static[T] constructor problem.nim

type
  Foo[T] = ref object
    x: T

  Bar[N: static[int], T] = ref object
    a: array[N, T]
    x: T

  Foobar[N: static[int], T] = object
    b: Bar[N, T]

proc foobar[N, T](x: var Foobar[N, T]) =
  x.b = Bar[N, T](x: 42)        # !!!

when isMainModule:
  var f = Foo[int](x: 42)       # works
  var b = Bar[10, int](x: 42)   # works

  var fb: Foobar[10, int]       # works
  fb.b = Bar[10, int](x: 42)

  fb.foobar                     # Error: object constructor needs an object type

This works:

var fb: Foobar[10, int]
new fb.b
fb.b.x = 42