Hi everyone!

I want to upstream my SXML UI component library to Guix, since it has
reached stable status. I think lots of projects can benefit from it. I
have tested this package definition extensively so I don't expect it
to be missing anything, but I'd really appreciate your review. I am
attaching a patch to add it to Guix,

Thanks in advance,
Cheers in freedom

Josep Bigorra (Joe)