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Initial setup


OS Specific Prerequisites


None. Skip to Build.


Download Cygwin.

You may need to change /etc/fstab (path in Cygwin) to fix a directory permission error when building. Change this line:

none /cygdrive cygdrive binary,posix=0,user 0 0

Add ,noacl to the line:

none /cygdrive cygdrive binary,posix=0,user,noacl 0 0

Close and re-open Cygwin Terminal.

The issue:


To run electron on Linux you need to have installed.

Ref: Linux (Arch) build depends on

Note that, on Debian-based distros, you may need to install an additional package as there is a pre-existing node package and the standard Node.js package on these distros installs a Node.js executable named nodejs instead of node as our build script expects. See issue #1931 for some background.


To build LightTable from scratch on OSX, Windows Cygwin or Linux:

$ git clone
$ cd LightTable
# Creates a directory in builds/
$ script/

This will take a few minutes the first time as electron and plugins are downloaded. Subsequent invocations are faster. To override the output directory, specify $VERSION e.g. VERSION=0.8.1-pre script/

On subsequent builds, use script/ for quicker builds that don't require updating plugins or electron. If any ClojureScript files change, you must run lein cljsbuild once app. On Windows, you may need to comment out the :source-map line before compiling ClojureScript to get around issue 1025.


Once you've built LightTable, run it in one of the following ways:

  • OSX
    • As a commandline executable: builds/lighttable-0.8.1-mac/light
    • As an application: open -a $PWD/builds/lighttable-0.8.1-mac/
  • Linux
    • As a commandline executable: builds/lighttable-0.8.1-linux/light
    • As an application: builds/lighttable-0.8.1-linux/LightTable
  • Windows
    • As an application: builds/lighttable-0.8.1-windows/LightTable.exe

You can also run LightTable with script/ This script allows you to skip running script/ While it's useful as a dev convenience, final changes should be QAed with a fresh build from script/