You can clone with
No one assigned
There are buttons.styl in your screencast and at http://tjholowaychuk.com/post/4625229013/extend-sylus-with-a-nib but I can't find buttons.styl anywhere after installing nib.
Did you get rid of them?
If so, does anyone know of a button library for Stylus? If not, I'll study up on mixins and make one. Actually TJ, if you still have buttons.styl laying around somewhere, send it to me so I can browse it and learn, then I'll make some.
they were removed, this is more like compass now with css3 stuff, i dont think i have them anymore but you can find them in nib's history
you can look at http://roots.cx/axis/ if you want buttons... this looks resolved, so I'm closing it