If you have an existing Eclipse installation and simply wish to install Acceleo in it, you can install it from one of the Update Sites, available here https://download.eclipse.org/acceleo/updates/releases/4.0/.

When installing the update site you must ensure that "Contact all update sites during install to find required software" is checked and that in the "Manage…​" dialog, the "Latest Eclipse Release" update site is checked.

Install Acceleo

For a minimal installation you can select the following features and plugins:

Minimal features and plugins to install

For those of you who need to retrieve the source code of Acceleo, it is available on Github: https://github.com/eclipse-acceleo/acceleo/.