Colorbar for contour plot with uneven spacing of contour lines

[rkube]

Hi,
I’m trying to add a colorbar for a contour plot with uneven spacing between the contour lines. The contour plot

using CairoMakie

fig = let 
    fig = Figure()
    ax = Axis(fig[1, 1])

    xrg = 0.0:0.01:1.0
    yrg = -1.0:0.1:1.0

    z(x, y) = x.^2 .+ y.^2

    zvals = zeros(length(xrg), length(yrg))
    for (ix_x, x) ∈ enumerate(xrg)
        for (ix_y, y) ∈ enumerate(yrg)
            zvals[ix_x, ix_y] = z(x,y)
        end
    end

    cf = contour!(ax, xrg, yrg, zvals, levels=cat(0.1:0.05:0.3, 0.4:0.1:1.0, dims=1), labels=true, colormap=:hsv)
    #Colorbar(fig[1, 2], cf)
    fig
end

When I naively try to add a colorbar I get the error

ERROR: Multiple colormaps found for plot MakieCore.Text{Tuple{Vector{Point{2, Float32}}}}, please specify which one to use manually. Please overload `Makie.extract_colormap(::MakieCore.Text{Tuple{Vector{Point{2, Float32}}}})` to allow for the automatical creation of a Colorbar.

I also tried wrapping into a categorical colormap and get the same error.

Makie version: [13f3f980] CairoMakie v0.12.0
Platform: x84_64 (linux)

[ffreyer]

Closing this as a special case of #4036