To install eGit, use the following update site:
Eclipse 4.3 (Kepler) - http://download.eclipse.org/releases/kepler
Eclipse 4.2 (Juno) - http://download.eclipse.org/releases/juno
Preferably, the latest version of Groovy Eclipse should be installed, which can be obtained from the update site for the latest snapshot:
. Now, restart.
See getting a developer build for more information on where to get the development snapshots.
Import Groovy-Eclipse source code into your workspace (the simple way)
The canonical Groovy-Eclipse repository is located at github. The easiest way to import the source code into your workspace is to use the following Groovy-Eclipse team project set groovy-eclipse-e42-project-set.psf for Eclipse Juno, or groovy-eclipse-e43-project-set.psf for Eclipse Kepler. To use, go to File -> Import... -> Team project set and paste the URL. Importing the team project set will take a long time since the entire repository needs to be cloned. Currently, the psf file requires Eclipse 4.2.x.
Import Groovy-Eclipse source code into your workspace (the complicated way)