Has anyone had experience using grid stylesheets in a Meteor project?

Grid stylesheets appear to be a big improvement to other options for positioning elements. This approach is used by Apple in OS X and iOS. I like flexbox but GSS is expressive and appears to be able to do things flexbox can’t.

I tried directly including GSS in my Meteor project but couldn’t get it to work. Perhaps this is because of the way Meteor handles CSS files?

Then I discovered neonaleon:gss in Atmosphere. I added that to my project but it doesn’t seem able to process the MIME type text/gss.

Has anyone had success with GSS in a meteor by any method?