static <A> JPanel hvgrid_distribute(L<A> components, int gap) {
  if (empty(components)) ret jpanel();
  int cols = iceil(sqrt(l(components)));
  ret hvgrid(listToChunks(cols, components), gap);
}

static <A> JPanel hvgrid_distribute(L<A> components) {
  ret hvgrid_distribute(components, 0);
}