Add the following URL to your Eclipse 4.12 (2019-06) installation, via:

Help > Install New Software… > Work with:

https://download.jboss.org/jbosstools/photon/stable/updates/

Then select the individual features that you want to install:

Listed below are artifacts related to this release.

Update Site zips (Archived p2 Repos) are for offline installation. You do not need to unpack these zips to use them. Install into Eclipse via:

Help > Install New Software… > Add… > Archive…

Then select the downloaded zip, and the feature(s) you'd like to install.

Name	Size	Links
Update site (including sources) bundle of all JBoss Core Tools	841MB	zip (sha256)
Sources zip of all JBoss Core Tools	201MB	zip (sha256)
Release Notes		html