return()

[corysimmons]

It'd be nice to explicitly return these anywhere -- especially where Grid Layout Spec is concerned.

grid-template-columns:
  return(sizes(ratio(1.618, 1) ratio(1.618, 2)) pluck(1))
  return(sizes(ratio(1.618, 1) ratio(1.618, 2)) pluck(2))
;

return() might be too vague and clash with preprocessors.

get() maybe?

grid-template-columns:
  get(sizes(ratio(1.618, 1) ratio(1.618, 2)) pluck(1))
  get(sizes(ratio(1.618, 1) ratio(1.618, 2)) pluck(2))
;