Here is an ebuild for kde-base/ktron-9999:live, recently added to KDE trunk.
Created attachment 183633 [details] ebuild
Created attachment 185131 [details, diff] Commit that adds ktron to overlay
Created attachment 185132 [details, diff] Commit that adds ktron to @kdegames-live
Created attachment 185164 [details, diff] Commit that adds ktron to overlay This fixes the manifest from the previous version... oops
in overlay, thanks