Different anchors for `x` and `y` labels.

[patrick-kidger]

I have the following:

#import "@preview/cetz:0.4.2"
#import "@preview/cetz-plot:0.1.3"
#cetz.canvas({
  cetz.draw.set-style(axes: (label: (offset: 0.2, anchor: "north")))
  cetz-plot.plot.plot(
    size: (2, 2),
    axis-style: "school-book",
    x-label: [Foo],
    y-label: [Bar],
    x-tick-step: none,
    y-tick-step: none,
    cetz-plot.plot.add(((0, 0), (1, 1)))
  )
})

however this only produces a reasonable-looking label for the x label. The y label overlaps with the y-axis, and for this label I would like to be able to set anchor: "south".

I've already consulted the manual and couldn't find any documented way to adjust both labels independently. (I've also tried various suggestively-named arguments, e.g. axes: (y-label: (anchor: "south")), but these don't seem to have any effect and are presumably just silently ignored.)

Is this possible?

(And whilst I'm here: setting anchor: "south" mostly gets me what I want for the y label, but a little extra vertical space is still needed to get it far enough away. I can hack around this by adding #v(0.3em) to the y-label, but it also struck me that there might be a better way to do this.)