Extension:ExtensionDistributor

The ExtensionDistributor extension generates .tar.gz snapshots of extensions in the git repository and distributes them.

It is intended for use on www.mediawiki.org.

See Special:ExtensionDistributor to see how it works.

Installation
You'll need to set up some configuration for the extension to work.

For Wikimedia's Gerrit instance, it would look like:

The Gerrit provider requires an independent tarball generator, the source code for the one running at extdist.wmflabs.org can be found [https://github.com/wikimedia/labs-tools-extdist here].