After installing lem, you can start developing in Common Lisp at once.

You can skip over writing tidy settings or installing many plugins as you do on Emacs.

• roswell
• ncurses

• Linux
• MacOS 10.13+
• Windows

You can try Lem by running it in a docker container:

docker run --rm -ti -v `pwd`:/app 40ants/lem:latest

Please install roswell at first.

Roswell Installation Guide

After that, please follow the steps bellow.

1. install lem by roswell
$ ros install lem-project/lem

2. add the PATH in the initialization file(such as ~/.bashrc)
export PATH=$PATH:~/.roswell/bin

$ ros update lem

$ lem <filename.lisp>

You can watch the screencast on Youtube.

Screencast

Lem loads ~/.lem/init.lisp when starting up.

You can see an example here or here

fukamachi also published his init files on GitHub. https://github.com/fukamachi/.lem

• Pareto - A mode, complement to the Paredit. Makes Lisp code editing even more efficient!

Electron version is in the experimental stage.

If you try, please follow below steps.

$ node -v  # check if your nodejs is 8.9.3LTS+.
v8.9.3
$ npm -v
5.5.1
$ npm install -g cxxxr/lem   # install lem-electron
$ lem-electron               # Electron version will start

If installation fails due to bordeaux-threads, there is no thread provided by SBCL on your PC.
You need to use Clozure Common Lisp (CCL) instead of SBCL.

$ ros install ccl-bin
$ ros use ccl-bin
$ ros install cxxxr/lem

And also need to specify frontend to ncurses-ccl. You can launch lem as follows:

$ lem --frontend ncurses-ccl

See https://github.com/cxxxr/lem/wiki/Lisp-Mode

See https://github.com/cxxxr/lem/wiki/How-to-hack-on-lem-itself

If you have a questions, join this Gitter chat.

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MIT