Thanks @andering I tried and worked great.
Though I thought that Sublime_merge was integrated in Bublime...Instead it is a complete independent program. However really nice.
Thanks for the layer.
To install it I was not able to add it with:
layman -o https://gitlab.com/andering/overlay/blob/master/andering.xml -f -a andering
I got a nasty error regarding the layman DB. I created manually the follow file:
<repo priority="50" quality="experimental" status="unofficial">
layman -a andering