow the steps bellow.

1. Install lem by roswell

$ ros follow-dependency=t install lem-project/lem

2. Add the PATH in the initialization file (such as ~/.bashrc)

export PATH=$PATH:~/.roswell/bin

Clone the Lem repository and build a Docker image:

$ docker build -t lem .

You can now run it:

$ docker run --rm -it -v .:/shared lem

• sbcl
• ncurses
• qlot
• git

• Using HomeBrew https://brew.sh/

brew install sbcl ncurses

• Automatic installer

curl -L https://qlot.tech/installer | bash

For an alternative installation, https://github.com/fukamachi/qlot#installation

• Create the directories

mkdir $HOME/common-lisp && cd $HOME/common-lisp

git clone https://github.com/lem-project/lem.git
cd lem && make ncurses

or run make sdl2-ncurses to build Lem with the two interfaces in it. Then choose the interface at startup with -i / --interface, either “sdl2” or “ncurses”.

• Copying the PATH to ~/.bashrc

export PATH="$HOME/common-lisp/lem:$PATH"